./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:38:29,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:38:29,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:38:29,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:38:29,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:38:29,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:38:29,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:38:29,725 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:38:29,725 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:38:29,726 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:38:29,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:38:29,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:38:29,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:38:29,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:38:29,730 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:38:29,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:38:29,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:38:29,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:38:29,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:38:29,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:38:29,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:38:29,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:38:29,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:38:29,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:38:29,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:38:29,736 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:38:29,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:38:29,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:38:29,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:38:29,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:38:29,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:38:29,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:38:29,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:38:29,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:38:29,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:38:29,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:38:29,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:38:29,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:38:29,749 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:38:29,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:38:29,749 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:38:29,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:38:29,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:38:29,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:38:29,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:38:29,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:38:29,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:38:29,954 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:38:29,955 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:38:29,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:38:30,082 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:38:30,083 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:38:30,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:38:31,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:38:31,321 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:38:31,321 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:38:31,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61c5a3fe/b497494e3c5f4943b359963d592331ec/FLAGb5d921ba4 [2024-06-27 18:38:31,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b61c5a3fe/b497494e3c5f4943b359963d592331ec [2024-06-27 18:38:31,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:38:31,346 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:38:31,347 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:38:31,347 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:38:31,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:38:31,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:38:30" (1/2) ... [2024-06-27 18:38:31,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6be778 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:38:31, skipping insertion in model container [2024-06-27 18:38:31,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:38:30" (1/2) ... [2024-06-27 18:38:31,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1626de75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:38:31, skipping insertion in model container [2024-06-27 18:38:31,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:38:31" (2/2) ... [2024-06-27 18:38:31,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6be778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31, skipping insertion in model container [2024-06-27 18:38:31,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:38:31" (2/2) ... [2024-06-27 18:38:31,354 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:38:31,401 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:38:31,402 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:38:31,402 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:38:31,402 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:38:31,402 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-27 18:38:31,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:38:31,594 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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] [2024-06-27 18:38:31,788 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:38:31,797 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:38:31,829 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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:38:31,908 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:38:31,944 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:38:31,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31 WrapperNode [2024-06-27 18:38:31,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:38:31,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:38:31,947 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:38:31,947 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:38:31,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:31,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,013 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-06-27 18:38:32,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:38:32,015 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:38:32,015 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:38:32,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:38:32,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,056 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 18:38:32,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:38:32,092 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:38:32,092 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:38:32,092 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:38:32,093 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (1/1) ... [2024-06-27 18:38:32,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:38:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:38:32,122 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 18:38:32,124 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 18:38:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:38:32,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:38:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:38:32,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:38:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:38:32,153 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:38:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:38:32,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:38:32,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:38:32,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:38:32,155 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 18:38:32,270 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:38:32,272 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:38:32,540 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:38:32,540 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:38:32,666 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:38:32,667 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:38:32,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:38:32 BoogieIcfgContainer [2024-06-27 18:38:32,667 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:38:32,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:38:32,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:38:32,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:38:32,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:38:30" (1/4) ... [2024-06-27 18:38:32,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1081e2e0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:38:32, skipping insertion in model container [2024-06-27 18:38:32,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:38:31" (2/4) ... [2024-06-27 18:38:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1081e2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:38:32, skipping insertion in model container [2024-06-27 18:38:32,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:31" (3/4) ... [2024-06-27 18:38:32,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1081e2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:38:32, skipping insertion in model container [2024-06-27 18:38:32,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:38:32" (4/4) ... [2024-06-27 18:38:32,677 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:38:32,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:38:32,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:38:32,690 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:38:32,722 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:38:32,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 78 flow [2024-06-27 18:38:32,771 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-06-27 18:38:32,771 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:38:32,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-27 18:38:32,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 78 flow [2024-06-27 18:38:32,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 33 transitions, 72 flow [2024-06-27 18:38:32,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:38:32,788 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;@1dcd5ca4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:38:32,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:38:32,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:38:32,790 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:38:32,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:38:32,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:32,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:38:32,791 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 18:38:32,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:32,795 INFO L85 PathProgramCache]: Analyzing trace with hash 306675205, now seen corresponding path program 1 times [2024-06-27 18:38:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:32,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96197053] [2024-06-27 18:38:32,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:33,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96197053] [2024-06-27 18:38:33,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96197053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:33,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:38:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997466740] [2024-06-27 18:38:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:33,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:38:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:38:33,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:38:33,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-27 18:38:33,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 72 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 18:38:33,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:33,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-27 18:38:33,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:33,613 INFO L124 PetriNetUnfolderBase]: 461/899 cut-off events. [2024-06-27 18:38:33,613 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:38:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 899 events. 461/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4874 event pairs, 356 based on Foata normal form. 37/842 useless extension candidates. Maximal degree in co-relation 1678. Up to 762 conditions per place. [2024-06-27 18:38:33,624 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-27 18:38:33,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 167 flow [2024-06-27 18:38:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:38:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:38:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-27 18:38:33,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-27 18:38:33,639 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-06-27 18:38:33,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 167 flow [2024-06-27 18:38:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:33,644 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 96 flow [2024-06-27 18:38:33,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-06-27 18:38:33,648 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-27 18:38:33,649 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 96 flow [2024-06-27 18:38:33,649 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 18:38:33,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:33,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:33,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:38:33,650 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 18:38:33,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1637084560, now seen corresponding path program 1 times [2024-06-27 18:38:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623899271] [2024-06-27 18:38:33,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:33,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:34,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623899271] [2024-06-27 18:38:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623899271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:38:34,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967079453] [2024-06-27 18:38:34,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:38:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:38:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:38:34,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 18:38:34,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 96 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 18:38:34,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 18:38:34,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:34,219 INFO L124 PetriNetUnfolderBase]: 539/907 cut-off events. [2024-06-27 18:38:34,219 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-27 18:38:34,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 907 events. 539/907 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4328 event pairs, 213 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 2028. Up to 867 conditions per place. [2024-06-27 18:38:34,224 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 18:38:34,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 242 flow [2024-06-27 18:38:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:38:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:38:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-06-27 18:38:34,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-27 18:38:34,227 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 96 flow. Second operand 4 states and 90 transitions. [2024-06-27 18:38:34,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 242 flow [2024-06-27 18:38:34,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:38:34,231 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 130 flow [2024-06-27 18:38:34,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-27 18:38:34,231 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-06-27 18:38:34,232 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 130 flow [2024-06-27 18:38:34,232 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 18:38:34,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:38:34,233 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 18:38:34,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash 789987418, now seen corresponding path program 1 times [2024-06-27 18:38:34,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38170688] [2024-06-27 18:38:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,591 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 18:38:34,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38170688] [2024-06-27 18:38:34,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38170688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:38:34,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92831772] [2024-06-27 18:38:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:38:34,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:38:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:38:34,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 18:38:34,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 130 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 18:38:34,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 18:38:34,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:34,824 INFO L124 PetriNetUnfolderBase]: 531/1015 cut-off events. [2024-06-27 18:38:34,824 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2024-06-27 18:38:34,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1015 events. 531/1015 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5453 event pairs, 173 based on Foata normal form. 4/931 useless extension candidates. Maximal degree in co-relation 2312. Up to 838 conditions per place. [2024-06-27 18:38:34,832 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-27 18:38:34,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 69 transitions, 354 flow [2024-06-27 18:38:34,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-27 18:38:34,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-06-27 18:38:34,837 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 130 flow. Second operand 5 states and 107 transitions. [2024-06-27 18:38:34,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 69 transitions, 354 flow [2024-06-27 18:38:34,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 328 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:34,840 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 227 flow [2024-06-27 18:38:34,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2024-06-27 18:38:34,841 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-06-27 18:38:34,842 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 227 flow [2024-06-27 18:38:34,842 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 18:38:34,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:34,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:38:34,842 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 18:38:34,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash 765930865, now seen corresponding path program 1 times [2024-06-27 18:38:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589222367] [2024-06-27 18:38:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:34,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589222367] [2024-06-27 18:38:34,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589222367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:38:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186556696] [2024-06-27 18:38:34,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:38:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:38:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:38:34,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2024-06-27 18:38:34,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 227 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 18:38:34,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2024-06-27 18:38:34,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:34,977 INFO L124 PetriNetUnfolderBase]: 185/485 cut-off events. [2024-06-27 18:38:34,977 INFO L125 PetriNetUnfolderBase]: For 266/292 co-relation queries the response was YES. [2024-06-27 18:38:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 485 events. 185/485 cut-off events. For 266/292 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2899 event pairs, 80 based on Foata normal form. 10/462 useless extension candidates. Maximal degree in co-relation 1045. Up to 286 conditions per place. [2024-06-27 18:38:34,980 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 25 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-27 18:38:34,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 266 flow [2024-06-27 18:38:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:38:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:38:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-27 18:38:34,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-06-27 18:38:34,982 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 227 flow. Second operand 3 states and 76 transitions. [2024-06-27 18:38:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 266 flow [2024-06-27 18:38:34,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 262 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:38:34,984 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 194 flow [2024-06-27 18:38:34,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-27 18:38:34,985 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2024-06-27 18:38:34,986 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 194 flow [2024-06-27 18:38:34,986 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 18:38:34,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:38:34,986 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 18:38:34,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -257322019, now seen corresponding path program 1 times [2024-06-27 18:38:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001290210] [2024-06-27 18:38:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:35,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001290210] [2024-06-27 18:38:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001290210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:35,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429995245] [2024-06-27 18:38:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:35,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-27 18:38:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 194 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 18:38:35,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:35,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-27 18:38:35,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:35,833 INFO L124 PetriNetUnfolderBase]: 449/863 cut-off events. [2024-06-27 18:38:35,833 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2024-06-27 18:38:35,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 863 events. 449/863 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4389 event pairs, 96 based on Foata normal form. 4/830 useless extension candidates. Maximal degree in co-relation 2105. Up to 678 conditions per place. [2024-06-27 18:38:35,837 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 12 changer transitions 1/68 dead transitions. [2024-06-27 18:38:35,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 372 flow [2024-06-27 18:38:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 18:38:35,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-27 18:38:35,842 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 194 flow. Second operand 6 states and 118 transitions. [2024-06-27 18:38:35,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 372 flow [2024-06-27 18:38:35,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:35,846 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 215 flow [2024-06-27 18:38:35,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 18:38:35,851 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-06-27 18:38:35,851 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 215 flow [2024-06-27 18:38:35,851 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 18:38:35,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:35,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:35,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:38:35,853 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 18:38:35,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1619566511, now seen corresponding path program 1 times [2024-06-27 18:38:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550547108] [2024-06-27 18:38:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:35,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:36,172 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 18:38:36,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:36,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550547108] [2024-06-27 18:38:36,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550547108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:36,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:36,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:38:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81711081] [2024-06-27 18:38:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:38:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:38:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:38:36,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 18:38:36,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 215 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 18:38:36,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:36,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 18:38:36,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:36,381 INFO L124 PetriNetUnfolderBase]: 370/748 cut-off events. [2024-06-27 18:38:36,382 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-27 18:38:36,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1927 conditions, 748 events. 370/748 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3837 event pairs, 146 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 1906. Up to 608 conditions per place. [2024-06-27 18:38:36,386 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 47 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-06-27 18:38:36,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 382 flow [2024-06-27 18:38:36,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 18:38:36,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:38:36,388 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 215 flow. Second operand 5 states and 85 transitions. [2024-06-27 18:38:36,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 382 flow [2024-06-27 18:38:36,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 349 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:36,391 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 244 flow [2024-06-27 18:38:36,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-06-27 18:38:36,393 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-06-27 18:38:36,393 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 244 flow [2024-06-27 18:38:36,394 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 18:38:36,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:36,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:36,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:38:36,394 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 18:38:36,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:36,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2103301788, now seen corresponding path program 1 times [2024-06-27 18:38:36,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411676275] [2024-06-27 18:38:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:36,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:36,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411676275] [2024-06-27 18:38:36,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411676275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:36,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:36,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054374914] [2024-06-27 18:38:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:36,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:36,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:36,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 244 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 18:38:36,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:36,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:36,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,063 INFO L124 PetriNetUnfolderBase]: 468/901 cut-off events. [2024-06-27 18:38:37,063 INFO L125 PetriNetUnfolderBase]: For 905/905 co-relation queries the response was YES. [2024-06-27 18:38:37,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 901 events. 