./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/protection/mix022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:23:47,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:23:47,147 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:23:47,152 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:23:47,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:23:47,191 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:23:47,196 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:23:47,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:23:47,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:23:47,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:23:47,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:23:47,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:23:47,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:23:47,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:23:47,233 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:23:47,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:23:47,233 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:23:47,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:23:47,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:23:47,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:23:47,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:23:47,235 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:23:47,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:23:47,236 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:23:47,236 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:23:47,236 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:23:47,236 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:23:47,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:23:47,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:23:47,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:23:47,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:23:47,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:23:47,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:23:47,239 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:23:47,239 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:23:47,239 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:23:47,239 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:23:47,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:23:47,240 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:23:47,240 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:23:47,240 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:23:47,241 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:23:47,241 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:23:47,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:23:47,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:23:47,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:23:47,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:23:47,486 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:23:47,487 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:23:47,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix022_tso.yml/witness.yml [2024-06-27 18:23:47,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:23:47,660 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:23:47,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 18:23:48,698 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:23:48,898 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:23:48,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 18:23:48,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb52f0394/b85928ff7c7a48aca279f11aacd5ea65/FLAGc246ecc64 [2024-06-27 18:23:48,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb52f0394/b85928ff7c7a48aca279f11aacd5ea65 [2024-06-27 18:23:48,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:23:48,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:23:48,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:23:48,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:23:48,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:23:48,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:23:47" (1/2) ... [2024-06-27 18:23:48,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3826b669 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:23:48, skipping insertion in model container [2024-06-27 18:23:48,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:23:47" (1/2) ... [2024-06-27 18:23:48,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16b1265f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:23:48, skipping insertion in model container [2024-06-27 18:23:48,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:23:48" (2/2) ... [2024-06-27 18:23:48,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3826b669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:48, skipping insertion in model container [2024-06-27 18:23:48,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:23:48" (2/2) ... [2024-06-27 18:23:48,934 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:23:48,983 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:23:48,984 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:23:48,984 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) [2024-06-27 18:23:48,984 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:23:48,985 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 18:23:49,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:23:49,232 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/mix022_tso.i[944,957] [2024-06-27 18:23:49,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:23:49,405 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:23:49,436 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/mix022_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:23:49,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:23:49,516 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:23:49,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49 WrapperNode [2024-06-27 18:23:49,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:23:49,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:23:49,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:23:49,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:23:49,524 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,575 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-27 18:23:49,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:23:49,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:23:49,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:23:49,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:23:49,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,628 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 18:23:49,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:23:49,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:23:49,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:23:49,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:23:49,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (1/1) ... [2024-06-27 18:23:49,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:23:49,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:23:49,682 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 18:23:49,749 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 18:23:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:23:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:23:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:23:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:23:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:23:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:23:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:23:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:23:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:23:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:23:49,769 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 18:23:49,903 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:23:49,905 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:23:50,213 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:23:50,213 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:23:50,392 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:23:50,392 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:23:50,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:23:50 BoogieIcfgContainer [2024-06-27 18:23:50,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:23:50,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:23:50,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:23:50,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:23:50,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:23:47" (1/4) ... [2024-06-27 18:23:50,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf2659b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:23:50, skipping insertion in model container [2024-06-27 18:23:50,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:23:48" (2/4) ... [2024-06-27 18:23:50,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf2659b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:23:50, skipping insertion in model container [2024-06-27 18:23:50,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:23:49" (3/4) ... [2024-06-27 18:23:50,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf2659b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:23:50, skipping insertion in model container [2024-06-27 18:23:50,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:23:50" (4/4) ... [2024-06-27 18:23:50,409 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-27 18:23:50,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:23:50,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:23:50,426 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:23:50,465 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:23:50,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:23:50,529 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 18:23:50,529 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:23:50,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 18:23:50,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:23:50,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-27 18:23:50,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:23:50,558 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;@7dc18a19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:23:50,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:23:50,561 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:23:50,561 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:23:50,562 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:23:50,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:50,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:23:50,563 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 18:23:50,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 346938358, now seen corresponding path program 1 times [2024-06-27 18:23:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715234484] [2024-06-27 18:23:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:51,366 INFO 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 18:23:51,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:51,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715234484] [2024-06-27 18:23:51,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715234484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:51,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:51,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:23:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422616280] [2024-06-27 18:23:51,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:51,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:23:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:23:51,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:23:51,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 18:23:51,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:51,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:51,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 18:23:51,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:51,702 INFO L124 PetriNetUnfolderBase]: 543/952 cut-off events. [2024-06-27 18:23:51,702 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:23:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 952 events. 543/952 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4754 event pairs, 234 based on Foata normal form. 43/933 useless extension candidates. Maximal degree in co-relation 1861. Up to 892 conditions per place. [2024-06-27 18:23:51,714 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:23:51,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 171 flow [2024-06-27 18:23:51,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:23:51,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:23:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-27 18:23:51,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-27 18:23:51,728 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-06-27 18:23:51,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 171 flow [2024-06-27 18:23:51,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:51,735 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-27 18:23:51,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-27 18:23:51,740 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 18:23:51,740 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-27 18:23:51,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:51,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:51,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:51,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:23:51,742 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 18:23:51,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:51,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1599562897, now seen corresponding path program 1 times [2024-06-27 18:23:51,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:51,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48745504] [2024-06-27 18:23:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:51,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:52,172 INFO 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 18:23:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48745504] [2024-06-27 18:23:52,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48745504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:52,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:23:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291316925] [2024-06-27 18:23:52,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:52,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:23:52,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:23:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:23:52,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:23:52,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:52,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:52,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:23:52,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:52,432 INFO L124 PetriNetUnfolderBase]: 621/1034 cut-off events. [2024-06-27 18:23:52,432 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:23:52,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1034 events. 621/1034 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4958 event pairs, 212 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2299. Up to 997 conditions per place. [2024-06-27 18:23:52,438 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-27 18:23:52,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 246 flow [2024-06-27 18:23:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:23:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:23:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-27 18:23:52,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-27 18:23:52,440 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-27 18:23:52,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 246 flow [2024-06-27 18:23:52,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:23:52,442 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-27 18:23:52,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:23:52,443 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-27 18:23:52,443 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-27 18:23:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:52,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:52,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:23:52,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:52,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1953158983, now seen corresponding path program 1 times [2024-06-27 18:23:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184630820] [2024-06-27 18:23:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:52,789 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 18:23:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184630820] [2024-06-27 18:23:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184630820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:52,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:23:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292286001] [2024-06-27 18:23:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:52,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:23:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:23:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:23:52,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:23:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:52,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:23:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:53,116 INFO L124 PetriNetUnfolderBase]: 613/1163 cut-off events. [2024-06-27 18:23:53,116 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-06-27 18:23:53,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1163 events. 613/1163 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 197 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 2618. Up to 968 conditions per place. [2024-06-27 18:23:53,121 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 49 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-27 18:23:53,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 358 flow [2024-06-27 18:23:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:23:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:23:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 18:23:53,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 18:23:53,125 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 5 states and 108 transitions. [2024-06-27 18:23:53,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 358 flow [2024-06-27 18:23:53,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 332 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:53,128 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 229 flow [2024-06-27 18:23:53,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-06-27 18:23:53,129 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-27 18:23:53,130 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 229 flow [2024-06-27 18:23:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:53,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:53,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:53,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:23:53,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:53,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:53,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1949687049, now seen corresponding path program 1 times [2024-06-27 18:23:53,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:53,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875272666] [2024-06-27 18:23:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:53,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:53,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875272666] [2024-06-27 18:23:53,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875272666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:23:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708791156] [2024-06-27 18:23:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:53,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:23:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:23:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:23:53,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 36 [2024-06-27 18:23:53,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:53,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:53,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 36 [2024-06-27 18:23:53,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:53,340 INFO L124 PetriNetUnfolderBase]: 236/604 cut-off events. [2024-06-27 18:23:53,340 INFO L125 PetriNetUnfolderBase]: For 268/294 co-relation queries the response was YES. [2024-06-27 18:23:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 604 events. 236/604 cut-off events. For 268/294 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3681 event pairs, 110 based on Foata normal form. 10/575 useless extension candidates. Maximal degree in co-relation 1265. Up to 381 conditions per place. [2024-06-27 18:23:53,344 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 26 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 18:23:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 270 flow [2024-06-27 18:23:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:23:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:23:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 18:23:53,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2024-06-27 18:23:53,346 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 229 flow. Second operand 3 states and 77 transitions. [2024-06-27 18:23:53,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 270 flow [2024-06-27 18:23:53,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:23:53,349 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 196 flow [2024-06-27 18:23:53,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-27 18:23:53,350 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-27 18:23:53,350 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 196 flow [2024-06-27 18:23:53,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:53,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:53,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:53,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:23:53,351 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 18:23:53,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:53,351 INFO L85 PathProgramCache]: Analyzing trace with hash 200585610, now seen corresponding path program 1 times [2024-06-27 18:23:53,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:53,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113005314] [2024-06-27 18:23:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:54,098 INFO 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 18:23:54,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:54,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113005314] [2024-06-27 18:23:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113005314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:54,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:54,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:54,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139392818] [2024-06-27 18:23:54,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:54,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:54,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:54,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:54,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:23:54,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:54,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:54,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:23:54,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:54,434 INFO L124 PetriNetUnfolderBase]: 531/1011 cut-off events. [2024-06-27 18:23:54,434 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-27 18:23:54,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1011 events. 531/1011 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5174 event pairs, 180 based on Foata normal form. 4/972 useless extension candidates. Maximal degree in co-relation 2431. Up to 808 conditions per place. [2024-06-27 18:23:54,440 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 12 changer transitions 1/69 dead transitions. [2024-06-27 18:23:54,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 376 flow [2024-06-27 18:23:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-27 18:23:54,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 18:23:54,442 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 196 flow. Second operand 6 states and 119 transitions. [2024-06-27 18:23:54,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 376 flow [2024-06-27 18:23:54,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:54,445 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 217 flow [2024-06-27 18:23:54,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:23:54,446 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-27 18:23:54,447 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 217 flow [2024-06-27 18:23:54,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:54,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:54,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:23:54,448 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 18:23:54,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:54,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1043195360, now seen corresponding path program 1 times [2024-06-27 18:23:54,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779269137] [2024-06-27 18:23:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:54,845 INFO 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 18:23:54,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779269137] [2024-06-27 18:23:54,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779269137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:54,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:23:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645758259] [2024-06-27 18:23:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:23:54,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:54,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:23:54,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:23:54,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 18:23:54,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:54,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:54,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 18:23:54,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:55,112 INFO L124 PetriNetUnfolderBase]: 452/894 cut-off events. [2024-06-27 18:23:55,113 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2024-06-27 18:23:55,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 894 events. 452/894 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4626 event pairs, 185 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 2242. Up to 738 conditions per place. [2024-06-27 18:23:55,118 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 48 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-27 18:23:55,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 386 flow [2024-06-27 18:23:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:23:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:23:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-27 18:23:55,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 18:23:55,120 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 217 flow. Second operand 5 states and 86 transitions. [2024-06-27 18:23:55,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 386 flow [2024-06-27 18:23:55,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 353 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:55,123 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 246 flow [2024-06-27 18:23:55,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-27 18:23:55,124 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-27 18:23:55,124 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 246 flow [2024-06-27 18:23:55,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:55,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:55,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:55,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:23:55,125 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 18:23:55,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2020681263, now seen corresponding path program 1 times [2024-06-27 18:23:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:55,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491917965] [2024-06-27 18:23:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:55,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:56,019 INFO 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 18:23:56,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:56,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491917965] [2024-06-27 18:23:56,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491917965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:56,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:56,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725784733] [2024-06-27 18:23:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:56,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 18:23:56,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:56,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:56,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 18:23:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:56,370 INFO L124 PetriNetUnfolderBase]: 458/908 cut-off events. [2024-06-27 18:23:56,370 INFO L125 PetriNetUnfolderBase]: For 942/942 co-relation queries the response was YES. [2024-06-27 18:23:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 908 events. 458/908 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4744 event pairs, 177 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 2380. Up to 724 conditions per place. [2024-06-27 18:23:56,376 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 54 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 18:23:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 434 flow [2024-06-27 18:23:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 18:23:56,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:23:56,378 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 246 flow. Second operand 6 states and 104 transitions. [2024-06-27 18:23:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 434 flow [2024-06-27 18:23:56,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:56,381 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 283 flow [2024-06-27 18:23:56,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:23:56,381 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-27 18:23:56,382 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 283 flow [2024-06-27 18:23:56,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:56,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:56,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:56,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:23:56,382 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 18:23:56,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:56,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1475534119, now seen corresponding path program 1 times [2024-06-27 18:23:56,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:56,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664770291] [2024-06-27 18:23:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:56,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:56,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:56,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664770291] [2024-06-27 18:23:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664770291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928983466] [2024-06-27 18:23:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:56,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:56,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:56,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:23:56,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:56,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:56,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:23:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:57,220 INFO L124 PetriNetUnfolderBase]: 556/1065 cut-off events. [2024-06-27 18:23:57,220 INFO L125 PetriNetUnfolderBase]: For 1484/1484 co-relation queries the response was YES. [2024-06-27 18:23:57,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 1065 events. 556/1065 cut-off events. For 1484/1484 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5529 event pairs, 220 based on Foata normal form. 1/1018 useless extension candidates. Maximal degree in co-relation 2990. Up to 890 conditions per place. [2024-06-27 18:23:57,227 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 60 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-27 18:23:57,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 498 flow [2024-06-27 18:23:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 18:23:57,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:23:57,229 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 283 flow. Second operand 6 states and 99 transitions. [2024-06-27 18:23:57,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 498 flow [2024-06-27 18:23:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 474 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:57,235 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 325 flow [2024-06-27 18:23:57,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-27 18:23:57,238 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-06-27 18:23:57,238 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 325 flow [2024-06-27 18:23:57,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:57,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:57,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:57,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:23:57,239 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 18:23:57,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1783382335, now seen corresponding path program 2 times [2024-06-27 18:23:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788291504] [2024-06-27 18:23:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:57,722 INFO 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 18:23:57,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788291504] [2024-06-27 18:23:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788291504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:57,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:57,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862116709] [2024-06-27 18:23:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:57,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:57,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:23:57,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:57,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:57,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:23:57,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:58,012 INFO L124 PetriNetUnfolderBase]: 559/1063 cut-off events. [2024-06-27 18:23:58,012 INFO L125 PetriNetUnfolderBase]: For 1938/1950 co-relation queries the response was YES. [2024-06-27 18:23:58,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1063 events. 559/1063 cut-off events. For 1938/1950 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5518 event pairs, 210 based on Foata normal form. 9/1026 useless extension candidates. Maximal degree in co-relation 3129. Up to 872 conditions per place. [2024-06-27 18:23:58,019 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 59 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-27 18:23:58,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 539 flow [2024-06-27 18:23:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:58,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:58,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 18:23:58,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 18:23:58,020 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 325 flow. Second operand 6 states and 100 transitions. [2024-06-27 18:23:58,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 539 flow [2024-06-27 18:23:58,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 520 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:58,026 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 353 flow [2024-06-27 18:23:58,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 18:23:58,027 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-27 18:23:58,027 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 353 flow [2024-06-27 18:23:58,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:58,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:23:58,028 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 18:23:58,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash 681282037, now seen corresponding path program 1 times [2024-06-27 18:23:58,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081654050] [2024-06-27 18:23:58,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:58,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:58,530 INFO 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 18:23:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081654050] [2024-06-27 18:23:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081654050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:58,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632595051] [2024-06-27 18:23:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:58,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:58,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:58,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:23:58,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:58,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:23:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:58,965 INFO L124 PetriNetUnfolderBase]: 623/1177 cut-off events. [2024-06-27 18:23:58,965 INFO L125 PetriNetUnfolderBase]: For 2534/2534 co-relation queries the response was YES. [2024-06-27 18:23:58,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 1177 events. 623/1177 cut-off events. For 2534/2534 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6091 event pairs, 174 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 3658. Up to 914 conditions per place. [2024-06-27 18:23:58,973 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 69 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-27 18:23:58,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 739 flow [2024-06-27 18:23:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:23:58,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 18:23:58,975 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 353 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:23:58,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 739 flow [2024-06-27 18:23:58,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 702 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:23:58,981 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 538 flow [2024-06-27 18:23:58,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-27 18:23:58,983 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-27 18:23:58,983 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 538 flow [2024-06-27 18:23:58,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:58,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:58,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:23:58,984 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 18:23:58,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash -727896715, now seen corresponding path program 2 times [2024-06-27 18:23:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33183509] [2024-06-27 18:23:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:59,539 INFO 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 18:23:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:59,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33183509] [2024-06-27 18:23:59,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33183509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:59,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:59,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:59,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234973807] [2024-06-27 18:23:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:59,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:59,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:59,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:59,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:59,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:23:59,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 538 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:59,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:59,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:23:59,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:00,001 INFO L124 PetriNetUnfolderBase]: 645/1210 cut-off events. [2024-06-27 18:24:00,002 INFO L125 PetriNetUnfolderBase]: For 3565/3565 co-relation queries the response was YES. [2024-06-27 18:24:00,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4274 conditions, 1210 events. 645/1210 cut-off events. For 3565/3565 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6267 event pairs, 170 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 4241. Up to 924 conditions per place. [2024-06-27 18:24:00,012 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 66 selfloop transitions, 38 changer transitions 0/110 dead transitions. [2024-06-27 18:24:00,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 898 flow [2024-06-27 18:24:00,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:24:00,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 18:24:00,015 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 538 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:24:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 898 flow [2024-06-27 18:24:00,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 849 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:00,023 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 661 flow [2024-06-27 18:24:00,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2024-06-27 18:24:00,024 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-06-27 18:24:00,024 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 661 flow [2024-06-27 18:24:00,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:00,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:00,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:00,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:24:00,025 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 18:24:00,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash -727775815, now seen corresponding path program 3 times [2024-06-27 18:24:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:00,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056890002] [2024-06-27 18:24:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:00,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:00,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056890002] [2024-06-27 18:24:00,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056890002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:00,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:00,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133579557] [2024-06-27 18:24:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:00,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:00,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:00,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:00,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:00,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:00,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:00,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:00,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:00,978 INFO L124 PetriNetUnfolderBase]: 681/1252 cut-off events. [2024-06-27 18:24:00,978 INFO L125 PetriNetUnfolderBase]: For 5123/5123 co-relation queries the response was YES. [2024-06-27 18:24:00,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1252 events. 681/1252 cut-off events. For 5123/5123 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6381 event pairs, 173 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 4885. Up to 927 conditions per place. [2024-06-27 18:24:00,988 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 73 selfloop transitions, 39 changer transitions 0/118 dead transitions. [2024-06-27 18:24:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1083 flow [2024-06-27 18:24:00,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:24:00,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 18:24:00,990 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 661 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:24:00,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1083 flow [2024-06-27 18:24:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 995 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:01,006 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 785 flow [2024-06-27 18:24:01,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=785, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2024-06-27 18:24:01,007 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-06-27 18:24:01,007 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 785 flow [2024-06-27 18:24:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:01,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:01,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:24:01,010 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 18:24:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash -673068166, now seen corresponding path program 1 times [2024-06-27 18:24:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:01,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912900392] [2024-06-27 18:24:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:01,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912900392] [2024-06-27 18:24:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912900392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218949855] [2024-06-27 18:24:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:01,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 785 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:02,065 INFO L124 PetriNetUnfolderBase]: 694/1266 cut-off events. [2024-06-27 18:24:02,066 INFO L125 PetriNetUnfolderBase]: For 5289/5289 co-relation queries the response was YES. [2024-06-27 18:24:02,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1266 events. 694/1266 cut-off events. For 5289/5289 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6425 event pairs, 170 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 4955. Up to 1080 conditions per place. [2024-06-27 18:24:02,076 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 18:24:02,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 121 transitions, 1132 flow [2024-06-27 18:24:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 18:24:02,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-27 18:24:02,078 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 785 flow. Second operand 7 states and 115 transitions. [2024-06-27 18:24:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 121 transitions, 1132 flow [2024-06-27 18:24:02,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 1056 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:02,090 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 782 flow [2024-06-27 18:24:02,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2024-06-27 18:24:02,091 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-06-27 18:24:02,092 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 782 flow [2024-06-27 18:24:02,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:02,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:02,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:02,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:24:02,092 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 18:24:02,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1193641792, now seen corresponding path program 2 times [2024-06-27 18:24:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507161358] [2024-06-27 18:24:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:02,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:02,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:02,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507161358] [2024-06-27 18:24:02,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507161358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:02,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:02,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:02,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293382380] [2024-06-27 18:24:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:02,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:02,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:02,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:02,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:02,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:02,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:03,222 INFO L124 PetriNetUnfolderBase]: 712/1295 cut-off events. [2024-06-27 18:24:03,222 INFO L125 PetriNetUnfolderBase]: For 5737/5752 co-relation queries the response was YES. [2024-06-27 18:24:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 1295 events. 712/1295 cut-off events. For 5737/5752 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6601 event pairs, 159 based on Foata normal form. 11/1261 useless extension candidates. Maximal degree in co-relation 5154. Up to 1048 conditions per place. [2024-06-27 18:24:03,243 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2024-06-27 18:24:03,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1227 flow [2024-06-27 18:24:03,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:24:03,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-27 18:24:03,245 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 782 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:24:03,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1227 flow [2024-06-27 18:24:03,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 1182 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:03,261 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 885 flow [2024-06-27 18:24:03,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-27 18:24:03,263 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-06-27 18:24:03,263 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 885 flow [2024-06-27 18:24:03,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:03,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:03,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:03,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:24:03,264 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 18:24:03,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1498411379, now seen corresponding path program 4 times [2024-06-27 18:24:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:03,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110778050] [2024-06-27 18:24:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110778050] [2024-06-27 18:24:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110778050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979593735] [2024-06-27 18:24:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:03,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:03,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:03,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:03,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:03,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:03,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:04,192 INFO L124 PetriNetUnfolderBase]: 708/1292 cut-off events. [2024-06-27 18:24:04,192 INFO L125 PetriNetUnfolderBase]: For 6708/6714 co-relation queries the response was YES. [2024-06-27 18:24:04,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1292 events. 708/1292 cut-off events. For 6708/6714 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6594 event pairs, 163 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 5405. Up to 931 conditions per place. [2024-06-27 18:24:04,201 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 87 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-27 18:24:04,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 1409 flow [2024-06-27 18:24:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:24:04,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:24:04,203 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 885 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:24:04,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 1409 flow [2024-06-27 18:24:04,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 1360 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:04,218 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 1135 flow [2024-06-27 18:24:04,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-06-27 18:24:04,219 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-06-27 18:24:04,219 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 1135 flow [2024-06-27 18:24:04,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:04,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:04,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:24:04,220 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 18:24:04,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -549721518, now seen corresponding path program 3 times [2024-06-27 18:24:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:04,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299578587] [2024-06-27 18:24:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299578587] [2024-06-27 18:24:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299578587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:04,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:24:04,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541884849] [2024-06-27 18:24:04,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:04,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:24:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:04,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:24:04,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:24:05,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:05,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 1135 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:05,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:05,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:05,366 INFO L124 PetriNetUnfolderBase]: 706/1310 cut-off events. [2024-06-27 18:24:05,366 INFO L125 PetriNetUnfolderBase]: For 8139/8154 co-relation queries the response was YES. [2024-06-27 18:24:05,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1310 events. 706/1310 cut-off events. For 8139/8154 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6871 event pairs, 158 based on Foata normal form. 11/1268 useless extension candidates. Maximal degree in co-relation 5834. Up to 1076 conditions per place. [2024-06-27 18:24:05,376 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 115 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-27 18:24:05,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 1556 flow [2024-06-27 18:24:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 18:24:05,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-27 18:24:05,377 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 1135 flow. Second operand 7 states and 116 transitions. [2024-06-27 18:24:05,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 1556 flow [2024-06-27 18:24:05,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 1445 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:05,398 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 1104 flow [2024-06-27 18:24:05,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1104, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-06-27 18:24:05,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-27 18:24:05,399 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 1104 flow [2024-06-27 18:24:05,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:05,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:05,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:05,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:24:05,399 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 18:24:05,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1920200354, now seen corresponding path program 1 times [2024-06-27 18:24:05,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:05,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853495613] [2024-06-27 18:24:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:05,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853495613] [2024-06-27 18:24:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853495613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:06,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:06,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21391174] [2024-06-27 18:24:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:06,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:06,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:06,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:06,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 1104 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:06,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:06,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:06,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:06,745 INFO L124 PetriNetUnfolderBase]: 704/1285 cut-off events. [2024-06-27 18:24:06,745 INFO L125 PetriNetUnfolderBase]: For 7842/7842 co-relation queries the response was YES. [2024-06-27 18:24:06,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1285 events. 704/1285 cut-off events. For 7842/7842 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6544 event pairs, 171 based on Foata normal form. 1/1242 useless extension candidates. Maximal degree in co-relation 5787. Up to 997 conditions per place. [2024-06-27 18:24:06,755 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 103 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-27 18:24:06,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1504 flow [2024-06-27 18:24:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:24:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:24:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:24:06,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:24:06,758 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 1104 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:24:06,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1504 flow [2024-06-27 18:24:06,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 1419 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:06,779 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 1143 flow [2024-06-27 18:24:06,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1143, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-27 18:24:06,780 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2024-06-27 18:24:06,780 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 1143 flow [2024-06-27 18:24:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:06,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:06,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:06,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:24:06,781 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 18:24:06,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1089960740, now seen corresponding path program 1 times [2024-06-27 18:24:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:06,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979455560] [2024-06-27 18:24:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:07,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:07,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979455560] [2024-06-27 18:24:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979455560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:07,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550129548] [2024-06-27 18:24:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:07,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:07,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:07,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:07,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 1143 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:07,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:07,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:07,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:07,936 INFO L124 PetriNetUnfolderBase]: 739/1364 cut-off events. [2024-06-27 18:24:07,936 INFO L125 PetriNetUnfolderBase]: For 8863/8863 co-relation queries the response was YES. [2024-06-27 18:24:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 1364 events. 