468/901 cut-off events. For 905/905 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4521 event pairs, 183 based on Foata normal form. 1/862 useless extension candidates. Maximal degree in co-relation 2404. Up to 750 conditions per place. [2024-06-27 18:38:37,068 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 56 selfloop transitions, 10 changer transitions 0/72 dead transitions. [2024-06-27 18:38:37,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 447 flow [2024-06-27 18:38:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 18:38:37,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:38:37,070 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 244 flow. Second operand 6 states and 98 transitions. [2024-06-27 18:38:37,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 447 flow [2024-06-27 18:38:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 438 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:37,074 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 299 flow [2024-06-27 18:38:37,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-27 18:38:37,075 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-06-27 18:38:37,075 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 299 flow [2024-06-27 18:38:37,076 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 18:38:37,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:38:37,076 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 18:38:37,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1625277838, now seen corresponding path program 2 times [2024-06-27 18:38:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819811748] [2024-06-27 18:38:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:37,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:37,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:37,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819811748] [2024-06-27 18:38:37,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819811748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:37,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:37,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:37,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512437967] [2024-06-27 18:38:37,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:37,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:37,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:37,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:37,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:37,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:37,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 299 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 18:38:37,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:37,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:37,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:37,710 INFO L124 PetriNetUnfolderBase]: 471/908 cut-off events. [2024-06-27 18:38:37,710 INFO L125 PetriNetUnfolderBase]: For 1404/1416 co-relation queries the response was YES. [2024-06-27 18:38:37,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 908 events. 471/908 cut-off events. For 1404/1416 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4610 event pairs, 174 based on Foata normal form. 9/876 useless extension candidates. Maximal degree in co-relation 2594. Up to 732 conditions per place. [2024-06-27 18:38:37,716 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 57 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2024-06-27 18:38:37,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 511 flow [2024-06-27 18:38:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:37,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 18:38:37,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-27 18:38:37,717 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 299 flow. Second operand 6 states and 99 transitions. [2024-06-27 18:38:37,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 511 flow [2024-06-27 18:38:37,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 494 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:37,721 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 343 flow [2024-06-27 18:38:37,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-27 18:38:37,721 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-06-27 18:38:37,722 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 343 flow [2024-06-27 18:38:37,722 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 18:38:37,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:37,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:38:37,722 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 18:38:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1625286766, now seen corresponding path program 1 times [2024-06-27 18:38:37,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:37,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745632866] [2024-06-27 18:38:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:38,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745632866] [2024-06-27 18:38:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745632866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:38,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491362456] [2024-06-27 18:38:38,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:38,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:38,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:38,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:38,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:38,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 343 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 18:38:38,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:38,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:38,549 INFO L124 PetriNetUnfolderBase]: 474/911 cut-off events. [2024-06-27 18:38:38,549 INFO L125 PetriNetUnfolderBase]: For 1645/1645 co-relation queries the response was YES. [2024-06-27 18:38:38,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 911 events. 474/911 cut-off events. For 1645/1645 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4627 event pairs, 174 based on Foata normal form. 1/872 useless extension candidates. Maximal degree in co-relation 2774. Up to 748 conditions per place. [2024-06-27 18:38:38,554 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 66 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-27 18:38:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 581 flow [2024-06-27 18:38:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 18:38:38,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-06-27 18:38:38,556 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 343 flow. Second operand 7 states and 113 transitions. [2024-06-27 18:38:38,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 581 flow [2024-06-27 18:38:38,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 567 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:38,560 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 379 flow [2024-06-27 18:38:38,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-06-27 18:38:38,560 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-06-27 18:38:38,560 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 379 flow [2024-06-27 18:38:38,561 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 18:38:38,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:38,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:38,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:38:38,561 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 18:38:38,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:38,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1334168808, now seen corresponding path program 1 times [2024-06-27 18:38:38,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:38,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017967618] [2024-06-27 18:38:38,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:38,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:38,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017967618] [2024-06-27 18:38:38,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017967618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:38,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:38,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987874010] [2024-06-27 18:38:38,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:38,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:38,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 379 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 18:38:38,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:38,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:38,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:39,262 INFO L124 PetriNetUnfolderBase]: 496/950 cut-off events. [2024-06-27 18:38:39,263 INFO L125 PetriNetUnfolderBase]: For 2057/2057 co-relation queries the response was YES. [2024-06-27 18:38:39,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 950 events. 496/950 cut-off events. For 2057/2057 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4823 event pairs, 138 based on Foata normal form. 2/910 useless extension candidates. Maximal degree in co-relation 3062. Up to 751 conditions per place. [2024-06-27 18:38:39,268 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 65 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-27 18:38:39,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 653 flow [2024-06-27 18:38:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:38:39,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:38:39,270 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 379 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:38:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 653 flow [2024-06-27 18:38:39,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 611 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:39,276 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 439 flow [2024-06-27 18:38:39,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-06-27 18:38:39,277 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-06-27 18:38:39,277 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 439 flow [2024-06-27 18:38:39,277 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 18:38:39,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:39,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:39,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:38:39,278 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 18:38:39,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1334047691, now seen corresponding path program 1 times [2024-06-27 18:38:39,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:39,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015018053] [2024-06-27 18:38:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015018053] [2024-06-27 18:38:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015018053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:39,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072698838] [2024-06-27 18:38:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:39,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:39,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:39,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 439 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 18:38:39,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:39,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:39,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:39,956 INFO L124 PetriNetUnfolderBase]: 509/970 cut-off events. [2024-06-27 18:38:39,956 INFO L125 PetriNetUnfolderBase]: For 2531/2531 co-relation queries the response was YES. [2024-06-27 18:38:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 970 events. 509/970 cut-off events. For 2531/2531 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4930 event pairs, 136 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 3362. Up to 800 conditions per place. [2024-06-27 18:38:39,962 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 76 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2024-06-27 18:38:39,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 707 flow [2024-06-27 18:38:39,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:39,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:39,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 18:38:39,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-06-27 18:38:39,964 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 439 flow. Second operand 7 states and 114 transitions. [2024-06-27 18:38:39,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 707 flow [2024-06-27 18:38:39,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 669 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:39,969 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 446 flow [2024-06-27 18:38:39,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-06-27 18:38:39,970 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-06-27 18:38:39,970 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 446 flow [2024-06-27 18:38:39,970 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 18:38:39,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:39,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:39,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:38:39,971 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 18:38:39,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash -388118244, now seen corresponding path program 2 times [2024-06-27 18:38:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:39,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356379502] [2024-06-27 18:38:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:39,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:40,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356379502] [2024-06-27 18:38:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356379502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:40,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279037014] [2024-06-27 18:38:40,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:40,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:40,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:40,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 446 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 18:38:40,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:40,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:40,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:40,631 INFO L124 PetriNetUnfolderBase]: 545/1027 cut-off events. [2024-06-27 18:38:40,631 INFO L125 PetriNetUnfolderBase]: For 3121/3121 co-relation queries the response was YES. [2024-06-27 18:38:40,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 1027 events. 545/1027 cut-off events. For 3121/3121 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5224 event pairs, 132 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 3689. Up to 785 conditions per place. [2024-06-27 18:38:40,637 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 71 selfloop transitions, 27 changer transitions 0/104 dead transitions. [2024-06-27 18:38:40,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 104 transitions, 813 flow [2024-06-27 18:38:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:40,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:38:40,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-27 18:38:40,639 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 446 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:38:40,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 104 transitions, 813 flow [2024-06-27 18:38:40,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 104 transitions, 781 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:40,645 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 573 flow [2024-06-27 18:38:40,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=573, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-06-27 18:38:40,645 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 37 predicate places. [2024-06-27 18:38:40,646 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 573 flow [2024-06-27 18:38:40,646 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 18:38:40,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:40,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:40,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:38:40,646 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 18:38:40,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1155993611, now seen corresponding path program 2 times [2024-06-27 18:38:40,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:40,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153793947] [2024-06-27 18:38:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:41,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:41,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153793947] [2024-06-27 18:38:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153793947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:41,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:41,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109818453] [2024-06-27 18:38:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:41,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:41,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:41,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:41,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:41,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 573 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 18:38:41,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:41,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:41,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:41,290 INFO L124 PetriNetUnfolderBase]: 563/1048 cut-off events. [2024-06-27 18:38:41,291 INFO L125 PetriNetUnfolderBase]: For 4349/4364 co-relation queries the response was YES. [2024-06-27 18:38:41,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4131 conditions, 1048 events. 563/1048 cut-off events. For 4349/4364 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5296 event pairs, 127 based on Foata normal form. 11/1018 useless extension candidates. Maximal degree in co-relation 4096. Up to 819 conditions per place. [2024-06-27 18:38:41,297 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 83 selfloop transitions, 20 changer transitions 0/109 dead transitions. [2024-06-27 18:38:41,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 950 flow [2024-06-27 18:38:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:38:41,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2024-06-27 18:38:41,299 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 573 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:38:41,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 950 flow [2024-06-27 18:38:41,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 890 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:41,307 INFO L231 Difference]: Finished difference. Result has 79 places, 83 transitions, 606 flow [2024-06-27 18:38:41,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=606, PETRI_PLACES=79, PETRI_TRANSITIONS=83} [2024-06-27 18:38:41,307 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 40 predicate places. [2024-06-27 18:38:41,308 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 83 transitions, 606 flow [2024-06-27 18:38:41,308 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 18:38:41,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:41,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:41,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:38:41,308 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 18:38:41,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1155993828, now seen corresponding path program 3 times [2024-06-27 18:38:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:41,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110124084] [2024-06-27 18:38:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110124084] [2024-06-27 18:38:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110124084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502923946] [2024-06-27 18:38:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:41,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:41,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:41,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 83 transitions, 606 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 18:38:41,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:41,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:41,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:42,022 INFO L124 PetriNetUnfolderBase]: 559/1057 cut-off events. [2024-06-27 18:38:42,023 INFO L125 PetriNetUnfolderBase]: For 4674/4677 co-relation queries the response was YES. [2024-06-27 18:38:42,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 1057 events. 559/1057 cut-off events. For 4674/4677 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5454 event pairs, 133 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 4145. Up to 769 conditions per place. [2024-06-27 18:38:42,029 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 77 selfloop transitions, 36 changer transitions 0/119 dead transitions. [2024-06-27 18:38:42,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 119 transitions, 1052 flow [2024-06-27 18:38:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 18:38:42,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:38:42,031 INFO L175 Difference]: Start difference. First operand has 79 places, 83 transitions, 606 flow. Second operand 7 states and 119 transitions. [2024-06-27 18:38:42,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 119 transitions, 1052 flow [2024-06-27 18:38:42,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 1018 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:42,040 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 815 flow [2024-06-27 18:38:42,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=815, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 18:38:42,041 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 46 predicate places. [2024-06-27 18:38:42,041 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 815 flow [2024-06-27 18:38:42,042 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 18:38:42,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:42,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:42,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:38:42,042 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 18:38:42,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1155986171, now seen corresponding path program 3 times [2024-06-27 18:38:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80849729] [2024-06-27 18:38:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:42,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:42,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80849729] [2024-06-27 18:38:42,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80849729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:42,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:42,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:42,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837253654] [2024-06-27 18:38:42,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:42,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:42,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:42,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:42,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 815 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 18:38:42,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:42,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:42,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:42,795 INFO L124 PetriNetUnfolderBase]: 557/1043 cut-off events. [2024-06-27 18:38:42,795 INFO L125 PetriNetUnfolderBase]: For 5167/5167 co-relation queries the response was YES. [2024-06-27 18:38:42,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1043 events. 557/1043 cut-off events. For 5167/5167 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5304 event pairs, 126 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 4456. Up to 873 conditions per place. [2024-06-27 18:38:42,807 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 101 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-06-27 18:38:42,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 120 transitions, 1142 flow [2024-06-27 18:38:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 18:38:42,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-06-27 18:38:42,809 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 815 flow. Second operand 7 states and 113 transitions. [2024-06-27 18:38:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 120 transitions, 1142 flow [2024-06-27 18:38:42,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 120 transitions, 1074 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:42,820 INFO L231 Difference]: Finished difference. Result has 90 places, 96 transitions, 778 flow [2024-06-27 18:38:42,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=90, PETRI_TRANSITIONS=96} [2024-06-27 18:38:42,822 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2024-06-27 18:38:42,822 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 96 transitions, 778 flow [2024-06-27 18:38:42,822 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 18:38:42,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:42,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:42,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:38:42,823 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 18:38:42,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1155716781, now seen corresponding path program 1 times [2024-06-27 18:38:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:42,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928685271] [2024-06-27 18:38:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928685271] [2024-06-27 18:38:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928685271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:43,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132183360] [2024-06-27 18:38:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:43,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:43,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 778 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 18:38:43,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:43,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:43,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:43,741 INFO L124 PetriNetUnfolderBase]: 554/1041 cut-off events. [2024-06-27 18:38:43,742 INFO L125 PetriNetUnfolderBase]: For 5194/5194 co-relation queries the response was YES. [2024-06-27 18:38:43,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1041 events. 