739/1364 cut-off events. For 8863/8863 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7163 event pairs, 163 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 6131. Up to 996 conditions per place. [2024-06-27 18:24:07,947 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 115 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-27 18:24:07,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 165 transitions, 1673 flow [2024-06-27 18:24:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:07,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:24:07,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:24:07,949 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 1143 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:24:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 165 transitions, 1673 flow [2024-06-27 18:24:07,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1609 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:07,970 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1305 flow [2024-06-27 18:24:07,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1305, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-27 18:24:07,971 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-27 18:24:07,971 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1305 flow [2024-06-27 18:24:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:07,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:07,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:24:07,972 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 18:24:07,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1086212840, now seen corresponding path program 2 times [2024-06-27 18:24:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:07,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600977905] [2024-06-27 18:24:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:08,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:08,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600977905] [2024-06-27 18:24:08,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600977905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:08,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:08,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:08,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121926006] [2024-06-27 18:24:08,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:08,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:08,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:08,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1305 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:08,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:08,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:09,180 INFO L124 PetriNetUnfolderBase]: 780/1450 cut-off events. [2024-06-27 18:24:09,181 INFO L125 PetriNetUnfolderBase]: For 11111/11111 co-relation queries the response was YES. [2024-06-27 18:24:09,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1450 events. 780/1450 cut-off events. For 11111/11111 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7830 event pairs, 172 based on Foata normal form. 2/1392 useless extension candidates. Maximal degree in co-relation 6920. Up to 995 conditions per place. [2024-06-27 18:24:09,193 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 118 selfloop transitions, 47 changer transitions 0/171 dead transitions. [2024-06-27 18:24:09,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 171 transitions, 1869 flow [2024-06-27 18:24:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:24:09,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:24:09,199 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1305 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:24:09,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 171 transitions, 1869 flow [2024-06-27 18:24:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 171 transitions, 1808 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:09,228 INFO L231 Difference]: Finished difference. Result has 112 places, 138 transitions, 1496 flow [2024-06-27 18:24:09,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1496, PETRI_PLACES=112, PETRI_TRANSITIONS=138} [2024-06-27 18:24:09,228 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-06-27 18:24:09,229 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 138 transitions, 1496 flow [2024-06-27 18:24:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:09,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:09,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:24:09,229 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 18:24:09,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206082, now seen corresponding path program 1 times [2024-06-27 18:24:09,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:09,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669508858] [2024-06-27 18:24:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:09,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:09,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669508858] [2024-06-27 18:24:09,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669508858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:09,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:09,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:09,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924518481] [2024-06-27 18:24:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:09,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:09,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:09,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 138 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:09,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:09,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:09,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:10,411 INFO L124 PetriNetUnfolderBase]: 806/1460 cut-off events. [2024-06-27 18:24:10,411 INFO L125 PetriNetUnfolderBase]: For 13828/13828 co-relation queries the response was YES. [2024-06-27 18:24:10,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1460 events. 806/1460 cut-off events. For 13828/13828 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7690 event pairs, 191 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 7502. Up to 1232 conditions per place. [2024-06-27 18:24:10,424 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 145 selfloop transitions, 20 changer transitions 0/171 dead transitions. [2024-06-27 18:24:10,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 171 transitions, 1982 flow [2024-06-27 18:24:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:24:10,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:24:10,426 INFO L175 Difference]: Start difference. First operand has 112 places, 138 transitions, 1496 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:24:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 171 transitions, 1982 flow [2024-06-27 18:24:10,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 1881 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:10,488 INFO L231 Difference]: Finished difference. Result has 117 places, 141 transitions, 1491 flow [2024-06-27 18:24:10,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1491, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2024-06-27 18:24:10,489 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-27 18:24:10,490 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 1491 flow [2024-06-27 18:24:10,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:10,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:10,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:24:10,491 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 18:24:10,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206330, now seen corresponding path program 3 times [2024-06-27 18:24:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:10,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277581290] [2024-06-27 18:24:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:10,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:11,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277581290] [2024-06-27 18:24:11,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277581290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:11,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:11,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:11,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084196687] [2024-06-27 18:24:11,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:11,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:11,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:11,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:11,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 1491 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:11,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:11,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:11,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:11,677 INFO L124 PetriNetUnfolderBase]: 832/1512 cut-off events. [2024-06-27 18:24:11,678 INFO L125 PetriNetUnfolderBase]: For 13895/13895 co-relation queries the response was YES. [2024-06-27 18:24:11,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 1512 events. 832/1512 cut-off events. For 13895/13895 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8054 event pairs, 195 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 7753. Up to 1272 conditions per place. [2024-06-27 18:24:11,691 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 148 selfloop transitions, 20 changer transitions 0/174 dead transitions. [2024-06-27 18:24:11,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 174 transitions, 1991 flow [2024-06-27 18:24:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:24:11,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:24:11,693 INFO L175 Difference]: Start difference. First operand has 117 places, 141 transitions, 1491 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:24:11,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 174 transitions, 1991 flow [2024-06-27 18:24:11,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 174 transitions, 1919 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:11,723 INFO L231 Difference]: Finished difference. Result has 119 places, 144 transitions, 1519 flow [2024-06-27 18:24:11,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1519, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2024-06-27 18:24:11,724 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2024-06-27 18:24:11,724 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 1519 flow [2024-06-27 18:24:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:11,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:11,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:11,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:24:11,724 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 18:24:11,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 138503102, now seen corresponding path program 2 times [2024-06-27 18:24:11,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:11,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620103835] [2024-06-27 18:24:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:12,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:12,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620103835] [2024-06-27 18:24:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620103835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:12,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:12,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261363773] [2024-06-27 18:24:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:12,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:12,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 144 transitions, 1519 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:12,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:12,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:12,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:13,225 INFO L124 PetriNetUnfolderBase]: 858/1580 cut-off events. [2024-06-27 18:24:13,225 INFO L125 PetriNetUnfolderBase]: For 15750/15750 co-relation queries the response was YES. [2024-06-27 18:24:13,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8120 conditions, 1580 events. 858/1580 cut-off events. For 15750/15750 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8685 event pairs, 269 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 8064. Up to 1289 conditions per place. [2024-06-27 18:24:13,241 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 145 selfloop transitions, 30 changer transitions 0/181 dead transitions. [2024-06-27 18:24:13,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 181 transitions, 2090 flow [2024-06-27 18:24:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:13,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:24:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 18:24:13,243 INFO L175 Difference]: Start difference. First operand has 119 places, 144 transitions, 1519 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:24:13,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 181 transitions, 2090 flow [2024-06-27 18:24:13,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 181 transitions, 2008 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:13,275 INFO L231 Difference]: Finished difference. Result has 123 places, 150 transitions, 1600 flow [2024-06-27 18:24:13,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1600, PETRI_PLACES=123, PETRI_TRANSITIONS=150} [2024-06-27 18:24:13,276 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 83 predicate places. [2024-06-27 18:24:13,276 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 150 transitions, 1600 flow [2024-06-27 18:24:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:13,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:13,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:13,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:24:13,277 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 18:24:13,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 138502854, now seen corresponding path program 4 times [2024-06-27 18:24:13,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:13,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490740034] [2024-06-27 18:24:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:13,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:13,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:13,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490740034] [2024-06-27 18:24:13,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490740034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:13,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:13,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:13,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204956059] [2024-06-27 18:24:13,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:13,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:13,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:13,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:13,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 150 transitions, 1600 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:13,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:13,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:13,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:14,412 INFO L124 PetriNetUnfolderBase]: 884/1620 cut-off events. [2024-06-27 18:24:14,413 INFO L125 PetriNetUnfolderBase]: For 17035/17035 co-relation queries the response was YES. [2024-06-27 18:24:14,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 1620 events. 884/1620 cut-off events. For 17035/17035 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8922 event pairs, 185 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 8392. Up to 1329 conditions per place. [2024-06-27 18:24:14,427 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 149 selfloop transitions, 28 changer transitions 0/183 dead transitions. [2024-06-27 18:24:14,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 183 transitions, 2134 flow [2024-06-27 18:24:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:24:14,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 18:24:14,429 INFO L175 Difference]: Start difference. First operand has 123 places, 150 transitions, 1600 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:24:14,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 183 transitions, 2134 flow [2024-06-27 18:24:14,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 183 transitions, 2045 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:14,471 INFO L231 Difference]: Finished difference. Result has 126 places, 153 transitions, 1635 flow [2024-06-27 18:24:14,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1635, PETRI_PLACES=126, PETRI_TRANSITIONS=153} [2024-06-27 18:24:14,472 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2024-06-27 18:24:14,472 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 153 transitions, 1635 flow [2024-06-27 18:24:14,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:14,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:14,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:14,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:24:14,473 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 18:24:14,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash 138496344, now seen corresponding path program 5 times [2024-06-27 18:24:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:14,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720753856] [2024-06-27 18:24:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:14,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:15,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720753856] [2024-06-27 18:24:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720753856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:15,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851731937] [2024-06-27 18:24:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:15,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:15,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 153 transitions, 1635 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:15,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:15,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:15,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:15,774 INFO L124 PetriNetUnfolderBase]: 910/1639 cut-off events. [2024-06-27 18:24:15,775 INFO L125 PetriNetUnfolderBase]: For 18436/18436 co-relation queries the response was YES. [2024-06-27 18:24:15,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8719 conditions, 1639 events. 910/1639 cut-off events. For 18436/18436 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8835 event pairs, 160 based on Foata normal form. 2/1581 useless extension candidates. Maximal degree in co-relation 8659. Up to 1133 conditions per place. [2024-06-27 18:24:15,790 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 127 selfloop transitions, 60 changer transitions 0/193 dead transitions. [2024-06-27 18:24:15,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 193 transitions, 2287 flow [2024-06-27 18:24:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:24:15,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:24:15,792 INFO L175 Difference]: Start difference. First operand has 126 places, 153 transitions, 1635 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:24:15,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 193 transitions, 2287 flow [2024-06-27 18:24:15,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 193 transitions, 2185 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:15,836 INFO L231 Difference]: Finished difference. Result has 130 places, 162 transitions, 1882 flow [2024-06-27 18:24:15,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1882, PETRI_PLACES=130, PETRI_TRANSITIONS=162} [2024-06-27 18:24:15,836 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 90 predicate places. [2024-06-27 18:24:15,836 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 162 transitions, 1882 flow [2024-06-27 18:24:15,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:15,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:15,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:15,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:24:15,837 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 18:24:15,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 146777064, now seen corresponding path program 6 times [2024-06-27 18:24:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:15,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314112573] [2024-06-27 18:24:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314112573] [2024-06-27 18:24:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314112573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:16,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:16,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:16,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383592481] [2024-06-27 18:24:16,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:16,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:16,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 162 transitions, 1882 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:16,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:16,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:16,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:16,989 INFO L124 PetriNetUnfolderBase]: 926/1670 cut-off events. [2024-06-27 18:24:16,990 INFO L125 PetriNetUnfolderBase]: For 21609/21609 co-relation queries the response was YES. [2024-06-27 18:24:16,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9271 conditions, 1670 events. 926/1670 cut-off events. For 21609/21609 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9076 event pairs, 190 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 9208. Up to 1310 conditions per place. [2024-06-27 18:24:17,003 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 151 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-27 18:24:17,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 196 transitions, 2460 flow [2024-06-27 18:24:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:17,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:24:17,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:17,005 INFO L175 Difference]: Start difference. First operand has 130 places, 162 transitions, 1882 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:24:17,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 196 transitions, 2460 flow [2024-06-27 18:24:17,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 196 transitions, 2325 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:17,059 INFO L231 Difference]: Finished difference. Result has 136 places, 165 transitions, 1905 flow [2024-06-27 18:24:17,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1747, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1905, PETRI_PLACES=136, PETRI_TRANSITIONS=165} [2024-06-27 18:24:17,060 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 96 predicate places. [2024-06-27 18:24:17,060 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 165 transitions, 1905 flow [2024-06-27 18:24:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:17,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:17,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:24:17,060 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 18:24:17,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 146777312, now seen corresponding path program 3 times [2024-06-27 18:24:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:17,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225777470] [2024-06-27 18:24:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225777470] [2024-06-27 18:24:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225777470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270467976] [2024-06-27 18:24:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:17,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:17,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 165 transitions, 1905 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:17,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:17,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:17,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:18,224 INFO L124 PetriNetUnfolderBase]: 944/1704 cut-off events. [2024-06-27 18:24:18,224 INFO L125 PetriNetUnfolderBase]: For 21967/21967 co-relation queries the response was YES. [2024-06-27 18:24:18,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 1704 events. 944/1704 cut-off events. For 21967/21967 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9305 event pairs, 185 based on Foata normal form. 1/1644 useless extension candidates. Maximal degree in co-relation 9434. Up to 1349 conditions per place. [2024-06-27 18:24:18,237 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 160 selfloop transitions, 42 changer transitions 0/208 dead transitions. [2024-06-27 18:24:18,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 208 transitions, 2617 flow [2024-06-27 18:24:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:18,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:18,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:24:18,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:18,239 INFO L175 Difference]: Start difference. First operand has 136 places, 165 transitions, 1905 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:24:18,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 208 transitions, 2617 flow [2024-06-27 18:24:18,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 208 transitions, 2481 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:18,294 INFO L231 Difference]: Finished difference. Result has 139 places, 178 transitions, 2038 flow [2024-06-27 18:24:18,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2038, PETRI_PLACES=139, PETRI_TRANSITIONS=178} [2024-06-27 18:24:18,295 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-27 18:24:18,295 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 178 transitions, 2038 flow [2024-06-27 18:24:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:18,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:24:18,296 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:18,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 147073982, now seen corresponding path program 4 times [2024-06-27 18:24:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144322384] [2024-06-27 18:24:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:18,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:19,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:19,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144322384] [2024-06-27 18:24:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144322384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:24:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499975354] [2024-06-27 18:24:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:19,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:24:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:24:19,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:24:19,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:19,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 178 transitions, 2038 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:19,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:19,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:19,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:19,537 INFO L124 PetriNetUnfolderBase]: 942/1688 cut-off events. [2024-06-27 18:24:19,537 INFO L125 PetriNetUnfolderBase]: For 21901/21901 co-relation queries the response was YES. [2024-06-27 18:24:19,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 1688 events. 942/1688 cut-off events. For 21901/21901 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9099 event pairs, 208 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 9432. Up to 1463 conditions per place. [2024-06-27 18:24:19,553 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 181 selfloop transitions, 18 changer transitions 0/205 dead transitions. [2024-06-27 18:24:19,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 205 transitions, 2536 flow [2024-06-27 18:24:19,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:19,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 18:24:19,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-27 18:24:19,558 INFO L175 Difference]: Start difference. First operand has 139 places, 178 transitions, 2038 flow. Second operand 8 states and 130 transitions. [2024-06-27 18:24:19,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 205 transitions, 2536 flow [2024-06-27 18:24:19,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 205 transitions, 2416 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:19,625 INFO L231 Difference]: Finished difference. Result has 145 places, 179 transitions, 1971 flow [2024-06-27 18:24:19,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1971, PETRI_PLACES=145, PETRI_TRANSITIONS=179} [2024-06-27 18:24:19,626 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 105 predicate places. [2024-06-27 18:24:19,626 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 179 transitions, 1971 flow [2024-06-27 18:24:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:19,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:19,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:19,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:24:19,627 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 18:24:19,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:19,627 INFO L85 PathProgramCache]: Analyzing trace with hash 147084894, now seen corresponding path program 1 times [2024-06-27 18:24:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284500243] [2024-06-27 18:24:19,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:20,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:20,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284500243] [2024-06-27 18:24:20,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284500243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:20,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:20,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:20,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220365653] [2024-06-27 18:24:20,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:20,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:20,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:20,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:20,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:20,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 179 transitions, 1971 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:20,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:20,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:20,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:21,098 INFO L124 PetriNetUnfolderBase]: 946/1696 cut-off events. [2024-06-27 18:24:21,099 INFO L125 PetriNetUnfolderBase]: For 21834/21834 co-relation queries the response was YES. [2024-06-27 18:24:21,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1696 events. 946/1696 cut-off events. For 21834/21834 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9204 event pairs, 205 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 9427. Up to 1447 conditions per place. [2024-06-27 18:24:21,116 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 187 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2024-06-27 18:24:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 213 transitions, 2546 flow [2024-06-27 18:24:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:21,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:24:21,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 18:24:21,138 INFO L175 Difference]: Start difference. First operand has 145 places, 179 transitions, 1971 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:24:21,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 213 transitions, 2546 flow [2024-06-27 18:24:21,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 213 transitions, 2488 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:21,185 INFO L231 Difference]: Finished difference. Result has 148 places, 181 transitions, 2008 flow [2024-06-27 18:24:21,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2008, PETRI_PLACES=148, PETRI_TRANSITIONS=181} [2024-06-27 18:24:21,186 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 108 predicate places. [2024-06-27 18:24:21,186 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 181 transitions, 2008 flow [2024-06-27 18:24:21,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:21,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:21,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:24:21,187 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 18:24:21,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1602298332, now seen corresponding path program 1 times [2024-06-27 18:24:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800017253] [2024-06-27 18:24:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:21,803 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 18:24:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:21,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800017253] [2024-06-27 18:24:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800017253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:21,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:21,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787768586] [2024-06-27 18:24:21,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:21,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:21,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:21,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:21,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:21,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 181 transitions, 2008 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:21,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:21,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:22,536 INFO L124 PetriNetUnfolderBase]: 968/1714 cut-off events. [2024-06-27 18:24:22,537 INFO L125 PetriNetUnfolderBase]: For 23175/23175 co-relation queries the response was YES. [2024-06-27 18:24:22,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9779 conditions, 1714 events. 968/1714 cut-off events. For 23175/23175 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9146 event pairs, 166 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 9708. Up to 1411 conditions per place. [2024-06-27 18:24:22,554 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 170 selfloop transitions, 43 changer transitions 0/219 dead transitions. [2024-06-27 18:24:22,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 219 transitions, 2682 flow [2024-06-27 18:24:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:24:22,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:22,556 INFO L175 Difference]: Start difference. First operand has 148 places, 181 transitions, 2008 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:24:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 219 transitions, 2682 flow [2024-06-27 18:24:22,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 219 transitions, 2590 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:22,621 INFO L231 Difference]: Finished difference. Result has 151 places, 193 transitions, 2209 flow [2024-06-27 18:24:22,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2209, PETRI_PLACES=151, PETRI_TRANSITIONS=193} [2024-06-27 18:24:22,624 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 111 predicate places. [2024-06-27 18:24:22,624 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 193 transitions, 2209 flow [2024-06-27 18:24:22,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:22,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:22,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:22,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:24:22,625 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 18:24:22,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1101265819, now seen corresponding path program 1 times [2024-06-27 18:24:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:22,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112139189] [2024-06-27 18:24:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:22,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:23,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:23,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112139189] [2024-06-27 18:24:23,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112139189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:23,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:23,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381324827] [2024-06-27 18:24:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:23,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:23,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:23,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:23,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 193 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:23,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:23,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:24,498 INFO L124 PetriNetUnfolderBase]: 979/1765 cut-off events. [2024-06-27 18:24:24,498 INFO L125 PetriNetUnfolderBase]: For 24579/24579 co-relation queries the response was YES. [2024-06-27 18:24:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10171 conditions, 1765 events. 979/1765 cut-off events. For 24579/24579 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9671 event pairs, 197 based on Foata normal form. 1/1706 useless extension candidates. Maximal degree in co-relation 10097. Up to 1340 conditions per place. [2024-06-27 18:24:24,514 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 171 selfloop transitions, 58 changer transitions 0/235 dead transitions. [2024-06-27 18:24:24,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 235 transitions, 2965 flow [2024-06-27 18:24:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:24:24,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-27 18:24:24,519 INFO L175 Difference]: Start difference. First operand has 151 places, 193 transitions, 2209 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:24:24,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 235 transitions, 2965 flow [2024-06-27 18:24:24,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 235 transitions, 2847 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:24,590 INFO L231 Difference]: Finished difference. Result has 156 places, 202 transitions, 2421 flow [2024-06-27 18:24:24,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2421, PETRI_PLACES=156, PETRI_TRANSITIONS=202} [2024-06-27 18:24:24,603 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 116 predicate places. [2024-06-27 18:24:24,603 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 202 transitions, 2421 flow [2024-06-27 18:24:24,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:24,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:24,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:24,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:24:24,604 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 18:24:24,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash 681628822, now seen corresponding path program 2 times [2024-06-27 18:24:24,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:24,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614108833] [2024-06-27 18:24:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:24,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:25,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:25,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614108833] [2024-06-27 18:24:25,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614108833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:25,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:25,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:25,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72622292] [2024-06-27 18:24:25,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:25,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:25,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:25,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:25,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:25,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 202 transitions, 2421 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:25,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:25,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:25,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:26,585 INFO L124 PetriNetUnfolderBase]: 1066/1869 cut-off events. [2024-06-27 18:24:26,586 INFO L125 PetriNetUnfolderBase]: For 30034/30034 co-relation queries the response was YES. [2024-06-27 18:24:26,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11598 conditions, 1869 events. 1066/1869 cut-off events. For 30034/30034 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10079 event pairs, 225 based on Foata normal form. 2/1819 useless extension candidates. Maximal degree in co-relation 11523. Up to 1528 conditions per place. [2024-06-27 18:24:26,604 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 193 selfloop transitions, 63 changer transitions 0/262 dead transitions. [2024-06-27 18:24:26,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 262 transitions, 3741 flow [2024-06-27 18:24:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:24:26,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 18:24:26,608 INFO L175 Difference]: Start difference. First operand has 156 places, 202 transitions, 2421 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:24:26,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 262 transitions, 3741 flow [2024-06-27 18:24:26,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 262 transitions, 3613 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:26,697 INFO L231 Difference]: Finished difference. Result has 165 places, 231 transitions, 3141 flow [2024-06-27 18:24:26,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3141, PETRI_PLACES=165, PETRI_TRANSITIONS=231} [2024-06-27 18:24:26,698 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-06-27 18:24:26,699 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 231 transitions, 3141 flow [2024-06-27 18:24:26,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:26,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:26,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:26,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:24:26,700 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 18:24:26,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:26,700 INFO L85 PathProgramCache]: Analyzing trace with hash -421672874, now seen corresponding path program 3 times [2024-06-27 18:24:26,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:26,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707880556] [2024-06-27 18:24:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:27,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707880556] [2024-06-27 18:24:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707880556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:27,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:27,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123374357] [2024-06-27 18:24:27,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:27,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:27,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 231 transitions, 3141 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:28,281 INFO L124 PetriNetUnfolderBase]: 1147/2000 cut-off events. [2024-06-27 18:24:28,282 INFO L125 PetriNetUnfolderBase]: For 34872/34872 co-relation queries the response was YES. [2024-06-27 18:24:28,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12996 conditions, 2000 events. 1147/2000 cut-off events. For 34872/34872 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10908 event pairs, 271 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 12917. Up to 1631 conditions per place. [2024-06-27 18:24:28,371 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 198 selfloop transitions, 84 changer transitions 0/288 dead transitions. [2024-06-27 18:24:28,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 288 transitions, 4415 flow [2024-06-27 18:24:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:24:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:28,375 INFO L175 Difference]: Start difference. First operand has 165 places, 231 transitions, 3141 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:24:28,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 288 transitions, 4415 flow [2024-06-27 18:24:28,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 288 transitions, 4253 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-27 18:24:28,492 INFO L231 Difference]: Finished difference. Result has 174 places, 257 transitions, 3827 flow [2024-06-27 18:24:28,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3827, PETRI_PLACES=174, PETRI_TRANSITIONS=257} [2024-06-27 18:24:28,494 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 134 predicate places. [2024-06-27 18:24:28,494 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 257 transitions, 3827 flow [2024-06-27 18:24:28,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:28,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:28,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:28,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:24:28,495 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 18:24:28,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:28,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2127110524, now seen corresponding path program 1 times [2024-06-27 18:24:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:28,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877112181] [2024-06-27 18:24:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:28,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:29,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:29,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877112181] [2024-06-27 18:24:29,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877112181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:29,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:29,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:29,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412771324] [2024-06-27 18:24:29,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:29,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:29,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:29,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 257 transitions, 3827 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:29,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:29,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:30,202 INFO L124 PetriNetUnfolderBase]: 1205/2096 cut-off events. [2024-06-27 18:24:30,203 INFO L125 PetriNetUnfolderBase]: For 38698/38698 co-relation queries the response was YES. [2024-06-27 18:24:30,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13733 conditions, 2096 events. 1205/2096 cut-off events. For 38698/38698 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11509 event pairs, 227 based on Foata normal form. 2/2046 useless extension candidates. Maximal degree in co-relation 13650. Up to 1658 conditions per place. [2024-06-27 18:24:30,227 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 223 selfloop transitions, 81 changer transitions 0/310 dead transitions. [2024-06-27 18:24:30,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 310 transitions, 4775 flow [2024-06-27 18:24:30,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:24:30,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:24:30,230 INFO L175 Difference]: Start difference. First operand has 174 places, 257 transitions, 3827 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:24:30,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 310 transitions, 4775 flow [2024-06-27 18:24:30,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 310 transitions, 4584 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:30,365 INFO L231 Difference]: Finished difference. Result has 182 places, 270 transitions, 4049 flow [2024-06-27 18:24:30,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3638, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4049, PETRI_PLACES=182, PETRI_TRANSITIONS=270} [2024-06-27 18:24:30,366 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-27 18:24:30,366 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 270 transitions, 4049 flow [2024-06-27 18:24:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:30,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:30,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:30,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:24:30,367 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 18:24:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1684010470, now seen corresponding path program 4 times [2024-06-27 18:24:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127012303] [2024-06-27 18:24:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:30,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:31,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127012303] [2024-06-27 18:24:31,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127012303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:31,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:31,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:31,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316463983] [2024-06-27 18:24:31,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:31,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:31,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:31,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:31,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:31,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 270 transitions, 4049 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:31,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:31,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:31,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:32,296 INFO L124 PetriNetUnfolderBase]: 1270/2207 cut-off events. [2024-06-27 18:24:32,296 INFO L125 PetriNetUnfolderBase]: For 42784/42784 co-relation queries the response was YES. [2024-06-27 18:24:32,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14841 conditions, 2207 events. 1270/2207 cut-off events. For 42784/42784 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12320 event pairs, 281 based on Foata normal form. 2/2154 useless extension candidates. Maximal degree in co-relation 14754. Up to 1794 conditions per place. [2024-06-27 18:24:32,318 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 226 selfloop transitions, 95 changer transitions 0/327 dead transitions. [2024-06-27 18:24:32,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 327 transitions, 5338 flow [2024-06-27 18:24:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:32,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:24:32,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:32,320 INFO L175 Difference]: Start difference. First operand has 182 places, 270 transitions, 4049 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:24:32,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 327 transitions, 5338 flow [2024-06-27 18:24:32,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 327 transitions, 5128 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:32,439 INFO L231 Difference]: Finished difference. Result has 187 places, 295 transitions, 4612 flow [2024-06-27 18:24:32,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4612, PETRI_PLACES=187, PETRI_TRANSITIONS=295} [2024-06-27 18:24:32,439 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 147 predicate places. [2024-06-27 18:24:32,440 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 295 transitions, 4612 flow [2024-06-27 18:24:32,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:32,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:32,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:32,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:24:32,440 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 18:24:32,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash -311144340, now seen corresponding path program 2 times [2024-06-27 18:24:32,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:32,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512013844] [2024-06-27 18:24:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:32,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:33,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:33,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512013844] [2024-06-27 18:24:33,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512013844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:33,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:33,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:33,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344516559] [2024-06-27 18:24:33,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:33,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:33,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:33,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:33,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:33,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 295 transitions, 4612 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:33,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:33,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:33,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:33,732 INFO L124 PetriNetUnfolderBase]: 1385/2404 cut-off events. [2024-06-27 18:24:33,732 INFO L125 PetriNetUnfolderBase]: For 47615/47615 co-relation queries the response was YES. [2024-06-27 18:24:33,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 2404 events. 1385/2404 cut-off events. For 47615/47615 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13677 event pairs, 305 based on Foata normal form. 2/2346 useless extension candidates. Maximal degree in co-relation 15937. Up to 1879 conditions per place. [2024-06-27 18:24:33,759 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 259 selfloop transitions, 96 changer transitions 0/361 dead transitions. [2024-06-27 18:24:33,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 361 transitions, 5828 flow [2024-06-27 18:24:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:33,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:33,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:24:33,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 18:24:33,761 INFO L175 Difference]: Start difference. First operand has 187 places, 295 transitions, 4612 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:24:33,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 361 transitions, 5828 flow [2024-06-27 18:24:33,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 361 transitions, 5677 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:33,884 INFO L231 Difference]: Finished difference. Result has 197 places, 319 transitions, 5118 flow [2024-06-27 18:24:33,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5118, PETRI_PLACES=197, PETRI_TRANSITIONS=319} [2024-06-27 18:24:33,886 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 157 predicate places. [2024-06-27 18:24:33,886 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 319 transitions, 5118 flow [2024-06-27 18:24:33,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:33,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:33,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:33,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:24:33,887 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 18:24:33,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:33,887 INFO L85 PathProgramCache]: Analyzing trace with hash 662927608, now seen corresponding path program 3 times [2024-06-27 18:24:33,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:33,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606246486] [2024-06-27 18:24:33,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:33,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:34,490 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 18:24:34,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:34,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606246486] [2024-06-27 18:24:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606246486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:34,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:34,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582831193] [2024-06-27 18:24:34,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:34,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:34,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:34,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 319 transitions, 5118 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:35,424 INFO L124 PetriNetUnfolderBase]: 1579/2709 cut-off events. [2024-06-27 18:24:35,424 INFO L125 PetriNetUnfolderBase]: For 58512/58512 co-relation queries the response was YES. [2024-06-27 18:24:35,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18489 conditions, 2709 events. 1579/2709 cut-off events. For 58512/58512 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15692 event pairs, 424 based on Foata normal form. 2/2651 useless extension candidates. Maximal degree in co-relation 18395. Up to 2277 conditions per place. [2024-06-27 18:24:35,457 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 338 selfloop transitions, 41 changer transitions 0/385 dead transitions. [2024-06-27 18:24:35,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 385 transitions, 6575 flow [2024-06-27 18:24:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:24:35,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 18:24:35,459 INFO L175 Difference]: Start difference. First operand has 197 places, 319 transitions, 5118 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:24:35,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 385 transitions, 6575 flow [2024-06-27 18:24:35,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 385 transitions, 6437 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:35,668 INFO L231 Difference]: Finished difference. Result has 207 places, 344 transitions, 5521 flow [2024-06-27 18:24:35,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5521, PETRI_PLACES=207, PETRI_TRANSITIONS=344} [2024-06-27 18:24:35,669 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-27 18:24:35,669 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 344 transitions, 5521 flow [2024-06-27 18:24:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:35,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:35,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:24:35,670 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 18:24:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -820199890, now seen corresponding path program 4 times [2024-06-27 18:24:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241743974] [2024-06-27 18:24:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:36,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:36,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241743974] [2024-06-27 18:24:36,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241743974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897054100] [2024-06-27 18:24:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:36,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:36,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:36,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:36,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 344 transitions, 5521 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:36,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:36,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:36,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:37,282 INFO L124 PetriNetUnfolderBase]: 1571/2694 cut-off events. [2024-06-27 18:24:37,283 INFO L125 PetriNetUnfolderBase]: For 59271/59271 co-relation queries the response was YES. [2024-06-27 18:24:37,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18581 conditions, 2694 events. 1571/2694 cut-off events. For 59271/59271 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15564 event pairs, 423 based on Foata normal form. 4/2639 useless extension candidates. Maximal degree in co-relation 18483. Up to 2273 conditions per place. [2024-06-27 18:24:37,317 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 338 selfloop transitions, 40 changer transitions 0/384 dead transitions. [2024-06-27 18:24:37,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 384 transitions, 6525 flow [2024-06-27 18:24:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:37,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:24:37,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:37,318 INFO L175 Difference]: Start difference. First operand has 207 places, 344 transitions, 5521 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:24:37,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 384 transitions, 6525 flow [2024-06-27 18:24:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 384 transitions, 6333 flow, removed 87 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:37,553 INFO L231 Difference]: Finished difference. Result has 215 places, 345 transitions, 5433 flow [2024-06-27 18:24:37,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5329, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5433, PETRI_PLACES=215, PETRI_TRANSITIONS=345} [2024-06-27 18:24:37,554 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 175 predicate places. [2024-06-27 18:24:37,554 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 345 transitions, 5433 flow [2024-06-27 18:24:37,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:37,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:37,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:24:37,554 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 18:24:37,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1678100330, now seen corresponding path program 5 times [2024-06-27 18:24:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032726901] [2024-06-27 18:24:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:37,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:38,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:38,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032726901] [2024-06-27 18:24:38,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032726901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:38,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522763165] [2024-06-27 18:24:38,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:38,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:38,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:38,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 345 transitions, 5433 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:38,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:38,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:38,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:39,331 INFO L124 PetriNetUnfolderBase]: 1612/2750 cut-off events. [2024-06-27 18:24:39,332 INFO L125 PetriNetUnfolderBase]: For 55802/55802 co-relation queries the response was YES. [2024-06-27 18:24:39,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18836 conditions, 2750 events. 1612/2750 cut-off events. For 55802/55802 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15805 event pairs, 324 based on Foata normal form. 2/2692 useless extension candidates. Maximal degree in co-relation 18735. Up to 2283 conditions per place. [2024-06-27 18:24:39,365 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 268 selfloop transitions, 113 changer transitions 0/387 dead transitions. [2024-06-27 18:24:39,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 387 transitions, 6559 flow [2024-06-27 18:24:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:24:39,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:24:39,367 INFO L175 Difference]: Start difference. First operand has 215 places, 345 transitions, 5433 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:24:39,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 387 transitions, 6559 flow [2024-06-27 18:24:39,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 387 transitions, 6501 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:39,583 INFO L231 Difference]: Finished difference. Result has 220 places, 356 transitions, 5918 flow [2024-06-27 18:24:39,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5918, PETRI_PLACES=220, PETRI_TRANSITIONS=356} [2024-06-27 18:24:39,584 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 180 predicate places. [2024-06-27 18:24:39,584 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 356 transitions, 5918 flow [2024-06-27 18:24:39,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:39,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:39,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:24:39,585 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 18:24:39,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash -194959440, now seen corresponding path program 5 times [2024-06-27 18:24:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104625376] [2024-06-27 18:24:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:40,227 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 18:24:40,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104625376] [2024-06-27 18:24:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104625376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978110532] [2024-06-27 18:24:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:40,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:40,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 356 transitions, 5918 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:40,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:40,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:40,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:41,366 INFO L124 PetriNetUnfolderBase]: 1682/2959 cut-off events. [2024-06-27 18:24:41,367 INFO L125 PetriNetUnfolderBase]: For 62696/62696 co-relation queries the response was YES. [2024-06-27 18:24:41,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20045 conditions, 2959 events. 1682/2959 cut-off events. For 62696/62696 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 17928 event pairs, 331 based on Foata normal form. 2/2868 useless extension candidates. Maximal degree in co-relation 19941. Up to 2240 conditions per place. [2024-06-27 18:24:41,407 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 289 selfloop transitions, 117 changer transitions 0/412 dead transitions. [2024-06-27 18:24:41,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 412 transitions, 7127 flow [2024-06-27 18:24:41,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:24:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:24:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:24:41,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 18:24:41,409 INFO L175 Difference]: Start difference. First operand has 220 places, 356 transitions, 5918 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:24:41,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 412 transitions, 7127 flow [2024-06-27 18:24:41,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 412 transitions, 6900 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:41,656 INFO L231 Difference]: Finished difference. Result has 228 places, 369 transitions, 6246 flow [2024-06-27 18:24:41,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6246, PETRI_PLACES=228, PETRI_TRANSITIONS=369} [2024-06-27 18:24:41,657 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 188 predicate places. [2024-06-27 18:24:41,657 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 369 transitions, 6246 flow [2024-06-27 18:24:41,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:41,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:41,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:41,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:24:41,658 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 18:24:41,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1468790452, now seen corresponding path program 6 times [2024-06-27 18:24:41,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:41,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378095634] [2024-06-27 18:24:41,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:41,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:42,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378095634] [2024-06-27 18:24:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378095634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:42,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:42,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977545500] [2024-06-27 18:24:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:42,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:42,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:42,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:42,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 369 transitions, 6246 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:42,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:42,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:42,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:43,451 INFO L124 PetriNetUnfolderBase]: 1708/2913 cut-off events. [2024-06-27 18:24:43,452 INFO L125 PetriNetUnfolderBase]: For 66713/66713 co-relation queries the response was YES. [2024-06-27 18:24:43,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20645 conditions, 2913 events. 1708/2913 cut-off events. For 66713/66713 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17080 event pairs, 295 based on Foata normal form. 2/2852 useless extension candidates. Maximal degree in co-relation 20537. Up to 2189 conditions per place. [2024-06-27 18:24:43,494 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 281 selfloop transitions, 122 changer transitions 0/409 dead transitions. [2024-06-27 18:24:43,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 409 transitions, 7300 flow [2024-06-27 18:24:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:24:43,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 18:24:43,495 INFO L175 Difference]: Start difference. First operand has 228 places, 369 transitions, 6246 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:24:43,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 409 transitions, 7300 flow [2024-06-27 18:24:43,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 409 transitions, 7064 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:43,750 INFO L231 Difference]: Finished difference. Result has 232 places, 372 transitions, 6376 flow [2024-06-27 18:24:43,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6376, PETRI_PLACES=232, PETRI_TRANSITIONS=372} [2024-06-27 18:24:43,751 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 192 predicate places. [2024-06-27 18:24:43,751 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 372 transitions, 6376 flow [2024-06-27 18:24:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:43,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:43,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:43,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:24:43,752 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 18:24:43,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1352403742, now seen corresponding path program 7 times [2024-06-27 18:24:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947340161] [2024-06-27 18:24:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:44,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:44,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:44,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947340161] [2024-06-27 18:24:44,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947340161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:44,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:44,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:44,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679708492] [2024-06-27 18:24:44,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:44,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:44,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:44,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:44,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:44,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:44,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 372 transitions, 6376 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:44,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:44,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:44,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:45,415 INFO L124 PetriNetUnfolderBase]: 1824/3098 cut-off events. [2024-06-27 18:24:45,416 INFO L125 PetriNetUnfolderBase]: For 79751/79751 co-relation queries the response was YES. [2024-06-27 18:24:45,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22577 conditions, 3098 events. 1824/3098 cut-off events. For 79751/79751 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18366 event pairs, 432 based on Foata normal form. 2/3037 useless extension candidates. Maximal degree in co-relation 22468. Up to 2460 conditions per place. [2024-06-27 18:24:45,460 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 351 selfloop transitions, 63 changer transitions 0/420 dead transitions. [2024-06-27 18:24:45,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 420 transitions, 7855 flow [2024-06-27 18:24:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:24:45,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:24:45,461 INFO L175 Difference]: Start difference. First operand has 232 places, 372 transitions, 6376 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:24:45,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 420 transitions, 7855 flow [2024-06-27 18:24:45,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 420 transitions, 7575 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:45,765 INFO L231 Difference]: Finished difference. Result has 235 places, 382 transitions, 6558 flow [2024-06-27 18:24:45,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6558, PETRI_PLACES=235, PETRI_TRANSITIONS=382} [2024-06-27 18:24:45,766 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-27 18:24:45,766 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 382 transitions, 6558 flow [2024-06-27 18:24:45,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:45,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:45,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:45,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:24:45,767 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 18:24:45,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:45,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1352396302, now seen corresponding path program 8 times [2024-06-27 18:24:45,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:45,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352878692] [2024-06-27 18:24:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:45,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:46,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:46,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:46,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352878692] [2024-06-27 18:24:46,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352878692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:46,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:46,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:46,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90285758] [2024-06-27 18:24:46,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:46,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:46,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:46,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:46,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:46,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 382 transitions, 6558 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:46,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:46,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:46,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:47,397 INFO L124 PetriNetUnfolderBase]: 1816/3083 cut-off events. [2024-06-27 18:24:47,397 INFO L125 PetriNetUnfolderBase]: For 78984/78984 co-relation queries the response was YES. [2024-06-27 18:24:47,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22360 conditions, 3083 events. 1816/3083 cut-off events. For 78984/78984 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 18232 event pairs, 431 based on Foata normal form. 4/3025 useless extension candidates. Maximal degree in co-relation 22250. Up to 2456 conditions per place. [2024-06-27 18:24:47,445 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 352 selfloop transitions, 61 changer transitions 0/419 dead transitions. [2024-06-27 18:24:47,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 419 transitions, 7643 flow [2024-06-27 18:24:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:47,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:24:47,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 18:24:47,447 INFO L175 Difference]: Start difference. First operand has 235 places, 382 transitions, 6558 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:24:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 419 transitions, 7643 flow [2024-06-27 18:24:47,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 419 transitions, 7400 flow, removed 105 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:47,814 INFO L231 Difference]: Finished difference. Result has 239 places, 382 transitions, 6453 flow [2024-06-27 18:24:47,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6453, PETRI_PLACES=239, PETRI_TRANSITIONS=382} [2024-06-27 18:24:47,815 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 199 predicate places. [2024-06-27 18:24:47,815 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 382 transitions, 6453 flow [2024-06-27 18:24:47,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:47,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:47,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:47,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:24:47,816 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 18:24:47,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1125206220, now seen corresponding path program 6 times [2024-06-27 18:24:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683614533] [2024-06-27 18:24:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683614533] [2024-06-27 18:24:48,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683614533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:48,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:48,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:48,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392647105] [2024-06-27 18:24:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:48,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:48,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:48,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:48,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:48,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 382 transitions, 6453 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:48,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:48,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:48,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:49,740 INFO L124 PetriNetUnfolderBase]: 1860/3145 cut-off events. [2024-06-27 18:24:49,741 INFO L125 PetriNetUnfolderBase]: For 73321/73321 co-relation queries the response was YES. [2024-06-27 18:24:49,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22535 conditions, 3145 events. 1860/3145 cut-off events. For 73321/73321 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 18502 event pairs, 402 based on Foata normal form. 2/3081 useless extension candidates. Maximal degree in co-relation 22424. Up to 2687 conditions per place. [2024-06-27 18:24:49,787 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 316 selfloop transitions, 105 changer transitions 0/427 dead transitions. [2024-06-27 18:24:49,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 427 transitions, 7775 flow [2024-06-27 18:24:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:49,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:24:49,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:24:49,789 INFO L175 Difference]: Start difference. First operand has 239 places, 382 transitions, 6453 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:24:49,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 427 transitions, 7775 flow [2024-06-27 18:24:50,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 427 transitions, 7653 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:24:50,102 INFO L231 Difference]: Finished difference. Result has 242 places, 394 transitions, 6891 flow [2024-06-27 18:24:50,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6337, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6891, PETRI_PLACES=242, PETRI_TRANSITIONS=394} [2024-06-27 18:24:50,103 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 202 predicate places. [2024-06-27 18:24:50,103 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 394 transitions, 6891 flow [2024-06-27 18:24:50,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:50,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:50,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:50,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:24:50,104 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 18:24:50,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1352605552, now seen corresponding path program 9 times [2024-06-27 18:24:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:50,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834368196] [2024-06-27 18:24:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:50,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:50,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:50,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834368196] [2024-06-27 18:24:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834368196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:50,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371244513] [2024-06-27 18:24:50,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:50,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:50,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:50,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:50,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:50,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 394 transitions, 6891 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:50,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:50,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:50,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:52,124 INFO L124 PetriNetUnfolderBase]: 2017/3441 cut-off events. [2024-06-27 18:24:52,124 INFO L125 PetriNetUnfolderBase]: For 94271/94271 co-relation queries the response was YES. [2024-06-27 18:24:52,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25262 conditions, 3441 events. 2017/3441 cut-off events. For 94271/94271 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20879 event pairs, 345 based on Foata normal form. 4/3365 useless extension candidates. Maximal degree in co-relation 25149. Up to 1636 conditions per place. [2024-06-27 18:24:52,171 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 291 selfloop transitions, 151 changer transitions 0/448 dead transitions. [2024-06-27 18:24:52,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 448 transitions, 8428 flow [2024-06-27 18:24:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 18:24:52,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 18:24:52,173 INFO L175 Difference]: Start difference. First operand has 242 places, 394 transitions, 6891 flow. Second operand 9 states and 166 transitions. [2024-06-27 18:24:52,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 448 transitions, 8428 flow [2024-06-27 18:24:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 448 transitions, 8134 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 18:24:52,598 INFO L231 Difference]: Finished difference. Result has 247 places, 403 transitions, 7285 flow [2024-06-27 18:24:52,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6597, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7285, PETRI_PLACES=247, PETRI_TRANSITIONS=403} [2024-06-27 18:24:52,599 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 207 predicate places. [2024-06-27 18:24:52,599 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 403 transitions, 7285 flow [2024-06-27 18:24:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:52,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:52,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:52,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:24:52,602 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 18:24:52,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1159051538, now seen corresponding path program 10 times [2024-06-27 18:24:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:52,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330371076] [2024-06-27 18:24:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:52,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:53,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330371076] [2024-06-27 18:24:53,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330371076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:53,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:53,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521773542] [2024-06-27 18:24:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:53,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:53,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:53,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:53,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 403 transitions, 7285 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:53,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:53,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:53,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:54,575 INFO L124 PetriNetUnfolderBase]: 2129/3702 cut-off events. [2024-06-27 18:24:54,575 INFO L125 PetriNetUnfolderBase]: For 110960/110960 co-relation queries the response was YES. [2024-06-27 18:24:54,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28143 conditions, 3702 events. 2129/3702 cut-off events. For 110960/110960 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23421 event pairs, 495 based on Foata normal form. 4/3599 useless extension candidates. Maximal degree in co-relation 28027. Up to 3099 conditions per place. [2024-06-27 18:24:54,628 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 397 selfloop transitions, 48 changer transitions 0/451 dead transitions. [2024-06-27 18:24:54,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 451 transitions, 8723 flow [2024-06-27 18:24:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:54,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:24:54,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:24:54,629 INFO L175 Difference]: Start difference. First operand has 247 places, 403 transitions, 7285 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:24:54,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 451 transitions, 8723 flow [2024-06-27 18:24:55,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 451 transitions, 8569 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 18:24:55,133 INFO L231 Difference]: Finished difference. Result has 252 places, 410 transitions, 7475 flow [2024-06-27 18:24:55,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7131, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7475, PETRI_PLACES=252, PETRI_TRANSITIONS=410} [2024-06-27 18:24:55,134 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2024-06-27 18:24:55,134 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 410 transitions, 7475 flow [2024-06-27 18:24:55,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:55,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:55,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:55,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:24:55,135 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 18:24:55,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:55,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1377846, now seen corresponding path program 11 times [2024-06-27 18:24:55,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:55,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929658448] [2024-06-27 18:24:55,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:55,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:55,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:55,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929658448] [2024-06-27 18:24:55,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929658448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:55,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:55,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:55,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241689569] [2024-06-27 18:24:55,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:55,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:55,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:55,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:55,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:55,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:55,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 410 transitions, 7475 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:55,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:55,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:55,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:57,193 INFO L124 PetriNetUnfolderBase]: 2125/3687 cut-off events. [2024-06-27 18:24:57,194 INFO L125 PetriNetUnfolderBase]: For 106630/106630 co-relation queries the response was YES. [2024-06-27 18:24:57,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28131 conditions, 3687 events. 2125/3687 cut-off events. For 106630/106630 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23225 event pairs, 498 based on Foata normal form. 2/3585 useless extension candidates. Maximal degree in co-relation 28013. Up to 3098 conditions per place. [2024-06-27 18:24:57,253 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 396 selfloop transitions, 51 changer transitions 0/453 dead transitions. [2024-06-27 18:24:57,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 453 transitions, 8789 flow [2024-06-27 18:24:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:24:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:24:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:24:57,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:24:57,255 INFO L175 Difference]: Start difference. First operand has 252 places, 410 transitions, 7475 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:24:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 453 transitions, 8789 flow [2024-06-27 18:24:57,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 453 transitions, 8598 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 18:24:57,731 INFO L231 Difference]: Finished difference. Result has 256 places, 413 transitions, 7512 flow [2024-06-27 18:24:57,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7298, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7512, PETRI_PLACES=256, PETRI_TRANSITIONS=413} [2024-06-27 18:24:57,732 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 216 predicate places. [2024-06-27 18:24:57,732 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 413 transitions, 7512 flow [2024-06-27 18:24:57,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:57,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:57,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:24:57,733 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 18:24:57,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1585608, now seen corresponding path program 7 times [2024-06-27 18:24:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:57,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010691802] [2024-06-27 18:24:57,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:57,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:58,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010691802] [2024-06-27 18:24:58,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010691802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:58,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:24:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656289065] [2024-06-27 18:24:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:58,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:24:58,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:24:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:24:58,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:24:58,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 413 transitions, 7512 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:58,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:58,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:24:58,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:59,807 INFO L124 PetriNetUnfolderBase]: 2125/3604 cut-off events. [2024-06-27 18:24:59,807 INFO L125 PetriNetUnfolderBase]: For 101429/101429 co-relation queries the response was YES. [2024-06-27 18:24:59,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27743 conditions, 3604 events. 2125/3604 cut-off events. For 101429/101429 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21996 event pairs, 289 based on Foata normal form. 2/3524 useless extension candidates. Maximal degree in co-relation 27623. Up to 2971 conditions per place. [2024-06-27 18:24:59,865 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 299 selfloop transitions, 135 changer transitions 0/440 dead transitions. [2024-06-27 18:24:59,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 440 transitions, 8596 flow [2024-06-27 18:24:59,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:24:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:24:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:24:59,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-27 18:24:59,867 INFO L175 Difference]: Start difference. First operand has 256 places, 413 transitions, 7512 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:24:59,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 440 transitions, 8596 flow [2024-06-27 18:25:00,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 440 transitions, 8412 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:00,377 INFO L231 Difference]: Finished difference. Result has 258 places, 415 transitions, 7699 flow [2024-06-27 18:25:00,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7699, PETRI_PLACES=258, PETRI_TRANSITIONS=415} [2024-06-27 18:25:00,378 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 218 predicate places. [2024-06-27 18:25:00,378 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 415 transitions, 7699 flow [2024-06-27 18:25:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:00,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:00,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:25:00,379 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 18:25:00,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1579656, now seen corresponding path program 12 times [2024-06-27 18:25:00,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:00,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101629680] [2024-06-27 18:25:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:00,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:01,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:01,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101629680] [2024-06-27 18:25:01,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101629680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:01,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:01,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047484458] [2024-06-27 18:25:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:01,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:01,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 415 transitions, 7699 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:01,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:01,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:01,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:02,395 INFO L124 PetriNetUnfolderBase]: 2151/3680 cut-off events. [2024-06-27 18:25:02,396 INFO L125 PetriNetUnfolderBase]: For 107117/107117 co-relation queries the response was YES. [2024-06-27 18:25:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28235 conditions, 3680 events. 2151/3680 cut-off events. For 107117/107117 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22692 event pairs, 245 based on Foata normal form. 2/3588 useless extension candidates. Maximal degree in co-relation 28114. Up to 2792 conditions per place. [2024-06-27 18:25:02,456 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 302 selfloop transitions, 146 changer transitions 0/454 dead transitions. [2024-06-27 18:25:02,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 454 transitions, 8885 flow [2024-06-27 18:25:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:02,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:25:02,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:25:02,458 INFO L175 Difference]: Start difference. First operand has 258 places, 415 transitions, 7699 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:25:02,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 454 transitions, 8885 flow [2024-06-27 18:25:02,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 454 transitions, 8530 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:02,979 INFO L231 Difference]: Finished difference. Result has 261 places, 418 transitions, 7770 flow [2024-06-27 18:25:02,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7344, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7770, PETRI_PLACES=261, PETRI_TRANSITIONS=418} [2024-06-27 18:25:02,980 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 221 predicate places. [2024-06-27 18:25:02,981 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 418 transitions, 7770 flow [2024-06-27 18:25:02,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:02,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:02,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:02,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:25:02,981 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 18:25:02,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:02,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1151909138, now seen corresponding path program 13 times [2024-06-27 18:25:02,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:02,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241302958] [2024-06-27 18:25:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:02,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:03,637 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 18:25:03,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:03,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241302958] [2024-06-27 18:25:03,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241302958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:03,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:03,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368483165] [2024-06-27 18:25:03,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:03,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:03,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:03,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:03,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:03,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:03,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 418 transitions, 7770 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:03,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:03,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:03,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:05,004 INFO L124 PetriNetUnfolderBase]: 2252/3811 cut-off events. [2024-06-27 18:25:05,004 INFO L125 PetriNetUnfolderBase]: For 123864/123864 co-relation queries the response was YES. [2024-06-27 18:25:05,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30101 conditions, 3811 events. 2252/3811 cut-off events. For 123864/123864 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23510 event pairs, 482 based on Foata normal form. 2/3733 useless extension candidates. Maximal degree in co-relation 29979. Up to 2651 conditions per place. [2024-06-27 18:25:05,069 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 367 selfloop transitions, 98 changer transitions 0/471 dead transitions. [2024-06-27 18:25:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 471 transitions, 9595 flow [2024-06-27 18:25:05,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:25:05,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-27 18:25:05,070 INFO L175 Difference]: Start difference. First operand has 261 places, 418 transitions, 7770 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:25:05,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 471 transitions, 9595 flow [2024-06-27 18:25:05,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 471 transitions, 9191 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:05,623 INFO L231 Difference]: Finished difference. Result has 264 places, 429 transitions, 8005 flow [2024-06-27 18:25:05,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7366, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8005, PETRI_PLACES=264, PETRI_TRANSITIONS=429} [2024-06-27 18:25:05,624 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-27 18:25:05,624 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 429 transitions, 8005 flow [2024-06-27 18:25:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:05,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:05,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:25:05,625 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 18:25:05,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash 255130104, now seen corresponding path program 14 times [2024-06-27 18:25:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:05,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602322269] [2024-06-27 18:25:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:06,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:06,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602322269] [2024-06-27 18:25:06,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602322269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:06,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:06,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842398975] [2024-06-27 18:25:06,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:06,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:06,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:06,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:06,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:06,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 429 transitions, 8005 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:06,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:06,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:06,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:07,667 INFO L124 PetriNetUnfolderBase]: 2351/3964 cut-off events. [2024-06-27 18:25:07,667 INFO L125 PetriNetUnfolderBase]: For 139199/139199 co-relation queries the response was YES. [2024-06-27 18:25:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31961 conditions, 3964 events. 2351/3964 cut-off events. For 139199/139199 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 24482 event pairs, 492 based on Foata normal form. 4/3888 useless extension candidates. Maximal degree in co-relation 31837. Up to 2721 conditions per place. [2024-06-27 18:25:07,727 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 369 selfloop transitions, 104 changer transitions 0/479 dead transitions. [2024-06-27 18:25:07,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 479 transitions, 9745 flow [2024-06-27 18:25:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:25:07,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:25:07,732 INFO L175 Difference]: Start difference. First operand has 264 places, 429 transitions, 8005 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:25:07,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 479 transitions, 9745 flow [2024-06-27 18:25:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 479 transitions, 9353 flow, removed 132 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:08,272 INFO L231 Difference]: Finished difference. Result has 270 places, 437 transitions, 8149 flow [2024-06-27 18:25:08,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7681, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8149, PETRI_PLACES=270, PETRI_TRANSITIONS=437} [2024-06-27 18:25:08,273 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-27 18:25:08,273 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 437 transitions, 8149 flow [2024-06-27 18:25:08,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:08,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:08,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:08,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:25:08,274 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 18:25:08,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -143076731, now seen corresponding path program 1 times [2024-06-27 18:25:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530000173] [2024-06-27 18:25:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:09,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530000173] [2024-06-27 18:25:09,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530000173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:09,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:09,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:09,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039210719] [2024-06-27 18:25:09,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:09,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:09,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:09,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:09,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 437 transitions, 8149 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:25:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:10,334 INFO L124 PetriNetUnfolderBase]: 2347/4065 cut-off events. [2024-06-27 18:25:10,335 INFO L125 PetriNetUnfolderBase]: For 127343/127343 co-relation queries the response was YES. [2024-06-27 18:25:10,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31320 conditions, 4065 events. 2347/4065 cut-off events. For 127343/127343 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25821 event pairs, 544 based on Foata normal form. 1/3950 useless extension candidates. Maximal degree in co-relation 31194. Up to 3412 conditions per place. [2024-06-27 18:25:10,407 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 396 selfloop transitions, 70 changer transitions 0/472 dead transitions. [2024-06-27 18:25:10,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 472 transitions, 9498 flow [2024-06-27 18:25:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:25:10,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 18:25:10,408 INFO L175 Difference]: Start difference. First operand has 270 places, 437 transitions, 8149 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:25:10,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 472 transitions, 9498 flow [2024-06-27 18:25:11,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 472 transitions, 9222 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:11,301 INFO L231 Difference]: Finished difference. Result has 274 places, 441 transitions, 8194 flow [2024-06-27 18:25:11,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7877, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8194, PETRI_PLACES=274, PETRI_TRANSITIONS=441} [2024-06-27 18:25:11,302 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 234 predicate places. [2024-06-27 18:25:11,302 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 441 transitions, 8194 flow [2024-06-27 18:25:11,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:25:11,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:11,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:25:11,303 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 18:25:11,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -133880240, now seen corresponding path program 15 times [2024-06-27 18:25:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979327913] [2024-06-27 18:25:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979327913] [2024-06-27 18:25:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979327913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:11,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:11,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818663857] [2024-06-27 18:25:11,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:11,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:11,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:11,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:12,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:12,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 441 transitions, 8194 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:12,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:12,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:13,330 INFO L124 PetriNetUnfolderBase]: 2341/3973 cut-off events. [2024-06-27 18:25:13,330 INFO L125 PetriNetUnfolderBase]: For 125390/125390 co-relation queries the response was YES. [2024-06-27 18:25:13,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30477 conditions, 3973 events. 2341/3973 cut-off events. For 125390/125390 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 24650 event pairs, 721 based on Foata normal form. 4/3890 useless extension candidates. Maximal degree in co-relation 30348. Up to 3523 conditions per place. [2024-06-27 18:25:13,403 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 439 selfloop transitions, 30 changer transitions 0/475 dead transitions. [2024-06-27 18:25:13,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 475 transitions, 9383 flow [2024-06-27 18:25:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:13,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:25:13,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:25:13,405 INFO L175 Difference]: Start difference. First operand has 274 places, 441 transitions, 8194 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:25:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 475 transitions, 9383 flow [2024-06-27 18:25:14,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 475 transitions, 9071 flow, removed 86 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:14,138 INFO L231 Difference]: Finished difference. Result has 276 places, 441 transitions, 7952 flow [2024-06-27 18:25:14,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7884, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7952, PETRI_PLACES=276, PETRI_TRANSITIONS=441} [2024-06-27 18:25:14,139 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 236 predicate places. [2024-06-27 18:25:14,139 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 441 transitions, 7952 flow [2024-06-27 18:25:14,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:14,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:14,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:14,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:25:14,140 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 18:25:14,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash -333203347, now seen corresponding path program 2 times [2024-06-27 18:25:14,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:14,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957552385] [2024-06-27 18:25:14,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:14,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957552385] [2024-06-27 18:25:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957552385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:14,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:14,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999934929] [2024-06-27 18:25:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:14,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:14,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:15,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:15,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 441 transitions, 7952 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:25:15,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:15,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:15,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:16,238 INFO L124 PetriNetUnfolderBase]: 2337/3979 cut-off events. [2024-06-27 18:25:16,238 INFO L125 PetriNetUnfolderBase]: For 117647/117647 co-relation queries the response was YES. [2024-06-27 18:25:16,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29779 conditions, 3979 events. 2337/3979 cut-off events. For 117647/117647 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24739 event pairs, 733 based on Foata normal form. 1/3889 useless extension candidates. Maximal degree in co-relation 29651. Up to 3601 conditions per place. [2024-06-27 18:25:16,304 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 438 selfloop transitions, 23 changer transitions 0/467 dead transitions. [2024-06-27 18:25:16,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 467 transitions, 8995 flow [2024-06-27 18:25:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:25:16,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:25:16,306 INFO L175 Difference]: Start difference. First operand has 276 places, 441 transitions, 7952 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:25:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 467 transitions, 8995 flow [2024-06-27 18:25:16,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 467 transitions, 8841 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:16,921 INFO L231 Difference]: Finished difference. Result has 276 places, 441 transitions, 7853 flow [2024-06-27 18:25:16,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7798, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7853, PETRI_PLACES=276, PETRI_TRANSITIONS=441} [2024-06-27 18:25:16,922 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 236 predicate places. [2024-06-27 18:25:16,922 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 441 transitions, 7853 flow [2024-06-27 18:25:16,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:25:16,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:16,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:16,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:25:16,923 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:16,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206592, now seen corresponding path program 1 times [2024-06-27 18:25:16,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:16,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394661020] [2024-06-27 18:25:16,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:16,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:16,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394661020] [2024-06-27 18:25:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394661020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:16,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:25:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447470797] [2024-06-27 18:25:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:25:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:25:16,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:25:16,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-27 18:25:17,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 441 transitions, 7853 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:17,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:17,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-27 18:25:17,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:17,500 INFO L124 PetriNetUnfolderBase]: 1010/1882 cut-off events. [2024-06-27 18:25:17,500 INFO L125 PetriNetUnfolderBase]: For 66944/67047 co-relation queries the response was YES. [2024-06-27 18:25:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14183 conditions, 1882 events. 1010/1882 cut-off events. For 66944/67047 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11270 event pairs, 249 based on Foata normal form. 176/1984 useless extension candidates. Maximal degree in co-relation 14055. Up to 614 conditions per place. [2024-06-27 18:25:17,528 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 132 selfloop transitions, 79 changer transitions 0/273 dead transitions. [2024-06-27 18:25:17,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 273 transitions, 5003 flow [2024-06-27 18:25:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:25:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:25:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:25:17,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:25:17,530 INFO L175 Difference]: Start difference. First operand has 276 places, 441 transitions, 7853 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:25:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 273 transitions, 5003 flow [2024-06-27 18:25:17,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 273 transitions, 4001 flow, removed 10 selfloop flow, removed 56 redundant places. [2024-06-27 18:25:17,880 INFO L231 Difference]: Finished difference. Result has 225 places, 250 transitions, 3701 flow [2024-06-27 18:25:17,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3701, PETRI_PLACES=225, PETRI_TRANSITIONS=250} [2024-06-27 18:25:17,881 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 185 predicate places. [2024-06-27 18:25:17,881 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 250 transitions, 3701 flow [2024-06-27 18:25:17,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:17,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:17,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:25:17,882 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 18:25:17,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -527745027, now seen corresponding path program 1 times [2024-06-27 18:25:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:17,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522324152] [2024-06-27 18:25:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:18,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:18,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522324152] [2024-06-27 18:25:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522324152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:18,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:18,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837938404] [2024-06-27 18:25:18,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:18,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:18,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:18,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 250 transitions, 3701 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:18,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:18,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:18,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:19,656 INFO L124 PetriNetUnfolderBase]: 1204/2080 cut-off events. [2024-06-27 18:25:19,657 INFO L125 PetriNetUnfolderBase]: For 61939/61939 co-relation queries the response was YES. [2024-06-27 18:25:19,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14743 conditions, 2080 events. 1204/2080 cut-off events. For 61939/61939 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11049 event pairs, 225 based on Foata normal form. 2/1948 useless extension candidates. Maximal degree in co-relation 14636. Up to 1820 conditions per place. [2024-06-27 18:25:19,684 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 238 selfloop transitions, 41 changer transitions 0/286 dead transitions. [2024-06-27 18:25:19,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 286 transitions, 4499 flow [2024-06-27 18:25:19,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:19,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:25:19,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:25:19,686 INFO L175 Difference]: Start difference. First operand has 225 places, 250 transitions, 3701 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:25:19,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 286 transitions, 4499 flow [2024-06-27 18:25:19,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 286 transitions, 4473 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:19,980 INFO L231 Difference]: Finished difference. Result has 234 places, 256 transitions, 3911 flow [2024-06-27 18:25:19,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3675, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3911, PETRI_PLACES=234, PETRI_TRANSITIONS=256} [2024-06-27 18:25:19,981 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 194 predicate places. [2024-06-27 18:25:19,981 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 256 transitions, 3911 flow [2024-06-27 18:25:19,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:19,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:19,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:25:19,981 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 18:25:19,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 696939239, now seen corresponding path program 2 times [2024-06-27 18:25:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098257337] [2024-06-27 18:25:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:20,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:20,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098257337] [2024-06-27 18:25:20,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098257337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:20,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:20,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:20,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476556134] [2024-06-27 18:25:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:20,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:20,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:20,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 256 transitions, 3911 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:20,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:20,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:20,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:21,841 INFO L124 PetriNetUnfolderBase]: 1293/2264 cut-off events. [2024-06-27 18:25:21,841 INFO L125 PetriNetUnfolderBase]: For 68463/68463 co-relation queries the response was YES. [2024-06-27 18:25:21,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16018 conditions, 2264 events. 