554/1041 cut-off events. For 5194/5194 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5325 event pairs, 123 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 4392. Up to 855 conditions per place. [2024-06-27 18:38:43,748 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 100 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2024-06-27 18:38:43,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 131 transitions, 1203 flow [2024-06-27 18:38:43,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 18:38:43,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:38:43,749 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 778 flow. Second operand 8 states and 126 transitions. [2024-06-27 18:38:43,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 131 transitions, 1203 flow [2024-06-27 18:38:43,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1165 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:43,759 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 930 flow [2024-06-27 18:38:43,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-06-27 18:38:43,760 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2024-06-27 18:38:43,760 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 930 flow [2024-06-27 18:38:43,760 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 18:38:43,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:43,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:43,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:38:43,761 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 18:38:43,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash 849484551, now seen corresponding path program 1 times [2024-06-27 18:38:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808162390] [2024-06-27 18:38:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808162390] [2024-06-27 18:38:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808162390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:44,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421311812] [2024-06-27 18:38:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:44,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:44,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 930 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 18:38:44,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:44,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:44,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:44,771 INFO L124 PetriNetUnfolderBase]: 552/1035 cut-off events. [2024-06-27 18:38:44,772 INFO L125 PetriNetUnfolderBase]: For 5601/5601 co-relation queries the response was YES. [2024-06-27 18:38:44,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 1035 events. 552/1035 cut-off events. For 5601/5601 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5253 event pairs, 130 based on Foata normal form. 1/994 useless extension candidates. Maximal degree in co-relation 4539. Up to 825 conditions per place. [2024-06-27 18:38:44,777 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 106 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-06-27 18:38:44,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 135 transitions, 1288 flow [2024-06-27 18:38:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:44,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 18:38:44,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:38:44,779 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 930 flow. Second operand 7 states and 119 transitions. [2024-06-27 18:38:44,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 135 transitions, 1288 flow [2024-06-27 18:38:44,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 135 transitions, 1173 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:44,791 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 903 flow [2024-06-27 18:38:44,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=903, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2024-06-27 18:38:44,792 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2024-06-27 18:38:44,792 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 903 flow [2024-06-27 18:38:44,792 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 18:38:44,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:44,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:38:44,793 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 18:38:44,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:44,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1590440875, now seen corresponding path program 1 times [2024-06-27 18:38:44,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:44,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795276602] [2024-06-27 18:38:44,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:44,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:45,172 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 18:38:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795276602] [2024-06-27 18:38:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795276602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:45,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013647777] [2024-06-27 18:38:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:45,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:45,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:45,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:45,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:45,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:45,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 903 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 18:38:45,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:45,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:45,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:45,588 INFO L124 PetriNetUnfolderBase]: 572/1062 cut-off events. [2024-06-27 18:38:45,588 INFO L125 PetriNetUnfolderBase]: For 5973/5973 co-relation queries the response was YES. [2024-06-27 18:38:45,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 1062 events. 572/1062 cut-off events. For 5973/5973 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5376 event pairs, 129 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 4692. Up to 843 conditions per place. [2024-06-27 18:38:45,594 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 112 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2024-06-27 18:38:45,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 143 transitions, 1301 flow [2024-06-27 18:38:45,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:45,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:38:45,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:38:45,596 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 903 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:38:45,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 143 transitions, 1301 flow [2024-06-27 18:38:45,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 143 transitions, 1259 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:45,609 INFO L231 Difference]: Finished difference. Result has 101 places, 113 transitions, 957 flow [2024-06-27 18:38:45,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=957, PETRI_PLACES=101, PETRI_TRANSITIONS=113} [2024-06-27 18:38:45,609 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 62 predicate places. [2024-06-27 18:38:45,609 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 113 transitions, 957 flow [2024-06-27 18:38:45,610 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 18:38:45,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:45,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:38:45,610 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 18:38:45,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:45,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1594188775, now seen corresponding path program 2 times [2024-06-27 18:38:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:45,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547773856] [2024-06-27 18:38:45,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:45,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:46,004 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 18:38:46,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:46,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547773856] [2024-06-27 18:38:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547773856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615159736] [2024-06-27 18:38:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:46,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:46,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:46,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 113 transitions, 957 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 18:38:46,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:46,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:46,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:46,453 INFO L124 PetriNetUnfolderBase]: 692/1242 cut-off events. [2024-06-27 18:38:46,453 INFO L125 PetriNetUnfolderBase]: For 9024/9024 co-relation queries the response was YES. [2024-06-27 18:38:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 1242 events. 692/1242 cut-off events. For 9024/9024 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6337 event pairs, 123 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 5878. Up to 829 conditions per place. [2024-06-27 18:38:46,460 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 113 selfloop transitions, 39 changer transitions 0/158 dead transitions. [2024-06-27 18:38:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 158 transitions, 1585 flow [2024-06-27 18:38:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:38:46,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-06-27 18:38:46,462 INFO L175 Difference]: Start difference. First operand has 101 places, 113 transitions, 957 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:38:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 158 transitions, 1585 flow [2024-06-27 18:38:46,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 158 transitions, 1511 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:46,477 INFO L231 Difference]: Finished difference. Result has 105 places, 125 transitions, 1153 flow [2024-06-27 18:38:46,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1153, PETRI_PLACES=105, PETRI_TRANSITIONS=125} [2024-06-27 18:38:46,478 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2024-06-27 18:38:46,478 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 1153 flow [2024-06-27 18:38:46,478 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 18:38:46,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:46,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:38:46,479 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 18:38:46,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1594195533, now seen corresponding path program 1 times [2024-06-27 18:38:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916904134] [2024-06-27 18:38:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:46,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:46,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916904134] [2024-06-27 18:38:46,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916904134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:46,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866419303] [2024-06-27 18:38:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:46,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:46,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:47,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:47,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 1153 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 18:38:47,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:47,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:47,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:47,416 INFO L124 PetriNetUnfolderBase]: 688/1237 cut-off events. [2024-06-27 18:38:47,417 INFO L125 PetriNetUnfolderBase]: For 10608/10608 co-relation queries the response was YES. [2024-06-27 18:38:47,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 1237 events. 688/1237 cut-off events. For 10608/10608 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6289 event pairs, 119 based on Foata normal form. 3/1199 useless extension candidates. Maximal degree in co-relation 6244. Up to 849 conditions per place. [2024-06-27 18:38:47,426 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 112 selfloop transitions, 44 changer transitions 0/162 dead transitions. [2024-06-27 18:38:47,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 162 transitions, 1706 flow [2024-06-27 18:38:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:38:47,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-06-27 18:38:47,427 INFO L175 Difference]: Start difference. First operand has 105 places, 125 transitions, 1153 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:38:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 162 transitions, 1706 flow [2024-06-27 18:38:47,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 1634 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:47,452 INFO L231 Difference]: Finished difference. Result has 111 places, 132 transitions, 1317 flow [2024-06-27 18:38:47,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1317, PETRI_PLACES=111, PETRI_TRANSITIONS=132} [2024-06-27 18:38:47,452 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-06-27 18:38:47,452 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 132 transitions, 1317 flow [2024-06-27 18:38:47,453 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 18:38:47,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:47,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:47,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:38:47,453 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 18:38:47,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash 853243797, now seen corresponding path program 3 times [2024-06-27 18:38:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:47,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936261105] [2024-06-27 18:38:47,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:47,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:47,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:47,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936261105] [2024-06-27 18:38:47,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936261105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:47,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:47,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491505943] [2024-06-27 18:38:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:47,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:47,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:47,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:47,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 132 transitions, 1317 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 18:38:47,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:47,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:47,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:48,270 INFO L124 PetriNetUnfolderBase]: 679/1226 cut-off events. [2024-06-27 18:38:48,270 INFO L125 PetriNetUnfolderBase]: For 10758/10758 co-relation queries the response was YES. [2024-06-27 18:38:48,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6372 conditions, 1226 events. 679/1226 cut-off events. For 10758/10758 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6271 event pairs, 115 based on Foata normal form. 4/1188 useless extension candidates. Maximal degree in co-relation 6318. Up to 823 conditions per place. [2024-06-27 18:38:48,277 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 111 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-27 18:38:48,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 162 transitions, 1763 flow [2024-06-27 18:38:48,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:48,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:38:48,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2024-06-27 18:38:48,278 INFO L175 Difference]: Start difference. First operand has 111 places, 132 transitions, 1317 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:38:48,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 162 transitions, 1763 flow [2024-06-27 18:38:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 162 transitions, 1612 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:38:48,305 INFO L231 Difference]: Finished difference. Result has 114 places, 132 transitions, 1267 flow [2024-06-27 18:38:48,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1267, PETRI_PLACES=114, PETRI_TRANSITIONS=132} [2024-06-27 18:38:48,305 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 75 predicate places. [2024-06-27 18:38:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 132 transitions, 1267 flow [2024-06-27 18:38:48,306 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 18:38:48,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:48,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:48,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:38:48,306 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 18:38:48,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1467491699, now seen corresponding path program 2 times [2024-06-27 18:38:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012856216] [2024-06-27 18:38:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:48,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:48,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:48,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:48,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012856216] [2024-06-27 18:38:48,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012856216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:48,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:48,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:48,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680035255] [2024-06-27 18:38:48,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:48,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:48,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:48,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:48,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:48,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:48,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 132 transitions, 1267 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 18:38:48,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:48,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:48,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:49,422 INFO L124 PetriNetUnfolderBase]: 692/1243 cut-off events. [2024-06-27 18:38:49,422 INFO L125 PetriNetUnfolderBase]: For 10639/10639 co-relation queries the response was YES. [2024-06-27 18:38:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6398 conditions, 1243 events. 692/1243 cut-off events. For 10639/10639 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6333 event pairs, 129 based on Foata normal form. 1/1203 useless extension candidates. Maximal degree in co-relation 6343. Up to 1045 conditions per place. [2024-06-27 18:38:49,430 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 140 selfloop transitions, 23 changer transitions 0/169 dead transitions. [2024-06-27 18:38:49,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 169 transitions, 1760 flow [2024-06-27 18:38:49,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 18:38:49,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-27 18:38:49,431 INFO L175 Difference]: Start difference. First operand has 114 places, 132 transitions, 1267 flow. Second operand 9 states and 145 transitions. [2024-06-27 18:38:49,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 169 transitions, 1760 flow [2024-06-27 18:38:49,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 169 transitions, 1675 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:49,456 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1286 flow [2024-06-27 18:38:49,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1286, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2024-06-27 18:38:49,456 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 78 predicate places. [2024-06-27 18:38:49,457 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1286 flow [2024-06-27 18:38:49,457 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 18:38:49,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:49,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:38:49,457 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 18:38:49,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1541524721, now seen corresponding path program 4 times [2024-06-27 18:38:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835409280] [2024-06-27 18:38:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:49,876 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 18:38:49,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:49,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835409280] [2024-06-27 18:38:49,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835409280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:49,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:49,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:49,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307986954] [2024-06-27 18:38:49,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:49,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:49,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1286 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 18:38:49,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:49,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:49,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:50,266 INFO L124 PetriNetUnfolderBase]: 760/1348 cut-off events. [2024-06-27 18:38:50,266 INFO L125 PetriNetUnfolderBase]: For 13096/13096 co-relation queries the response was YES. [2024-06-27 18:38:50,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7099 conditions, 1348 events. 760/1348 cut-off events. For 13096/13096 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6910 event pairs, 143 based on Foata normal form. 4/1310 useless extension candidates. Maximal degree in co-relation 7043. Up to 1094 conditions per place. [2024-06-27 18:38:50,273 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 134 selfloop transitions, 33 changer transitions 0/173 dead transitions. [2024-06-27 18:38:50,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 173 transitions, 1933 flow [2024-06-27 18:38:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:38:50,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:38:50,275 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1286 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:38:50,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 173 transitions, 1933 flow [2024-06-27 18:38:50,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 173 transitions, 1828 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:50,302 INFO L231 Difference]: Finished difference. Result has 119 places, 146 transitions, 1451 flow [2024-06-27 18:38:50,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1451, PETRI_PLACES=119, PETRI_TRANSITIONS=146} [2024-06-27 18:38:50,303 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 80 predicate places. [2024-06-27 18:38:50,303 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 146 transitions, 1451 flow [2024-06-27 18:38:50,303 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 18:38:50,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:50,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:50,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:38:50,304 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 18:38:50,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1476069337, now seen corresponding path program 5 times [2024-06-27 18:38:50,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:50,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617595898] [2024-06-27 18:38:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:50,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617595898] [2024-06-27 18:38:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617595898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:50,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:50,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:50,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8537848] [2024-06-27 18:38:50,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:50,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:50,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:50,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:50,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:50,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:50,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 146 transitions, 1451 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 18:38:50,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:50,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:50,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:51,137 INFO L124 PetriNetUnfolderBase]: 804/1419 cut-off events. [2024-06-27 18:38:51,137 INFO L125 PetriNetUnfolderBase]: For 15959/15962 co-relation queries the response was YES. [2024-06-27 18:38:51,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7817 conditions, 1419 events. 