1293/2264 cut-off events. For 68463/68463 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12546 event pairs, 308 based on Foata normal form. 2/2126 useless extension candidates. Maximal degree in co-relation 15907. Up to 1934 conditions per place. [2024-06-27 18:25:21,879 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 244 selfloop transitions, 49 changer transitions 0/300 dead transitions. [2024-06-27 18:25:21,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 300 transitions, 4906 flow [2024-06-27 18:25:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:25:21,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:25:21,881 INFO L175 Difference]: Start difference. First operand has 234 places, 256 transitions, 3911 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:25:21,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 300 transitions, 4906 flow [2024-06-27 18:25:22,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 300 transitions, 4625 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:22,306 INFO L231 Difference]: Finished difference. Result has 240 places, 268 transitions, 4064 flow [2024-06-27 18:25:22,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3737, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4064, PETRI_PLACES=240, PETRI_TRANSITIONS=268} [2024-06-27 18:25:22,306 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 200 predicate places. [2024-06-27 18:25:22,307 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 268 transitions, 4064 flow [2024-06-27 18:25:22,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:22,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:22,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:22,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:25:22,307 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 18:25:22,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2110970167, now seen corresponding path program 3 times [2024-06-27 18:25:22,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:22,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372421950] [2024-06-27 18:25:22,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:22,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372421950] [2024-06-27 18:25:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372421950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40857384] [2024-06-27 18:25:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:23,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:23,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 268 transitions, 4064 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:23,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:23,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:23,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:24,144 INFO L124 PetriNetUnfolderBase]: 1408/2490 cut-off events. [2024-06-27 18:25:24,145 INFO L125 PetriNetUnfolderBase]: For 72112/72112 co-relation queries the response was YES. [2024-06-27 18:25:24,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17109 conditions, 2490 events. 1408/2490 cut-off events. For 72112/72112 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14323 event pairs, 225 based on Foata normal form. 2/2344 useless extension candidates. Maximal degree in co-relation 16995. Up to 2040 conditions per place. [2024-06-27 18:25:24,178 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 254 selfloop transitions, 59 changer transitions 0/320 dead transitions. [2024-06-27 18:25:24,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 320 transitions, 5187 flow [2024-06-27 18:25:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:24,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:25:24,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:25:24,180 INFO L175 Difference]: Start difference. First operand has 240 places, 268 transitions, 4064 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:25:24,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 320 transitions, 5187 flow [2024-06-27 18:25:24,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 320 transitions, 4899 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:24,577 INFO L231 Difference]: Finished difference. Result has 246 places, 287 transitions, 4333 flow [2024-06-27 18:25:24,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4333, PETRI_PLACES=246, PETRI_TRANSITIONS=287} [2024-06-27 18:25:24,578 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 206 predicate places. [2024-06-27 18:25:24,578 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 287 transitions, 4333 flow [2024-06-27 18:25:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:24,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:24,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:25:24,579 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 18:25:24,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1015222439, now seen corresponding path program 4 times [2024-06-27 18:25:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435066833] [2024-06-27 18:25:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:25,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:25,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435066833] [2024-06-27 18:25:25,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435066833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414426062] [2024-06-27 18:25:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:25,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 287 transitions, 4333 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:26,484 INFO L124 PetriNetUnfolderBase]: 1432/2542 cut-off events. [2024-06-27 18:25:26,484 INFO L125 PetriNetUnfolderBase]: For 73771/73771 co-relation queries the response was YES. [2024-06-27 18:25:26,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 2542 events. 1432/2542 cut-off events. For 73771/73771 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14783 event pairs, 392 based on Foata normal form. 2/2393 useless extension candidates. Maximal degree in co-relation 17525. Up to 2188 conditions per place. [2024-06-27 18:25:26,519 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 257 selfloop transitions, 55 changer transitions 0/319 dead transitions. [2024-06-27 18:25:26,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 319 transitions, 5207 flow [2024-06-27 18:25:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:26,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:25:26,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 18:25:26,521 INFO L175 Difference]: Start difference. First operand has 246 places, 287 transitions, 4333 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:25:26,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 319 transitions, 5207 flow [2024-06-27 18:25:26,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 319 transitions, 4998 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:26,925 INFO L231 Difference]: Finished difference. Result has 250 places, 290 transitions, 4388 flow [2024-06-27 18:25:26,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4124, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4388, PETRI_PLACES=250, PETRI_TRANSITIONS=290} [2024-06-27 18:25:26,926 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2024-06-27 18:25:26,926 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 290 transitions, 4388 flow [2024-06-27 18:25:26,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:26,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:26,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:25:26,927 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 18:25:26,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1015630709, now seen corresponding path program 5 times [2024-06-27 18:25:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130196560] [2024-06-27 18:25:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:27,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:27,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130196560] [2024-06-27 18:25:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130196560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:27,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006577633] [2024-06-27 18:25:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:27,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:27,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:27,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:27,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 290 transitions, 4388 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:27,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:27,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:27,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:28,814 INFO L124 PetriNetUnfolderBase]: 1454/2580 cut-off events. [2024-06-27 18:25:28,815 INFO L125 PetriNetUnfolderBase]: For 76998/76998 co-relation queries the response was YES. [2024-06-27 18:25:28,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17850 conditions, 2580 events. 1454/2580 cut-off events. For 76998/76998 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15020 event pairs, 410 based on Foata normal form. 2/2430 useless extension candidates. Maximal degree in co-relation 17732. Up to 2282 conditions per place. [2024-06-27 18:25:28,852 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 255 selfloop transitions, 57 changer transitions 0/319 dead transitions. [2024-06-27 18:25:28,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 319 transitions, 5233 flow [2024-06-27 18:25:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:25:28,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:25:28,854 INFO L175 Difference]: Start difference. First operand has 250 places, 290 transitions, 4388 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:25:28,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 319 transitions, 5233 flow [2024-06-27 18:25:29,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 319 transitions, 5021 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:29,304 INFO L231 Difference]: Finished difference. Result has 254 places, 294 transitions, 4432 flow [2024-06-27 18:25:29,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4176, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4432, PETRI_PLACES=254, PETRI_TRANSITIONS=294} [2024-06-27 18:25:29,305 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 214 predicate places. [2024-06-27 18:25:29,305 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 294 transitions, 4432 flow [2024-06-27 18:25:29,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:29,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:29,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:29,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:25:29,306 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 18:25:29,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:29,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1015644845, now seen corresponding path program 1 times [2024-06-27 18:25:29,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:29,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620974950] [2024-06-27 18:25:29,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:29,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620974950] [2024-06-27 18:25:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620974950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:30,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:30,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:30,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176755877] [2024-06-27 18:25:30,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:30,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:30,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:30,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:30,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:30,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 294 transitions, 4432 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:30,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:31,176 INFO L124 PetriNetUnfolderBase]: 1460/2589 cut-off events. [2024-06-27 18:25:31,176 INFO L125 PetriNetUnfolderBase]: For 77038/77038 co-relation queries the response was YES. [2024-06-27 18:25:31,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17826 conditions, 2589 events. 1460/2589 cut-off events. For 77038/77038 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15090 event pairs, 406 based on Foata normal form. 1/2438 useless extension candidates. Maximal degree in co-relation 17706. Up to 2294 conditions per place. [2024-06-27 18:25:31,212 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 251 selfloop transitions, 61 changer transitions 0/319 dead transitions. [2024-06-27 18:25:31,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 319 transitions, 5217 flow [2024-06-27 18:25:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:31,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 18:25:31,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 18:25:31,213 INFO L175 Difference]: Start difference. First operand has 254 places, 294 transitions, 4432 flow. Second operand 10 states and 148 transitions. [2024-06-27 18:25:31,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 319 transitions, 5217 flow [2024-06-27 18:25:31,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 319 transitions, 5028 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:31,629 INFO L231 Difference]: Finished difference. Result has 257 places, 296 transitions, 4445 flow [2024-06-27 18:25:31,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4445, PETRI_PLACES=257, PETRI_TRANSITIONS=296} [2024-06-27 18:25:31,630 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-27 18:25:31,630 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 296 transitions, 4445 flow [2024-06-27 18:25:31,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:31,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:31,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:31,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:25:31,631 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 18:25:31,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 248907963, now seen corresponding path program 1 times [2024-06-27 18:25:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:31,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404098781] [2024-06-27 18:25:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:32,505 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 18:25:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:32,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404098781] [2024-06-27 18:25:32,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404098781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:32,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:32,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:32,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075897457] [2024-06-27 18:25:32,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:32,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:32,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:32,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:32,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 296 transitions, 4445 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:32,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:32,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:33,424 INFO L124 PetriNetUnfolderBase]: 1473/2602 cut-off events. [2024-06-27 18:25:33,425 INFO L125 PetriNetUnfolderBase]: For 77648/77648 co-relation queries the response was YES. [2024-06-27 18:25:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17920 conditions, 2602 events. 1473/2602 cut-off events. For 77648/77648 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15078 event pairs, 373 based on Foata normal form. 2/2447 useless extension candidates. Maximal degree in co-relation 17799. Up to 2317 conditions per place. [2024-06-27 18:25:33,461 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 263 selfloop transitions, 54 changer transitions 0/324 dead transitions. [2024-06-27 18:25:33,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 324 transitions, 5249 flow [2024-06-27 18:25:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:33,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 18:25:33,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-27 18:25:33,463 INFO L175 Difference]: Start difference. First operand has 257 places, 296 transitions, 4445 flow. Second operand 11 states and 160 transitions. [2024-06-27 18:25:33,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 324 transitions, 5249 flow [2024-06-27 18:25:33,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 324 transitions, 5109 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:25:33,899 INFO L231 Difference]: Finished difference. Result has 261 places, 298 transitions, 4483 flow [2024-06-27 18:25:33,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4305, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4483, PETRI_PLACES=261, PETRI_TRANSITIONS=298} [2024-06-27 18:25:33,900 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 221 predicate places. [2024-06-27 18:25:33,900 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 298 transitions, 4483 flow [2024-06-27 18:25:33,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:33,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:33,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:33,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:25:33,900 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 18:25:33,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 837576715, now seen corresponding path program 6 times [2024-06-27 18:25:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437215726] [2024-06-27 18:25:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:34,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:34,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437215726] [2024-06-27 18:25:34,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437215726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:34,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:34,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56192951] [2024-06-27 18:25:34,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:34,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:34,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:34,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:34,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:34,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 298 transitions, 4483 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:34,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:34,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:34,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:35,891 INFO L124 PetriNetUnfolderBase]: 1515/2693 cut-off events. [2024-06-27 18:25:35,891 INFO L125 PetriNetUnfolderBase]: For 82853/82853 co-relation queries the response was YES. [2024-06-27 18:25:35,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18504 conditions, 2693 events. 1515/2693 cut-off events. For 82853/82853 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15870 event pairs, 374 based on Foata normal form. 2/2536 useless extension candidates. Maximal degree in co-relation 18382. Up to 2311 conditions per place. [2024-06-27 18:25:35,928 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 268 selfloop transitions, 56 changer transitions 0/331 dead transitions. [2024-06-27 18:25:35,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 331 transitions, 5401 flow [2024-06-27 18:25:35,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:35,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:25:35,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 18:25:35,930 INFO L175 Difference]: Start difference. First operand has 261 places, 298 transitions, 4483 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:25:35,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 331 transitions, 5401 flow [2024-06-27 18:25:36,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 331 transitions, 5249 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:36,414 INFO L231 Difference]: Finished difference. Result has 263 places, 304 transitions, 4637 flow [2024-06-27 18:25:36,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4637, PETRI_PLACES=263, PETRI_TRANSITIONS=304} [2024-06-27 18:25:36,414 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 223 predicate places. [2024-06-27 18:25:36,415 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 304 transitions, 4637 flow [2024-06-27 18:25:36,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:36,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:36,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:36,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:25:36,415 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 18:25:36,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1143304405, now seen corresponding path program 7 times [2024-06-27 18:25:36,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:36,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335199951] [2024-06-27 18:25:36,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:36,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335199951] [2024-06-27 18:25:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335199951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:37,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:37,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148286648] [2024-06-27 18:25:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:37,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:37,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:37,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 304 transitions, 4637 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:37,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:37,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:37,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:38,502 INFO L124 PetriNetUnfolderBase]: 1549/2753 cut-off events. [2024-06-27 18:25:38,503 INFO L125 PetriNetUnfolderBase]: For 88675/88675 co-relation queries the response was YES. [2024-06-27 18:25:38,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19049 conditions, 2753 events. 1549/2753 cut-off events. For 88675/88675 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16338 event pairs, 400 based on Foata normal form. 2/2591 useless extension candidates. Maximal degree in co-relation 18925. Up to 2436 conditions per place. [2024-06-27 18:25:38,548 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 269 selfloop transitions, 59 changer transitions 0/335 dead transitions. [2024-06-27 18:25:38,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 335 transitions, 5551 flow [2024-06-27 18:25:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:25:38,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-27 18:25:38,550 INFO L175 Difference]: Start difference. First operand has 263 places, 304 transitions, 4637 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:25:38,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 335 transitions, 5551 flow [2024-06-27 18:25:39,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 335 transitions, 5353 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:39,078 INFO L231 Difference]: Finished difference. Result has 268 places, 312 transitions, 4759 flow [2024-06-27 18:25:39,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4439, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4759, PETRI_PLACES=268, PETRI_TRANSITIONS=312} [2024-06-27 18:25:39,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 228 predicate places. [2024-06-27 18:25:39,079 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 312 transitions, 4759 flow [2024-06-27 18:25:39,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:39,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:39,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:39,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:25:39,080 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 18:25:39,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:39,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1143304219, now seen corresponding path program 2 times [2024-06-27 18:25:39,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:39,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309620481] [2024-06-27 18:25:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:39,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:40,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309620481] [2024-06-27 18:25:40,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309620481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:40,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:40,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:40,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77841432] [2024-06-27 18:25:40,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:40,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:40,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:40,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:40,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 312 transitions, 4759 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:40,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:40,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:40,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:41,063 INFO L124 PetriNetUnfolderBase]: 1557/2765 cut-off events. [2024-06-27 18:25:41,064 INFO L125 PetriNetUnfolderBase]: For 88001/88001 co-relation queries the response was YES. [2024-06-27 18:25:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19083 conditions, 2765 events. 1557/2765 cut-off events. For 88001/88001 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16405 event pairs, 400 based on Foata normal form. 1/2598 useless extension candidates. Maximal degree in co-relation 18957. Up to 2460 conditions per place. [2024-06-27 18:25:41,109 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 267 selfloop transitions, 63 changer transitions 0/337 dead transitions. [2024-06-27 18:25:41,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 337 transitions, 5603 flow [2024-06-27 18:25:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:25:41,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 18:25:41,111 INFO L175 Difference]: Start difference. First operand has 268 places, 312 transitions, 4759 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:25:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 337 transitions, 5603 flow [2024-06-27 18:25:41,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 337 transitions, 5395 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:41,647 INFO L231 Difference]: Finished difference. Result has 270 places, 316 transitions, 4797 flow [2024-06-27 18:25:41,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4551, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4797, PETRI_PLACES=270, PETRI_TRANSITIONS=316} [2024-06-27 18:25:41,648 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-27 18:25:41,648 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 316 transitions, 4797 flow [2024-06-27 18:25:41,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:41,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:41,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:25:41,649 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 18:25:41,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash 211918237, now seen corresponding path program 2 times [2024-06-27 18:25:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448934778] [2024-06-27 18:25:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448934778] [2024-06-27 18:25:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448934778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147170765] [2024-06-27 18:25:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:43,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:43,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 316 transitions, 4797 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:43,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:43,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:43,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:44,240 INFO L124 PetriNetUnfolderBase]: 1575/2791 cut-off events. [2024-06-27 18:25:44,241 INFO L125 PetriNetUnfolderBase]: For 89316/89316 co-relation queries the response was YES. [2024-06-27 18:25:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19235 conditions, 2791 events. 1575/2791 cut-off events. For 89316/89316 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16527 event pairs, 402 based on Foata normal form. 2/2619 useless extension candidates. Maximal degree in co-relation 19108. Up to 2490 conditions per place. [2024-06-27 18:25:44,286 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 282 selfloop transitions, 55 changer transitions 0/344 dead transitions. [2024-06-27 18:25:44,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 344 transitions, 5659 flow [2024-06-27 18:25:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:25:44,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 18:25:44,288 INFO L175 Difference]: Start difference. First operand has 270 places, 316 transitions, 4797 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:25:44,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 344 transitions, 5659 flow [2024-06-27 18:25:44,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 344 transitions, 5501 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:44,832 INFO L231 Difference]: Finished difference. Result has 273 places, 320 transitions, 4853 flow [2024-06-27 18:25:44,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4639, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4853, PETRI_PLACES=273, PETRI_TRANSITIONS=320} [2024-06-27 18:25:44,833 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 233 predicate places. [2024-06-27 18:25:44,833 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 320 transitions, 4853 flow [2024-06-27 18:25:44,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:44,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:44,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:44,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:25:44,834 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 18:25:44,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash -475067993, now seen corresponding path program 8 times [2024-06-27 18:25:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:44,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796388908] [2024-06-27 18:25:44,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:45,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:45,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796388908] [2024-06-27 18:25:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796388908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:45,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665132621] [2024-06-27 18:25:45,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:45,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:45,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:45,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 320 transitions, 4853 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:45,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:45,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:45,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:46,807 INFO L124 PetriNetUnfolderBase]: 1591/2824 cut-off events. [2024-06-27 18:25:46,808 INFO L125 PetriNetUnfolderBase]: For 93686/93686 co-relation queries the response was YES. [2024-06-27 18:25:46,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19574 conditions, 2824 events. 1591/2824 cut-off events. For 93686/93686 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16850 event pairs, 483 based on Foata normal form. 2/2651 useless extension candidates. Maximal degree in co-relation 19446. Up to 2592 conditions per place. [2024-06-27 18:25:46,854 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 313 selfloop transitions, 24 changer transitions 0/344 dead transitions. [2024-06-27 18:25:46,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 344 transitions, 5731 flow [2024-06-27 18:25:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:46,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:46,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:25:46,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 18:25:46,856 INFO L175 Difference]: Start difference. First operand has 273 places, 320 transitions, 4853 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:25:46,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 344 transitions, 5731 flow [2024-06-27 18:25:47,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 344 transitions, 5590 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:47,459 INFO L231 Difference]: Finished difference. Result has 275 places, 322 transitions, 4877 flow [2024-06-27 18:25:47,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4712, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4877, PETRI_PLACES=275, PETRI_TRANSITIONS=322} [2024-06-27 18:25:47,460 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-06-27 18:25:47,461 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 322 transitions, 4877 flow [2024-06-27 18:25:47,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:47,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:47,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:47,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:25:47,461 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 18:25:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1742287587, now seen corresponding path program 3 times [2024-06-27 18:25:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81111839] [2024-06-27 18:25:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81111839] [2024-06-27 18:25:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81111839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743027101] [2024-06-27 18:25:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:48,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:48,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:48,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 322 transitions, 4877 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:48,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:48,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:48,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:49,406 INFO L124 PetriNetUnfolderBase]: 1604/2843 cut-off events. [2024-06-27 18:25:49,406 INFO L125 PetriNetUnfolderBase]: For 95832/95832 co-relation queries the response was YES. [2024-06-27 18:25:49,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19696 conditions, 2843 events. 1604/2843 cut-off events. For 95832/95832 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16995 event pairs, 479 based on Foata normal form. 2/2666 useless extension candidates. Maximal degree in co-relation 19567. Up to 2557 conditions per place. [2024-06-27 18:25:49,450 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 311 selfloop transitions, 32 changer transitions 0/350 dead transitions. [2024-06-27 18:25:49,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 350 transitions, 5850 flow [2024-06-27 18:25:49,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:25:49,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 18:25:49,452 INFO L175 Difference]: Start difference. First operand has 275 places, 322 transitions, 4877 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:25:49,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 350 transitions, 5850 flow [2024-06-27 18:25:50,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 350 transitions, 5695 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:50,117 INFO L231 Difference]: Finished difference. Result has 278 places, 324 transitions, 4849 flow [2024-06-27 18:25:50,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4722, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4849, PETRI_PLACES=278, PETRI_TRANSITIONS=324} [2024-06-27 18:25:50,118 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 238 predicate places. [2024-06-27 18:25:50,118 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 324 transitions, 4849 flow [2024-06-27 18:25:50,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:50,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:50,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:50,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:25:50,119 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 18:25:50,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:50,120 INFO L85 PathProgramCache]: Analyzing trace with hash -924079625, now seen corresponding path program 4 times [2024-06-27 18:25:50,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:50,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147980522] [2024-06-27 18:25:50,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:50,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:51,006 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 18:25:51,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:51,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147980522] [2024-06-27 18:25:51,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147980522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:51,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:51,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:51,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699917572] [2024-06-27 18:25:51,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:51,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:51,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:51,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:51,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:51,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:51,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 324 transitions, 4849 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:51,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:51,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:52,029 INFO L124 PetriNetUnfolderBase]: 1600/2837 cut-off events. [2024-06-27 18:25:52,030 INFO L125 PetriNetUnfolderBase]: For 91457/91457 co-relation queries the response was YES. [2024-06-27 18:25:52,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19357 conditions, 2837 events. 1600/2837 cut-off events. For 91457/91457 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16952 event pairs, 479 based on Foata normal form. 2/2660 useless extension candidates. Maximal degree in co-relation 19227. Up to 2554 conditions per place. [2024-06-27 18:25:52,074 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 309 selfloop transitions, 33 changer transitions 0/349 dead transitions. [2024-06-27 18:25:52,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 349 transitions, 5644 flow [2024-06-27 18:25:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:25:52,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 18:25:52,076 INFO L175 Difference]: Start difference. First operand has 278 places, 324 transitions, 4849 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:25:52,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 349 transitions, 5644 flow [2024-06-27 18:25:52,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 349 transitions, 5534 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:52,703 INFO L231 Difference]: Finished difference. Result has 280 places, 324 transitions, 4810 flow [2024-06-27 18:25:52,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4739, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4810, PETRI_PLACES=280, PETRI_TRANSITIONS=324} [2024-06-27 18:25:52,704 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 240 predicate places. [2024-06-27 18:25:52,704 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 324 transitions, 4810 flow [2024-06-27 18:25:52,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:52,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:52,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:52,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:25:52,705 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 18:25:52,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1748954261, now seen corresponding path program 9 times [2024-06-27 18:25:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:52,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905027509] [2024-06-27 18:25:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:53,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:53,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905027509] [2024-06-27 18:25:53,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905027509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:53,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:53,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577147983] [2024-06-27 18:25:53,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:53,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:53,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:53,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:53,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:53,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:53,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 324 transitions, 4810 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:53,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:53,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:53,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:54,917 INFO L124 PetriNetUnfolderBase]: 1616/2862 cut-off events. [2024-06-27 18:25:54,918 INFO L125 PetriNetUnfolderBase]: For 95277/95277 co-relation queries the response was YES. [2024-06-27 18:25:54,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19624 conditions, 2862 events. 1616/2862 cut-off events. For 95277/95277 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17055 event pairs, 399 based on Foata normal form. 2/2687 useless extension candidates. Maximal degree in co-relation 19493. Up to 2471 conditions per place. [2024-06-27 18:25:54,959 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 274 selfloop transitions, 69 changer transitions 0/350 dead transitions. [2024-06-27 18:25:54,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 350 transitions, 5712 flow [2024-06-27 18:25:54,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:54,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:25:54,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:25:54,961 INFO L175 Difference]: Start difference. First operand has 280 places, 324 transitions, 4810 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:25:54,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 350 transitions, 5712 flow [2024-06-27 18:25:55,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 350 transitions, 5572 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:55,540 INFO L231 Difference]: Finished difference. Result has 281 places, 326 transitions, 4929 flow [2024-06-27 18:25:55,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4929, PETRI_PLACES=281, PETRI_TRANSITIONS=326} [2024-06-27 18:25:55,541 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-27 18:25:55,541 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 326 transitions, 4929 flow [2024-06-27 18:25:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:55,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:55,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:55,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:25:55,542 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 18:25:55,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1748958911, now seen corresponding path program 10 times [2024-06-27 18:25:55,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064369806] [2024-06-27 18:25:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064369806] [2024-06-27 18:25:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064369806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:25:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329780282] [2024-06-27 18:25:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:25:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:25:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:25:56,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:56,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 326 transitions, 4929 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:56,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:56,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:56,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:57,537 INFO L124 PetriNetUnfolderBase]: 1644/2925 cut-off events. [2024-06-27 18:25:57,538 INFO L125 PetriNetUnfolderBase]: For 97137/97137 co-relation queries the response was YES. [2024-06-27 18:25:57,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 2925 events. 1644/2925 cut-off events. For 97137/97137 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17619 event pairs, 403 based on Foata normal form. 2/2748 useless extension candidates. Maximal degree in co-relation 19957. Up to 2439 conditions per place. [2024-06-27 18:25:57,582 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 277 selfloop transitions, 74 changer transitions 0/358 dead transitions. [2024-06-27 18:25:57,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 358 transitions, 5939 flow [2024-06-27 18:25:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:57,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:25:57,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 18:25:57,584 INFO L175 Difference]: Start difference. First operand has 281 places, 326 transitions, 4929 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:25:57,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 358 transitions, 5939 flow [2024-06-27 18:25:58,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 358 transitions, 5700 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:58,178 INFO L231 Difference]: Finished difference. Result has 284 places, 330 transitions, 5049 flow [2024-06-27 18:25:58,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4690, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5049, PETRI_PLACES=284, PETRI_TRANSITIONS=330} [2024-06-27 18:25:58,179 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-27 18:25:58,179 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 330 transitions, 5049 flow [2024-06-27 18:25:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:58,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:25:58,180 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 18:25:58,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash -923840305, now seen corresponding path program 1 times [2024-06-27 18:25:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849683401] [2024-06-27 18:25:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:59,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:59,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849683401] [2024-06-27 18:25:59,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849683401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:59,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:59,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895083365] [2024-06-27 18:25:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:59,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:59,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:59,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:59,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:25:59,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 330 transitions, 5049 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:59,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:59,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:25:59,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:00,043 INFO L124 PetriNetUnfolderBase]: 1660/2958 cut-off events. [2024-06-27 18:26:00,043 INFO L125 PetriNetUnfolderBase]: For 99883/99883 co-relation queries the response was YES. [2024-06-27 18:26:00,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20280 conditions, 2958 events. 1660/2958 cut-off events. For 99883/99883 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 17931 event pairs, 515 based on Foata normal form. 2/2777 useless extension candidates. Maximal degree in co-relation 20146. Up to 2713 conditions per place. [2024-06-27 18:26:00,094 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 322 selfloop transitions, 25 changer transitions 0/354 dead transitions. [2024-06-27 18:26:00,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 354 transitions, 5942 flow [2024-06-27 18:26:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:26:00,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 18:26:00,096 INFO L175 Difference]: Start difference. First operand has 284 places, 330 transitions, 5049 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:26:00,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 354 transitions, 5942 flow [2024-06-27 18:26:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 354 transitions, 5673 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:00,752 INFO L231 Difference]: Finished difference. Result has 288 places, 332 transitions, 4939 flow [2024-06-27 18:26:00,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4780, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4939, PETRI_PLACES=288, PETRI_TRANSITIONS=332} [2024-06-27 18:26:00,753 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-27 18:26:00,753 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 332 transitions, 4939 flow [2024-06-27 18:26:00,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:00,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:00,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:00,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:26:00,753 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 18:26:00,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:00,754 INFO L85 PathProgramCache]: Analyzing trace with hash 847899531, now seen corresponding path program 11 times [2024-06-27 18:26:00,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:00,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856606482] [2024-06-27 18:26:00,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:00,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856606482] [2024-06-27 18:26:01,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856606482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:01,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:01,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:01,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779660561] [2024-06-27 18:26:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:01,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:01,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:01,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:01,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:01,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:01,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 332 transitions, 4939 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:01,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:01,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:01,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:02,886 INFO L124 PetriNetUnfolderBase]: 1786/3213 cut-off events. [2024-06-27 18:26:02,886 INFO L125 PetriNetUnfolderBase]: For 102135/102135 co-relation queries the response was YES. [2024-06-27 18:26:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21333 conditions, 3213 events. 1786/3213 cut-off events. For 102135/102135 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20064 event pairs, 441 based on Foata normal form. 2/3021 useless extension candidates. Maximal degree in co-relation 21197. Up to 2706 conditions per place. [2024-06-27 18:26:02,952 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 319 selfloop transitions, 56 changer transitions 0/382 dead transitions. [2024-06-27 18:26:02,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 382 transitions, 6171 flow [2024-06-27 18:26:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:26:02,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:26:02,954 INFO L175 Difference]: Start difference. First operand has 288 places, 332 transitions, 4939 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:26:02,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 382 transitions, 6171 flow [2024-06-27 18:26:03,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 382 transitions, 6015 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 18:26:03,745 INFO L231 Difference]: Finished difference. Result has 291 places, 353 transitions, 5330 flow [2024-06-27 18:26:03,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4783, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5330, PETRI_PLACES=291, PETRI_TRANSITIONS=353} [2024-06-27 18:26:03,746 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 251 predicate places. [2024-06-27 18:26:03,746 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 353 transitions, 5330 flow [2024-06-27 18:26:03,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:03,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:03,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:03,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:26:03,747 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 18:26:03,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:03,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1624371787, now seen corresponding path program 12 times [2024-06-27 18:26:03,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:03,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718130133] [2024-06-27 18:26:03,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:03,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:04,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718130133] [2024-06-27 18:26:04,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718130133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:04,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:04,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:04,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820096847] [2024-06-27 18:26:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:04,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:04,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:04,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 353 transitions, 5330 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:04,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:04,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:04,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:05,978 INFO L124 PetriNetUnfolderBase]: 1802/3247 cut-off events. [2024-06-27 18:26:05,978 INFO L125 PetriNetUnfolderBase]: For 108097/108097 co-relation queries the response was YES. [2024-06-27 18:26:06,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22008 conditions, 3247 events. 1802/3247 cut-off events. For 108097/108097 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20376 event pairs, 537 based on Foata normal form. 2/3059 useless extension candidates. Maximal degree in co-relation 21869. Up to 2765 conditions per place. [2024-06-27 18:26:06,036 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 292 selfloop transitions, 79 changer transitions 0/378 dead transitions. [2024-06-27 18:26:06,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 378 transitions, 6294 flow [2024-06-27 18:26:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 18:26:06,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-27 18:26:06,038 INFO L175 Difference]: Start difference. First operand has 291 places, 353 transitions, 5330 flow. Second operand 9 states and 136 transitions. [2024-06-27 18:26:06,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 378 transitions, 6294 flow [2024-06-27 18:26:06,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 378 transitions, 6101 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:06,871 INFO L231 Difference]: Finished difference. Result has 295 places, 355 transitions, 5439 flow [2024-06-27 18:26:06,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5439, PETRI_PLACES=295, PETRI_TRANSITIONS=355} [2024-06-27 18:26:06,871 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 255 predicate places. [2024-06-27 18:26:06,872 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 355 transitions, 5439 flow [2024-06-27 18:26:06,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:06,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:06,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:06,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:26:06,872 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 18:26:06,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash 432015069, now seen corresponding path program 3 times [2024-06-27 18:26:06,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:06,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723598151] [2024-06-27 18:26:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:06,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:07,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:07,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723598151] [2024-06-27 18:26:07,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723598151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:07,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739846700] [2024-06-27 18:26:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:07,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:07,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:07,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:07,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 355 transitions, 5439 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:07,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:07,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:07,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:08,973 INFO L124 PetriNetUnfolderBase]: 1800/3245 cut-off events. [2024-06-27 18:26:08,974 INFO L125 PetriNetUnfolderBase]: For 103577/103577 co-relation queries the response was YES. [2024-06-27 18:26:09,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21779 conditions, 3245 events. 1800/3245 cut-off events. For 103577/103577 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 20373 event pairs, 533 based on Foata normal form. 1/3056 useless extension candidates. Maximal degree in co-relation 21639. Up to 2782 conditions per place. [2024-06-27 18:26:09,171 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 284 selfloop transitions, 87 changer transitions 0/378 dead transitions. [2024-06-27 18:26:09,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 378 transitions, 6340 flow [2024-06-27 18:26:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-27 18:26:09,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2024-06-27 18:26:09,173 INFO L175 Difference]: Start difference. First operand has 295 places, 355 transitions, 5439 flow. Second operand 9 states and 134 transitions. [2024-06-27 18:26:09,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 378 transitions, 6340 flow [2024-06-27 18:26:10,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 378 transitions, 6076 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:10,022 INFO L231 Difference]: Finished difference. Result has 297 places, 357 transitions, 5448 flow [2024-06-27 18:26:10,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5175, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5448, PETRI_PLACES=297, PETRI_TRANSITIONS=357} [2024-06-27 18:26:10,023 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 257 predicate places. [2024-06-27 18:26:10,023 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 357 transitions, 5448 flow [2024-06-27 18:26:10,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:10,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:10,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:10,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:26:10,024 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 18:26:10,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:10,025 INFO L85 PathProgramCache]: Analyzing trace with hash -344342053, now seen corresponding path program 13 times [2024-06-27 18:26:10,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:10,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034551914] [2024-06-27 18:26:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:11,047 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 18:26:11,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:11,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034551914] [2024-06-27 18:26:11,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034551914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:11,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:11,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:11,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077702833] [2024-06-27 18:26:11,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:11,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:11,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:11,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:11,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:11,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 357 transitions, 5448 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:11,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:11,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:11,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:12,333 INFO L124 PetriNetUnfolderBase]: 1824/3294 cut-off events. [2024-06-27 18:26:12,334 INFO L125 PetriNetUnfolderBase]: For 102850/102850 co-relation queries the response was YES. [2024-06-27 18:26:12,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22081 conditions, 3294 events. 1824/3294 cut-off events. For 102850/102850 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20809 event pairs, 498 based on Foata normal form. 2/3100 useless extension candidates. Maximal degree in co-relation 21940. Up to 2676 conditions per place. [2024-06-27 18:26:12,392 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 307 selfloop transitions, 73 changer transitions 0/387 dead transitions. [2024-06-27 18:26:12,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 387 transitions, 6486 flow [2024-06-27 18:26:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 18:26:12,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-27 18:26:12,394 INFO L175 Difference]: Start difference. First operand has 297 places, 357 transitions, 5448 flow. Second operand 9 states and 140 transitions. [2024-06-27 18:26:12,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 387 transitions, 6486 flow [2024-06-27 18:26:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 387 transitions, 6278 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:13,223 INFO L231 Difference]: Finished difference. Result has 300 places, 360 transitions, 5598 flow [2024-06-27 18:26:13,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5240, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5598, PETRI_PLACES=300, PETRI_TRANSITIONS=360} [2024-06-27 18:26:13,224 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 260 predicate places. [2024-06-27 18:26:13,224 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 360 transitions, 5598 flow [2024-06-27 18:26:13,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:13,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:13,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:26:13,225 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 18:26:13,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash -339688829, now seen corresponding path program 5 times [2024-06-27 18:26:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770158317] [2024-06-27 18:26:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:13,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770158317] [2024-06-27 18:26:14,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770158317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:14,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934532657] [2024-06-27 18:26:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:14,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:14,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:14,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 360 transitions, 5598 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:14,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:14,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:14,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:15,465 INFO L124 PetriNetUnfolderBase]: 1829/3297 cut-off events. [2024-06-27 18:26:15,465 INFO L125 PetriNetUnfolderBase]: For 101297/101297 co-relation queries the response was YES. [2024-06-27 18:26:15,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22217 conditions, 3297 events. 1829/3297 cut-off events. For 101297/101297 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20786 event pairs, 511 based on Foata normal form. 2/3100 useless extension candidates. Maximal degree in co-relation 22074. Up to 2843 conditions per place. [2024-06-27 18:26:15,529 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 308 selfloop transitions, 71 changer transitions 0/386 dead transitions. [2024-06-27 18:26:15,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 386 transitions, 6524 flow [2024-06-27 18:26:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:26:15,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 18:26:15,531 INFO L175 Difference]: Start difference. First operand has 300 places, 360 transitions, 5598 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:26:15,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 386 transitions, 6524 flow [2024-06-27 18:26:16,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 386 transitions, 6262 flow, removed 78 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:16,381 INFO L231 Difference]: Finished difference. Result has 304 places, 362 transitions, 5560 flow [2024-06-27 18:26:16,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5560, PETRI_PLACES=304, PETRI_TRANSITIONS=362} [2024-06-27 18:26:16,382 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 264 predicate places. [2024-06-27 18:26:16,382 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 362 transitions, 5560 flow [2024-06-27 18:26:16,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:16,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:16,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:16,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:26:16,383 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 18:26:16,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash -173634973, now seen corresponding path program 14 times [2024-06-27 18:26:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890765598] [2024-06-27 18:26:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:16,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:17,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:17,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890765598] [2024-06-27 18:26:17,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890765598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:17,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:17,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:17,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415979663] [2024-06-27 18:26:17,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:17,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:17,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:17,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:17,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:17,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:17,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 362 transitions, 5560 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:17,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:17,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:17,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:18,558 INFO L124 PetriNetUnfolderBase]: 1845/3325 cut-off events. [2024-06-27 18:26:18,558 INFO L125 PetriNetUnfolderBase]: For 95418/95418 co-relation queries the response was YES. [2024-06-27 18:26:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22176 conditions, 3325 events. 1845/3325 cut-off events. For 95418/95418 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20975 event pairs, 504 based on Foata normal form. 2/3130 useless extension candidates. Maximal degree in co-relation 22032. Up to 2886 conditions per place. [2024-06-27 18:26:18,626 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 308 selfloop transitions, 71 changer transitions 0/386 dead transitions. [2024-06-27 18:26:18,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 386 transitions, 6530 flow [2024-06-27 18:26:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:18,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 18:26:18,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-27 18:26:18,628 INFO L175 Difference]: Start difference. First operand has 304 places, 362 transitions, 5560 flow. Second operand 9 states and 136 transitions. [2024-06-27 18:26:18,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 386 transitions, 6530 flow [2024-06-27 18:26:19,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 386 transitions, 6350 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 18:26:19,467 INFO L231 Difference]: Finished difference. Result has 305 places, 364 transitions, 5648 flow [2024-06-27 18:26:19,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5380, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5648, PETRI_PLACES=305, PETRI_TRANSITIONS=364} [2024-06-27 18:26:19,468 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 265 predicate places. [2024-06-27 18:26:19,468 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 364 transitions, 5648 flow [2024-06-27 18:26:19,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:19,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:19,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:19,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:26:19,469 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 18:26:19,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:19,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1018717281, now seen corresponding path program 15 times [2024-06-27 18:26:19,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:19,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884838259] [2024-06-27 18:26:19,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:19,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:20,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884838259] [2024-06-27 18:26:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884838259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:20,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744980399] [2024-06-27 18:26:20,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:20,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:20,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:20,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 364 transitions, 5648 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:20,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:20,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:21,580 INFO L124 PetriNetUnfolderBase]: 1869/3375 cut-off events. [2024-06-27 18:26:21,581 INFO L125 PetriNetUnfolderBase]: For 99121/99121 co-relation queries the response was YES. [2024-06-27 18:26:21,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22659 conditions, 3375 events. 1869/3375 cut-off events. For 99121/99121 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 21410 event pairs, 486 based on Foata normal form. 2/3178 useless extension candidates. Maximal degree in co-relation 22514. Up to 2858 conditions per place. [2024-06-27 18:26:21,645 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 314 selfloop transitions, 72 changer transitions 0/393 dead transitions. [2024-06-27 18:26:21,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 393 transitions, 6694 flow [2024-06-27 18:26:21,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 18:26:21,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-27 18:26:21,646 INFO L175 Difference]: Start difference. First operand has 305 places, 364 transitions, 5648 flow. Second operand 9 states and 140 transitions. [2024-06-27 18:26:21,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 393 transitions, 6694 flow [2024-06-27 18:26:22,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 393 transitions, 6442 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:22,488 INFO L231 Difference]: Finished difference. Result has 308 places, 367 transitions, 5727 flow [2024-06-27 18:26:22,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5400, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5727, PETRI_PLACES=308, PETRI_TRANSITIONS=367} [2024-06-27 18:26:22,489 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 268 predicate places. [2024-06-27 18:26:22,489 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 367 transitions, 5727 flow [2024-06-27 18:26:22,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:22,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:22,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:22,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:26:22,490 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 18:26:22,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1829295645, now seen corresponding path program 16 times [2024-06-27 18:26:22,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363176668] [2024-06-27 18:26:22,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:23,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363176668] [2024-06-27 18:26:23,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363176668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:23,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:23,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:23,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972527242] [2024-06-27 18:26:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:23,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:23,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:23,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:23,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:23,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 367 transitions, 5727 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:23,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:23,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:23,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:24,654 INFO L124 PetriNetUnfolderBase]: 1885/3408 cut-off events. [2024-06-27 18:26:24,654 INFO L125 PetriNetUnfolderBase]: For 100247/100247 co-relation queries the response was YES. [2024-06-27 18:26:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22869 conditions, 3408 events. 1885/3408 cut-off events. For 100247/100247 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21758 event pairs, 622 based on Foata normal form. 2/3208 useless extension candidates. Maximal degree in co-relation 22722. Up to 3081 conditions per place. [2024-06-27 18:26:24,709 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 352 selfloop transitions, 30 changer transitions 0/389 dead transitions. [2024-06-27 18:26:24,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 389 transitions, 6699 flow [2024-06-27 18:26:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 18:26:24,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-06-27 18:26:24,711 INFO L175 Difference]: Start difference. First operand has 308 places, 367 transitions, 5727 flow. Second operand 9 states and 131 transitions. [2024-06-27 18:26:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 389 transitions, 6699 flow [2024-06-27 18:26:25,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 389 transitions, 6424 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:25,604 INFO L231 Difference]: Finished difference. Result has 311 places, 369 transitions, 5642 flow [2024-06-27 18:26:25,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5454, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5642, PETRI_PLACES=311, PETRI_TRANSITIONS=369} [2024-06-27 18:26:25,605 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-27 18:26:25,605 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 369 transitions, 5642 flow [2024-06-27 18:26:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:25,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:25,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:25,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:26:25,606 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 18:26:25,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:25,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1829302589, now seen corresponding path program 6 times [2024-06-27 18:26:25,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:25,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724461005] [2024-06-27 18:26:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:25,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:26,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:26,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724461005] [2024-06-27 18:26:26,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724461005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:26,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:26,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:26,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26092556] [2024-06-27 18:26:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:26,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:26,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:26,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 369 transitions, 5642 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:26,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:26,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:26,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:27,895 INFO L124 PetriNetUnfolderBase]: 1898/3427 cut-off events. [2024-06-27 18:26:27,895 INFO L125 PetriNetUnfolderBase]: For 95606/95606 co-relation queries the response was YES. [2024-06-27 18:26:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22605 conditions, 3427 events. 1898/3427 cut-off events. For 95606/95606 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21835 event pairs, 613 based on Foata normal form. 2/3222 useless extension candidates. Maximal degree in co-relation 22457. Up to 2995 conditions per place. [2024-06-27 18:26:27,957 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 340 selfloop transitions, 48 changer transitions 0/395 dead transitions. [2024-06-27 18:26:27,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 395 transitions, 6697 flow [2024-06-27 18:26:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:26:27,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 18:26:27,958 INFO L175 Difference]: Start difference. First operand has 311 places, 369 transitions, 5642 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:26:27,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 395 transitions, 6697 flow [2024-06-27 18:26:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 395 transitions, 6537 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:28,818 INFO L231 Difference]: Finished difference. Result has 314 places, 371 transitions, 5640 flow [2024-06-27 18:26:28,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5482, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5640, PETRI_PLACES=314, PETRI_TRANSITIONS=371} [2024-06-27 18:26:28,819 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-27 18:26:28,819 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 371 transitions, 5640 flow [2024-06-27 18:26:28,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:28,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:28,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:28,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:26:28,820 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 18:26:28,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:28,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1829541909, now seen corresponding path program 2 times [2024-06-27 18:26:28,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:28,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359312157] [2024-06-27 18:26:28,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:28,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359312157] [2024-06-27 18:26:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359312157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93039913] [2024-06-27 18:26:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:29,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:29,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:29,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:29,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 371 transitions, 5640 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:29,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:29,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:29,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:30,958 INFO L124 PetriNetUnfolderBase]: 1914/3456 cut-off events. [2024-06-27 18:26:30,959 INFO L125 PetriNetUnfolderBase]: For 96399/96399 co-relation queries the response was YES. [2024-06-27 18:26:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22782 conditions, 3456 events. 1914/3456 cut-off events. For 96399/96399 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22094 event pairs, 633 based on Foata normal form. 2/3252 useless extension candidates. Maximal degree in co-relation 22633. Up to 3128 conditions per place. [2024-06-27 18:26:31,024 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 354 selfloop transitions, 32 changer transitions 0/393 dead transitions. [2024-06-27 18:26:31,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 393 transitions, 6609 flow [2024-06-27 18:26:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-27 18:26:31,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-06-27 18:26:31,026 INFO L175 Difference]: Start difference. First operand has 314 places, 371 transitions, 5640 flow. Second operand 9 states and 131 transitions. [2024-06-27 18:26:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 393 transitions, 6609 flow [2024-06-27 18:26:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 393 transitions, 6484 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:26:31,857 INFO L231 Difference]: Finished difference. Result has 314 places, 373 transitions, 5695 flow [2024-06-27 18:26:31,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5515, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5695, PETRI_PLACES=314, PETRI_TRANSITIONS=373} [2024-06-27 18:26:31,858 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-27 18:26:31,858 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 373 transitions, 5695 flow [2024-06-27 18:26:31,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:31,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:31,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:31,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:26:31,859 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 18:26:31,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1829533229, now seen corresponding path program 7 times [2024-06-27 18:26:31,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:31,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595006544] [2024-06-27 18:26:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:31,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:32,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:32,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:32,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595006544] [2024-06-27 18:26:32,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595006544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:32,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:32,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:32,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041538513] [2024-06-27 18:26:32,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:32,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:32,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:32,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:32,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:32,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 373 transitions, 5695 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:32,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:32,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:32,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:34,353 INFO L124 PetriNetUnfolderBase]: 1910/3450 cut-off events. [2024-06-27 18:26:34,353 INFO L125 PetriNetUnfolderBase]: For 93204/93204 co-relation queries the response was YES. [2024-06-27 18:26:34,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22504 conditions, 3450 events. 1910/3450 cut-off events. For 93204/93204 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22027 event pairs, 615 based on Foata normal form. 2/3244 useless extension candidates. Maximal degree in co-relation 22355. Up to 3020 conditions per place. [2024-06-27 18:26:34,405 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 343 selfloop transitions, 46 changer transitions 0/396 dead transitions. [2024-06-27 18:26:34,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 396 transitions, 6578 flow [2024-06-27 18:26:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:26:34,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 18:26:34,407 INFO L175 Difference]: Start difference. First operand has 314 places, 373 transitions, 5695 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:26:34,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 396 transitions, 6578 flow [2024-06-27 18:26:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 396 transitions, 6396 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:35,211 INFO L231 Difference]: Finished difference. Result has 317 places, 373 transitions, 5613 flow [2024-06-27 18:26:35,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5513, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5613, PETRI_PLACES=317, PETRI_TRANSITIONS=373} [2024-06-27 18:26:35,212 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-27 18:26:35,212 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 373 transitions, 5613 flow [2024-06-27 18:26:35,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:35,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:35,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:35,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:26:35,213 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 18:26:35,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 491333101, now seen corresponding path program 17 times [2024-06-27 18:26:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8701853] [2024-06-27 18:26:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:36,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8701853] [2024-06-27 18:26:36,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8701853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:36,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:36,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:36,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290423621] [2024-06-27 18:26:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:36,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:36,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:36,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:36,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:36,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:36,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 373 transitions, 5613 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:36,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:36,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:36,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:37,483 INFO L124 PetriNetUnfolderBase]: 1926/3474 cut-off events. [2024-06-27 18:26:37,484 INFO L125 PetriNetUnfolderBase]: For 93431/93431 co-relation queries the response was YES. [2024-06-27 18:26:37,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22707 conditions, 3474 events. 1926/3474 cut-off events. For 93431/93431 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22179 event pairs, 527 based on Foata normal form. 2/3270 useless extension candidates. Maximal degree in co-relation 22557. Up to 3040 conditions per place. [2024-06-27 18:26:37,546 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 320 selfloop transitions, 68 changer transitions 0/395 dead transitions. [2024-06-27 18:26:37,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 395 transitions, 6601 flow [2024-06-27 18:26:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:37,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 18:26:37,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:26:37,548 INFO L175 Difference]: Start difference. First operand has 317 places, 373 transitions, 5613 flow. Second operand 9 states and 135 transitions. [2024-06-27 18:26:37,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 395 transitions, 6601 flow [2024-06-27 18:26:38,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 395 transitions, 6469 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:26:38,399 INFO L231 Difference]: Finished difference. Result has 315 places, 375 transitions, 5746 flow [2024-06-27 18:26:38,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5481, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5746, PETRI_PLACES=315, PETRI_TRANSITIONS=375} [2024-06-27 18:26:38,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-27 18:26:38,400 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 375 transitions, 5746 flow [2024-06-27 18:26:38,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:38,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:38,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:26:38,401 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 18:26:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:38,401 INFO L85 PathProgramCache]: Analyzing trace with hash 491513025, now seen corresponding path program 8 times [2024-06-27 18:26:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741977399] [2024-06-27 18:26:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:39,260 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 18:26:39,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:39,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741977399] [2024-06-27 18:26:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741977399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:39,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53105027] [2024-06-27 18:26:39,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:39,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:39,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:39,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:39,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 375 transitions, 5746 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:39,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:39,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:39,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:40,371 INFO L124 PetriNetUnfolderBase]: 1922/3468 cut-off events. [2024-06-27 18:26:40,372 INFO L125 PetriNetUnfolderBase]: For 91042/91042 co-relation queries the response was YES. [2024-06-27 18:26:40,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22551 conditions, 3468 events. 1922/3468 cut-off events. For 91042/91042 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22151 event pairs, 527 based on Foata normal form. 2/3263 useless extension candidates. Maximal degree in co-relation 22401. Up to 3026 conditions per place. [2024-06-27 18:26:40,435 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 319 selfloop transitions, 70 changer transitions 0/396 dead transitions. [2024-06-27 18:26:40,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 396 transitions, 6620 flow [2024-06-27 18:26:40,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 18:26:40,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 18:26:40,436 INFO L175 Difference]: Start difference. First operand has 315 places, 375 transitions, 5746 flow. Second operand 10 states and 146 transitions. [2024-06-27 18:26:40,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 396 transitions, 6620 flow [2024-06-27 18:26:41,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 396 transitions, 6371 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:41,191 INFO L231 Difference]: Finished difference. Result has 318 places, 375 transitions, 5642 flow [2024-06-27 18:26:41,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5497, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5642, PETRI_PLACES=318, PETRI_TRANSITIONS=375} [2024-06-27 18:26:41,191 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-27 18:26:41,192 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 375 transitions, 5642 flow [2024-06-27 18:26:41,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:41,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:41,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:41,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:26:41,192 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 18:26:41,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash -49152903, now seen corresponding path program 18 times [2024-06-27 18:26:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170950983] [2024-06-27 18:26:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:42,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:42,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:42,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170950983] [2024-06-27 18:26:42,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170950983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:42,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:42,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:42,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59823902] [2024-06-27 18:26:42,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:42,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:42,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:42,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 375 transitions, 5642 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:42,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:42,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:42,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:43,375 INFO L124 PetriNetUnfolderBase]: 1946/3519 cut-off events. [2024-06-27 18:26:43,375 INFO L125 PetriNetUnfolderBase]: For 94376/94376 co-relation queries the response was YES. [2024-06-27 18:26:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22891 conditions, 3519 events. 1946/3519 cut-off events. For 94376/94376 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22565 event pairs, 523 based on Foata normal form. 2/3312 useless extension candidates. Maximal degree in co-relation 22740. Up to 3051 conditions per place. [2024-06-27 18:26:43,446 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 327 selfloop transitions, 68 changer transitions 0/402 dead transitions. [2024-06-27 18:26:43,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 402 transitions, 6708 flow [2024-06-27 18:26:43,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:43,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 18:26:43,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42901234567901236 [2024-06-27 18:26:43,447 INFO L175 Difference]: Start difference. First operand has 318 places, 375 transitions, 5642 flow. Second operand 9 states and 139 transitions. [2024-06-27 18:26:43,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 402 transitions, 6708 flow [2024-06-27 18:26:44,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 402 transitions, 6355 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 18:26:44,517 INFO L231 Difference]: Finished difference. Result has 318 places, 378 transitions, 5610 flow [2024-06-27 18:26:44,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5610, PETRI_PLACES=318, PETRI_TRANSITIONS=378} [2024-06-27 18:26:44,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-27 18:26:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 378 transitions, 5610 flow [2024-06-27 18:26:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:44,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:44,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:26:44,519 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 18:26:44,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:44,519 INFO L85 PathProgramCache]: Analyzing trace with hash 498008455, now seen corresponding path program 3 times [2024-06-27 18:26:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492868464] [2024-06-27 18:26:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:44,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:45,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:45,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492868464] [2024-06-27 18:26:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492868464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:45,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837382711] [2024-06-27 18:26:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:45,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:45,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:45,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 378 transitions, 5610 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:45,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:45,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:45,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:46,729 INFO L124 PetriNetUnfolderBase]: 1962/3552 cut-off events. [2024-06-27 18:26:46,729 INFO L125 PetriNetUnfolderBase]: For 97597/97597 co-relation queries the response was YES. [2024-06-27 18:26:46,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22864 conditions, 3552 events. 1962/3552 cut-off events. For 97597/97597 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22872 event pairs, 655 based on Foata normal form. 2/3342 useless extension candidates. Maximal degree in co-relation 22713. Up to 3240 conditions per place. [2024-06-27 18:26:46,795 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 364 selfloop transitions, 27 changer transitions 0/398 dead transitions. [2024-06-27 18:26:46,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 398 transitions, 6587 flow [2024-06-27 18:26:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:46,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 18:26:46,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2024-06-27 18:26:46,798 INFO L175 Difference]: Start difference. First operand has 318 places, 378 transitions, 5610 flow. Second operand 9 states and 130 transitions. [2024-06-27 18:26:46,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 398 transitions, 6587 flow [2024-06-27 18:26:47,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 398 transitions, 6296 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:47,633 INFO L231 Difference]: Finished difference. Result has 321 places, 380 transitions, 5490 flow [2024-06-27 18:26:47,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5319, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5490, PETRI_PLACES=321, PETRI_TRANSITIONS=380} [2024-06-27 18:26:47,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 281 predicate places. [2024-06-27 18:26:47,634 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 380 transitions, 5490 flow [2024-06-27 18:26:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:47,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:47,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:47,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:26:47,634 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 18:26:47,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1969303001, now seen corresponding path program 19 times [2024-06-27 18:26:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918943194] [2024-06-27 18:26:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:47,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:48,637 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 18:26:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918943194] [2024-06-27 18:26:48,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918943194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:48,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:48,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:48,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307160851] [2024-06-27 18:26:48,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:48,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:48,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:48,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 380 transitions, 5490 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:48,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:48,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:49,910 INFO L124 PetriNetUnfolderBase]: 1978/3581 cut-off events. [2024-06-27 18:26:49,911 INFO L125 PetriNetUnfolderBase]: For 97925/97925 co-relation queries the response was YES. [2024-06-27 18:26:49,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22743 conditions, 3581 events. 1978/3581 cut-off events. For 97925/97925 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23106 event pairs, 654 based on Foata normal form. 2/3370 useless extension candidates. Maximal degree in co-relation 22591. Up to 3268 conditions per place. [2024-06-27 18:26:49,976 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 365 selfloop transitions, 28 changer transitions 0/400 dead transitions. [2024-06-27 18:26:49,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 400 transitions, 6490 flow [2024-06-27 18:26:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 18:26:49,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 18:26:49,978 INFO L175 Difference]: Start difference. First operand has 321 places, 380 transitions, 5490 flow. Second operand 10 states and 140 transitions. [2024-06-27 18:26:49,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 400 transitions, 6490 flow [2024-06-27 18:26:50,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 400 transitions, 6335 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:50,854 INFO L231 Difference]: Finished difference. Result has 324 places, 382 transitions, 5530 flow [2024-06-27 18:26:50,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5530, PETRI_PLACES=324, PETRI_TRANSITIONS=382} [2024-06-27 18:26:50,855 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 284 predicate places. [2024-06-27 18:26:50,855 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 382 transitions, 5530 flow [2024-06-27 18:26:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:50,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:50,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:26:50,856 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 18:26:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash -140656591, now seen corresponding path program 20 times [2024-06-27 18:26:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631593705] [2024-06-27 18:26:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:50,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631593705] [2024-06-27 18:26:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631593705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:51,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400618278] [2024-06-27 18:26:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:51,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:51,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 382 transitions, 5530 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:51,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:51,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:51,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:52,942 INFO L124 PetriNetUnfolderBase]: 1978/3581 cut-off events. [2024-06-27 18:26:52,943 INFO L125 PetriNetUnfolderBase]: For 96619/96619 co-relation queries the response was YES. [2024-06-27 18:26:52,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22567 conditions, 3581 events. 1978/3581 cut-off events. For 96619/96619 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23123 event pairs, 645 based on Foata normal form. 2/3370 useless extension candidates. Maximal degree in co-relation 22414. Up to 3217 conditions per place. [2024-06-27 18:26:53,006 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 360 selfloop transitions, 36 changer transitions 0/403 dead transitions. [2024-06-27 18:26:53,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 403 transitions, 6544 flow [2024-06-27 18:26:53,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-27 18:26:53,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104938271604938 [2024-06-27 18:26:53,008 INFO L175 Difference]: Start difference. First operand has 324 places, 382 transitions, 5530 flow. Second operand 9 states and 133 transitions. [2024-06-27 18:26:53,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 403 transitions, 6544 flow [2024-06-27 18:26:53,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 403 transitions, 6365 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 18:26:53,991 INFO L231 Difference]: Finished difference. Result has 325 places, 384 transitions, 5566 flow [2024-06-27 18:26:53,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5351, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5566, PETRI_PLACES=325, PETRI_TRANSITIONS=384} [2024-06-27 18:26:53,992 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 285 predicate places. [2024-06-27 18:26:53,992 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 384 transitions, 5566 flow [2024-06-27 18:26:53,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:53,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:53,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:53,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:26:53,993 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 18:26:53,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:53,993 INFO L85 PathProgramCache]: Analyzing trace with hash -140419007, now seen corresponding path program 9 times [2024-06-27 18:26:53,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:53,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113392832] [2024-06-27 18:26:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:53,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:54,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113392832] [2024-06-27 18:26:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113392832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659662803] [2024-06-27 18:26:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:54,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:54,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:54,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 384 transitions, 5566 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:54,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:54,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:54,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:55,915 INFO L124 PetriNetUnfolderBase]: 1991/3600 cut-off events. [2024-06-27 18:26:55,915 INFO L125 PetriNetUnfolderBase]: For 94879/94879 co-relation queries the response was YES. [2024-06-27 18:26:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22502 conditions, 3600 events. 1991/3600 cut-off events. For 94879/94879 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23220 event pairs, 650 based on Foata normal form. 2/3385 useless extension candidates. Maximal degree in co-relation 22348. Up to 2920 conditions per place. [2024-06-27 18:26:55,985 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 336 selfloop transitions, 67 changer transitions 0/410 dead transitions. [2024-06-27 18:26:55,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 410 transitions, 6910 flow [2024-06-27 18:26:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:26:55,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:26:55,986 INFO L175 Difference]: Start difference. First operand has 325 places, 384 transitions, 5566 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:26:55,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 410 transitions, 6910 flow [2024-06-27 18:26:57,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 410 transitions, 6711 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:57,010 INFO L231 Difference]: Finished difference. Result has 328 places, 386 transitions, 5552 flow [2024-06-27 18:26:57,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5367, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5552, PETRI_PLACES=328, PETRI_TRANSITIONS=386} [2024-06-27 18:26:57,011 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 288 predicate places. [2024-06-27 18:26:57,011 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 386 transitions, 5552 flow [2024-06-27 18:26:57,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:57,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:57,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:57,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:26:57,012 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 18:26:57,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash 144680863, now seen corresponding path program 10 times [2024-06-27 18:26:57,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:57,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672897896] [2024-06-27 18:26:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672897896] [2024-06-27 18:26:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672897896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:57,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:57,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:57,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899650732] [2024-06-27 18:26:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:57,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:57,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:58,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:26:58,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 386 transitions, 5552 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:58,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:58,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:26:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:59,005 INFO L124 PetriNetUnfolderBase]: 1987/3599 cut-off events. [2024-06-27 18:26:59,005 INFO L125 PetriNetUnfolderBase]: For 87841/87841 co-relation queries the response was YES. [2024-06-27 18:26:59,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22218 conditions, 3599 events. 1987/3599 cut-off events. For 87841/87841 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 23272 event pairs, 771 based on Foata normal form. 2/3386 useless extension candidates. Maximal degree in co-relation 22063. Up to 3283 conditions per place. [2024-06-27 18:26:59,046 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 377 selfloop transitions, 20 changer transitions 0/404 dead transitions. [2024-06-27 18:26:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 404 transitions, 6430 flow [2024-06-27 18:26:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-27 18:26:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-27 18:26:59,048 INFO L175 Difference]: Start difference. First operand has 328 places, 386 transitions, 5552 flow. Second operand 10 states and 141 transitions. [2024-06-27 18:26:59,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 404 transitions, 6430 flow [2024-06-27 18:26:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 404 transitions, 6242 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:26:59,717 INFO L231 Difference]: Finished difference. Result has 330 places, 386 transitions, 5409 flow [2024-06-27 18:26:59,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5364, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5409, PETRI_PLACES=330, PETRI_TRANSITIONS=386} [2024-06-27 18:26:59,718 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-27 18:26:59,718 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 386 transitions, 5409 flow [2024-06-27 18:26:59,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:26:59,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:59,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:59,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:26:59,719 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 18:26:59,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash 144689543, now seen corresponding path program 4 times [2024-06-27 18:26:59,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:59,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112677477] [2024-06-27 18:26:59,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:59,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:59,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:00,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:00,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112677477] [2024-06-27 18:27:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112677477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:00,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:00,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:00,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477088457] [2024-06-27 18:27:00,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:00,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:00,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:00,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 386 transitions, 5409 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:00,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:00,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:00,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:01,436 INFO L124 PetriNetUnfolderBase]: 2003/3627 cut-off events. [2024-06-27 18:27:01,437 INFO L125 PetriNetUnfolderBase]: For 90479/90479 co-relation queries the response was YES. [2024-06-27 18:27:01,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22179 conditions, 3627 events. 2003/3627 cut-off events. For 90479/90479 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23517 event pairs, 784 based on Foata normal form. 2/3415 useless extension candidates. Maximal degree in co-relation 22023. Up to 3326 conditions per place. [2024-06-27 18:27:01,491 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 381 selfloop transitions, 17 changer transitions 0/405 dead transitions. [2024-06-27 18:27:01,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 405 transitions, 6401 flow [2024-06-27 18:27:01,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:01,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 18:27:01,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2024-06-27 18:27:01,492 INFO L175 Difference]: Start difference. First operand has 330 places, 386 transitions, 5409 flow. Second operand 9 states and 129 transitions. [2024-06-27 18:27:01,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 405 transitions, 6401 flow [2024-06-27 18:27:02,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 405 transitions, 6346 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:27:02,204 INFO L231 Difference]: Finished difference. Result has 329 places, 388 transitions, 5513 flow [2024-06-27 18:27:02,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5354, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5513, PETRI_PLACES=329, PETRI_TRANSITIONS=388} [2024-06-27 18:27:02,204 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-27 18:27:02,204 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 388 transitions, 5513 flow [2024-06-27 18:27:02,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:02,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:02,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:02,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:27:02,205 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 18:27:02,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -385316291, now seen corresponding path program 5 times [2024-06-27 18:27:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:02,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802357799] [2024-06-27 18:27:02,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:03,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802357799] [2024-06-27 18:27:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802357799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:03,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:03,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:03,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725824237] [2024-06-27 18:27:03,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:03,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:03,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:03,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:03,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 388 transitions, 5513 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:03,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:03,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:03,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:04,274 INFO L124 PetriNetUnfolderBase]: 2019/3656 cut-off events. [2024-06-27 18:27:04,274 INFO L125 PetriNetUnfolderBase]: For 95956/95956 co-relation queries the response was YES. [2024-06-27 18:27:04,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22516 conditions, 3656 events. 2019/3656 cut-off events. For 95956/95956 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23718 event pairs, 774 based on Foata normal form. 2/3448 useless extension candidates. Maximal degree in co-relation 22360. Up to 3310 conditions per place. [2024-06-27 18:27:04,323 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 385 selfloop transitions, 22 changer transitions 0/414 dead transitions. [2024-06-27 18:27:04,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 414 transitions, 6561 flow [2024-06-27 18:27:04,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-27 18:27:04,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 18:27:04,325 INFO L175 Difference]: Start difference. First operand has 329 places, 388 transitions, 5513 flow. Second operand 11 states and 156 transitions. [2024-06-27 18:27:04,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 414 transitions, 6561 flow [2024-06-27 18:27:05,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 414 transitions, 6418 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:05,050 INFO L231 Difference]: Finished difference. Result has 333 places, 390 transitions, 5543 flow [2024-06-27 18:27:05,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5370, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5543, PETRI_PLACES=333, PETRI_TRANSITIONS=390} [2024-06-27 18:27:05,051 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-27 18:27:05,051 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 390 transitions, 5543 flow [2024-06-27 18:27:05,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:05,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:05,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:05,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:27:05,052 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 18:27:05,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:05,052 INFO L85 PathProgramCache]: Analyzing trace with hash -140649647, now seen corresponding path program 11 times [2024-06-27 18:27:05,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:05,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023502866] [2024-06-27 18:27:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:05,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023502866] [2024-06-27 18:27:05,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023502866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:05,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:05,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059723058] [2024-06-27 18:27:05,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:05,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:05,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 390 transitions, 5543 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:05,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:05,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:05,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:06,693 INFO L124 PetriNetUnfolderBase]: 2015/3645 cut-off events. [2024-06-27 18:27:06,694 INFO L125 PetriNetUnfolderBase]: For 90730/90730 co-relation queries the response was YES. [2024-06-27 18:27:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22198 conditions, 3645 events. 2015/3645 cut-off events. For 90730/90730 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 23602 event pairs, 658 based on Foata normal form. 2/3429 useless extension candidates. Maximal degree in co-relation 22041. Up to 2970 conditions per place. [2024-06-27 18:27:06,744 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 334 selfloop transitions, 71 changer transitions 0/412 dead transitions. [2024-06-27 18:27:06,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 412 transitions, 6589 flow [2024-06-27 18:27:06,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:27:06,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:27:06,745 INFO L175 Difference]: Start difference. First operand has 333 places, 390 transitions, 5543 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:27:06,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 412 transitions, 6589 flow [2024-06-27 18:27:07,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 412 transitions, 6409 flow, removed 72 selfloop flow, removed 8 redundant places. [2024-06-27 18:27:07,536 INFO L231 Difference]: Finished difference. Result has 335 places, 390 transitions, 5510 flow [2024-06-27 18:27:07,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5510, PETRI_PLACES=335, PETRI_TRANSITIONS=390} [2024-06-27 18:27:07,537 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-27 18:27:07,537 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 390 transitions, 5510 flow [2024-06-27 18:27:07,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:07,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:07,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:27:07,537 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 18:27:07,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash 497999775, now seen corresponding path program 12 times [2024-06-27 18:27:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:07,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170237289] [2024-06-27 18:27:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:08,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:08,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170237289] [2024-06-27 18:27:08,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170237289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:08,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:08,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:08,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865490376] [2024-06-27 18:27:08,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:08,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:08,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 390 transitions, 5510 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:08,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:08,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:08,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:09,410 INFO L124 PetriNetUnfolderBase]: 2028/3664 cut-off events. [2024-06-27 18:27:09,411 INFO L125 PetriNetUnfolderBase]: For 89735/89735 co-relation queries the response was YES. [2024-06-27 18:27:09,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22329 conditions, 3664 events. 