804/1419 cut-off events. For 15959/15962 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7350 event pairs, 130 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 7759. Up to 737 conditions per place. [2024-06-27 18:38:51,144 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 110 selfloop transitions, 76 changer transitions 0/192 dead transitions. [2024-06-27 18:38:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 192 transitions, 2296 flow [2024-06-27 18:38:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:38:51,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-27 18:38:51,145 INFO L175 Difference]: Start difference. First operand has 119 places, 146 transitions, 1451 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:38:51,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 192 transitions, 2296 flow [2024-06-27 18:38:51,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 192 transitions, 2194 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:51,180 INFO L231 Difference]: Finished difference. Result has 125 places, 158 transitions, 1769 flow [2024-06-27 18:38:51,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1769, PETRI_PLACES=125, PETRI_TRANSITIONS=158} [2024-06-27 18:38:51,181 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2024-06-27 18:38:51,181 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 158 transitions, 1769 flow [2024-06-27 18:38:51,181 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 18:38:51,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:51,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:38:51,182 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 18:38:51,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:51,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1476062827, now seen corresponding path program 6 times [2024-06-27 18:38:51,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:51,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264547046] [2024-06-27 18:38:51,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:51,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:51,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:51,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264547046] [2024-06-27 18:38:51,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264547046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:51,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:51,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:51,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382253355] [2024-06-27 18:38:51,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:51,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:51,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:51,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:51,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:51,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 158 transitions, 1769 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 18:38:51,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:51,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:51,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:51,952 INFO L124 PetriNetUnfolderBase]: 798/1411 cut-off events. [2024-06-27 18:38:51,953 INFO L125 PetriNetUnfolderBase]: For 17146/17149 co-relation queries the response was YES. [2024-06-27 18:38:51,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8114 conditions, 1411 events. 798/1411 cut-off events. For 17146/17149 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7337 event pairs, 134 based on Foata normal form. 4/1371 useless extension candidates. Maximal degree in co-relation 8052. Up to 736 conditions per place. [2024-06-27 18:38:51,963 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 116 selfloop transitions, 71 changer transitions 0/193 dead transitions. [2024-06-27 18:38:51,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 193 transitions, 2445 flow [2024-06-27 18:38:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:38:51,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-06-27 18:38:51,964 INFO L175 Difference]: Start difference. First operand has 125 places, 158 transitions, 1769 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:38:51,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 193 transitions, 2445 flow [2024-06-27 18:38:52,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 193 transitions, 2231 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:52,041 INFO L231 Difference]: Finished difference. Result has 129 places, 158 transitions, 1705 flow [2024-06-27 18:38:52,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1705, PETRI_PLACES=129, PETRI_TRANSITIONS=158} [2024-06-27 18:38:52,042 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2024-06-27 18:38:52,042 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 158 transitions, 1705 flow [2024-06-27 18:38:52,042 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 18:38:52,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:52,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:52,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:38:52,043 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 18:38:52,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:52,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1476062579, now seen corresponding path program 3 times [2024-06-27 18:38:52,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:52,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907597794] [2024-06-27 18:38:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:52,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:52,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:52,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907597794] [2024-06-27 18:38:52,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907597794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:52,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:52,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:38:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515047108] [2024-06-27 18:38:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:52,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:38:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:38:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:38:52,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:52,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 158 transitions, 1705 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 18:38:52,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:52,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:52,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:52,940 INFO L124 PetriNetUnfolderBase]: 799/1412 cut-off events. [2024-06-27 18:38:52,941 INFO L125 PetriNetUnfolderBase]: For 14439/14454 co-relation queries the response was YES. [2024-06-27 18:38:52,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7799 conditions, 1412 events. 799/1412 cut-off events. For 14439/14454 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7369 event pairs, 139 based on Foata normal form. 11/1379 useless extension candidates. Maximal degree in co-relation 7736. Up to 1163 conditions per place. [2024-06-27 18:38:52,951 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 156 selfloop transitions, 34 changer transitions 0/196 dead transitions. [2024-06-27 18:38:52,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 196 transitions, 2360 flow [2024-06-27 18:38:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:52,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:38:52,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:38:52,954 INFO L175 Difference]: Start difference. First operand has 129 places, 158 transitions, 1705 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:38:52,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 196 transitions, 2360 flow [2024-06-27 18:38:52,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 196 transitions, 2140 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:52,992 INFO L231 Difference]: Finished difference. Result has 130 places, 163 transitions, 1684 flow [2024-06-27 18:38:52,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1684, PETRI_PLACES=130, PETRI_TRANSITIONS=163} [2024-06-27 18:38:52,992 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 91 predicate places. [2024-06-27 18:38:52,992 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 163 transitions, 1684 flow [2024-06-27 18:38:52,993 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 18:38:52,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:52,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:38:52,993 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 18:38:52,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1431036311, now seen corresponding path program 1 times [2024-06-27 18:38:52,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:52,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623365932] [2024-06-27 18:38:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:53,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:53,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623365932] [2024-06-27 18:38:53,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623365932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:53,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:53,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856927674] [2024-06-27 18:38:53,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:53,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:53,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 163 transitions, 1684 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 18:38:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:54,015 INFO L124 PetriNetUnfolderBase]: 887/1560 cut-off events. [2024-06-27 18:38:54,015 INFO L125 PetriNetUnfolderBase]: For 15801/15801 co-relation queries the response was YES. [2024-06-27 18:38:54,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8222 conditions, 1560 events. 887/1560 cut-off events. For 15801/15801 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8171 event pairs, 169 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 8159. Up to 1280 conditions per place. [2024-06-27 18:38:54,026 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 181 selfloop transitions, 36 changer transitions 0/223 dead transitions. [2024-06-27 18:38:54,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 223 transitions, 2475 flow [2024-06-27 18:38:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:38:54,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-27 18:38:54,038 INFO L175 Difference]: Start difference. First operand has 130 places, 163 transitions, 1684 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:38:54,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 223 transitions, 2475 flow [2024-06-27 18:38:54,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 223 transitions, 2355 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:54,112 INFO L231 Difference]: Finished difference. Result has 136 places, 184 transitions, 1909 flow [2024-06-27 18:38:54,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1909, PETRI_PLACES=136, PETRI_TRANSITIONS=184} [2024-06-27 18:38:54,113 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2024-06-27 18:38:54,113 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 184 transitions, 1909 flow [2024-06-27 18:38:54,113 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 18:38:54,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:54,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:38:54,114 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 18:38:54,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2056135191, now seen corresponding path program 2 times [2024-06-27 18:38:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:54,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915472797] [2024-06-27 18:38:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915472797] [2024-06-27 18:38:54,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915472797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:54,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:54,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:54,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554785242] [2024-06-27 18:38:54,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:54,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:54,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:54,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:54,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:54,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:54,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 184 transitions, 1909 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 18:38:54,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:54,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:54,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:55,211 INFO L124 PetriNetUnfolderBase]: 915/1603 cut-off events. [2024-06-27 18:38:55,211 INFO L125 PetriNetUnfolderBase]: For 17157/17157 co-relation queries the response was YES. [2024-06-27 18:38:55,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8745 conditions, 1603 events. 915/1603 cut-off events. For 17157/17157 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8400 event pairs, 124 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 8678. Up to 1270 conditions per place. [2024-06-27 18:38:55,220 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 173 selfloop transitions, 51 changer transitions 0/230 dead transitions. [2024-06-27 18:38:55,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 230 transitions, 2674 flow [2024-06-27 18:38:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:55,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:38:55,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-27 18:38:55,229 INFO L175 Difference]: Start difference. First operand has 136 places, 184 transitions, 1909 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:38:55,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 230 transitions, 2674 flow [2024-06-27 18:38:55,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 230 transitions, 2567 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:55,273 INFO L231 Difference]: Finished difference. Result has 143 places, 202 transitions, 2185 flow [2024-06-27 18:38:55,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2185, PETRI_PLACES=143, PETRI_TRANSITIONS=202} [2024-06-27 18:38:55,274 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 104 predicate places. [2024-06-27 18:38:55,274 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 202 transitions, 2185 flow [2024-06-27 18:38:55,274 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 18:38:55,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:55,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:38:55,275 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 18:38:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash -190449693, now seen corresponding path program 3 times [2024-06-27 18:38:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793988109] [2024-06-27 18:38:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793988109] [2024-06-27 18:38:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793988109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:55,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328557220] [2024-06-27 18:38:55,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:55,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:55,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:55,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 202 transitions, 2185 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 18:38:55,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:55,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:56,392 INFO L124 PetriNetUnfolderBase]: 930/1628 cut-off events. [2024-06-27 18:38:56,393 INFO L125 PetriNetUnfolderBase]: For 19263/19263 co-relation queries the response was YES. [2024-06-27 18:38:56,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1628 events. 930/1628 cut-off events. For 19263/19263 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8574 event pairs, 166 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 9109. Up to 1319 conditions per place. [2024-06-27 18:38:56,404 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 180 selfloop transitions, 47 changer transitions 0/233 dead transitions. [2024-06-27 18:38:56,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 233 transitions, 2791 flow [2024-06-27 18:38:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:38:56,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-27 18:38:56,416 INFO L175 Difference]: Start difference. First operand has 143 places, 202 transitions, 2185 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:38:56,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 233 transitions, 2791 flow [2024-06-27 18:38:56,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 233 transitions, 2706 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:56,469 INFO L231 Difference]: Finished difference. Result has 148 places, 204 transitions, 2244 flow [2024-06-27 18:38:56,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=148, PETRI_TRANSITIONS=204} [2024-06-27 18:38:56,472 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 109 predicate places. [2024-06-27 18:38:56,472 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 204 transitions, 2244 flow [2024-06-27 18:38:56,472 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 18:38:56,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:56,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:38:56,473 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 18:38:56,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -408121742, now seen corresponding path program 1 times [2024-06-27 18:38:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58947091] [2024-06-27 18:38:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:38:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58947091] [2024-06-27 18:38:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58947091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840119007] [2024-06-27 18:38:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:57,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:57,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:57,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 204 transitions, 2244 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 18:38:57,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:57,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:57,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:57,676 INFO L124 PetriNetUnfolderBase]: 1028/1782 cut-off events. [2024-06-27 18:38:57,676 INFO L125 PetriNetUnfolderBase]: For 22136/22136 co-relation queries the response was YES. [2024-06-27 18:38:57,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10290 conditions, 1782 events. 1028/1782 cut-off events. For 22136/22136 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9512 event pairs, 183 based on Foata normal form. 1/1735 useless extension candidates. Maximal degree in co-relation 10219. Up to 1443 conditions per place. [2024-06-27 18:38:57,688 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 191 selfloop transitions, 71 changer transitions 0/268 dead transitions. [2024-06-27 18:38:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 268 transitions, 3464 flow [2024-06-27 18:38:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:38:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-27 18:38:57,689 INFO L175 Difference]: Start difference. First operand has 148 places, 204 transitions, 2244 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:38:57,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 268 transitions, 3464 flow [2024-06-27 18:38:57,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 268 transitions, 3284 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:57,751 INFO L231 Difference]: Finished difference. Result has 155 places, 239 transitions, 2874 flow [2024-06-27 18:38:57,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2874, PETRI_PLACES=155, PETRI_TRANSITIONS=239} [2024-06-27 18:38:57,752 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 116 predicate places. [2024-06-27 18:38:57,752 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 239 transitions, 2874 flow [2024-06-27 18:38:57,752 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 18:38:57,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:57,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:57,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:38:57,753 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 18:38:57,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1571793156, now seen corresponding path program 2 times [2024-06-27 18:38:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:57,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739228131] [2024-06-27 18:38:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:57,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:58,164 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 18:38:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:58,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739228131] [2024-06-27 18:38:58,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739228131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:58,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:58,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932446441] [2024-06-27 18:38:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:58,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:58,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:58,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:58,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:58,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 18:38:58,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 239 transitions, 2874 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 18:38:58,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:58,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 18:38:58,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:58,642 INFO L124 PetriNetUnfolderBase]: 1182/2033 cut-off events. [2024-06-27 18:38:58,642 INFO L125 PetriNetUnfolderBase]: For 24132/24196 co-relation queries the response was YES. [2024-06-27 18:38:58,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12077 conditions, 2033 events. 1182/2033 cut-off events. For 24132/24196 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11147 event pairs, 169 based on Foata normal form. 65/2055 useless extension candidates. Maximal degree in co-relation 12001. Up to 1475 conditions per place. [2024-06-27 18:38:58,655 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 179 selfloop transitions, 104 changer transitions 0/318 dead transitions. [2024-06-27 18:38:58,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 318 transitions, 4284 flow [2024-06-27 18:38:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:38:58,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035714285714286 [2024-06-27 18:38:58,656 INFO L175 Difference]: Start difference. First operand has 155 places, 239 transitions, 2874 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:38:58,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 318 transitions, 4284 flow [2024-06-27 18:38:58,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 318 transitions, 4171 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:58,736 INFO L231 Difference]: Finished difference. Result has 164 places, 287 transitions, 3843 flow [2024-06-27 18:38:58,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3843, PETRI_PLACES=164, PETRI_TRANSITIONS=287} [2024-06-27 18:38:58,737 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-06-27 18:38:58,737 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 287 transitions, 3843 flow [2024-06-27 18:38:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 18:38:58,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:58,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:38:58,738 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 18:38:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash 589011222, now seen corresponding path program 3 times [2024-06-27 18:38:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:58,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430746534] [2024-06-27 18:38:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:59,168 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 18:38:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430746534] [2024-06-27 18:38:59,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430746534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:38:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54108967] [2024-06-27 18:38:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:59,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:38:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:38:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:38:59,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:38:59,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 287 transitions, 3843 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 18:38:59,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:59,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:38:59,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:59,757 INFO L124 PetriNetUnfolderBase]: 1359/2285 cut-off events. [2024-06-27 18:38:59,757 INFO L125 PetriNetUnfolderBase]: For 29942/29942 co-relation queries the response was YES. [2024-06-27 18:38:59,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14765 conditions, 2285 events. 1359/2285 cut-off events. For 29942/29942 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12495 event pairs, 210 based on Foata normal form. 1/2239 useless extension candidates. Maximal degree in co-relation 14684. Up to 1900 conditions per place. [2024-06-27 18:38:59,772 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 239 selfloop transitions, 113 changer transitions 0/358 dead transitions. [2024-06-27 18:38:59,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 358 transitions, 5371 flow [2024-06-27 18:38:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:38:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:38:59,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:38:59,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-27 18:38:59,774 INFO L175 Difference]: Start difference. First operand has 164 places, 287 transitions, 3843 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:38:59,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 358 transitions, 5371 flow [2024-06-27 18:38:59,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 358 transitions, 5245 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:59,886 INFO L231 Difference]: Finished difference. Result has 173 places, 328 transitions, 4795 flow [2024-06-27 18:38:59,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4795, PETRI_PLACES=173, PETRI_TRANSITIONS=328} [2024-06-27 18:38:59,886 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 134 predicate places. [2024-06-27 18:38:59,887 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 328 transitions, 4795 flow [2024-06-27 18:38:59,887 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 18:38:59,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:59,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:59,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:38:59,887 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 18:38:59,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:59,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1475738092, now seen corresponding path program 4 times [2024-06-27 18:38:59,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:59,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816636217] [2024-06-27 18:38:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:00,433 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 18:39:00,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:00,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816636217] [2024-06-27 18:39:00,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816636217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:00,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:00,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379121505] [2024-06-27 18:39:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:00,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:00,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:00,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 328 transitions, 4795 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 18:39:00,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:00,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:00,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:01,069 INFO L124 PetriNetUnfolderBase]: 1436/2396 cut-off events. [2024-06-27 18:39:01,069 INFO L125 PetriNetUnfolderBase]: For 35066/35066 co-relation queries the response was YES. [2024-06-27 18:39:01,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16379 conditions, 2396 events. 1436/2396 cut-off events. For 35066/35066 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13152 event pairs, 252 based on Foata normal form. 1/2351 useless extension candidates. Maximal degree in co-relation 16294. Up to 1966 conditions per place. [2024-06-27 18:39:01,090 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 267 selfloop transitions, 126 changer transitions 0/399 dead transitions. [2024-06-27 18:39:01,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 399 transitions, 6469 flow [2024-06-27 18:39:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:39:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 18:39:01,092 INFO L175 Difference]: Start difference. First operand has 173 places, 328 transitions, 4795 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:39:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 399 transitions, 6469 flow [2024-06-27 18:39:01,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 399 transitions, 6292 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:01,246 INFO L231 Difference]: Finished difference. Result has 180 places, 363 transitions, 5697 flow [2024-06-27 18:39:01,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4664, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5697, PETRI_PLACES=180, PETRI_TRANSITIONS=363} [2024-06-27 18:39:01,247 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2024-06-27 18:39:01,247 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 363 transitions, 5697 flow [2024-06-27 18:39:01,247 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 18:39:01,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:01,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:39:01,247 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 18:39:01,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1812472510, now seen corresponding path program 1 times [2024-06-27 18:39:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:01,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743902469] [2024-06-27 18:39:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:01,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743902469] [2024-06-27 18:39:01,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743902469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:01,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:01,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:01,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265501595] [2024-06-27 18:39:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:01,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:01,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 363 transitions, 5697 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:01,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:01,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:01,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:02,447 INFO L124 PetriNetUnfolderBase]: 1464/2457 cut-off events. [2024-06-27 18:39:02,447 INFO L125 PetriNetUnfolderBase]: For 40197/40197 co-relation queries the response was YES. [2024-06-27 18:39:02,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17074 conditions, 2457 events. 1464/2457 cut-off events. For 40197/40197 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13690 event pairs, 345 based on Foata normal form. 2/2411 useless extension candidates. Maximal degree in co-relation 16987. Up to 2213 conditions per place. [2024-06-27 18:39:02,468 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 376 selfloop transitions, 32 changer transitions 0/414 dead transitions. [2024-06-27 18:39:02,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 414 transitions, 6905 flow [2024-06-27 18:39:02,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:39:02,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-27 18:39:02,471 INFO L175 Difference]: Start difference. First operand has 180 places, 363 transitions, 5697 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:39:02,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 414 transitions, 6905 flow [2024-06-27 18:39:02,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 414 transitions, 6733 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:02,619 INFO L231 Difference]: Finished difference. Result has 189 places, 379 transitions, 5868 flow [2024-06-27 18:39:02,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5527, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5868, PETRI_PLACES=189, PETRI_TRANSITIONS=379} [2024-06-27 18:39:02,619 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 150 predicate places. [2024-06-27 18:39:02,619 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 379 transitions, 5868 flow [2024-06-27 18:39:02,620 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 18:39:02,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:02,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:02,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:39:02,620 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 18:39:02,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1809878445, now seen corresponding path program 4 times [2024-06-27 18:39:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:02,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020524772] [2024-06-27 18:39:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:02,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:03,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020524772] [2024-06-27 18:39:03,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020524772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:03,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:03,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:03,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195565054] [2024-06-27 18:39:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:03,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:03,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 379 transitions, 5868 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 18:39:03,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:03,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:03,937 INFO L124 PetriNetUnfolderBase]: 1489/2488 cut-off events. [2024-06-27 18:39:03,937 INFO L125 PetriNetUnfolderBase]: For 41943/41943 co-relation queries the response was YES. [2024-06-27 18:39:03,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17403 conditions, 2488 events. 1489/2488 cut-off events. For 41943/41943 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13757 event pairs, 216 based on Foata normal form. 2/2441 useless extension candidates. Maximal degree in co-relation 17311. Up to 2026 conditions per place. [2024-06-27 18:39:03,958 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 275 selfloop transitions, 141 changer transitions 0/422 dead transitions. [2024-06-27 18:39:03,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 422 transitions, 7059 flow [2024-06-27 18:39:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:03,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:39:03,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-27 18:39:03,960 INFO L175 Difference]: Start difference. First operand has 189 places, 379 transitions, 5868 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:39:03,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 422 transitions, 7059 flow [2024-06-27 18:39:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 422 transitions, 6953 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:04,121 INFO L231 Difference]: Finished difference. Result has 197 places, 390 transitions, 6362 flow [2024-06-27 18:39:04,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5762, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6362, PETRI_PLACES=197, PETRI_TRANSITIONS=390} [2024-06-27 18:39:04,122 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 158 predicate places. [2024-06-27 18:39:04,122 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 390 transitions, 6362 flow [2024-06-27 18:39:04,122 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 18:39:04,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:04,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:39:04,123 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 18:39:04,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2119545004, now seen corresponding path program 2 times [2024-06-27 18:39:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766556153] [2024-06-27 18:39:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:04,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766556153] [2024-06-27 18:39:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766556153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:04,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446579343] [2024-06-27 18:39:04,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:04,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:04,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:04,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:04,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:04,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 390 transitions, 6362 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 18:39:04,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:04,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:04,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:05,463 INFO L124 PetriNetUnfolderBase]: 1513/2538 cut-off events. [2024-06-27 18:39:05,463 INFO L125 PetriNetUnfolderBase]: For 45506/45506 co-relation queries the response was YES. [2024-06-27 18:39:05,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18215 conditions, 2538 events. 1513/2538 cut-off events. For 45506/45506 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14264 event pairs, 325 based on Foata normal form. 2/2492 useless extension candidates. Maximal degree in co-relation 18119. Up to 2235 conditions per place. [2024-06-27 18:39:05,489 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 380 selfloop transitions, 45 changer transitions 0/431 dead transitions. [2024-06-27 18:39:05,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 431 transitions, 7548 flow [2024-06-27 18:39:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:39:05,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-27 18:39:05,491 INFO L175 Difference]: Start difference. First operand has 197 places, 390 transitions, 6362 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:39:05,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 431 transitions, 7548 flow [2024-06-27 18:39:05,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 431 transitions, 7314 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:05,668 INFO L231 Difference]: Finished difference. Result has 202 places, 397 transitions, 6386 flow [2024-06-27 18:39:05,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6128, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6386, PETRI_PLACES=202, PETRI_TRANSITIONS=397} [2024-06-27 18:39:05,668 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 163 predicate places. [2024-06-27 18:39:05,669 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 397 transitions, 6386 flow [2024-06-27 18:39:05,669 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 18:39:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:05,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:39:05,669 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 18:39:05,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash 680547163, now seen corresponding path program 5 times [2024-06-27 18:39:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120504451] [2024-06-27 18:39:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:06,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120504451] [2024-06-27 18:39:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120504451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:06,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:06,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:06,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819486793] [2024-06-27 18:39:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:06,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:06,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:06,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 397 transitions, 6386 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 18:39:06,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:06,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:06,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:06,998 INFO L124 PetriNetUnfolderBase]: 1528/2553 cut-off events. [2024-06-27 18:39:06,999 INFO L125 PetriNetUnfolderBase]: For 46073/46073 co-relation queries the response was YES. [2024-06-27 18:39:07,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18292 conditions, 2553 events. 1528/2553 cut-off events. For 46073/46073 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14273 event pairs, 178 based on Foata normal form. 2/2506 useless extension candidates. Maximal degree in co-relation 18194. Up to 2016 conditions per place. [2024-06-27 18:39:07,020 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 268 selfloop transitions, 151 changer transitions 0/425 dead transitions. [2024-06-27 18:39:07,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 425 transitions, 7404 flow [2024-06-27 18:39:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:07,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:39:07,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-27 18:39:07,022 INFO L175 Difference]: Start difference. First operand has 202 places, 397 transitions, 6386 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:39:07,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 425 transitions, 7404 flow [2024-06-27 18:39:07,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 425 transitions, 7275 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:07,233 INFO L231 Difference]: Finished difference. Result has 205 places, 399 transitions, 6624 flow [2024-06-27 18:39:07,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6624, PETRI_PLACES=205, PETRI_TRANSITIONS=399} [2024-06-27 18:39:07,234 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2024-06-27 18:39:07,234 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 399 transitions, 6624 flow [2024-06-27 18:39:07,234 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 18:39:07,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:07,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:39:07,234 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 18:39:07,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1486701332, now seen corresponding path program 3 times [2024-06-27 18:39:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:07,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888086088] [2024-06-27 18:39:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:07,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:07,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:07,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888086088] [2024-06-27 18:39:07,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888086088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:07,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:07,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:07,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502620531] [2024-06-27 18:39:07,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:07,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:07,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:07,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:07,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:07,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:07,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 399 transitions, 6624 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 18:39:07,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:07,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:07,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:08,479 INFO L124 PetriNetUnfolderBase]: 1547/2606 cut-off events. [2024-06-27 18:39:08,480 INFO L125 PetriNetUnfolderBase]: For 49138/49138 co-relation queries the response was YES. [2024-06-27 18:39:08,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18816 conditions, 2606 events. 1547/2606 cut-off events. For 49138/49138 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14864 event pairs, 300 based on Foata normal form. 2/2555 useless extension candidates. Maximal degree in co-relation 18716. Up to 2267 conditions per place. [2024-06-27 18:39:08,504 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 386 selfloop transitions, 48 changer transitions 0/440 dead transitions. [2024-06-27 18:39:08,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 440 transitions, 7824 flow [2024-06-27 18:39:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:08,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:39:08,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2024-06-27 18:39:08,505 INFO L175 Difference]: Start difference. First operand has 205 places, 399 transitions, 6624 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:39:08,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 440 transitions, 7824 flow [2024-06-27 18:39:08,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 440 transitions, 7477 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:08,708 INFO L231 Difference]: Finished difference. Result has 208 places, 401 transitions, 6445 flow [2024-06-27 18:39:08,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6281, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6445, PETRI_PLACES=208, PETRI_TRANSITIONS=401} [2024-06-27 18:39:08,709 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 169 predicate places. [2024-06-27 18:39:08,709 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 401 transitions, 6445 flow [2024-06-27 18:39:08,709 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 18:39:08,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:08,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:08,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:39:08,709 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 18:39:08,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:08,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1486693613, now seen corresponding path program 1 times [2024-06-27 18:39:08,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:08,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759967928] [2024-06-27 18:39:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759967928] [2024-06-27 18:39:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759967928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:09,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:09,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:09,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969220920] [2024-06-27 18:39:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:09,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:09,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:09,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:09,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:09,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 401 transitions, 6445 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 18:39:09,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:09,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:09,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:09,937 INFO L124 PetriNetUnfolderBase]: 1567/2611 cut-off events. [2024-06-27 18:39:09,937 INFO L125 PetriNetUnfolderBase]: For 45570/45570 co-relation queries the response was YES. [2024-06-27 18:39:09,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18619 conditions, 2611 events. 1567/2611 cut-off events. For 45570/45570 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14690 event pairs, 213 based on Foata normal form. 2/2562 useless extension candidates. Maximal degree in co-relation 18518. Up to 1325 conditions per place. [2024-06-27 18:39:09,961 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 217 selfloop transitions, 218 changer transitions 0/441 dead transitions. [2024-06-27 18:39:09,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 441 transitions, 7741 flow [2024-06-27 18:39:09,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:09,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:39:09,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-27 18:39:09,962 INFO L175 Difference]: Start difference. First operand has 208 places, 401 transitions, 6445 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:39:09,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 441 transitions, 7741 flow [2024-06-27 18:39:10,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 441 transitions, 7591 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:10,184 INFO L231 Difference]: Finished difference. Result has 210 places, 404 transitions, 6785 flow [2024-06-27 18:39:10,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6299, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6785, PETRI_PLACES=210, PETRI_TRANSITIONS=404} [2024-06-27 18:39:10,184 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 171 predicate places. [2024-06-27 18:39:10,184 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 404 transitions, 6785 flow [2024-06-27 18:39:10,184 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 18:39:10,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:10,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:39:10,185 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 18:39:10,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1493851172, now seen corresponding path program 4 times [2024-06-27 18:39:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:10,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652747170] [2024-06-27 18:39:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:10,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:10,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:10,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:10,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652747170] [2024-06-27 18:39:10,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652747170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:10,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:10,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:10,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383646996] [2024-06-27 18:39:10,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:10,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:10,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:10,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:10,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:10,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:10,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 404 transitions, 6785 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 18:39:10,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:10,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:10,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:11,504 INFO L124 PetriNetUnfolderBase]: 1599/2682 cut-off events. [2024-06-27 18:39:11,504 INFO L125 PetriNetUnfolderBase]: For 50928/50928 co-relation queries the response was YES. [2024-06-27 18:39:11,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 2682 events. 1599/2682 cut-off events. For 50928/50928 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15331 event pairs, 410 based on Foata normal form. 2/2635 useless extension candidates. Maximal degree in co-relation 19299. Up to 2442 conditions per place. [2024-06-27 18:39:11,527 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 415 selfloop transitions, 24 changer transitions 0/445 dead transitions. [2024-06-27 18:39:11,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 445 transitions, 7966 flow [2024-06-27 18:39:11,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:11,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 18:39:11,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-27 18:39:11,528 INFO L175 Difference]: Start difference. First operand has 210 places, 404 transitions, 6785 flow. Second operand 9 states and 145 transitions. [2024-06-27 18:39:11,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 445 transitions, 7966 flow [2024-06-27 18:39:11,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 445 transitions, 7494 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:11,722 INFO L231 Difference]: Finished difference. Result has 213 places, 411 transitions, 6500 flow [2024-06-27 18:39:11,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6323, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6500, PETRI_PLACES=213, PETRI_TRANSITIONS=411} [2024-06-27 18:39:11,722 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 174 predicate places. [2024-06-27 18:39:11,722 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 411 transitions, 6500 flow [2024-06-27 18:39:11,722 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 18:39:11,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:11,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:11,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:39:11,723 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 18:39:11,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 881249529, now seen corresponding path program 2 times [2024-06-27 18:39:11,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:11,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551786410] [2024-06-27 18:39:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:11,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:12,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551786410] [2024-06-27 18:39:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551786410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:12,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006915793] [2024-06-27 18:39:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:12,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:12,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 411 transitions, 6500 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 18:39:12,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:12,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:12,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:13,065 INFO L124 PetriNetUnfolderBase]: 1595/2673 cut-off events. [2024-06-27 18:39:13,065 INFO L125 PetriNetUnfolderBase]: For 47548/47548 co-relation queries the response was YES. [2024-06-27 18:39:13,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18737 conditions, 2673 events. 