2028/3664 cut-off events. For 89735/89735 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23704 event pairs, 663 based on Foata normal form. 2/3445 useless extension candidates. Maximal degree in co-relation 22171. Up to 3296 conditions per place. [2024-06-27 18:27:09,487 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 373 selfloop transitions, 34 changer transitions 0/414 dead transitions. [2024-06-27 18:27:09,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 414 transitions, 6609 flow [2024-06-27 18:27:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:27:09,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 18:27:09,489 INFO L175 Difference]: Start difference. First operand has 335 places, 390 transitions, 5510 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:27:09,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 414 transitions, 6609 flow [2024-06-27 18:27:10,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 414 transitions, 6437 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:27:10,561 INFO L231 Difference]: Finished difference. Result has 335 places, 392 transitions, 5455 flow [2024-06-27 18:27:10,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5342, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5455, PETRI_PLACES=335, PETRI_TRANSITIONS=392} [2024-06-27 18:27:10,562 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-27 18:27:10,562 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 392 transitions, 5455 flow [2024-06-27 18:27:10,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:10,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:10,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:10,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:27:10,564 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 18:27:10,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:10,565 INFO L85 PathProgramCache]: Analyzing trace with hash 497769135, now seen corresponding path program 13 times [2024-06-27 18:27:10,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480502203] [2024-06-27 18:27:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:11,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:11,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480502203] [2024-06-27 18:27:11,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480502203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:11,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:11,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667559249] [2024-06-27 18:27:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:11,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:11,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:11,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:11,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 392 transitions, 5455 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:11,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:11,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:11,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:12,436 INFO L124 PetriNetUnfolderBase]: 2024/3658 cut-off events. [2024-06-27 18:27:12,436 INFO L125 PetriNetUnfolderBase]: For 85440/85440 co-relation queries the response was YES. [2024-06-27 18:27:12,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21923 conditions, 3658 events. 2024/3658 cut-off events. For 85440/85440 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23652 event pairs, 663 based on Foata normal form. 2/3439 useless extension candidates. Maximal degree in co-relation 21764. Up to 3293 conditions per place. [2024-06-27 18:27:12,500 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 371 selfloop transitions, 35 changer transitions 0/413 dead transitions. [2024-06-27 18:27:12,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 413 transitions, 6366 flow [2024-06-27 18:27:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:27:12,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 18:27:12,502 INFO L175 Difference]: Start difference. First operand has 335 places, 392 transitions, 5455 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:27:12,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 413 transitions, 6366 flow [2024-06-27 18:27:13,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 413 transitions, 6252 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:27:13,577 INFO L231 Difference]: Finished difference. Result has 337 places, 392 transitions, 5416 flow [2024-06-27 18:27:13,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5341, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5416, PETRI_PLACES=337, PETRI_TRANSITIONS=392} [2024-06-27 18:27:13,578 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-27 18:27:13,578 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 392 transitions, 5416 flow [2024-06-27 18:27:13,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:13,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:13,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:13,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:27:13,578 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 18:27:13,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash -680891681, now seen corresponding path program 6 times [2024-06-27 18:27:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723794232] [2024-06-27 18:27:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723794232] [2024-06-27 18:27:14,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723794232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:14,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:14,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:27:14,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603833055] [2024-06-27 18:27:14,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:14,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:27:14,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:14,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:27:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:27:14,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:14,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 392 transitions, 5416 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:14,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:14,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:14,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:15,493 INFO L124 PetriNetUnfolderBase]: 2021/3653 cut-off events. [2024-06-27 18:27:15,494 INFO L125 PetriNetUnfolderBase]: For 80894/80894 co-relation queries the response was YES. [2024-06-27 18:27:15,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21663 conditions, 3653 events. 2021/3653 cut-off events. For 80894/80894 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23611 event pairs, 671 based on Foata normal form. 2/3435 useless extension candidates. Maximal degree in co-relation 21503. Up to 3265 conditions per place. [2024-06-27 18:27:15,546 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 359 selfloop transitions, 45 changer transitions 0/411 dead transitions. [2024-06-27 18:27:15,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 411 transitions, 6428 flow [2024-06-27 18:27:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:15,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 18:27:15,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:27:15,548 INFO L175 Difference]: Start difference. First operand has 337 places, 392 transitions, 5416 flow. Second operand 9 states and 135 transitions. [2024-06-27 18:27:15,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 411 transitions, 6428 flow [2024-06-27 18:27:16,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 411 transitions, 6340 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:27:16,268 INFO L231 Difference]: Finished difference. Result has 336 places, 394 transitions, 5551 flow [2024-06-27 18:27:16,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5551, PETRI_PLACES=336, PETRI_TRANSITIONS=394} [2024-06-27 18:27:16,269 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-27 18:27:16,269 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 394 transitions, 5551 flow [2024-06-27 18:27:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:16,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:16,269 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 18:27:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:27:16,269 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 18:27:16,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1310843045, now seen corresponding path program 1 times [2024-06-27 18:27:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:16,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383883578] [2024-06-27 18:27:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383883578] [2024-06-27 18:27:17,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383883578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:17,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:17,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481897084] [2024-06-27 18:27:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:17,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:17,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:17,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:17,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:17,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 394 transitions, 5551 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:17,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:17,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:17,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:18,251 INFO L124 PetriNetUnfolderBase]: 2040/3686 cut-off events. [2024-06-27 18:27:18,251 INFO L125 PetriNetUnfolderBase]: For 84056/84056 co-relation queries the response was YES. [2024-06-27 18:27:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22009 conditions, 3686 events. 2040/3686 cut-off events. For 84056/84056 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23842 event pairs, 394 based on Foata normal form. 2/3470 useless extension candidates. Maximal degree in co-relation 21848. Up to 3032 conditions per place. [2024-06-27 18:27:18,304 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 357 selfloop transitions, 71 changer transitions 0/435 dead transitions. [2024-06-27 18:27:18,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 435 transitions, 6687 flow [2024-06-27 18:27:18,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:27:18,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 18:27:18,306 INFO L175 Difference]: Start difference. First operand has 336 places, 394 transitions, 5551 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:27:18,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 435 transitions, 6687 flow [2024-06-27 18:27:19,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 435 transitions, 6480 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:19,093 INFO L231 Difference]: Finished difference. Result has 340 places, 396 transitions, 5616 flow [2024-06-27 18:27:19,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5616, PETRI_PLACES=340, PETRI_TRANSITIONS=396} [2024-06-27 18:27:19,094 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 300 predicate places. [2024-06-27 18:27:19,094 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 396 transitions, 5616 flow [2024-06-27 18:27:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:19,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:19,094 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 18:27:19,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:27:19,094 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 18:27:19,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash 223064357, now seen corresponding path program 2 times [2024-06-27 18:27:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:19,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514943689] [2024-06-27 18:27:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:19,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:19,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514943689] [2024-06-27 18:27:19,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514943689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:19,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:19,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25862294] [2024-06-27 18:27:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:19,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:19,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:19,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 396 transitions, 5616 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:19,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:19,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:21,287 INFO L124 PetriNetUnfolderBase]: 2073/3744 cut-off events. [2024-06-27 18:27:21,287 INFO L125 PetriNetUnfolderBase]: For 88813/88813 co-relation queries the response was YES. [2024-06-27 18:27:21,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22597 conditions, 3744 events. 2073/3744 cut-off events. For 88813/88813 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24382 event pairs, 571 based on Foata normal form. 2/3527 useless extension candidates. Maximal degree in co-relation 22435. Up to 3129 conditions per place. [2024-06-27 18:27:21,351 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 366 selfloop transitions, 65 changer transitions 0/438 dead transitions. [2024-06-27 18:27:21,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 438 transitions, 6881 flow [2024-06-27 18:27:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:21,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:27:21,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 18:27:21,353 INFO L175 Difference]: Start difference. First operand has 340 places, 396 transitions, 5616 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:27:21,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 438 transitions, 6881 flow [2024-06-27 18:27:22,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 438 transitions, 6513 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:22,492 INFO L231 Difference]: Finished difference. Result has 342 places, 400 transitions, 5644 flow [2024-06-27 18:27:22,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5366, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5644, PETRI_PLACES=342, PETRI_TRANSITIONS=400} [2024-06-27 18:27:22,493 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 302 predicate places. [2024-06-27 18:27:22,493 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 400 transitions, 5644 flow [2024-06-27 18:27:22,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:22,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:22,494 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 18:27:22,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:27:22,494 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 18:27:22,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1407275460, now seen corresponding path program 1 times [2024-06-27 18:27:22,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:22,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739441154] [2024-06-27 18:27:22,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:22,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739441154] [2024-06-27 18:27:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739441154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718805112] [2024-06-27 18:27:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:24,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:24,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 400 transitions, 5644 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:24,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:24,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:24,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:25,426 INFO L124 PetriNetUnfolderBase]: 2080/3757 cut-off events. [2024-06-27 18:27:25,426 INFO L125 PetriNetUnfolderBase]: For 84834/84834 co-relation queries the response was YES. [2024-06-27 18:27:25,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22408 conditions, 3757 events. 2080/3757 cut-off events. For 84834/84834 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24451 event pairs, 644 based on Foata normal form. 1/3536 useless extension candidates. Maximal degree in co-relation 22245. Up to 3355 conditions per place. [2024-06-27 18:27:25,503 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 350 selfloop transitions, 71 changer transitions 0/428 dead transitions. [2024-06-27 18:27:25,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 428 transitions, 6652 flow [2024-06-27 18:27:25,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:25,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:27:25,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-27 18:27:25,504 INFO L175 Difference]: Start difference. First operand has 342 places, 400 transitions, 5644 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:27:25,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 428 transitions, 6652 flow [2024-06-27 18:27:26,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 428 transitions, 6416 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:26,668 INFO L231 Difference]: Finished difference. Result has 344 places, 402 transitions, 5622 flow [2024-06-27 18:27:26,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5408, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5622, PETRI_PLACES=344, PETRI_TRANSITIONS=402} [2024-06-27 18:27:26,669 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 304 predicate places. [2024-06-27 18:27:26,669 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 402 transitions, 5622 flow [2024-06-27 18:27:26,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:26,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:26,670 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 18:27:26,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:27:26,670 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 18:27:26,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1420228283, now seen corresponding path program 3 times [2024-06-27 18:27:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584404108] [2024-06-27 18:27:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:27,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:27,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584404108] [2024-06-27 18:27:27,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584404108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:27,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:27,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:27,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23787070] [2024-06-27 18:27:27,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:27,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:27,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 402 transitions, 5622 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:27,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:27,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:27,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:29,215 INFO L124 PetriNetUnfolderBase]: 2096/3787 cut-off events. [2024-06-27 18:27:29,216 INFO L125 PetriNetUnfolderBase]: For 88555/88555 co-relation queries the response was YES. [2024-06-27 18:27:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22503 conditions, 3787 events. 2096/3787 cut-off events. For 88555/88555 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 24710 event pairs, 657 based on Foata normal form. 2/3572 useless extension candidates. Maximal degree in co-relation 22339. Up to 3379 conditions per place. [2024-06-27 18:27:29,299 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 358 selfloop transitions, 67 changer transitions 0/432 dead transitions. [2024-06-27 18:27:29,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 432 transitions, 6718 flow [2024-06-27 18:27:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:27:29,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-27 18:27:29,301 INFO L175 Difference]: Start difference. First operand has 344 places, 402 transitions, 5622 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:27:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 432 transitions, 6718 flow [2024-06-27 18:27:30,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 432 transitions, 6548 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:30,365 INFO L231 Difference]: Finished difference. Result has 346 places, 404 transitions, 5724 flow [2024-06-27 18:27:30,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5724, PETRI_PLACES=346, PETRI_TRANSITIONS=404} [2024-06-27 18:27:30,379 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-06-27 18:27:30,379 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 404 transitions, 5724 flow [2024-06-27 18:27:30,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:30,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:30,380 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 18:27:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:27:30,380 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 18:27:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1415169083, now seen corresponding path program 4 times [2024-06-27 18:27:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422742869] [2024-06-27 18:27:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:31,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:31,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422742869] [2024-06-27 18:27:31,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422742869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:31,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:31,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700538870] [2024-06-27 18:27:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:31,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:31,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:31,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:31,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 404 transitions, 5724 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:31,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:31,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:31,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:32,361 INFO L124 PetriNetUnfolderBase]: 2116/3821 cut-off events. [2024-06-27 18:27:32,362 INFO L125 PetriNetUnfolderBase]: For 94330/94330 co-relation queries the response was YES. [2024-06-27 18:27:32,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22885 conditions, 3821 events. 2116/3821 cut-off events. For 94330/94330 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24986 event pairs, 644 based on Foata normal form. 2/3602 useless extension candidates. Maximal degree in co-relation 22720. Up to 3316 conditions per place. [2024-06-27 18:27:32,417 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 374 selfloop transitions, 60 changer transitions 0/441 dead transitions. [2024-06-27 18:27:32,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 441 transitions, 6868 flow [2024-06-27 18:27:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:27:32,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-27 18:27:32,419 INFO L175 Difference]: Start difference. First operand has 346 places, 404 transitions, 5724 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:27:32,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 441 transitions, 6868 flow [2024-06-27 18:27:33,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 441 transitions, 6618 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:33,324 INFO L231 Difference]: Finished difference. Result has 348 places, 406 transitions, 5734 flow [2024-06-27 18:27:33,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5474, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5734, PETRI_PLACES=348, PETRI_TRANSITIONS=406} [2024-06-27 18:27:33,325 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-27 18:27:33,325 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 406 transitions, 5734 flow [2024-06-27 18:27:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:33,326 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 18:27:33,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:27:33,326 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 18:27:33,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:33,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1419781883, now seen corresponding path program 5 times [2024-06-27 18:27:33,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:33,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258997514] [2024-06-27 18:27:33,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:33,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:34,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:34,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:34,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258997514] [2024-06-27 18:27:34,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258997514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:34,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:34,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565697445] [2024-06-27 18:27:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:34,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:34,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:34,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 406 transitions, 5734 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:34,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:34,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:34,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:35,547 INFO L124 PetriNetUnfolderBase]: 2132/3850 cut-off events. [2024-06-27 18:27:35,548 INFO L125 PetriNetUnfolderBase]: For 96650/96650 co-relation queries the response was YES. [2024-06-27 18:27:35,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23093 conditions, 3850 events. 2132/3850 cut-off events. For 96650/96650 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 25206 event pairs, 669 based on Foata normal form. 2/3636 useless extension candidates. Maximal degree in co-relation 22927. Up to 3375 conditions per place. [2024-06-27 18:27:35,595 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 362 selfloop transitions, 69 changer transitions 0/438 dead transitions. [2024-06-27 18:27:35,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 438 transitions, 6860 flow [2024-06-27 18:27:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:35,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:27:35,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-27 18:27:35,599 INFO L175 Difference]: Start difference. First operand has 348 places, 406 transitions, 5734 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:27:35,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 438 transitions, 6860 flow [2024-06-27 18:27:36,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 438 transitions, 6618 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:36,437 INFO L231 Difference]: Finished difference. Result has 350 places, 408 transitions, 5774 flow [2024-06-27 18:27:36,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5492, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5774, PETRI_PLACES=350, PETRI_TRANSITIONS=408} [2024-06-27 18:27:36,437 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 310 predicate places. [2024-06-27 18:27:36,437 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 408 transitions, 5774 flow [2024-06-27 18:27:36,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:36,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:36,438 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 18:27:36,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:27:36,438 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 18:27:36,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash -237319847, now seen corresponding path program 1 times [2024-06-27 18:27:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:36,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207521623] [2024-06-27 18:27:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:36,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:37,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207521623] [2024-06-27 18:27:37,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207521623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:37,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:37,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:37,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101664216] [2024-06-27 18:27:37,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:37,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:37,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 408 transitions, 5774 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:37,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:37,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:37,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:38,404 INFO L124 PetriNetUnfolderBase]: 2234/4031 cut-off events. [2024-06-27 18:27:38,404 INFO L125 PetriNetUnfolderBase]: For 134552/134552 co-relation queries the response was YES. [2024-06-27 18:27:38,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24355 conditions, 4031 events. 2234/4031 cut-off events. For 134552/134552 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26626 event pairs, 676 based on Foata normal form. 10/3814 useless extension candidates. Maximal degree in co-relation 24188. Up to 3509 conditions per place. [2024-06-27 18:27:38,466 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 399 selfloop transitions, 55 changer transitions 0/461 dead transitions. [2024-06-27 18:27:38,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 461 transitions, 7326 flow [2024-06-27 18:27:38,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:27:38,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-27 18:27:38,467 INFO L175 Difference]: Start difference. First operand has 350 places, 408 transitions, 5774 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:27:38,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 461 transitions, 7326 flow [2024-06-27 18:27:39,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 461 transitions, 7040 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:39,340 INFO L231 Difference]: Finished difference. Result has 356 places, 426 transitions, 6093 flow [2024-06-27 18:27:39,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5510, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6093, PETRI_PLACES=356, PETRI_TRANSITIONS=426} [2024-06-27 18:27:39,340 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 316 predicate places. [2024-06-27 18:27:39,340 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 426 transitions, 6093 flow [2024-06-27 18:27:39,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:39,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:39,341 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 18:27:39,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:27:39,341 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 18:27:39,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1971358711, now seen corresponding path program 6 times [2024-06-27 18:27:39,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679882011] [2024-06-27 18:27:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:40,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:40,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679882011] [2024-06-27 18:27:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679882011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741471757] [2024-06-27 18:27:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:40,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:40,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:40,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:40,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:40,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:40,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 426 transitions, 6093 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:40,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:40,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:40,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:41,754 INFO L124 PetriNetUnfolderBase]: 2281/4115 cut-off events. [2024-06-27 18:27:41,754 INFO L125 PetriNetUnfolderBase]: For 115024/115024 co-relation queries the response was YES. [2024-06-27 18:27:41,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25288 conditions, 4115 events. 2281/4115 cut-off events. For 115024/115024 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 27330 event pairs, 599 based on Foata normal form. 2/3885 useless extension candidates. Maximal degree in co-relation 25117. Up to 3486 conditions per place. [2024-06-27 18:27:41,843 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 396 selfloop transitions, 65 changer transitions 0/468 dead transitions. [2024-06-27 18:27:41,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 468 transitions, 7324 flow [2024-06-27 18:27:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 18:27:41,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-27 18:27:41,844 INFO L175 Difference]: Start difference. First operand has 356 places, 426 transitions, 6093 flow. Second operand 11 states and 173 transitions. [2024-06-27 18:27:41,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 468 transitions, 7324 flow [2024-06-27 18:27:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 468 transitions, 7169 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:43,300 INFO L231 Difference]: Finished difference. Result has 362 places, 432 transitions, 6256 flow [2024-06-27 18:27:43,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6256, PETRI_PLACES=362, PETRI_TRANSITIONS=432} [2024-06-27 18:27:43,301 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 322 predicate places. [2024-06-27 18:27:43,301 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 432 transitions, 6256 flow [2024-06-27 18:27:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:43,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:43,302 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 18:27:43,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:27:43,302 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 18:27:43,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1082841361, now seen corresponding path program 7 times [2024-06-27 18:27:43,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:43,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76464553] [2024-06-27 18:27:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:44,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:44,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76464553] [2024-06-27 18:27:44,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76464553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:44,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:44,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:44,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835515215] [2024-06-27 18:27:44,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:44,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:44,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:44,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 432 transitions, 6256 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:44,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:44,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:44,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:46,055 INFO L124 PetriNetUnfolderBase]: 2315/4177 cut-off events. [2024-06-27 18:27:46,056 INFO L125 PetriNetUnfolderBase]: For 111274/111274 co-relation queries the response was YES. [2024-06-27 18:27:46,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25712 conditions, 4177 events. 2315/4177 cut-off events. For 111274/111274 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 27875 event pairs, 683 based on Foata normal form. 2/3950 useless extension candidates. Maximal degree in co-relation 25539. Up to 3661 conditions per place. [2024-06-27 18:27:46,116 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 402 selfloop transitions, 61 changer transitions 0/470 dead transitions. [2024-06-27 18:27:46,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 470 transitions, 7480 flow [2024-06-27 18:27:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:46,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:27:46,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 18:27:46,117 INFO L175 Difference]: Start difference. First operand has 362 places, 432 transitions, 6256 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:27:46,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 470 transitions, 7480 flow [2024-06-27 18:27:47,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 470 transitions, 7220 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-27 18:27:47,194 INFO L231 Difference]: Finished difference. Result has 363 places, 436 transitions, 6286 flow [2024-06-27 18:27:47,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5996, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6286, PETRI_PLACES=363, PETRI_TRANSITIONS=436} [2024-06-27 18:27:47,194 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-27 18:27:47,194 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 436 transitions, 6286 flow [2024-06-27 18:27:47,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:47,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:47,195 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 18:27:47,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:27:47,195 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 18:27:47,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1082697211, now seen corresponding path program 8 times [2024-06-27 18:27:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:47,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078541229] [2024-06-27 18:27:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:48,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:48,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:48,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078541229] [2024-06-27 18:27:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078541229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:48,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771029424] [2024-06-27 18:27:48,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:48,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:48,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 436 transitions, 6286 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:48,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:48,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:49,672 INFO L124 PetriNetUnfolderBase]: 2380/4296 cut-off events. [2024-06-27 18:27:49,672 INFO L125 PetriNetUnfolderBase]: For 125365/125365 co-relation queries the response was YES. [2024-06-27 18:27:49,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26646 conditions, 4296 events. 2380/4296 cut-off events. For 125365/125365 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28844 event pairs, 736 based on Foata normal form. 2/4067 useless extension candidates. Maximal degree in co-relation 26472. Up to 3790 conditions per place. [2024-06-27 18:27:49,745 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 395 selfloop transitions, 75 changer transitions 0/477 dead transitions. [2024-06-27 18:27:49,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 477 transitions, 7858 flow [2024-06-27 18:27:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:27:49,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-27 18:27:49,746 INFO L175 Difference]: Start difference. First operand has 363 places, 436 transitions, 6286 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:27:49,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 477 transitions, 7858 flow [2024-06-27 18:27:51,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 477 transitions, 7606 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:51,307 INFO L231 Difference]: Finished difference. Result has 366 places, 445 transitions, 6544 flow [2024-06-27 18:27:51,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6544, PETRI_PLACES=366, PETRI_TRANSITIONS=445} [2024-06-27 18:27:51,308 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 326 predicate places. [2024-06-27 18:27:51,308 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 445 transitions, 6544 flow [2024-06-27 18:27:51,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:51,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:51,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:51,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:27:51,308 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:27:51,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash -446224777, now seen corresponding path program 9 times [2024-06-27 18:27:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815566661] [2024-06-27 18:27:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:52,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:52,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815566661] [2024-06-27 18:27:52,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815566661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:52,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:52,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:52,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900049211] [2024-06-27 18:27:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:52,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:52,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:52,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 445 transitions, 6544 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:52,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:52,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:52,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:54,172 INFO L124 PetriNetUnfolderBase]: 2377/4291 cut-off events. [2024-06-27 18:27:54,173 INFO L125 PetriNetUnfolderBase]: For 117033/117033 co-relation queries the response was YES. [2024-06-27 18:27:54,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26320 conditions, 4291 events. 2377/4291 cut-off events. For 117033/117033 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 28807 event pairs, 753 based on Foata normal form. 2/4060 useless extension candidates. Maximal degree in co-relation 26144. Up to 3864 conditions per place. [2024-06-27 18:27:54,278 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 396 selfloop transitions, 71 changer transitions 0/474 dead transitions. [2024-06-27 18:27:54,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 474 transitions, 7620 flow [2024-06-27 18:27:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:27:54,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:27:54,280 INFO L175 Difference]: Start difference. First operand has 366 places, 445 transitions, 6544 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:27:54,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 474 transitions, 7620 flow [2024-06-27 18:27:56,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 474 transitions, 7258 flow, removed 138 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:56,014 INFO L231 Difference]: Finished difference. Result has 369 places, 445 transitions, 6336 flow [2024-06-27 18:27:56,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6182, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6336, PETRI_PLACES=369, PETRI_TRANSITIONS=445} [2024-06-27 18:27:56,015 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 329 predicate places. [2024-06-27 18:27:56,015 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 445 transitions, 6336 flow [2024-06-27 18:27:56,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:56,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:56,016 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 18:27:56,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:27:56,016 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 18:27:56,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:56,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1082691414, now seen corresponding path program 2 times [2024-06-27 18:27:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551910632] [2024-06-27 18:27:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:57,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:57,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551910632] [2024-06-27 18:27:57,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551910632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:57,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:27:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206387467] [2024-06-27 18:27:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:57,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:27:57,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:27:57,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:27:57,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:27:57,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 445 transitions, 6336 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:57,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:57,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:27:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:59,253 INFO L124 PetriNetUnfolderBase]: 2387/4305 cut-off events. [2024-06-27 18:27:59,254 INFO L125 PetriNetUnfolderBase]: For 105596/105596 co-relation queries the response was YES. [2024-06-27 18:27:59,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26087 conditions, 4305 events. 2387/4305 cut-off events. For 105596/105596 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28857 event pairs, 753 based on Foata normal form. 1/4066 useless extension candidates. Maximal degree in co-relation 25910. Up to 3899 conditions per place. [2024-06-27 18:27:59,357 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 392 selfloop transitions, 77 changer transitions 0/476 dead transitions. [2024-06-27 18:27:59,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 476 transitions, 7494 flow [2024-06-27 18:27:59,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:59,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-27 18:27:59,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 18:27:59,358 INFO L175 Difference]: Start difference. First operand has 369 places, 445 transitions, 6336 flow. Second operand 11 states and 162 transitions. [2024-06-27 18:27:59,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 476 transitions, 7494 flow [2024-06-27 18:28:00,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 476 transitions, 7342 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:00,965 INFO L231 Difference]: Finished difference. Result has 371 places, 449 transitions, 6445 flow [2024-06-27 18:28:00,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6184, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6445, PETRI_PLACES=371, PETRI_TRANSITIONS=449} [2024-06-27 18:28:00,966 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 331 predicate places. [2024-06-27 18:28:00,966 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 449 transitions, 6445 flow [2024-06-27 18:28:00,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:00,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:00,967 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 18:28:00,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:28:00,967 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 18:28:00,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1638032235, now seen corresponding path program 2 times [2024-06-27 18:28:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:00,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706055522] [2024-06-27 18:28:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:02,083 INFO 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 18:28:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706055522] [2024-06-27 18:28:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706055522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:02,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:02,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890739969] [2024-06-27 18:28:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:02,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:02,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:02,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 449 transitions, 6445 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:02,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:02,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:02,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:03,892 INFO L124 PetriNetUnfolderBase]: 2523/4569 cut-off events. [2024-06-27 18:28:03,892 INFO L125 PetriNetUnfolderBase]: For 158024/158024 co-relation queries the response was YES. [2024-06-27 18:28:03,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28160 conditions, 4569 events. 2523/4569 cut-off events. For 158024/158024 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 31251 event pairs, 807 based on Foata normal form. 10/4340 useless extension candidates. Maximal degree in co-relation 27981. Up to 3931 conditions per place. [2024-06-27 18:28:03,994 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 416 selfloop transitions, 65 changer transitions 0/488 dead transitions. [2024-06-27 18:28:03,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 488 transitions, 7795 flow [2024-06-27 18:28:03,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:03,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:28:03,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-27 18:28:03,996 INFO L175 Difference]: Start difference. First operand has 371 places, 449 transitions, 6445 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:28:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 488 transitions, 7795 flow [2024-06-27 18:28:05,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 488 transitions, 7618 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:05,622 INFO L231 Difference]: Finished difference. Result has 373 places, 455 transitions, 6612 flow [2024-06-27 18:28:05,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6612, PETRI_PLACES=373, PETRI_TRANSITIONS=455} [2024-06-27 18:28:05,623 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 333 predicate places. [2024-06-27 18:28:05,623 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 455 transitions, 6612 flow [2024-06-27 18:28:05,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:05,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:05,623 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 18:28:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:28:05,623 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 18:28:05,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1616999313, now seen corresponding path program 10 times [2024-06-27 18:28:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591274914] [2024-06-27 18:28:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:05,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:06,747 INFO 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 18:28:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591274914] [2024-06-27 18:28:06,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591274914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:06,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:06,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872641744] [2024-06-27 18:28:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:06,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:06,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:06,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:06,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 455 transitions, 6612 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:06,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:06,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:06,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:08,662 INFO L124 PetriNetUnfolderBase]: 2552/4616 cut-off events. [2024-06-27 18:28:08,662 INFO L125 PetriNetUnfolderBase]: For 138732/138732 co-relation queries the response was YES. [2024-06-27 18:28:08,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28733 conditions, 4616 events. 2552/4616 cut-off events. For 138732/138732 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 31622 event pairs, 802 based on Foata normal form. 2/4368 useless extension candidates. Maximal degree in co-relation 28553. Up to 3958 conditions per place. [2024-06-27 18:28:08,767 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 379 selfloop transitions, 101 changer transitions 0/487 dead transitions. [2024-06-27 18:28:08,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 487 transitions, 7897 flow [2024-06-27 18:28:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:28:08,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-27 18:28:08,769 INFO L175 Difference]: Start difference. First operand has 373 places, 455 transitions, 6612 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:28:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 487 transitions, 7897 flow [2024-06-27 18:28:10,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 487 transitions, 7696 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:10,391 INFO L231 Difference]: Finished difference. Result has 375 places, 459 transitions, 6869 flow [2024-06-27 18:28:10,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6869, PETRI_PLACES=375, PETRI_TRANSITIONS=459} [2024-06-27 18:28:10,392 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 335 predicate places. [2024-06-27 18:28:10,392 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 459 transitions, 6869 flow [2024-06-27 18:28:10,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:10,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:10,393 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 18:28:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:28:10,393 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 18:28:10,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1616993733, now seen corresponding path program 11 times [2024-06-27 18:28:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878036830] [2024-06-27 18:28:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:11,466 INFO 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 18:28:11,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:11,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878036830] [2024-06-27 18:28:11,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878036830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:11,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:11,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:11,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204568064] [2024-06-27 18:28:11,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:11,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:11,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:11,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:11,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:11,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 459 transitions, 6869 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:11,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:11,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:11,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:12,947 INFO L124 PetriNetUnfolderBase]: 2568/4645 cut-off events. [2024-06-27 18:28:12,947 INFO L125 PetriNetUnfolderBase]: For 133846/133846 co-relation queries the response was YES. [2024-06-27 18:28:13,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29199 conditions, 4645 events. 2568/4645 cut-off events. For 133846/133846 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 31899 event pairs, 796 based on Foata normal form. 2/4397 useless extension candidates. Maximal degree in co-relation 29017. Up to 3942 conditions per place. [2024-06-27 18:28:13,019 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 380 selfloop transitions, 104 changer transitions 0/491 dead transitions. [2024-06-27 18:28:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 491 transitions, 8148 flow [2024-06-27 18:28:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:28:13,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-27 18:28:13,020 INFO L175 Difference]: Start difference. First operand has 375 places, 459 transitions, 6869 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:28:13,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 491 transitions, 8148 flow [2024-06-27 18:28:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 491 transitions, 7864 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:14,291 INFO L231 Difference]: Finished difference. Result has 378 places, 461 transitions, 6960 flow [2024-06-27 18:28:14,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6585, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6960, PETRI_PLACES=378, PETRI_TRANSITIONS=461} [2024-06-27 18:28:14,292 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 338 predicate places. [2024-06-27 18:28:14,292 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 461 transitions, 6960 flow [2024-06-27 18:28:14,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:14,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:14,292 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 18:28:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:28:14,293 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 18:28:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1816301103, now seen corresponding path program 12 times [2024-06-27 18:28:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333833656] [2024-06-27 18:28:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:15,144 INFO 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 18:28:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333833656] [2024-06-27 18:28:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333833656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538216657] [2024-06-27 18:28:15,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:15,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:15,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:15,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:15,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:15,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 461 transitions, 6960 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:15,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:15,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:15,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:16,618 INFO L124 PetriNetUnfolderBase]: 2584/4677 cut-off events. [2024-06-27 18:28:16,618 INFO L125 PetriNetUnfolderBase]: For 137827/137827 co-relation queries the response was YES. [2024-06-27 18:28:16,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29435 conditions, 4677 events. 