1595/2673 cut-off events. For 47548/47548 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15247 event pairs, 412 based on Foata normal form. 2/2627 useless extension candidates. Maximal degree in co-relation 18633. Up to 2382 conditions per place. [2024-06-27 18:39:13,091 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 397 selfloop transitions, 39 changer transitions 0/442 dead transitions. [2024-06-27 18:39:13,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 442 transitions, 7590 flow [2024-06-27 18:39:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:39:13,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-27 18:39:13,092 INFO L175 Difference]: Start difference. First operand has 213 places, 411 transitions, 6500 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:39:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 442 transitions, 7590 flow [2024-06-27 18:39:13,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 442 transitions, 7465 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:13,323 INFO L231 Difference]: Finished difference. Result has 216 places, 413 transitions, 6488 flow [2024-06-27 18:39:13,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6384, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6488, PETRI_PLACES=216, PETRI_TRANSITIONS=413} [2024-06-27 18:39:13,324 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 177 predicate places. [2024-06-27 18:39:13,324 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 413 transitions, 6488 flow [2024-06-27 18:39:13,324 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 18:39:13,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:13,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:13,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:39:13,324 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 18:39:13,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1752725042, now seen corresponding path program 5 times [2024-06-27 18:39:13,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:13,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796308676] [2024-06-27 18:39:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:13,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796308676] [2024-06-27 18:39:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796308676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:13,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:13,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670671342] [2024-06-27 18:39:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:13,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:13,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:13,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:13,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 413 transitions, 6488 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 18:39:13,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:13,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:13,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:14,639 INFO L124 PetriNetUnfolderBase]: 1628/2735 cut-off events. [2024-06-27 18:39:14,639 INFO L125 PetriNetUnfolderBase]: For 49406/49406 co-relation queries the response was YES. [2024-06-27 18:39:14,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19094 conditions, 2735 events. 1628/2735 cut-off events. For 49406/49406 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 15722 event pairs, 406 based on Foata normal form. 2/2688 useless extension candidates. Maximal degree in co-relation 18989. Up to 2389 conditions per place. [2024-06-27 18:39:14,663 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 416 selfloop transitions, 39 changer transitions 0/461 dead transitions. [2024-06-27 18:39:14,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 461 transitions, 7850 flow [2024-06-27 18:39:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:14,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:39:14,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-27 18:39:14,664 INFO L175 Difference]: Start difference. First operand has 216 places, 413 transitions, 6488 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:39:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 461 transitions, 7850 flow [2024-06-27 18:39:14,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 461 transitions, 7758 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:14,881 INFO L231 Difference]: Finished difference. Result has 220 places, 420 transitions, 6663 flow [2024-06-27 18:39:14,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6402, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6663, PETRI_PLACES=220, PETRI_TRANSITIONS=420} [2024-06-27 18:39:14,881 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 181 predicate places. [2024-06-27 18:39:14,882 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 420 transitions, 6663 flow [2024-06-27 18:39:14,882 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 18:39:14,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:14,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:39:14,882 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 18:39:14,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1752398612, now seen corresponding path program 6 times [2024-06-27 18:39:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:14,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213477495] [2024-06-27 18:39:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213477495] [2024-06-27 18:39:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213477495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:15,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907063906] [2024-06-27 18:39:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:15,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:15,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:15,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 420 transitions, 6663 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 18:39:15,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:15,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:15,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:16,187 INFO L124 PetriNetUnfolderBase]: 1625/2733 cut-off events. [2024-06-27 18:39:16,187 INFO L125 PetriNetUnfolderBase]: For 49464/49464 co-relation queries the response was YES. [2024-06-27 18:39:16,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19108 conditions, 2733 events. 1625/2733 cut-off events. For 49464/49464 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15719 event pairs, 417 based on Foata normal form. 2/2685 useless extension candidates. Maximal degree in co-relation 19001. Up to 2442 conditions per place. [2024-06-27 18:39:16,212 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 417 selfloop transitions, 36 changer transitions 0/459 dead transitions. [2024-06-27 18:39:16,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 459 transitions, 7781 flow [2024-06-27 18:39:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:39:16,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-27 18:39:16,213 INFO L175 Difference]: Start difference. First operand has 220 places, 420 transitions, 6663 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:39:16,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 459 transitions, 7781 flow [2024-06-27 18:39:16,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 459 transitions, 7616 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:16,444 INFO L231 Difference]: Finished difference. Result has 224 places, 420 transitions, 6580 flow [2024-06-27 18:39:16,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6498, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6580, PETRI_PLACES=224, PETRI_TRANSITIONS=420} [2024-06-27 18:39:16,444 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 185 predicate places. [2024-06-27 18:39:16,444 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 420 transitions, 6580 flow [2024-06-27 18:39:16,445 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 18:39:16,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:16,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:16,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:39:16,445 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 18:39:16,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1486485851, now seen corresponding path program 6 times [2024-06-27 18:39:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211808608] [2024-06-27 18:39:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:16,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:16,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211808608] [2024-06-27 18:39:16,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211808608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:16,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:16,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:16,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333638266] [2024-06-27 18:39:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:16,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:16,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:17,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:17,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 420 transitions, 6580 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 18:39:17,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:17,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:17,644 INFO L124 PetriNetUnfolderBase]: 1625/2718 cut-off events. [2024-06-27 18:39:17,644 INFO L125 PetriNetUnfolderBase]: For 42882/42882 co-relation queries the response was YES. [2024-06-27 18:39:17,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18714 conditions, 2718 events. 1625/2718 cut-off events. For 42882/42882 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15550 event pairs, 161 based on Foata normal form. 2/2667 useless extension candidates. Maximal degree in co-relation 18605. Up to 2161 conditions per place. [2024-06-27 18:39:17,668 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 286 selfloop transitions, 155 changer transitions 0/447 dead transitions. [2024-06-27 18:39:17,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 447 transitions, 7654 flow [2024-06-27 18:39:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:39:17,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-27 18:39:17,670 INFO L175 Difference]: Start difference. First operand has 224 places, 420 transitions, 6580 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:39:17,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 447 transitions, 7654 flow [2024-06-27 18:39:17,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 447 transitions, 7588 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:17,958 INFO L231 Difference]: Finished difference. Result has 224 places, 422 transitions, 6889 flow [2024-06-27 18:39:17,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6514, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6889, PETRI_PLACES=224, PETRI_TRANSITIONS=422} [2024-06-27 18:39:17,959 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 185 predicate places. [2024-06-27 18:39:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 422 transitions, 6889 flow [2024-06-27 18:39:17,959 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 18:39:17,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:17,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:39:17,960 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 18:39:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1486491803, now seen corresponding path program 3 times [2024-06-27 18:39:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259579213] [2024-06-27 18:39:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:18,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259579213] [2024-06-27 18:39:18,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259579213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:18,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:18,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545207344] [2024-06-27 18:39:18,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:18,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:18,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:18,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:18,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:18,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:18,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 422 transitions, 6889 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 18:39:18,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:18,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:18,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:19,234 INFO L124 PetriNetUnfolderBase]: 1621/2708 cut-off events. [2024-06-27 18:39:19,234 INFO L125 PetriNetUnfolderBase]: For 45366/45366 co-relation queries the response was YES. [2024-06-27 18:39:19,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18987 conditions, 2708 events. 1621/2708 cut-off events. For 45366/45366 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 15412 event pairs, 220 based on Foata normal form. 2/2659 useless extension candidates. Maximal degree in co-relation 18877. Up to 1417 conditions per place. [2024-06-27 18:39:19,256 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 222 selfloop transitions, 230 changer transitions 0/458 dead transitions. [2024-06-27 18:39:19,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 458 transitions, 8035 flow [2024-06-27 18:39:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:39:19,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015873015873016 [2024-06-27 18:39:19,259 INFO L175 Difference]: Start difference. First operand has 224 places, 422 transitions, 6889 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:39:19,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 458 transitions, 8035 flow [2024-06-27 18:39:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 458 transitions, 7638 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:19,482 INFO L231 Difference]: Finished difference. Result has 227 places, 424 transitions, 6988 flow [2024-06-27 18:39:19,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6988, PETRI_PLACES=227, PETRI_TRANSITIONS=424} [2024-06-27 18:39:19,483 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 188 predicate places. [2024-06-27 18:39:19,483 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 424 transitions, 6988 flow [2024-06-27 18:39:19,483 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 18:39:19,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:19,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:19,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:39:19,484 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:19,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1827957044, now seen corresponding path program 1 times [2024-06-27 18:39:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081937910] [2024-06-27 18:39:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:19,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081937910] [2024-06-27 18:39:19,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081937910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:19,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:19,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:39:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491128925] [2024-06-27 18:39:19,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:39:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:39:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:39:19,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-06-27 18:39:19,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 424 transitions, 6988 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 18:39:19,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:19,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-06-27 18:39:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:19,832 INFO L124 PetriNetUnfolderBase]: 736/1429 cut-off events. [2024-06-27 18:39:19,832 INFO L125 PetriNetUnfolderBase]: For 29232/29551 co-relation queries the response was YES. [2024-06-27 18:39:19,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9175 conditions, 1429 events. 736/1429 cut-off events. For 29232/29551 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8533 event pairs, 151 based on Foata normal form. 272/1596 useless extension candidates. Maximal degree in co-relation 9065. Up to 445 conditions per place. [2024-06-27 18:39:19,845 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 98 selfloop transitions, 77 changer transitions 0/248 dead transitions. [2024-06-27 18:39:19,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 248 transitions, 4381 flow [2024-06-27 18:39:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:39:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:39:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-06-27 18:39:19,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-06-27 18:39:19,846 INFO L175 Difference]: Start difference. First operand has 227 places, 424 transitions, 6988 flow. Second operand 4 states and 93 transitions. [2024-06-27 18:39:19,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 248 transitions, 4381 flow [2024-06-27 18:39:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 248 transitions, 3754 flow, removed 25 selfloop flow, removed 36 redundant places. [2024-06-27 18:39:19,952 INFO L231 Difference]: Finished difference. Result has 196 places, 236 transitions, 3628 flow [2024-06-27 18:39:19,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3628, PETRI_PLACES=196, PETRI_TRANSITIONS=236} [2024-06-27 18:39:19,952 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2024-06-27 18:39:19,952 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 236 transitions, 3628 flow [2024-06-27 18:39:19,952 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 18:39:19,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:19,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:19,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:39:19,953 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 18:39:19,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:19,953 INFO L85 PathProgramCache]: Analyzing trace with hash -131938932, now seen corresponding path program 1 times [2024-06-27 18:39:19,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:19,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748668598] [2024-06-27 18:39:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:19,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:20,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:20,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748668598] [2024-06-27 18:39:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748668598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981715903] [2024-06-27 18:39:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:20,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:20,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:20,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:20,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:20,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 236 transitions, 3628 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 18:39:20,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:20,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:20,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:21,008 INFO L124 PetriNetUnfolderBase]: 996/1761 cut-off events. [2024-06-27 18:39:21,008 INFO L125 PetriNetUnfolderBase]: For 27028/27033 co-relation queries the response was YES. [2024-06-27 18:39:21,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11012 conditions, 1761 events. 996/1761 cut-off events. For 27028/27033 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9483 event pairs, 223 based on Foata normal form. 3/1650 useless extension candidates. Maximal degree in co-relation 10916. Up to 1476 conditions per place. [2024-06-27 18:39:21,021 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 214 selfloop transitions, 55 changer transitions 0/276 dead transitions. [2024-06-27 18:39:21,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 276 transitions, 4414 flow [2024-06-27 18:39:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:39:21,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-06-27 18:39:21,022 INFO L175 Difference]: Start difference. First operand has 196 places, 236 transitions, 3628 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:39:21,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 276 transitions, 4414 flow [2024-06-27 18:39:21,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 276 transitions, 4336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:21,151 INFO L231 Difference]: Finished difference. Result has 207 places, 247 transitions, 3849 flow [2024-06-27 18:39:21,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3849, PETRI_PLACES=207, PETRI_TRANSITIONS=247} [2024-06-27 18:39:21,151 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 168 predicate places. [2024-06-27 18:39:21,151 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 247 transitions, 3849 flow [2024-06-27 18:39:21,152 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 18:39:21,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:21,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:21,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:39:21,152 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 18:39:21,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2099619772, now seen corresponding path program 2 times [2024-06-27 18:39:21,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:21,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934942308] [2024-06-27 18:39:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:21,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:21,714 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 18:39:21,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:21,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934942308] [2024-06-27 18:39:21,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934942308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:21,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:21,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492512001] [2024-06-27 18:39:21,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:21,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:21,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:21,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:21,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 247 transitions, 3849 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 18:39:21,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:21,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:21,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:22,266 INFO L124 PetriNetUnfolderBase]: 1078/1906 cut-off events. [2024-06-27 18:39:22,266 INFO L125 PetriNetUnfolderBase]: For 29925/29930 co-relation queries the response was YES. [2024-06-27 18:39:22,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12162 conditions, 1906 events. 1078/1906 cut-off events. For 29925/29930 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 10503 event pairs, 156 based on Foata normal form. 3/1793 useless extension candidates. Maximal degree in co-relation 12061. Up to 1532 conditions per place. [2024-06-27 18:39:22,280 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 222 selfloop transitions, 65 changer transitions 0/294 dead transitions. [2024-06-27 18:39:22,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 294 transitions, 4801 flow [2024-06-27 18:39:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:22,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:39:22,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-06-27 18:39:22,282 INFO L175 Difference]: Start difference. First operand has 207 places, 247 transitions, 3849 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:39:22,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 294 transitions, 4801 flow [2024-06-27 18:39:22,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 294 transitions, 4601 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:22,423 INFO L231 Difference]: Finished difference. Result has 213 places, 264 transitions, 4090 flow [2024-06-27 18:39:22,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4090, PETRI_PLACES=213, PETRI_TRANSITIONS=264} [2024-06-27 18:39:22,424 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 174 predicate places. [2024-06-27 18:39:22,424 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 264 transitions, 4090 flow [2024-06-27 18:39:22,424 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 18:39:22,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:22,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:39:22,425 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 18:39:22,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1924601916, now seen corresponding path program 3 times [2024-06-27 18:39:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:22,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740116424] [2024-06-27 18:39:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:22,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:22,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740116424] [2024-06-27 18:39:22,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740116424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:22,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374503165] [2024-06-27 18:39:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:22,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:22,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:23,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:23,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 264 transitions, 4090 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 18:39:23,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:23,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:23,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:23,576 INFO L124 PetriNetUnfolderBase]: 1129/1997 cut-off events. [2024-06-27 18:39:23,576 INFO L125 PetriNetUnfolderBase]: For 34448/34453 co-relation queries the response was YES. [2024-06-27 18:39:23,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13054 conditions, 1997 events. 1129/1997 cut-off events. For 34448/34453 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11156 event pairs, 267 based on Foata normal form. 3/1884 useless extension candidates. Maximal degree in co-relation 12951. Up to 1642 conditions per place. [2024-06-27 18:39:23,592 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 213 selfloop transitions, 80 changer transitions 0/300 dead transitions. [2024-06-27 18:39:23,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 300 transitions, 5060 flow [2024-06-27 18:39:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:39:23,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:39:23,593 INFO L175 Difference]: Start difference. First operand has 213 places, 264 transitions, 4090 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:39:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 300 transitions, 5060 flow [2024-06-27 18:39:23,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 300 transitions, 4880 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:23,748 INFO L231 Difference]: Finished difference. Result has 218 places, 272 transitions, 4318 flow [2024-06-27 18:39:23,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3910, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4318, PETRI_PLACES=218, PETRI_TRANSITIONS=272} [2024-06-27 18:39:23,748 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 179 predicate places. [2024-06-27 18:39:23,749 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 272 transitions, 4318 flow [2024-06-27 18:39:23,749 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 18:39:23,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:23,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:23,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:39:23,749 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 18:39:23,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:23,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1796595370, now seen corresponding path program 4 times [2024-06-27 18:39:23,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:23,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540419052] [2024-06-27 18:39:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:23,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540419052] [2024-06-27 18:39:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540419052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:24,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:24,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325652989] [2024-06-27 18:39:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:24,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:24,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 272 transitions, 4318 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 18:39:24,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:24,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:24,933 INFO L124 PetriNetUnfolderBase]: 1126/1993 cut-off events. [2024-06-27 18:39:24,933 INFO L125 PetriNetUnfolderBase]: For 33942/33947 co-relation queries the response was YES. [2024-06-27 18:39:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13000 conditions, 1993 events. 