2584/4677 cut-off events. For 137827/137827 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 32210 event pairs, 956 based on Foata normal form. 2/4427 useless extension candidates. Maximal degree in co-relation 29252. Up to 4290 conditions per place. [2024-06-27 18:28:16,690 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 448 selfloop transitions, 35 changer transitions 0/490 dead transitions. [2024-06-27 18:28:16,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 490 transitions, 8227 flow [2024-06-27 18:28:16,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:28:16,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-27 18:28:16,692 INFO L175 Difference]: Start difference. First operand has 378 places, 461 transitions, 6960 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:28:16,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 490 transitions, 8227 flow [2024-06-27 18:28:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 490 transitions, 7868 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:17,905 INFO L231 Difference]: Finished difference. Result has 380 places, 463 transitions, 6842 flow [2024-06-27 18:28:17,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6601, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6842, PETRI_PLACES=380, PETRI_TRANSITIONS=463} [2024-06-27 18:28:17,906 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-27 18:28:17,906 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 463 transitions, 6842 flow [2024-06-27 18:28:17,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:17,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:17,906 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 18:28:17,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:28:17,906 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 18:28:17,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1616849583, now seen corresponding path program 13 times [2024-06-27 18:28:17,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:17,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941438029] [2024-06-27 18:28:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:17,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:18,776 INFO 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 18:28:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941438029] [2024-06-27 18:28:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941438029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:18,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393451065] [2024-06-27 18:28:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:18,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:18,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:18,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 463 transitions, 6842 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:18,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:18,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:18,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:20,428 INFO L124 PetriNetUnfolderBase]: 2604/4709 cut-off events. [2024-06-27 18:28:20,429 INFO L125 PetriNetUnfolderBase]: For 140217/140217 co-relation queries the response was YES. [2024-06-27 18:28:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29471 conditions, 4709 events. 2604/4709 cut-off events. For 140217/140217 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 32406 event pairs, 817 based on Foata normal form. 2/4461 useless extension candidates. Maximal degree in co-relation 29287. Up to 4216 conditions per place. [2024-06-27 18:28:20,521 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 421 selfloop transitions, 71 changer transitions 0/499 dead transitions. [2024-06-27 18:28:20,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 499 transitions, 8148 flow [2024-06-27 18:28:20,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:28:20,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 18:28:20,523 INFO L175 Difference]: Start difference. First operand has 380 places, 463 transitions, 6842 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:28:20,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 499 transitions, 8148 flow [2024-06-27 18:28:22,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 499 transitions, 7923 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 18:28:22,212 INFO L231 Difference]: Finished difference. Result has 382 places, 465 transitions, 6934 flow [2024-06-27 18:28:22,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6617, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6934, PETRI_PLACES=382, PETRI_TRANSITIONS=465} [2024-06-27 18:28:22,213 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 342 predicate places. [2024-06-27 18:28:22,213 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 465 transitions, 6934 flow [2024-06-27 18:28:22,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:22,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:22,213 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 18:28:22,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:28:22,213 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 18:28:22,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1622571439, now seen corresponding path program 3 times [2024-06-27 18:28:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622113199] [2024-06-27 18:28:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:23,298 INFO 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 18:28:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622113199] [2024-06-27 18:28:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622113199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:23,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:23,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857810410] [2024-06-27 18:28:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:23,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:23,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 465 transitions, 6934 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:23,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:23,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:23,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:25,340 INFO L124 PetriNetUnfolderBase]: 2672/4840 cut-off events. [2024-06-27 18:28:25,340 INFO L125 PetriNetUnfolderBase]: For 189256/189256 co-relation queries the response was YES. [2024-06-27 18:28:25,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30531 conditions, 4840 events. 2672/4840 cut-off events. For 189256/189256 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 33619 event pairs, 854 based on Foata normal form. 10/4599 useless extension candidates. Maximal degree in co-relation 30346. Up to 4036 conditions per place. [2024-06-27 18:28:25,429 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 391 selfloop transitions, 100 changer transitions 0/498 dead transitions. [2024-06-27 18:28:25,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 498 transitions, 8251 flow [2024-06-27 18:28:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:28:25,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-27 18:28:25,431 INFO L175 Difference]: Start difference. First operand has 382 places, 465 transitions, 6934 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:28:25,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 498 transitions, 8251 flow [2024-06-27 18:28:27,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 498 transitions, 7955 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:27,279 INFO L231 Difference]: Finished difference. Result has 385 places, 466 transitions, 6971 flow [2024-06-27 18:28:27,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6638, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6971, PETRI_PLACES=385, PETRI_TRANSITIONS=466} [2024-06-27 18:28:27,280 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 345 predicate places. [2024-06-27 18:28:27,280 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 466 transitions, 6971 flow [2024-06-27 18:28:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:27,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:27,281 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 18:28:27,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:28:27,281 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:27,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1816295523, now seen corresponding path program 14 times [2024-06-27 18:28:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280765462] [2024-06-27 18:28:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:28,081 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 18:28:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280765462] [2024-06-27 18:28:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280765462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:28,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359322152] [2024-06-27 18:28:28,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:28,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:28,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:28,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:28,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:28,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 466 transitions, 6971 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:28,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:28,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:28,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:29,789 INFO L124 PetriNetUnfolderBase]: 2788/5060 cut-off events. [2024-06-27 18:28:29,789 INFO L125 PetriNetUnfolderBase]: For 237992/237992 co-relation queries the response was YES. [2024-06-27 18:28:29,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33715 conditions, 5060 events. 2788/5060 cut-off events. For 237992/237992 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 35649 event pairs, 1048 based on Foata normal form. 2/4808 useless extension candidates. Maximal degree in co-relation 33529. Up to 4448 conditions per place. [2024-06-27 18:28:29,861 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 457 selfloop transitions, 40 changer transitions 0/504 dead transitions. [2024-06-27 18:28:29,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 504 transitions, 8698 flow [2024-06-27 18:28:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:28:29,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 18:28:29,863 INFO L175 Difference]: Start difference. First operand has 385 places, 466 transitions, 6971 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:28:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 504 transitions, 8698 flow [2024-06-27 18:28:31,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 504 transitions, 8409 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:31,483 INFO L231 Difference]: Finished difference. Result has 388 places, 470 transitions, 7115 flow [2024-06-27 18:28:31,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6682, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7115, PETRI_PLACES=388, PETRI_TRANSITIONS=470} [2024-06-27 18:28:31,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 348 predicate places. [2024-06-27 18:28:31,484 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 470 transitions, 7115 flow [2024-06-27 18:28:31,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:31,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:31,484 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 18:28:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:28:31,484 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1816510849, now seen corresponding path program 4 times [2024-06-27 18:28:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363210659] [2024-06-27 18:28:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:32,367 INFO 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 18:28:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363210659] [2024-06-27 18:28:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363210659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:32,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:32,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773313881] [2024-06-27 18:28:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:32,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:32,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:32,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 470 transitions, 7115 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:32,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:32,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:32,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:34,312 INFO L124 PetriNetUnfolderBase]: 2856/5190 cut-off events. [2024-06-27 18:28:34,312 INFO L125 PetriNetUnfolderBase]: For 277311/277311 co-relation queries the response was YES. [2024-06-27 18:28:34,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34469 conditions, 5190 events. 2856/5190 cut-off events. For 277311/277311 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 36878 event pairs, 1092 based on Foata normal form. 10/4941 useless extension candidates. Maximal degree in co-relation 34282. Up to 4664 conditions per place. [2024-06-27 18:28:34,406 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 462 selfloop transitions, 36 changer transitions 0/505 dead transitions. [2024-06-27 18:28:34,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 505 transitions, 8460 flow [2024-06-27 18:28:34,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:28:34,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:28:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-27 18:28:34,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:28:34,408 INFO L175 Difference]: Start difference. First operand has 388 places, 470 transitions, 7115 flow. Second operand 12 states and 180 transitions. [2024-06-27 18:28:34,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 505 transitions, 8460 flow [2024-06-27 18:28:36,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 505 transitions, 8234 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:36,222 INFO L231 Difference]: Finished difference. Result has 393 places, 471 transitions, 7099 flow [2024-06-27 18:28:36,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7099, PETRI_PLACES=393, PETRI_TRANSITIONS=471} [2024-06-27 18:28:36,222 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 353 predicate places. [2024-06-27 18:28:36,223 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 471 transitions, 7099 flow [2024-06-27 18:28:36,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:36,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:36,223 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 18:28:36,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:28:36,223 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:36,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1823652753, now seen corresponding path program 15 times [2024-06-27 18:28:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:36,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252226911] [2024-06-27 18:28:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:37,073 INFO 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 18:28:37,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:37,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252226911] [2024-06-27 18:28:37,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252226911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:37,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:37,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:37,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28550735] [2024-06-27 18:28:37,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:37,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:37,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:37,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:37,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:37,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:37,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 471 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:37,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:37,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:37,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:38,740 INFO L124 PetriNetUnfolderBase]: 2840/5162 cut-off events. [2024-06-27 18:28:38,740 INFO L125 PetriNetUnfolderBase]: For 231943/231943 co-relation queries the response was YES. [2024-06-27 18:28:38,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32907 conditions, 5162 events. 2840/5162 cut-off events. For 231943/231943 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 36659 event pairs, 1080 based on Foata normal form. 12/4915 useless extension candidates. Maximal degree in co-relation 32718. Up to 4636 conditions per place. [2024-06-27 18:28:38,811 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 461 selfloop transitions, 34 changer transitions 0/502 dead transitions. [2024-06-27 18:28:38,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 502 transitions, 8290 flow [2024-06-27 18:28:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:28:38,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-27 18:28:38,813 INFO L175 Difference]: Start difference. First operand has 393 places, 471 transitions, 7099 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:28:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 502 transitions, 8290 flow [2024-06-27 18:28:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 502 transitions, 8020 flow, removed 102 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:40,201 INFO L231 Difference]: Finished difference. Result has 394 places, 471 transitions, 6903 flow [2024-06-27 18:28:40,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6829, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6903, PETRI_PLACES=394, PETRI_TRANSITIONS=471} [2024-06-27 18:28:40,201 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 354 predicate places. [2024-06-27 18:28:40,201 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 471 transitions, 6903 flow [2024-06-27 18:28:40,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:40,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:40,202 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 18:28:40,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:28:40,202 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:40,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1425453575, now seen corresponding path program 5 times [2024-06-27 18:28:40,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:40,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333371711] [2024-06-27 18:28:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:28:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:41,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333371711] [2024-06-27 18:28:41,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333371711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:41,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:41,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779937348] [2024-06-27 18:28:41,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:41,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:41,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:41,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:41,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 471 transitions, 6903 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:41,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:41,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:41,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:42,784 INFO L124 PetriNetUnfolderBase]: 2908/5292 cut-off events. [2024-06-27 18:28:42,784 INFO L125 PetriNetUnfolderBase]: For 206231/206231 co-relation queries the response was YES. [2024-06-27 18:28:42,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 5292 events. 2908/5292 cut-off events. For 206231/206231 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 37833 event pairs, 1114 based on Foata normal form. 10/5044 useless extension candidates. Maximal degree in co-relation 32929. Up to 4634 conditions per place. [2024-06-27 18:28:42,879 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 464 selfloop transitions, 35 changer transitions 0/506 dead transitions. [2024-06-27 18:28:42,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 506 transitions, 8252 flow [2024-06-27 18:28:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:28:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:28:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-27 18:28:42,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41435185185185186 [2024-06-27 18:28:42,881 INFO L175 Difference]: Start difference. First operand has 394 places, 471 transitions, 6903 flow. Second operand 12 states and 179 transitions. [2024-06-27 18:28:42,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 506 transitions, 8252 flow [2024-06-27 18:28:44,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 506 transitions, 8170 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 18:28:44,540 INFO L231 Difference]: Finished difference. Result has 396 places, 472 transitions, 7032 flow [2024-06-27 18:28:44,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6821, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7032, PETRI_PLACES=396, PETRI_TRANSITIONS=472} [2024-06-27 18:28:44,541 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 356 predicate places. [2024-06-27 18:28:44,541 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 472 transitions, 7032 flow [2024-06-27 18:28:44,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:44,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:44,541 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 18:28:44,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:28:44,542 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:44,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2062189199, now seen corresponding path program 6 times [2024-06-27 18:28:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:44,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273179430] [2024-06-27 18:28:44,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:45,126 INFO 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 18:28:45,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:45,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273179430] [2024-06-27 18:28:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273179430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:45,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:45,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:45,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961611284] [2024-06-27 18:28:45,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:45,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:45,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:45,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:45,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 472 transitions, 7032 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:45,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:45,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:45,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:46,966 INFO L124 PetriNetUnfolderBase]: 3003/5479 cut-off events. [2024-06-27 18:28:46,966 INFO L125 PetriNetUnfolderBase]: For 257188/257188 co-relation queries the response was YES. [2024-06-27 18:28:47,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35425 conditions, 5479 events. 3003/5479 cut-off events. For 257188/257188 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 39624 event pairs, 1137 based on Foata normal form. 8/5233 useless extension candidates. Maximal degree in co-relation 35234. Up to 4446 conditions per place. [2024-06-27 18:28:47,038 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 467 selfloop transitions, 37 changer transitions 0/511 dead transitions. [2024-06-27 18:28:47,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 511 transitions, 8749 flow [2024-06-27 18:28:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:28:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:28:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:28:47,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 18:28:47,040 INFO L175 Difference]: Start difference. First operand has 396 places, 472 transitions, 7032 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:28:47,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 511 transitions, 8749 flow [2024-06-27 18:28:48,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 511 transitions, 8580 flow, removed 51 selfloop flow, removed 11 redundant places. [2024-06-27 18:28:48,639 INFO L231 Difference]: Finished difference. Result has 396 places, 474 transitions, 7209 flow [2024-06-27 18:28:48,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7209, PETRI_PLACES=396, PETRI_TRANSITIONS=474} [2024-06-27 18:28:48,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 356 predicate places. [2024-06-27 18:28:48,640 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 474 transitions, 7209 flow [2024-06-27 18:28:48,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:48,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:48,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:28:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:28:48,641 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:48,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:48,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2008933855, now seen corresponding path program 16 times [2024-06-27 18:28:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:48,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741657080] [2024-06-27 18:28:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:49,571 INFO 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 18:28:49,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741657080] [2024-06-27 18:28:49,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741657080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:49,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:49,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856662265] [2024-06-27 18:28:49,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:49,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:49,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:49,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:49,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:49,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 474 transitions, 7209 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:49,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:49,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:49,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:51,343 INFO L124 PetriNetUnfolderBase]: 3023/5514 cut-off events. [2024-06-27 18:28:51,343 INFO L125 PetriNetUnfolderBase]: For 223161/223161 co-relation queries the response was YES. [2024-06-27 18:28:51,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35563 conditions, 5514 events. 3023/5514 cut-off events. For 223161/223161 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39872 event pairs, 854 based on Foata normal form. 2/5253 useless extension candidates. Maximal degree in co-relation 35372. Up to 4334 conditions per place. [2024-06-27 18:28:51,420 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 398 selfloop transitions, 105 changer transitions 0/510 dead transitions. [2024-06-27 18:28:51,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 510 transitions, 8541 flow [2024-06-27 18:28:51,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:51,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:28:51,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:28:51,421 INFO L175 Difference]: Start difference. First operand has 396 places, 474 transitions, 7209 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:28:51,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 510 transitions, 8541 flow [2024-06-27 18:28:53,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 510 transitions, 8387 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 18:28:53,521 INFO L231 Difference]: Finished difference. Result has 399 places, 476 transitions, 7477 flow [2024-06-27 18:28:53,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7055, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7477, PETRI_PLACES=399, PETRI_TRANSITIONS=476} [2024-06-27 18:28:53,522 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 359 predicate places. [2024-06-27 18:28:53,522 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 476 transitions, 7477 flow [2024-06-27 18:28:53,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:53,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:53,522 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 18:28:53,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:28:53,522 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:53,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1580261778, now seen corresponding path program 3 times [2024-06-27 18:28:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338336240] [2024-06-27 18:28:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:53,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:54,487 INFO 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 18:28:54,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:54,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338336240] [2024-06-27 18:28:54,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338336240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:54,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:54,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668950491] [2024-06-27 18:28:54,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:54,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:54,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:54,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 476 transitions, 7477 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:54,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:54,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:28:56,091 INFO L124 PetriNetUnfolderBase]: 3062/5570 cut-off events. [2024-06-27 18:28:56,092 INFO L125 PetriNetUnfolderBase]: For 203467/203467 co-relation queries the response was YES. [2024-06-27 18:28:56,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36331 conditions, 5570 events. 3062/5570 cut-off events. For 203467/203467 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 40260 event pairs, 1118 based on Foata normal form. 1/5284 useless extension candidates. Maximal degree in co-relation 36138. Up to 5132 conditions per place. [2024-06-27 18:28:56,177 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 438 selfloop transitions, 86 changer transitions 0/531 dead transitions. [2024-06-27 18:28:56,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 531 transitions, 9247 flow [2024-06-27 18:28:56,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:28:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:28:56,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:28:56,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:28:56,178 INFO L175 Difference]: Start difference. First operand has 399 places, 476 transitions, 7477 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:28:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 531 transitions, 9247 flow [2024-06-27 18:28:58,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 531 transitions, 8879 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 18:28:58,009 INFO L231 Difference]: Finished difference. Result has 403 places, 505 transitions, 7976 flow [2024-06-27 18:28:58,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7109, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7976, PETRI_PLACES=403, PETRI_TRANSITIONS=505} [2024-06-27 18:28:58,009 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 363 predicate places. [2024-06-27 18:28:58,009 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 505 transitions, 7976 flow [2024-06-27 18:28:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:28:58,010 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 18:28:58,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:28:58,010 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:28:58,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:28:58,010 INFO L85 PathProgramCache]: Analyzing trace with hash 507566041, now seen corresponding path program 17 times [2024-06-27 18:28:58,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:28:58,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269079645] [2024-06-27 18:28:58,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:28:58,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:28:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:58,841 INFO 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 18:28:58,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:58,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269079645] [2024-06-27 18:28:58,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269079645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:28:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092360672] [2024-06-27 18:28:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:58,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:28:58,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:28:58,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:28:58,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:28:58,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 505 transitions, 7976 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:28:58,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:58,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:28:58,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:00,595 INFO L124 PetriNetUnfolderBase]: 3078/5605 cut-off events. [2024-06-27 18:29:00,595 INFO L125 PetriNetUnfolderBase]: For 209230/209230 co-relation queries the response was YES. [2024-06-27 18:29:00,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36404 conditions, 5605 events. 3078/5605 cut-off events. For 209230/209230 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 40679 event pairs, 1160 based on Foata normal form. 2/5332 useless extension candidates. Maximal degree in co-relation 36208. Up to 4934 conditions per place. [2024-06-27 18:29:00,682 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 397 selfloop transitions, 129 changer transitions 0/533 dead transitions. [2024-06-27 18:29:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 533 transitions, 9346 flow [2024-06-27 18:29:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:29:00,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 18:29:00,683 INFO L175 Difference]: Start difference. First operand has 403 places, 505 transitions, 7976 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:29:00,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 533 transitions, 9346 flow [2024-06-27 18:29:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 533 transitions, 9020 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:02,517 INFO L231 Difference]: Finished difference. Result has 404 places, 507 transitions, 8129 flow [2024-06-27 18:29:02,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7650, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8129, PETRI_PLACES=404, PETRI_TRANSITIONS=507} [2024-06-27 18:29:02,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 364 predicate places. [2024-06-27 18:29:02,518 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 507 transitions, 8129 flow [2024-06-27 18:29:02,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:02,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:02,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:29:02,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:29:02,519 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:02,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:02,519 INFO L85 PathProgramCache]: Analyzing trace with hash 551077829, now seen corresponding path program 18 times [2024-06-27 18:29:02,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:02,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013933905] [2024-06-27 18:29:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:03,418 INFO 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 18:29:03,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:03,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013933905] [2024-06-27 18:29:03,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013933905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:03,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:03,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031387134] [2024-06-27 18:29:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:03,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:03,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 507 transitions, 8129 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:05,192 INFO L124 PetriNetUnfolderBase]: 3098/5639 cut-off events. [2024-06-27 18:29:05,192 INFO L125 PetriNetUnfolderBase]: For 221439/221439 co-relation queries the response was YES. [2024-06-27 18:29:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37249 conditions, 5639 events. 3098/5639 cut-off events. For 221439/221439 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 40954 event pairs, 1081 based on Foata normal form. 2/5355 useless extension candidates. Maximal degree in co-relation 37052. Up to 4844 conditions per place. [2024-06-27 18:29:05,277 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 451 selfloop transitions, 84 changer transitions 0/542 dead transitions. [2024-06-27 18:29:05,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 542 transitions, 9535 flow [2024-06-27 18:29:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:29:05,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:29:05,279 INFO L175 Difference]: Start difference. First operand has 404 places, 507 transitions, 8129 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:29:05,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 542 transitions, 9535 flow [2024-06-27 18:29:06,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 542 transitions, 9118 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:06,930 INFO L231 Difference]: Finished difference. Result has 405 places, 509 transitions, 8088 flow [2024-06-27 18:29:06,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7712, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8088, PETRI_PLACES=405, PETRI_TRANSITIONS=509} [2024-06-27 18:29:06,931 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 365 predicate places. [2024-06-27 18:29:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 509 transitions, 8088 flow [2024-06-27 18:29:06,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:06,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:06,931 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 18:29:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:29:06,931 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:06,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1210783245, now seen corresponding path program 19 times [2024-06-27 18:29:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632387071] [2024-06-27 18:29:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:07,719 INFO 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 18:29:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632387071] [2024-06-27 18:29:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632387071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502496281] [2024-06-27 18:29:07,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:07,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:07,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:07,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 509 transitions, 8088 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:07,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:07,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:07,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:09,466 INFO L124 PetriNetUnfolderBase]: 3114/5669 cut-off events. [2024-06-27 18:29:09,466 INFO L125 PetriNetUnfolderBase]: For 224115/224115 co-relation queries the response was YES. [2024-06-27 18:29:09,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37432 conditions, 5669 events. 3114/5669 cut-off events. For 224115/224115 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41271 event pairs, 1134 based on Foata normal form. 2/5398 useless extension candidates. Maximal degree in co-relation 37235. Up to 4818 conditions per place. [2024-06-27 18:29:09,557 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 402 selfloop transitions, 130 changer transitions 0/539 dead transitions. [2024-06-27 18:29:09,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 539 transitions, 9482 flow [2024-06-27 18:29:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:29:09,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:29:09,558 INFO L175 Difference]: Start difference. First operand has 405 places, 509 transitions, 8088 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:29:09,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 539 transitions, 9482 flow [2024-06-27 18:29:11,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 539 transitions, 9148 flow, removed 89 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:11,518 INFO L231 Difference]: Finished difference. Result has 407 places, 511 transitions, 8226 flow [2024-06-27 18:29:11,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7754, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8226, PETRI_PLACES=407, PETRI_TRANSITIONS=511} [2024-06-27 18:29:11,518 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-27 18:29:11,518 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 511 transitions, 8226 flow [2024-06-27 18:29:11,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:11,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:11,519 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 18:29:11,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:29:11,519 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:11,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:11,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1536648267, now seen corresponding path program 7 times [2024-06-27 18:29:11,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049814599] [2024-06-27 18:29:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:12,194 INFO 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 18:29:12,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:12,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049814599] [2024-06-27 18:29:12,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049814599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:12,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:12,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:12,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389442218] [2024-06-27 18:29:12,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:12,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:12,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:12,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:12,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 511 transitions, 8226 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:12,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:12,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:12,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:13,974 INFO L124 PetriNetUnfolderBase]: 3214/5851 cut-off events. [2024-06-27 18:29:13,975 INFO L125 PetriNetUnfolderBase]: For 283681/283681 co-relation queries the response was YES. [2024-06-27 18:29:14,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38820 conditions, 5851 events. 3214/5851 cut-off events. For 283681/283681 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 42824 event pairs, 1135 based on Foata normal form. 10/5586 useless extension candidates. Maximal degree in co-relation 38622. Up to 4661 conditions per place. [2024-06-27 18:29:14,065 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 431 selfloop transitions, 111 changer transitions 0/549 dead transitions. [2024-06-27 18:29:14,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 549 transitions, 9712 flow [2024-06-27 18:29:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:29:14,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-27 18:29:14,067 INFO L175 Difference]: Start difference. First operand has 407 places, 511 transitions, 8226 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:29:14,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 549 transitions, 9712 flow [2024-06-27 18:29:16,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 549 transitions, 9272 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:16,066 INFO L231 Difference]: Finished difference. Result has 410 places, 514 transitions, 8225 flow [2024-06-27 18:29:16,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7794, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8225, PETRI_PLACES=410, PETRI_TRANSITIONS=514} [2024-06-27 18:29:16,067 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 370 predicate places. [2024-06-27 18:29:16,067 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 514 transitions, 8225 flow [2024-06-27 18:29:16,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:16,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:16,067 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 18:29:16,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:29:16,067 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:16,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1087710311, now seen corresponding path program 20 times [2024-06-27 18:29:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299385469] [2024-06-27 18:29:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:16,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:16,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:16,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:16,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299385469] [2024-06-27 18:29:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299385469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:16,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695320881] [2024-06-27 18:29:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:16,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:16,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:16,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:16,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:16,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 514 transitions, 8225 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:16,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:16,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:16,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:18,559 INFO L124 PetriNetUnfolderBase]: 3230/5879 cut-off events. [2024-06-27 18:29:18,560 INFO L125 PetriNetUnfolderBase]: For 247634/247634 co-relation queries the response was YES. [2024-06-27 18:29:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38904 conditions, 5879 events. 3230/5879 cut-off events. For 247634/247634 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43084 event pairs, 1138 based on Foata normal form. 2/5591 useless extension candidates. Maximal degree in co-relation 38705. Up to 5359 conditions per place. [2024-06-27 18:29:18,655 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 458 selfloop transitions, 78 changer transitions 0/543 dead transitions. [2024-06-27 18:29:18,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 543 transitions, 9704 flow [2024-06-27 18:29:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:29:18,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 18:29:18,657 INFO L175 Difference]: Start difference. First operand has 410 places, 514 transitions, 8225 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:29:18,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 543 transitions, 9704 flow [2024-06-27 18:29:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 543 transitions, 9417 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:20,699 INFO L231 Difference]: Finished difference. Result has 412 places, 518 transitions, 8385 flow [2024-06-27 18:29:20,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7938, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8385, PETRI_PLACES=412, PETRI_TRANSITIONS=518} [2024-06-27 18:29:20,700 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 372 predicate places. [2024-06-27 18:29:20,700 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 518 transitions, 8385 flow [2024-06-27 18:29:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:20,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:20,701 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 18:29:20,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:29:20,701 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:20,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:20,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1087715891, now seen corresponding path program 21 times [2024-06-27 18:29:20,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:20,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224038740] [2024-06-27 18:29:20,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:20,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:21,538 INFO 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 18:29:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224038740] [2024-06-27 18:29:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224038740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310885389] [2024-06-27 18:29:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:21,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:21,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 518 transitions, 8385 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:21,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:21,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:21,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:23,380 INFO L124 PetriNetUnfolderBase]: 3246/5909 cut-off events. [2024-06-27 18:29:23,380 INFO L125 PetriNetUnfolderBase]: For 238422/238422 co-relation queries the response was YES. [2024-06-27 18:29:23,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39039 conditions, 5909 events. 3246/5909 cut-off events. For 238422/238422 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 43435 event pairs, 1114 based on Foata normal form. 2/5621 useless extension candidates. Maximal degree in co-relation 38838. Up to 5299 conditions per place. [2024-06-27 18:29:23,482 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 456 selfloop transitions, 84 changer transitions 0/547 dead transitions. [2024-06-27 18:29:23,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 547 transitions, 9809 flow [2024-06-27 18:29:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:29:23,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:29:23,483 INFO L175 Difference]: Start difference. First operand has 412 places, 518 transitions, 8385 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:29:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 547 transitions, 9809 flow [2024-06-27 18:29:25,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 547 transitions, 9467 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-06-27 18:29:25,695 INFO L231 Difference]: Finished difference. Result has 416 places, 520 transitions, 8427 flow [2024-06-27 18:29:25,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8043, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8427, PETRI_PLACES=416, PETRI_TRANSITIONS=520} [2024-06-27 18:29:25,695 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 376 predicate places. [2024-06-27 18:29:25,695 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 520 transitions, 8427 flow [2024-06-27 18:29:25,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:25,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:25,697 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 18:29:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:29:25,697 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:25,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash -801747731, now seen corresponding path program 22 times [2024-06-27 18:29:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268940159] [2024-06-27 18:29:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:25,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:26,487 INFO 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 18:29:26,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:26,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268940159] [2024-06-27 18:29:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268940159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:26,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:26,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379830130] [2024-06-27 18:29:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:26,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:26,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 520 transitions, 8427 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:26,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:26,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:26,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:28,772 INFO L124 PetriNetUnfolderBase]: 3330/6070 cut-off events. [2024-06-27 18:29:28,772 INFO L125 PetriNetUnfolderBase]: For 319479/319479 co-relation queries the response was YES. [2024-06-27 18:29:28,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40684 conditions, 6070 events. 3330/6070 cut-off events. For 319479/319479 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 44983 event pairs, 1317 based on Foata normal form. 12/5792 useless extension candidates. Maximal degree in co-relation 40481. Up to 5294 conditions per place. [2024-06-27 18:29:28,925 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 494 selfloop transitions, 50 changer transitions 0/551 dead transitions. [2024-06-27 18:29:28,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 551 transitions, 9918 flow [2024-06-27 18:29:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:29:28,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:29:28,930 INFO L175 Difference]: Start difference. First operand has 416 places, 520 transitions, 8427 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:29:28,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 551 transitions, 9918 flow [2024-06-27 18:29:31,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 551 transitions, 9554 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:31,697 INFO L231 Difference]: Finished difference. Result has 418 places, 522 transitions, 8385 flow [2024-06-27 18:29:31,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8063, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8385, PETRI_PLACES=418, PETRI_TRANSITIONS=522} [2024-06-27 18:29:31,699 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 378 predicate places. [2024-06-27 18:29:31,700 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 522 transitions, 8385 flow [2024-06-27 18:29:31,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:31,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:31,701 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 18:29:31,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:29:31,702 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:31,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:31,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1087860041, now seen corresponding path program 23 times [2024-06-27 18:29:31,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:31,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913484298] [2024-06-27 18:29:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:31,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:32,569 INFO 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 18:29:32,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:32,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913484298] [2024-06-27 18:29:32,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913484298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:32,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:32,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:32,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006029824] [2024-06-27 18:29:32,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:32,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:32,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:32,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:32,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:32,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:32,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 522 transitions, 8385 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:32,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:32,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:32,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:34,597 INFO L124 PetriNetUnfolderBase]: 3350/6104 cut-off events. [2024-06-27 18:29:34,598 INFO L125 PetriNetUnfolderBase]: For 275305/275305 co-relation queries the response was YES. [2024-06-27 18:29:34,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40987 conditions, 6104 events. 3350/6104 cut-off events. For 275305/275305 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 45167 event pairs, 1140 based on Foata normal form. 2/5812 useless extension candidates. Maximal degree in co-relation 40783. Up to 5465 conditions per place. [2024-06-27 18:29:34,705 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 470 selfloop transitions, 79 changer transitions 0/556 dead transitions. [2024-06-27 18:29:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 556 transitions, 9845 flow [2024-06-27 18:29:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:29:34,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:29:34,706 INFO L175 Difference]: Start difference. First operand has 418 places, 522 transitions, 8385 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:29:34,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 556 transitions, 9845 flow [2024-06-27 18:29:37,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 556 transitions, 9530 flow, removed 98 selfloop flow, removed 9 redundant places. [2024-06-27 18:29:37,299 INFO L231 Difference]: Finished difference. Result has 419 places, 524 transitions, 8452 flow [2024-06-27 18:29:37,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8074, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8452, PETRI_PLACES=419, PETRI_TRANSITIONS=524} [2024-06-27 18:29:37,300 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 379 predicate places. [2024-06-27 18:29:37,300 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 524 transitions, 8452 flow [2024-06-27 18:29:37,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:37,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:37,301 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 18:29:37,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:29:37,301 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:37,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -880780165, now seen corresponding path program 8 times [2024-06-27 18:29:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:37,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614277071] [2024-06-27 18:29:37,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:37,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:37,923 INFO 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 18:29:37,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:37,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614277071] [2024-06-27 18:29:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614277071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:37,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:29:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589204251] [2024-06-27 18:29:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:29:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:37,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:29:37,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:29:38,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:38,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 524 transitions, 8452 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:38,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:38,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:38,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:40,591 INFO L124 PetriNetUnfolderBase]: 3502/6396 cut-off events. [2024-06-27 18:29:40,592 INFO L125 PetriNetUnfolderBase]: For 392568/392568 co-relation queries the response was YES. [2024-06-27 18:29:40,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44080 conditions, 6396 events. 3502/6396 cut-off events. For 392568/392568 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 47898 event pairs, 1318 based on Foata normal form. 8/6123 useless extension candidates. Maximal degree in co-relation 43876. Up to 4777 conditions per place. [2024-06-27 18:29:40,711 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 502 selfloop transitions, 53 changer transitions 0/562 dead transitions. [2024-06-27 18:29:40,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 562 transitions, 10373 flow [2024-06-27 18:29:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:29:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 18:29:40,713 INFO L175 Difference]: Start difference. First operand has 419 places, 524 transitions, 8452 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:29:40,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 562 transitions, 10373 flow [2024-06-27 18:29:44,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 562 transitions, 10021 flow, removed 100 selfloop flow, removed 8 redundant places. [2024-06-27 18:29:44,585 INFO L231 Difference]: Finished difference. Result has 421 places, 526 transitions, 8514 flow [2024-06-27 18:29:44,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8100, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8514, PETRI_PLACES=421, PETRI_TRANSITIONS=526} [2024-06-27 18:29:44,586 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 381 predicate places. [2024-06-27 18:29:44,586 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 526 transitions, 8514 flow [2024-06-27 18:29:44,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:44,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:44,586 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 18:29:44,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:29:44,587 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:44,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -881048935, now seen corresponding path program 9 times [2024-06-27 18:29:44,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:44,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109701852] [2024-06-27 18:29:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:44,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:45,510 INFO 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 18:29:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109701852] [2024-06-27 18:29:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109701852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:45,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:45,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:45,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36965264] [2024-06-27 18:29:45,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:45,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:45,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:45,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 526 transitions, 8514 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:45,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:45,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:45,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:48,169 INFO L124 PetriNetUnfolderBase]: 3606/6597 cut-off events. [2024-06-27 18:29:48,169 INFO L125 PetriNetUnfolderBase]: For 472669/472669 co-relation queries the response was YES. [2024-06-27 18:29:48,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45571 conditions, 6597 events. 