1126/1993 cut-off events. For 33942/33947 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11119 event pairs, 277 based on Foata normal form. 3/1880 useless extension candidates. Maximal degree in co-relation 12895. Up to 1706 conditions per place. [2024-06-27 18:39:24,948 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 204 selfloop transitions, 86 changer transitions 0/297 dead transitions. [2024-06-27 18:39:24,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 297 transitions, 5016 flow [2024-06-27 18:39:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:24,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:39:24,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257142857142857 [2024-06-27 18:39:24,950 INFO L175 Difference]: Start difference. First operand has 218 places, 272 transitions, 4318 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:39:24,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 297 transitions, 5016 flow [2024-06-27 18:39:25,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 297 transitions, 4763 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:25,122 INFO L231 Difference]: Finished difference. Result has 222 places, 272 transitions, 4251 flow [2024-06-27 18:39:25,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4251, PETRI_PLACES=222, PETRI_TRANSITIONS=272} [2024-06-27 18:39:25,122 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 183 predicate places. [2024-06-27 18:39:25,122 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 272 transitions, 4251 flow [2024-06-27 18:39:25,122 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 18:39:25,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:25,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:25,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:39:25,123 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 18:39:25,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1714899650, now seen corresponding path program 1 times [2024-06-27 18:39:25,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:25,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017778347] [2024-06-27 18:39:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:25,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:25,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017778347] [2024-06-27 18:39:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017778347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:25,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:25,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:25,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483470522] [2024-06-27 18:39:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:25,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:25,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:25,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:25,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:25,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:25,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 272 transitions, 4251 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 18:39:25,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:25,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:25,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:26,252 INFO L124 PetriNetUnfolderBase]: 1223/2168 cut-off events. [2024-06-27 18:39:26,252 INFO L125 PetriNetUnfolderBase]: For 42191/42196 co-relation queries the response was YES. [2024-06-27 18:39:26,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13701 conditions, 2168 events. 1223/2168 cut-off events. For 42191/42196 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12366 event pairs, 276 based on Foata normal form. 15/2061 useless extension candidates. Maximal degree in co-relation 13594. Up to 1770 conditions per place. [2024-06-27 18:39:26,273 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 241 selfloop transitions, 61 changer transitions 0/309 dead transitions. [2024-06-27 18:39:26,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 309 transitions, 5105 flow [2024-06-27 18:39:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:39:26,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 18:39:26,275 INFO L175 Difference]: Start difference. First operand has 222 places, 272 transitions, 4251 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:39:26,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 309 transitions, 5105 flow [2024-06-27 18:39:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 309 transitions, 4834 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:26,449 INFO L231 Difference]: Finished difference. Result has 225 places, 276 transitions, 4203 flow [2024-06-27 18:39:26,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4203, PETRI_PLACES=225, PETRI_TRANSITIONS=276} [2024-06-27 18:39:26,450 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 186 predicate places. [2024-06-27 18:39:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 276 transitions, 4203 flow [2024-06-27 18:39:26,451 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 18:39:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:26,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:39:26,451 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 18:39:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash -899841502, now seen corresponding path program 5 times [2024-06-27 18:39:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262501496] [2024-06-27 18:39:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:27,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:27,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262501496] [2024-06-27 18:39:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262501496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627429337] [2024-06-27 18:39:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:27,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:27,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:27,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:27,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 276 transitions, 4203 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 18:39:27,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:27,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:27,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:27,624 INFO L124 PetriNetUnfolderBase]: 1258/2227 cut-off events. [2024-06-27 18:39:27,624 INFO L125 PetriNetUnfolderBase]: For 35532/35536 co-relation queries the response was YES. [2024-06-27 18:39:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14029 conditions, 2227 events. 1258/2227 cut-off events. For 35532/35536 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12816 event pairs, 270 based on Foata normal form. 3/2101 useless extension candidates. Maximal degree in co-relation 13920. Up to 1907 conditions per place. [2024-06-27 18:39:27,643 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 242 selfloop transitions, 61 changer transitions 0/310 dead transitions. [2024-06-27 18:39:27,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 310 transitions, 5037 flow [2024-06-27 18:39:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:39:27,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:39:27,644 INFO L175 Difference]: Start difference. First operand has 225 places, 276 transitions, 4203 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:39:27,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 310 transitions, 5037 flow [2024-06-27 18:39:27,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 310 transitions, 4921 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:27,817 INFO L231 Difference]: Finished difference. Result has 230 places, 282 transitions, 4330 flow [2024-06-27 18:39:27,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4330, PETRI_PLACES=230, PETRI_TRANSITIONS=282} [2024-06-27 18:39:27,818 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 191 predicate places. [2024-06-27 18:39:27,818 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 282 transitions, 4330 flow [2024-06-27 18:39:27,818 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 18:39:27,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:27,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:39:27,818 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 18:39:27,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 100960130, now seen corresponding path program 6 times [2024-06-27 18:39:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:27,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042407365] [2024-06-27 18:39:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:27,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:28,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042407365] [2024-06-27 18:39:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042407365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698531614] [2024-06-27 18:39:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:28,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:28,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 282 transitions, 4330 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 18:39:28,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:28,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:29,000 INFO L124 PetriNetUnfolderBase]: 1294/2293 cut-off events. [2024-06-27 18:39:29,001 INFO L125 PetriNetUnfolderBase]: For 37078/37082 co-relation queries the response was YES. [2024-06-27 18:39:29,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 2293 events. 1294/2293 cut-off events. For 37078/37082 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13282 event pairs, 321 based on Foata normal form. 3/2168 useless extension candidates. Maximal degree in co-relation 14382. Up to 2012 conditions per place. [2024-06-27 18:39:29,022 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 228 selfloop transitions, 76 changer transitions 0/311 dead transitions. [2024-06-27 18:39:29,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 311 transitions, 5156 flow [2024-06-27 18:39:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:39:29,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 18:39:29,023 INFO L175 Difference]: Start difference. First operand has 230 places, 282 transitions, 4330 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:39:29,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 311 transitions, 5156 flow [2024-06-27 18:39:29,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 311 transitions, 4970 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:29,217 INFO L231 Difference]: Finished difference. Result has 231 places, 287 transitions, 4421 flow [2024-06-27 18:39:29,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4421, PETRI_PLACES=231, PETRI_TRANSITIONS=287} [2024-06-27 18:39:29,218 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 192 predicate places. [2024-06-27 18:39:29,218 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 287 transitions, 4421 flow [2024-06-27 18:39:29,218 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 18:39:29,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:29,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:29,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:39:29,218 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:29,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash -949229142, now seen corresponding path program 7 times [2024-06-27 18:39:29,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:29,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640356880] [2024-06-27 18:39:29,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:29,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640356880] [2024-06-27 18:39:29,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640356880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:29,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:29,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200760357] [2024-06-27 18:39:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:29,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:29,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:29,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:29,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 287 transitions, 4421 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 18:39:29,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:29,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:30,454 INFO L124 PetriNetUnfolderBase]: 1346/2388 cut-off events. [2024-06-27 18:39:30,454 INFO L125 PetriNetUnfolderBase]: For 39053/39057 co-relation queries the response was YES. [2024-06-27 18:39:30,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15003 conditions, 2388 events. 1346/2388 cut-off events. For 39053/39057 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14072 event pairs, 324 based on Foata normal form. 3/2262 useless extension candidates. Maximal degree in co-relation 14892. Up to 2022 conditions per place. [2024-06-27 18:39:30,475 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 237 selfloop transitions, 77 changer transitions 0/321 dead transitions. [2024-06-27 18:39:30,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 321 transitions, 5293 flow [2024-06-27 18:39:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:39:30,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:39:30,477 INFO L175 Difference]: Start difference. First operand has 231 places, 287 transitions, 4421 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:39:30,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 321 transitions, 5293 flow [2024-06-27 18:39:30,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 321 transitions, 5100 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:30,710 INFO L231 Difference]: Finished difference. Result has 235 places, 295 transitions, 4546 flow [2024-06-27 18:39:30,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4228, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4546, PETRI_PLACES=235, PETRI_TRANSITIONS=295} [2024-06-27 18:39:30,710 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 196 predicate places. [2024-06-27 18:39:30,711 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 295 transitions, 4546 flow [2024-06-27 18:39:30,711 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 18:39:30,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:30,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:30,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:39:30,711 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 18:39:30,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1794664308, now seen corresponding path program 2 times [2024-06-27 18:39:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:30,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219882724] [2024-06-27 18:39:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:30,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219882724] [2024-06-27 18:39:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219882724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:31,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:31,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417337027] [2024-06-27 18:39:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:31,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:31,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:31,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:31,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:31,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 295 transitions, 4546 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 18:39:31,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:31,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:31,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:32,004 INFO L124 PetriNetUnfolderBase]: 1490/2660 cut-off events. [2024-06-27 18:39:32,005 INFO L125 PetriNetUnfolderBase]: For 52902/52906 co-relation queries the response was YES. [2024-06-27 18:39:32,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16462 conditions, 2660 events. 1490/2660 cut-off events. For 52902/52906 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16171 event pairs, 389 based on Foata normal form. 11/2532 useless extension candidates. Maximal degree in co-relation 16349. Up to 2176 conditions per place. [2024-06-27 18:39:32,025 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 261 selfloop transitions, 67 changer transitions 0/335 dead transitions. [2024-06-27 18:39:32,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 335 transitions, 5523 flow [2024-06-27 18:39:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:39:32,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43116883116883115 [2024-06-27 18:39:32,026 INFO L175 Difference]: Start difference. First operand has 235 places, 295 transitions, 4546 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:39:32,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 335 transitions, 5523 flow [2024-06-27 18:39:32,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 335 transitions, 5323 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:32,235 INFO L231 Difference]: Finished difference. Result has 241 places, 305 transitions, 4698 flow [2024-06-27 18:39:32,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4349, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4698, PETRI_PLACES=241, PETRI_TRANSITIONS=305} [2024-06-27 18:39:32,235 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2024-06-27 18:39:32,235 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 305 transitions, 4698 flow [2024-06-27 18:39:32,236 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 18:39:32,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:32,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:39:32,236 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 18:39:32,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:32,236 INFO L85 PathProgramCache]: Analyzing trace with hash 271662560, now seen corresponding path program 8 times [2024-06-27 18:39:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:32,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477638477] [2024-06-27 18:39:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:32,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:32,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477638477] [2024-06-27 18:39:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477638477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:32,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:32,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:32,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968407977] [2024-06-27 18:39:32,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:32,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:32,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:32,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:32,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:32,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 305 transitions, 4698 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 18:39:32,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:32,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:32,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:33,390 INFO L124 PetriNetUnfolderBase]: 1513/2698 cut-off events. [2024-06-27 18:39:33,390 INFO L125 PetriNetUnfolderBase]: For 45733/45737 co-relation queries the response was YES. [2024-06-27 18:39:33,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16815 conditions, 2698 events. 1513/2698 cut-off events. For 45733/45737 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16466 event pairs, 393 based on Foata normal form. 3/2553 useless extension candidates. Maximal degree in co-relation 16699. Up to 2254 conditions per place. [2024-06-27 18:39:33,410 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 235 selfloop transitions, 93 changer transitions 0/335 dead transitions. [2024-06-27 18:39:33,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 335 transitions, 5599 flow [2024-06-27 18:39:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:39:33,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:39:33,412 INFO L175 Difference]: Start difference. First operand has 241 places, 305 transitions, 4698 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:39:33,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 335 transitions, 5599 flow [2024-06-27 18:39:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 335 transitions, 5510 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:33,653 INFO L231 Difference]: Finished difference. Result has 250 places, 311 transitions, 5013 flow [2024-06-27 18:39:33,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4609, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5013, PETRI_PLACES=250, PETRI_TRANSITIONS=311} [2024-06-27 18:39:33,653 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 211 predicate places. [2024-06-27 18:39:33,653 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 311 transitions, 5013 flow [2024-06-27 18:39:33,653 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 18:39:33,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:33,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:33,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:39:33,654 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 18:39:33,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 345394014, now seen corresponding path program 9 times [2024-06-27 18:39:33,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:33,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037670512] [2024-06-27 18:39:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:33,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:34,219 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 18:39:34,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:34,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037670512] [2024-06-27 18:39:34,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037670512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:34,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:34,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:34,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685913772] [2024-06-27 18:39:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:34,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:34,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:34,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:34,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 311 transitions, 5013 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 18:39:34,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:34,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:34,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:35,046 INFO L124 PetriNetUnfolderBase]: 1629/2914 cut-off events. [2024-06-27 18:39:35,046 INFO L125 PetriNetUnfolderBase]: For 70142/70146 co-relation queries the response was YES. [2024-06-27 18:39:35,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19194 conditions, 2914 events. 1629/2914 cut-off events. For 70142/70146 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18210 event pairs, 434 based on Foata normal form. 3/2770 useless extension candidates. Maximal degree in co-relation 19074. Up to 2248 conditions per place. [2024-06-27 18:39:35,067 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 241 selfloop transitions, 98 changer transitions 0/346 dead transitions. [2024-06-27 18:39:35,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 346 transitions, 6131 flow [2024-06-27 18:39:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:39:35,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46285714285714286 [2024-06-27 18:39:35,068 INFO L175 Difference]: Start difference. First operand has 250 places, 311 transitions, 5013 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:39:35,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 346 transitions, 6131 flow [2024-06-27 18:39:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 346 transitions, 5938 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:35,410 INFO L231 Difference]: Finished difference. Result has 255 places, 315 transitions, 5205 flow [2024-06-27 18:39:35,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5205, PETRI_PLACES=255, PETRI_TRANSITIONS=315} [2024-06-27 18:39:35,410 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 216 predicate places. [2024-06-27 18:39:35,411 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 315 transitions, 5205 flow [2024-06-27 18:39:35,411 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 18:39:35,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:35,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:35,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:39:35,411 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 18:39:35,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 345578588, now seen corresponding path program 3 times [2024-06-27 18:39:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517045922] [2024-06-27 18:39:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:35,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:35,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517045922] [2024-06-27 18:39:35,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517045922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:35,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:35,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:35,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345059845] [2024-06-27 18:39:35,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:35,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:35,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:35,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:36,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:36,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 315 transitions, 5205 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 18:39:36,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:36,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:36,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:36,764 INFO L124 PetriNetUnfolderBase]: 1710/3063 cut-off events. [2024-06-27 18:39:36,764 INFO L125 PetriNetUnfolderBase]: For 85917/85921 co-relation queries the response was YES. [2024-06-27 18:39:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20049 conditions, 3063 events. 