3606/6597 cut-off events. For 472669/472669 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 49910 event pairs, 1467 based on Foata normal form. 16/6322 useless extension candidates. Maximal degree in co-relation 45366. Up to 5464 conditions per place. [2024-06-27 18:29:48,311 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 502 selfloop transitions, 51 changer transitions 0/560 dead transitions. [2024-06-27 18:29:48,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 560 transitions, 10111 flow [2024-06-27 18:29:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:29:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:29:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:29:48,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-27 18:29:48,313 INFO L175 Difference]: Start difference. First operand has 421 places, 526 transitions, 8514 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:29:48,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 560 transitions, 10111 flow [2024-06-27 18:29:52,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 560 transitions, 9922 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-27 18:29:52,385 INFO L231 Difference]: Finished difference. Result has 425 places, 528 transitions, 8726 flow [2024-06-27 18:29:52,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8327, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8726, PETRI_PLACES=425, PETRI_TRANSITIONS=528} [2024-06-27 18:29:52,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 385 predicate places. [2024-06-27 18:29:52,400 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 528 transitions, 8726 flow [2024-06-27 18:29:52,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:52,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:29:52,401 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 18:29:52,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:29:52,401 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:29:52,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:29:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash -888408521, now seen corresponding path program 24 times [2024-06-27 18:29:52,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:29:52,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572905670] [2024-06-27 18:29:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:29:52,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:29:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:29:53,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:29:53,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:29:53,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572905670] [2024-06-27 18:29:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572905670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:29:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:29:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:29:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457883197] [2024-06-27 18:29:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:29:53,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:29:53,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:29:53,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:29:53,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:29:53,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:29:53,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 528 transitions, 8726 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:29:53,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:29:53,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:29:53,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:29:56,692 INFO L124 PetriNetUnfolderBase]: 3603/6588 cut-off events. [2024-06-27 18:29:56,692 INFO L125 PetriNetUnfolderBase]: For 367815/367815 co-relation queries the response was YES. [2024-06-27 18:29:56,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45003 conditions, 6588 events. 3603/6588 cut-off events. For 367815/367815 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 49935 event pairs, 1490 based on Foata normal form. 2/6287 useless extension candidates. Maximal degree in co-relation 44797. Up to 6069 conditions per place. [2024-06-27 18:29:56,854 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 496 selfloop transitions, 52 changer transitions 0/555 dead transitions. [2024-06-27 18:29:56,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 555 transitions, 10169 flow [2024-06-27 18:29:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:29:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:29:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:29:56,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:29:56,856 INFO L175 Difference]: Start difference. First operand has 425 places, 528 transitions, 8726 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:29:56,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 555 transitions, 10169 flow [2024-06-27 18:30:00,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 555 transitions, 9876 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:00,859 INFO L231 Difference]: Finished difference. Result has 426 places, 530 transitions, 8763 flow [2024-06-27 18:30:00,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8433, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8763, PETRI_PLACES=426, PETRI_TRANSITIONS=530} [2024-06-27 18:30:00,859 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 386 predicate places. [2024-06-27 18:30:00,860 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 530 transitions, 8763 flow [2024-06-27 18:30:00,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:00,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:00,860 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 18:30:00,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:30:00,860 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:00,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -888414101, now seen corresponding path program 25 times [2024-06-27 18:30:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860484965] [2024-06-27 18:30:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:00,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:01,811 INFO 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 18:30:01,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:01,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860484965] [2024-06-27 18:30:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860484965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625612592] [2024-06-27 18:30:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:01,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:01,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 530 transitions, 8763 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:01,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:01,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:01,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:04,507 INFO L124 PetriNetUnfolderBase]: 3619/6619 cut-off events. [2024-06-27 18:30:04,508 INFO L125 PetriNetUnfolderBase]: For 346333/346333 co-relation queries the response was YES. [2024-06-27 18:30:04,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44894 conditions, 6619 events. 3619/6619 cut-off events. For 346333/346333 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 50172 event pairs, 1455 based on Foata normal form. 2/6327 useless extension candidates. Maximal degree in co-relation 44687. Up to 5713 conditions per place. [2024-06-27 18:30:04,662 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 494 selfloop transitions, 62 changer transitions 0/563 dead transitions. [2024-06-27 18:30:04,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 563 transitions, 10284 flow [2024-06-27 18:30:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:04,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:30:04,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:30:04,664 INFO L175 Difference]: Start difference. First operand has 426 places, 530 transitions, 8763 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:30:04,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 563 transitions, 10284 flow [2024-06-27 18:30:09,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 563 transitions, 9990 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:09,286 INFO L231 Difference]: Finished difference. Result has 428 places, 532 transitions, 8819 flow [2024-06-27 18:30:09,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8469, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8819, PETRI_PLACES=428, PETRI_TRANSITIONS=532} [2024-06-27 18:30:09,286 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 388 predicate places. [2024-06-27 18:30:09,286 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 532 transitions, 8819 flow [2024-06-27 18:30:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:09,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:09,287 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 18:30:09,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:30:09,287 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:09,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1082138185, now seen corresponding path program 10 times [2024-06-27 18:30:09,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:09,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95853890] [2024-06-27 18:30:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:10,380 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 18:30:10,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95853890] [2024-06-27 18:30:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95853890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:10,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:10,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452239396] [2024-06-27 18:30:10,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:10,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:10,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:10,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 532 transitions, 8819 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:10,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:10,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:10,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:13,265 INFO L124 PetriNetUnfolderBase]: 3723/6822 cut-off events. [2024-06-27 18:30:13,266 INFO L125 PetriNetUnfolderBase]: For 414044/414044 co-relation queries the response was YES. [2024-06-27 18:30:13,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46327 conditions, 6822 events. 3723/6822 cut-off events. For 414044/414044 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 51997 event pairs, 1413 based on Foata normal form. 10/6530 useless extension candidates. Maximal degree in co-relation 46119. Up to 6036 conditions per place. [2024-06-27 18:30:13,408 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 479 selfloop transitions, 80 changer transitions 0/566 dead transitions. [2024-06-27 18:30:13,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 566 transitions, 10335 flow [2024-06-27 18:30:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:30:13,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:30:13,409 INFO L175 Difference]: Start difference. First operand has 428 places, 532 transitions, 8819 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:30:13,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 566 transitions, 10335 flow [2024-06-27 18:30:17,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 566 transitions, 10002 flow, removed 106 selfloop flow, removed 9 redundant places. [2024-06-27 18:30:17,902 INFO L231 Difference]: Finished difference. Result has 430 places, 534 transitions, 8842 flow [2024-06-27 18:30:17,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8486, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8842, PETRI_PLACES=430, PETRI_TRANSITIONS=534} [2024-06-27 18:30:17,903 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 390 predicate places. [2024-06-27 18:30:17,903 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 534 transitions, 8842 flow [2024-06-27 18:30:17,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:17,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:17,904 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 18:30:17,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:30:17,904 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:17,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1715126881, now seen corresponding path program 11 times [2024-06-27 18:30:17,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:17,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839910594] [2024-06-27 18:30:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:18,822 INFO 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 18:30:18,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839910594] [2024-06-27 18:30:18,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839910594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:18,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:18,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:18,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163518131] [2024-06-27 18:30:18,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:18,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:18,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:18,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:18,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 534 transitions, 8842 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:18,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:18,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:18,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:21,570 INFO L124 PetriNetUnfolderBase]: 3703/6786 cut-off events. [2024-06-27 18:30:21,570 INFO L125 PetriNetUnfolderBase]: For 349766/349766 co-relation queries the response was YES. [2024-06-27 18:30:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43963 conditions, 6786 events. 3703/6786 cut-off events. For 349766/349766 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 51796 event pairs, 1536 based on Foata normal form. 16/6501 useless extension candidates. Maximal degree in co-relation 43755. Up to 5911 conditions per place. [2024-06-27 18:30:21,728 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 506 selfloop transitions, 53 changer transitions 0/566 dead transitions. [2024-06-27 18:30:21,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 566 transitions, 10171 flow [2024-06-27 18:30:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:30:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:30:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:30:21,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-27 18:30:21,730 INFO L175 Difference]: Start difference. First operand has 430 places, 534 transitions, 8842 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:30:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 566 transitions, 10171 flow [2024-06-27 18:30:25,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 566 transitions, 9693 flow, removed 158 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:25,233 INFO L231 Difference]: Finished difference. Result has 431 places, 534 transitions, 8483 flow [2024-06-27 18:30:25,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8364, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8483, PETRI_PLACES=431, PETRI_TRANSITIONS=534} [2024-06-27 18:30:25,233 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 391 predicate places. [2024-06-27 18:30:25,233 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 534 transitions, 8483 flow [2024-06-27 18:30:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:25,234 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 18:30:25,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:30:25,234 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:25,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1118146121, now seen corresponding path program 26 times [2024-06-27 18:30:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066506850] [2024-06-27 18:30:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:30:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066506850] [2024-06-27 18:30:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066506850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:26,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345147158] [2024-06-27 18:30:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:26,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:27,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:27,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 534 transitions, 8483 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:27,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:27,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:27,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:29,571 INFO L124 PetriNetUnfolderBase]: 3719/6814 cut-off events. [2024-06-27 18:30:29,571 INFO L125 PetriNetUnfolderBase]: For 223229/223229 co-relation queries the response was YES. [2024-06-27 18:30:29,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43191 conditions, 6814 events. 3719/6814 cut-off events. For 223229/223229 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 51991 event pairs, 1403 based on Foata normal form. 2/6509 useless extension candidates. Maximal degree in co-relation 42983. Up to 6304 conditions per place. [2024-06-27 18:30:29,743 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 479 selfloop transitions, 73 changer transitions 0/559 dead transitions. [2024-06-27 18:30:29,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 559 transitions, 9937 flow [2024-06-27 18:30:29,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 18:30:29,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 18:30:29,745 INFO L175 Difference]: Start difference. First operand has 431 places, 534 transitions, 8483 flow. Second operand 10 states and 148 transitions. [2024-06-27 18:30:29,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 559 transitions, 9937 flow [2024-06-27 18:30:33,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 559 transitions, 9718 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-06-27 18:30:33,231 INFO L231 Difference]: Finished difference. Result has 431 places, 536 transitions, 8639 flow [2024-06-27 18:30:33,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8296, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8639, PETRI_PLACES=431, PETRI_TRANSITIONS=536} [2024-06-27 18:30:33,248 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 391 predicate places. [2024-06-27 18:30:33,248 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 536 transitions, 8639 flow [2024-06-27 18:30:33,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:33,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:33,249 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 18:30:33,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:30:33,249 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:33,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:33,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1118151701, now seen corresponding path program 27 times [2024-06-27 18:30:33,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:33,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858324503] [2024-06-27 18:30:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:33,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:34,426 INFO 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 18:30:34,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858324503] [2024-06-27 18:30:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858324503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:34,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131461135] [2024-06-27 18:30:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:34,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:34,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:34,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:34,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 536 transitions, 8639 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:34,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:34,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:34,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:37,734 INFO L124 PetriNetUnfolderBase]: 3735/6842 cut-off events. [2024-06-27 18:30:37,735 INFO L125 PetriNetUnfolderBase]: For 205747/205747 co-relation queries the response was YES. [2024-06-27 18:30:37,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43145 conditions, 6842 events. 3735/6842 cut-off events. For 205747/205747 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 52192 event pairs, 1403 based on Foata normal form. 2/6538 useless extension candidates. Maximal degree in co-relation 42936. Up to 6288 conditions per place. [2024-06-27 18:30:37,901 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 480 selfloop transitions, 76 changer transitions 0/563 dead transitions. [2024-06-27 18:30:37,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 563 transitions, 10077 flow [2024-06-27 18:30:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:37,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:30:37,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 18:30:37,903 INFO L175 Difference]: Start difference. First operand has 431 places, 536 transitions, 8639 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:30:37,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 563 transitions, 10077 flow [2024-06-27 18:30:41,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 563 transitions, 9750 flow, removed 92 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:41,310 INFO L231 Difference]: Finished difference. Result has 433 places, 538 transitions, 8665 flow [2024-06-27 18:30:41,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8312, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8665, PETRI_PLACES=433, PETRI_TRANSITIONS=538} [2024-06-27 18:30:41,311 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 393 predicate places. [2024-06-27 18:30:41,311 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 538 transitions, 8665 flow [2024-06-27 18:30:41,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:41,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:41,311 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 18:30:41,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:30:41,312 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:41,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1658777205, now seen corresponding path program 28 times [2024-06-27 18:30:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200464326] [2024-06-27 18:30:41,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:42,590 INFO 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 18:30:42,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:42,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200464326] [2024-06-27 18:30:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200464326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:42,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:42,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652155125] [2024-06-27 18:30:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:42,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 538 transitions, 8665 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:42,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:42,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:45,867 INFO L124 PetriNetUnfolderBase]: 3863/7132 cut-off events. [2024-06-27 18:30:45,868 INFO L125 PetriNetUnfolderBase]: For 295285/295285 co-relation queries the response was YES. [2024-06-27 18:30:46,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46534 conditions, 7132 events. 3863/7132 cut-off events. For 295285/295285 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 54918 event pairs, 1383 based on Foata normal form. 2/6815 useless extension candidates. Maximal degree in co-relation 46324. Up to 5466 conditions per place. [2024-06-27 18:30:46,105 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 395 selfloop transitions, 178 changer transitions 0/580 dead transitions. [2024-06-27 18:30:46,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 580 transitions, 10674 flow [2024-06-27 18:30:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:30:46,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 18:30:46,107 INFO L175 Difference]: Start difference. First operand has 433 places, 538 transitions, 8665 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:30:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 580 transitions, 10674 flow [2024-06-27 18:30:49,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 580 transitions, 10337 flow, removed 94 selfloop flow, removed 8 redundant places. [2024-06-27 18:30:50,008 INFO L231 Difference]: Finished difference. Result has 435 places, 541 transitions, 8943 flow [2024-06-27 18:30:50,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8328, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8943, PETRI_PLACES=435, PETRI_TRANSITIONS=541} [2024-06-27 18:30:50,020 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 395 predicate places. [2024-06-27 18:30:50,020 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 541 transitions, 8943 flow [2024-06-27 18:30:50,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:50,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:50,020 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 18:30:50,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:30:50,021 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:50,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash 359566741, now seen corresponding path program 29 times [2024-06-27 18:30:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:50,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642638552] [2024-06-27 18:30:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:50,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:30:51,048 INFO 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 18:30:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:30:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642638552] [2024-06-27 18:30:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642638552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:30:51,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:30:51,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:30:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679368459] [2024-06-27 18:30:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:30:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:30:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:30:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:30:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:30:51,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:30:51,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 541 transitions, 8943 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:51,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:30:51,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:30:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:30:54,280 INFO L124 PetriNetUnfolderBase]: 3879/7156 cut-off events. [2024-06-27 18:30:54,280 INFO L125 PetriNetUnfolderBase]: For 302053/302053 co-relation queries the response was YES. [2024-06-27 18:30:54,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47215 conditions, 7156 events. 3879/7156 cut-off events. For 302053/302053 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 55195 event pairs, 1677 based on Foata normal form. 2/6832 useless extension candidates. Maximal degree in co-relation 47004. Up to 6368 conditions per place. [2024-06-27 18:30:54,423 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 484 selfloop transitions, 75 changer transitions 0/566 dead transitions. [2024-06-27 18:30:54,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 566 transitions, 10391 flow [2024-06-27 18:30:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:30:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:30:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:30:54,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 18:30:54,424 INFO L175 Difference]: Start difference. First operand has 435 places, 541 transitions, 8943 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:30:54,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 566 transitions, 10391 flow [2024-06-27 18:30:58,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 566 transitions, 9951 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-27 18:30:58,880 INFO L231 Difference]: Finished difference. Result has 438 places, 543 transitions, 8862 flow [2024-06-27 18:30:58,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8507, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8862, PETRI_PLACES=438, PETRI_TRANSITIONS=543} [2024-06-27 18:30:58,880 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 398 predicate places. [2024-06-27 18:30:58,881 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 543 transitions, 8862 flow [2024-06-27 18:30:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:30:58,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:30:58,881 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 18:30:58,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:30:58,881 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:30:58,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:30:58,882 INFO L85 PathProgramCache]: Analyzing trace with hash -911492681, now seen corresponding path program 30 times [2024-06-27 18:30:58,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:30:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859117780] [2024-06-27 18:30:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:30:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:30:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:00,031 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 18:31:00,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:00,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859117780] [2024-06-27 18:31:00,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859117780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:00,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026452719] [2024-06-27 18:31:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:00,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:00,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:00,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:00,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 543 transitions, 8862 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:00,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:00,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:00,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:03,210 INFO L124 PetriNetUnfolderBase]: 3963/7324 cut-off events. [2024-06-27 18:31:03,211 INFO L125 PetriNetUnfolderBase]: For 383221/383221 co-relation queries the response was YES. [2024-06-27 18:31:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48701 conditions, 7324 events. 3963/7324 cut-off events. For 383221/383221 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 56781 event pairs, 1728 based on Foata normal form. 12/7008 useless extension candidates. Maximal degree in co-relation 48489. Up to 6708 conditions per place. [2024-06-27 18:31:03,372 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 529 selfloop transitions, 36 changer transitions 0/572 dead transitions. [2024-06-27 18:31:03,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 572 transitions, 10377 flow [2024-06-27 18:31:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:31:03,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 18:31:03,373 INFO L175 Difference]: Start difference. First operand has 438 places, 543 transitions, 8862 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:31:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 572 transitions, 10377 flow [2024-06-27 18:31:08,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 572 transitions, 10040 flow, removed 95 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:08,397 INFO L231 Difference]: Finished difference. Result has 440 places, 545 transitions, 8807 flow [2024-06-27 18:31:08,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8525, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8807, PETRI_PLACES=440, PETRI_TRANSITIONS=545} [2024-06-27 18:31:08,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 400 predicate places. [2024-06-27 18:31:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 545 transitions, 8807 flow [2024-06-27 18:31:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:08,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:08,399 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 18:31:08,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:31:08,399 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:08,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash -65386049, now seen corresponding path program 31 times [2024-06-27 18:31:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:08,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098041586] [2024-06-27 18:31:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:08,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:09,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:09,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098041586] [2024-06-27 18:31:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098041586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:09,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:09,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041599336] [2024-06-27 18:31:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:09,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:09,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:09,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 545 transitions, 8807 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:09,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:09,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:09,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:12,742 INFO L124 PetriNetUnfolderBase]: 3998/7380 cut-off events. [2024-06-27 18:31:12,743 INFO L125 PetriNetUnfolderBase]: For 358173/358173 co-relation queries the response was YES. [2024-06-27 18:31:12,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49504 conditions, 7380 events. 3998/7380 cut-off events. For 358173/358173 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 57316 event pairs, 1683 based on Foata normal form. 2/7054 useless extension candidates. Maximal degree in co-relation 49291. Up to 6351 conditions per place. [2024-06-27 18:31:12,898 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 492 selfloop transitions, 80 changer transitions 0/579 dead transitions. [2024-06-27 18:31:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 579 transitions, 10761 flow [2024-06-27 18:31:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:31:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:31:12,900 INFO L175 Difference]: Start difference. First operand has 440 places, 545 transitions, 8807 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:31:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 579 transitions, 10761 flow [2024-06-27 18:31:16,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 579 transitions, 10533 flow, removed 80 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:16,706 INFO L231 Difference]: Finished difference. Result has 442 places, 549 transitions, 9156 flow [2024-06-27 18:31:16,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8579, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9156, PETRI_PLACES=442, PETRI_TRANSITIONS=549} [2024-06-27 18:31:16,707 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 402 predicate places. [2024-06-27 18:31:16,707 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 549 transitions, 9156 flow [2024-06-27 18:31:16,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:16,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:16,707 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 18:31:16,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:31:16,707 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:16,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash -65170723, now seen corresponding path program 12 times [2024-06-27 18:31:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972871842] [2024-06-27 18:31:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:17,758 INFO 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 18:31:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972871842] [2024-06-27 18:31:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972871842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:17,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:17,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849999410] [2024-06-27 18:31:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:17,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:17,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:17,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:17,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 549 transitions, 9156 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:17,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:17,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:17,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:21,311 INFO L124 PetriNetUnfolderBase]: 4066/7509 cut-off events. [2024-06-27 18:31:21,311 INFO L125 PetriNetUnfolderBase]: For 399791/399791 co-relation queries the response was YES. [2024-06-27 18:31:21,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50257 conditions, 7509 events. 4066/7509 cut-off events. For 399791/399791 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 58622 event pairs, 1743 based on Foata normal form. 10/7187 useless extension candidates. Maximal degree in co-relation 50043. Up to 6571 conditions per place. [2024-06-27 18:31:21,690 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 498 selfloop transitions, 75 changer transitions 0/580 dead transitions. [2024-06-27 18:31:21,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 580 transitions, 10660 flow [2024-06-27 18:31:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:31:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:31:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:31:21,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 18:31:21,692 INFO L175 Difference]: Start difference. First operand has 442 places, 549 transitions, 9156 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:31:21,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 580 transitions, 10660 flow [2024-06-27 18:31:26,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 580 transitions, 10353 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:26,613 INFO L231 Difference]: Finished difference. Result has 447 places, 550 transitions, 9158 flow [2024-06-27 18:31:26,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8849, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9158, PETRI_PLACES=447, PETRI_TRANSITIONS=550} [2024-06-27 18:31:26,614 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 407 predicate places. [2024-06-27 18:31:26,614 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 550 transitions, 9158 flow [2024-06-27 18:31:26,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:26,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:26,615 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 18:31:26,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:31:26,616 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:26,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash -58028819, now seen corresponding path program 32 times [2024-06-27 18:31:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:26,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344633785] [2024-06-27 18:31:26,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:27,691 INFO 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 18:31:27,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:27,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344633785] [2024-06-27 18:31:27,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344633785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:27,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:27,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592841552] [2024-06-27 18:31:27,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:27,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:27,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:27,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:27,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:27,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 550 transitions, 9158 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:27,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:27,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:27,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:31,078 INFO L124 PetriNetUnfolderBase]: 4150/7668 cut-off events. [2024-06-27 18:31:31,078 INFO L125 PetriNetUnfolderBase]: For 435559/435559 co-relation queries the response was YES. [2024-06-27 18:31:31,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51866 conditions, 7668 events. 4150/7668 cut-off events. For 435559/435559 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 60201 event pairs, 1775 based on Foata normal form. 12/7344 useless extension candidates. Maximal degree in co-relation 51650. Up to 6739 conditions per place. [2024-06-27 18:31:31,412 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 501 selfloop transitions, 71 changer transitions 0/579 dead transitions. [2024-06-27 18:31:31,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 579 transitions, 10682 flow [2024-06-27 18:31:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:31:31,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 18:31:31,413 INFO L175 Difference]: Start difference. First operand has 447 places, 550 transitions, 9158 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:31:31,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 579 transitions, 10682 flow [2024-06-27 18:31:35,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 579 transitions, 10419 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 18:31:35,812 INFO L231 Difference]: Finished difference. Result has 448 places, 552 transitions, 9239 flow [2024-06-27 18:31:35,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8895, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9239, PETRI_PLACES=448, PETRI_TRANSITIONS=552} [2024-06-27 18:31:35,813 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 408 predicate places. [2024-06-27 18:31:35,813 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 552 transitions, 9239 flow [2024-06-27 18:31:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:35,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:35,814 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 18:31:35,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:31:35,814 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:35,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:35,815 INFO L85 PathProgramCache]: Analyzing trace with hash -57752113, now seen corresponding path program 13 times [2024-06-27 18:31:35,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:35,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775792686] [2024-06-27 18:31:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:35,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:31:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775792686] [2024-06-27 18:31:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775792686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:36,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:36,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:36,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656176342] [2024-06-27 18:31:36,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:36,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:36,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:36,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 552 transitions, 9239 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:36,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:36,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:36,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:40,507 INFO L124 PetriNetUnfolderBase]: 4283/7924 cut-off events. [2024-06-27 18:31:40,508 INFO L125 PetriNetUnfolderBase]: For 499722/499722 co-relation queries the response was YES. [2024-06-27 18:31:40,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55009 conditions, 7924 events. 4283/7924 cut-off events. For 499722/499722 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 62604 event pairs, 1805 based on Foata normal form. 8/7600 useless extension candidates. Maximal degree in co-relation 54792. Up to 6543 conditions per place. [2024-06-27 18:31:40,701 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 507 selfloop transitions, 73 changer transitions 0/587 dead transitions. [2024-06-27 18:31:40,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 587 transitions, 11157 flow [2024-06-27 18:31:40,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:31:40,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:31:40,703 INFO L175 Difference]: Start difference. First operand has 448 places, 552 transitions, 9239 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:31:40,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 587 transitions, 11157 flow [2024-06-27 18:31:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 587 transitions, 10871 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-27 18:31:45,775 INFO L231 Difference]: Finished difference. Result has 450 places, 554 transitions, 9409 flow [2024-06-27 18:31:45,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8953, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9409, PETRI_PLACES=450, PETRI_TRANSITIONS=554} [2024-06-27 18:31:45,776 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 410 predicate places. [2024-06-27 18:31:45,776 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 554 transitions, 9409 flow [2024-06-27 18:31:45,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:45,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:45,776 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 18:31:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:31:45,777 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:45,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1518017161, now seen corresponding path program 14 times [2024-06-27 18:31:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569270959] [2024-06-27 18:31:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:45,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:46,991 INFO 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 18:31:46,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:46,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569270959] [2024-06-27 18:31:46,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569270959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:46,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:46,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:31:46,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771582711] [2024-06-27 18:31:46,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:46,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:31:46,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:31:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:31:47,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:47,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 554 transitions, 9409 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:47,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:47,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:47,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:31:51,101 INFO L124 PetriNetUnfolderBase]: 4351/8058 cut-off events. [2024-06-27 18:31:51,101 INFO L125 PetriNetUnfolderBase]: For 519460/519460 co-relation queries the response was YES. [2024-06-27 18:31:51,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55616 conditions, 8058 events. 4351/8058 cut-off events. For 519460/519460 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 63835 event pairs, 1753 based on Foata normal form. 10/7728 useless extension candidates. Maximal degree in co-relation 55398. Up to 7341 conditions per place. [2024-06-27 18:31:51,283 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 500 selfloop transitions, 75 changer transitions 0/582 dead transitions. [2024-06-27 18:31:51,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 582 transitions, 10901 flow [2024-06-27 18:31:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:31:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:31:51,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:31:51,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 18:31:51,285 INFO L175 Difference]: Start difference. First operand has 450 places, 554 transitions, 9409 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:31:51,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 582 transitions, 10901 flow [2024-06-27 18:31:57,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 582 transitions, 10680 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 18:31:57,136 INFO L231 Difference]: Finished difference. Result has 454 places, 555 transitions, 9502 flow [2024-06-27 18:31:57,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9188, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9502, PETRI_PLACES=454, PETRI_TRANSITIONS=555} [2024-06-27 18:31:57,137 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 414 predicate places. [2024-06-27 18:31:57,137 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 555 transitions, 9502 flow [2024-06-27 18:31:57,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:57,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:31:57,137 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 18:31:57,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:31:57,138 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:31:57,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:31:57,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1316659141, now seen corresponding path program 15 times [2024-06-27 18:31:57,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:31:57,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105009813] [2024-06-27 18:31:57,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:31:57,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:31:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:31:58,073 INFO 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 18:31:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:31:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105009813] [2024-06-27 18:31:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105009813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:31:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:31:58,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:31:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574366732] [2024-06-27 18:31:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:31:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:31:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:31:58,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:31:58,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:31:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:31:58,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 555 transitions, 9502 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:31:58,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:31:58,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:31:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:01,934 INFO L124 PetriNetUnfolderBase]: 4503/8350 cut-off events. [2024-06-27 18:32:01,934 INFO L125 PetriNetUnfolderBase]: For 624074/624074 co-relation queries the response was YES. [2024-06-27 18:32:02,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59869 conditions, 8350 events. 4503/8350 cut-off events. For 624074/624074 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 66825 event pairs, 1987 based on Foata normal form. 8/8017 useless extension candidates. Maximal degree in co-relation 59649. Up to 7382 conditions per place. [2024-06-27 18:32:02,080 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 548 selfloop transitions, 36 changer transitions 0/591 dead transitions. [2024-06-27 18:32:02,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 591 transitions, 11495 flow [2024-06-27 18:32:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:32:02,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-27 18:32:02,082 INFO L175 Difference]: Start difference. First operand has 454 places, 555 transitions, 9502 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:32:02,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 591 transitions, 11495 flow [2024-06-27 18:32:06,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 591 transitions, 11227 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 18:32:06,846 INFO L231 Difference]: Finished difference. Result has 456 places, 557 transitions, 9624 flow [2024-06-27 18:32:06,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9234, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9624, PETRI_PLACES=456, PETRI_TRANSITIONS=557} [2024-06-27 18:32:06,849 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 416 predicate places. [2024-06-27 18:32:06,849 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 557 transitions, 9624 flow [2024-06-27 18:32:06,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:06,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:06,850 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 18:32:06,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:32:06,850 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:06,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash 366926327, now seen corresponding path program 16 times [2024-06-27 18:32:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:06,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59627080] [2024-06-27 18:32:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:06,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:07,725 INFO 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 18:32:07,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:07,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59627080] [2024-06-27 18:32:07,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59627080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:07,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:07,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276631479] [2024-06-27 18:32:07,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:07,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:07,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:07,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:32:07,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 557 transitions, 9624 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:07,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:07,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:32:07,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:11,270 INFO L124 PetriNetUnfolderBase]: 4490/8317 cut-off events. [2024-06-27 18:32:11,270 INFO L125 PetriNetUnfolderBase]: For 558034/558034 co-relation queries the response was YES. [2024-06-27 18:32:11,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58044 conditions, 8317 events. 4490/8317 cut-off events. For 558034/558034 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 66622 event pairs, 1967 based on Foata normal form. 10/7984 useless extension candidates. Maximal degree in co-relation 57823. Up to 7237 conditions per place. [2024-06-27 18:32:11,418 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 509 selfloop transitions, 71 changer transitions 0/587 dead transitions. [2024-06-27 18:32:11,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 587 transitions, 10992 flow [2024-06-27 18:32:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:32:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:32:11,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:32:11,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 18:32:11,425 INFO L175 Difference]: Start difference. First operand has 456 places, 557 transitions, 9624 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:32:11,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 587 transitions, 10992 flow [2024-06-27 18:32:17,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 587 transitions, 10706 flow, removed 123 selfloop flow, removed 6 redundant places. [2024-06-27 18:32:17,632 INFO L231 Difference]: Finished difference. Result has 461 places, 557 transitions, 9488 flow [2024-06-27 18:32:17,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9338, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9488, PETRI_PLACES=461, PETRI_TRANSITIONS=557} [2024-06-27 18:32:17,635 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 421 predicate places. [2024-06-27 18:32:17,635 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 557 transitions, 9488 flow [2024-06-27 18:32:17,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:17,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:32:17,636 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 18:32:17,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:32:17,636 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:32:17,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:32:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash 615079769, now seen corresponding path program 33 times [2024-06-27 18:32:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:32:17,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074786138] [2024-06-27 18:32:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:32:17,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:32:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:32:18,591 INFO 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 18:32:18,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:32:18,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074786138] [2024-06-27 18:32:18,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074786138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:32:18,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:32:18,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:32:18,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26634877] [2024-06-27 18:32:18,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:32:18,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:32:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:32:18,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:32:18,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:32:18,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:32:18,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 557 transitions, 9488 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:32:18,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:32:18,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:32:18,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:32:22,353 INFO L124 PetriNetUnfolderBase]: 4474/8304 cut-off events. [2024-06-27 18:32:22,353 INFO L125 PetriNetUnfolderBase]: For 455137/455137 co-relation queries the response was YES. [2024-06-27 18:32:22,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55857 conditions, 8304 events. 4474/8304 cut-off events. For 455137/455137 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 66543 event pairs, 2334 based on Foata normal form. 12/7972 useless extension candidates. Maximal degree in co-relation 55634. Up to 7718 conditions per place. [2024-06-27 18:32:22,547 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 553 selfloop transitions, 22 changer transitions 0/582 dead transitions. [2024-06-27 18:32:22,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 582 transitions, 10806 flow [2024-06-27 18:32:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:32:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:32:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:32:22,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 18:32:22,549 INFO L175 Difference]: Start difference. First operand has 461 places, 557 transitions, 9488 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:32:22,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 582 transitions, 10806 flow