1710/3063 cut-off events. For 85917/85921 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19421 event pairs, 475 based on Foata normal form. 11/2920 useless extension candidates. Maximal degree in co-relation 19928. Up to 2464 conditions per place. [2024-06-27 18:39:36,793 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 247 selfloop transitions, 95 changer transitions 0/349 dead transitions. [2024-06-27 18:39:36,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 349 transitions, 6147 flow [2024-06-27 18:39:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:39:36,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44415584415584414 [2024-06-27 18:39:36,794 INFO L175 Difference]: Start difference. First operand has 255 places, 315 transitions, 5205 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:39:36,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 349 transitions, 6147 flow [2024-06-27 18:39:37,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 349 transitions, 5921 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:37,244 INFO L231 Difference]: Finished difference. Result has 260 places, 318 transitions, 5274 flow [2024-06-27 18:39:37,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4981, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5274, PETRI_PLACES=260, PETRI_TRANSITIONS=318} [2024-06-27 18:39:37,244 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 221 predicate places. [2024-06-27 18:39:37,244 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 318 transitions, 5274 flow [2024-06-27 18:39:37,245 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 18:39:37,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:37,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:37,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:39:37,245 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 18:39:37,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash 351827754, now seen corresponding path program 10 times [2024-06-27 18:39:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579948691] [2024-06-27 18:39:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:37,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579948691] [2024-06-27 18:39:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579948691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:37,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703554328] [2024-06-27 18:39:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:37,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:37,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:37,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 318 transitions, 5274 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 18:39:37,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:37,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:38,704 INFO L124 PetriNetUnfolderBase]: 1694/3035 cut-off events. [2024-06-27 18:39:38,705 INFO L125 PetriNetUnfolderBase]: For 70367/70371 co-relation queries the response was YES. [2024-06-27 18:39:38,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19217 conditions, 3035 events. 1694/3035 cut-off events. For 70367/70371 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19206 event pairs, 449 based on Foata normal form. 13/2894 useless extension candidates. Maximal degree in co-relation 19094. Up to 2448 conditions per place. [2024-06-27 18:39:38,735 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 231 selfloop transitions, 108 changer transitions 0/346 dead transitions. [2024-06-27 18:39:38,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 346 transitions, 6098 flow [2024-06-27 18:39:38,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:38,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:39:38,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-27 18:39:38,736 INFO L175 Difference]: Start difference. First operand has 260 places, 318 transitions, 5274 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:39:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 346 transitions, 6098 flow [2024-06-27 18:39:39,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 346 transitions, 5817 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:39,161 INFO L231 Difference]: Finished difference. Result has 262 places, 318 transitions, 5216 flow [2024-06-27 18:39:39,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4993, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5216, PETRI_PLACES=262, PETRI_TRANSITIONS=318} [2024-06-27 18:39:39,162 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 223 predicate places. [2024-06-27 18:39:39,162 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 318 transitions, 5216 flow [2024-06-27 18:39:39,162 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 18:39:39,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:39,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:39,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:39:39,163 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 18:39:39,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash 352073708, now seen corresponding path program 4 times [2024-06-27 18:39:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287472171] [2024-06-27 18:39:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:39,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287472171] [2024-06-27 18:39:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287472171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:39,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402699929] [2024-06-27 18:39:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:39,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:39,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:39,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:39,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:39,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:39,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 318 transitions, 5216 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 18:39:39,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:39,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:40,496 INFO L124 PetriNetUnfolderBase]: 1827/3290 cut-off events. [2024-06-27 18:39:40,497 INFO L125 PetriNetUnfolderBase]: For 80687/80691 co-relation queries the response was YES. [2024-06-27 18:39:40,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20735 conditions, 3290 events. 1827/3290 cut-off events. For 80687/80691 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21244 event pairs, 473 based on Foata normal form. 9/3164 useless extension candidates. Maximal degree in co-relation 20611. Up to 1732 conditions per place. [2024-06-27 18:39:40,529 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 228 selfloop transitions, 119 changer transitions 0/354 dead transitions. [2024-06-27 18:39:40,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 354 transitions, 6312 flow [2024-06-27 18:39:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:39:40,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46285714285714286 [2024-06-27 18:39:40,531 INFO L175 Difference]: Start difference. First operand has 262 places, 318 transitions, 5216 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:39:40,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 354 transitions, 6312 flow [2024-06-27 18:39:40,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 354 transitions, 6128 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:40,869 INFO L231 Difference]: Finished difference. Result has 264 places, 320 transitions, 5392 flow [2024-06-27 18:39:40,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5032, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5392, PETRI_PLACES=264, PETRI_TRANSITIONS=320} [2024-06-27 18:39:40,870 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 225 predicate places. [2024-06-27 18:39:40,870 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 320 transitions, 5392 flow [2024-06-27 18:39:40,870 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 18:39:40,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:40,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:40,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:39:40,870 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 18:39:40,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:40,871 INFO L85 PathProgramCache]: Analyzing trace with hash 278098594, now seen corresponding path program 5 times [2024-06-27 18:39:40,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:40,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32487232] [2024-06-27 18:39:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32487232] [2024-06-27 18:39:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32487232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158600895] [2024-06-27 18:39:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:41,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:41,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:41,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 320 transitions, 5392 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 18:39:41,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:41,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:41,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:42,366 INFO L124 PetriNetUnfolderBase]: 1883/3396 cut-off events. [2024-06-27 18:39:42,367 INFO L125 PetriNetUnfolderBase]: For 87350/87354 co-relation queries the response was YES. [2024-06-27 18:39:42,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21455 conditions, 3396 events. 1883/3396 cut-off events. For 87350/87354 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22213 event pairs, 547 based on Foata normal form. 11/3249 useless extension candidates. Maximal degree in co-relation 21330. Up to 2660 conditions per place. [2024-06-27 18:39:42,402 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 237 selfloop transitions, 110 changer transitions 0/354 dead transitions. [2024-06-27 18:39:42,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 354 transitions, 6352 flow [2024-06-27 18:39:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:42,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:39:42,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-27 18:39:42,404 INFO L175 Difference]: Start difference. First operand has 264 places, 320 transitions, 5392 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:39:42,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 354 transitions, 6352 flow [2024-06-27 18:39:42,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 354 transitions, 6146 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:42,835 INFO L231 Difference]: Finished difference. Result has 269 places, 323 transitions, 5521 flow [2024-06-27 18:39:42,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5194, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5521, PETRI_PLACES=269, PETRI_TRANSITIONS=323} [2024-06-27 18:39:42,836 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 230 predicate places. [2024-06-27 18:39:42,836 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 323 transitions, 5521 flow [2024-06-27 18:39:42,836 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 18:39:42,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:42,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:39:42,837 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 18:39:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -684317556, now seen corresponding path program 11 times [2024-06-27 18:39:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237867995] [2024-06-27 18:39:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:43,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237867995] [2024-06-27 18:39:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237867995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:43,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379276443] [2024-06-27 18:39:43,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:43,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:43,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 323 transitions, 5521 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 18:39:43,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:43,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:43,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:44,302 INFO L124 PetriNetUnfolderBase]: 1899/3427 cut-off events. [2024-06-27 18:39:44,303 INFO L125 PetriNetUnfolderBase]: For 76047/76051 co-relation queries the response was YES. [2024-06-27 18:39:44,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21868 conditions, 3427 events. 1899/3427 cut-off events. For 76047/76051 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22477 event pairs, 562 based on Foata normal form. 3/3268 useless extension candidates. Maximal degree in co-relation 21741. Up to 2838 conditions per place. [2024-06-27 18:39:44,338 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 263 selfloop transitions, 81 changer transitions 0/351 dead transitions. [2024-06-27 18:39:44,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 351 transitions, 6433 flow [2024-06-27 18:39:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 18:39:44,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-27 18:39:44,339 INFO L175 Difference]: Start difference. First operand has 269 places, 323 transitions, 5521 flow. Second operand 9 states and 138 transitions. [2024-06-27 18:39:44,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 351 transitions, 6433 flow [2024-06-27 18:39:44,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 351 transitions, 6167 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:44,740 INFO L231 Difference]: Finished difference. Result has 269 places, 325 transitions, 5542 flow [2024-06-27 18:39:44,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5255, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5542, PETRI_PLACES=269, PETRI_TRANSITIONS=325} [2024-06-27 18:39:44,741 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 230 predicate places. [2024-06-27 18:39:44,741 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 325 transitions, 5542 flow [2024-06-27 18:39:44,741 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 18:39:44,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:44,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:44,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:39:44,741 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 18:39:44,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash -599293236, now seen corresponding path program 12 times [2024-06-27 18:39:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:44,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006393048] [2024-06-27 18:39:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:44,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006393048] [2024-06-27 18:39:45,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006393048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:45,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:45,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:45,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591266570] [2024-06-27 18:39:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:45,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:45,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:45,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:45,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:45,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 325 transitions, 5542 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 18:39:45,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:45,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:45,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:46,201 INFO L124 PetriNetUnfolderBase]: 1915/3461 cut-off events. [2024-06-27 18:39:46,201 INFO L125 PetriNetUnfolderBase]: For 75909/75913 co-relation queries the response was YES. [2024-06-27 18:39:46,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22125 conditions, 3461 events. 1915/3461 cut-off events. For 75909/75913 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22883 event pairs, 646 based on Foata normal form. 3/3310 useless extension candidates. Maximal degree in co-relation 21998. Up to 2978 conditions per place. [2024-06-27 18:39:46,236 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 228 selfloop transitions, 115 changer transitions 0/350 dead transitions. [2024-06-27 18:39:46,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 350 transitions, 6442 flow [2024-06-27 18:39:46,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:46,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 18:39:46,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 18:39:46,237 INFO L175 Difference]: Start difference. First operand has 269 places, 325 transitions, 5542 flow. Second operand 9 states and 135 transitions. [2024-06-27 18:39:46,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 350 transitions, 6442 flow [2024-06-27 18:39:46,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 350 transitions, 6219 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:46,711 INFO L231 Difference]: Finished difference. Result has 271 places, 327 transitions, 5686 flow [2024-06-27 18:39:46,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5319, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5686, PETRI_PLACES=271, PETRI_TRANSITIONS=327} [2024-06-27 18:39:46,712 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 232 predicate places. [2024-06-27 18:39:46,712 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 327 transitions, 5686 flow [2024-06-27 18:39:46,713 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 18:39:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:46,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:46,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:39:46,713 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 18:39:46,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 850094692, now seen corresponding path program 13 times [2024-06-27 18:39:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753839370] [2024-06-27 18:39:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:47,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753839370] [2024-06-27 18:39:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753839370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083700465] [2024-06-27 18:39:47,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:47,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:47,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 327 transitions, 5686 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 18:39:47,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:47,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:48,316 INFO L124 PetriNetUnfolderBase]: 2011/3631 cut-off events. [2024-06-27 18:39:48,316 INFO L125 PetriNetUnfolderBase]: For 79217/79220 co-relation queries the response was YES. [2024-06-27 18:39:48,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23248 conditions, 3631 events. 2011/3631 cut-off events. For 79217/79220 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 24249 event pairs, 661 based on Foata normal form. 3/3468 useless extension candidates. Maximal degree in co-relation 23120. Up to 3199 conditions per place. [2024-06-27 18:39:48,352 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 279 selfloop transitions, 82 changer transitions 0/368 dead transitions. [2024-06-27 18:39:48,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 368 transitions, 6817 flow [2024-06-27 18:39:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:39:48,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 18:39:48,354 INFO L175 Difference]: Start difference. First operand has 271 places, 327 transitions, 5686 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:39:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 368 transitions, 6817 flow [2024-06-27 18:39:48,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 368 transitions, 6503 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-27 18:39:48,781 INFO L231 Difference]: Finished difference. Result has 274 places, 344 transitions, 5883 flow [2024-06-27 18:39:48,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5382, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5883, PETRI_PLACES=274, PETRI_TRANSITIONS=344} [2024-06-27 18:39:48,781 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-06-27 18:39:48,781 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 344 transitions, 5883 flow [2024-06-27 18:39:48,782 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 18:39:48,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:39:48,782 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 18:39:48,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash 315546506, now seen corresponding path program 6 times [2024-06-27 18:39:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591729830] [2024-06-27 18:39:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:49,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591729830] [2024-06-27 18:39:49,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591729830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:49,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90317096] [2024-06-27 18:39:49,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:49,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:49,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:49,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:49,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 344 transitions, 5883 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:49,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:49,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:50,451 INFO L124 PetriNetUnfolderBase]: 2224/4040 cut-off events. [2024-06-27 18:39:50,451 INFO L125 PetriNetUnfolderBase]: For 100186/100189 co-relation queries the response was YES. [2024-06-27 18:39:50,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25478 conditions, 4040 events. 2224/4040 cut-off events. For 100186/100189 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27805 event pairs, 778 based on Foata normal form. 11/3870 useless extension candidates. Maximal degree in co-relation 25349. Up to 3373 conditions per place. [2024-06-27 18:39:50,493 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 311 selfloop transitions, 68 changer transitions 0/386 dead transitions. [2024-06-27 18:39:50,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 386 transitions, 7138 flow [2024-06-27 18:39:50,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:50,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:39:50,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42337662337662335 [2024-06-27 18:39:50,494 INFO L175 Difference]: Start difference. First operand has 274 places, 344 transitions, 5883 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:39:50,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 386 transitions, 7138 flow [2024-06-27 18:39:50,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 386 transitions, 6937 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:50,956 INFO L231 Difference]: Finished difference. Result has 281 places, 358 transitions, 6222 flow [2024-06-27 18:39:50,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5685, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6222, PETRI_PLACES=281, PETRI_TRANSITIONS=358} [2024-06-27 18:39:50,957 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 242 predicate places. [2024-06-27 18:39:50,957 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 358 transitions, 6222 flow [2024-06-27 18:39:50,957 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 18:39:50,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:50,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:50,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:39:50,957 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 18:39:50,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash -371439724, now seen corresponding path program 14 times [2024-06-27 18:39:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:50,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298051658] [2024-06-27 18:39:50,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298051658] [2024-06-27 18:39:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298051658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449579381] [2024-06-27 18:39:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:51,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 358 transitions, 6222 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 18:39:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:52,611 INFO L124 PetriNetUnfolderBase]: 2308/4200 cut-off events. [2024-06-27 18:39:52,611 INFO L125 PetriNetUnfolderBase]: For 113976/113979 co-relation queries the response was YES. [2024-06-27 18:39:52,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26577 conditions, 4200 events. 2308/4200 cut-off events. For 113976/113979 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29223 event pairs, 717 based on Foata normal form. 13/4024 useless extension candidates. Maximal degree in co-relation 26445. Up to 3309 conditions per place. [2024-06-27 18:39:52,652 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 248 selfloop transitions, 131 changer transitions 0/386 dead transitions. [2024-06-27 18:39:52,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 386 transitions, 7232 flow [2024-06-27 18:39:52,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:39:52,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-27 18:39:52,653 INFO L175 Difference]: Start difference. First operand has 281 places, 358 transitions, 6222 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:39:52,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 386 transitions, 7232 flow [2024-06-27 18:39:53,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 386 transitions, 7053 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:53,144 INFO L231 Difference]: Finished difference. Result has 284 places, 360 transitions, 6433 flow [2024-06-27 18:39:53,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6043, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6433, PETRI_PLACES=284, PETRI_TRANSITIONS=360} [2024-06-27 18:39:53,145 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 245 predicate places. [2024-06-27 18:39:53,145 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 360 transitions, 6433 flow [2024-06-27 18:39:53,145 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 18:39:53,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:53,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:39:53,146 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 18:39:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:53,146 INFO L85 PathProgramCache]: Analyzing trace with hash -366085128, now seen corresponding path program 7 times [2024-06-27 18:39:53,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:53,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975723957] [2024-06-27 18:39:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:53,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:53,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975723957] [2024-06-27 18:39:53,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975723957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:53,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:53,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554940772] [2024-06-27 18:39:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:53,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:53,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:53,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:53,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 360 transitions, 6433 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 18:39:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:54,862 INFO L124 PetriNetUnfolderBase]: 2389/4351 cut-off events. [2024-06-27 18:39:54,862 INFO L125 PetriNetUnfolderBase]: For 115026/115029 co-relation queries the response was YES. [2024-06-27 18:39:54,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27662 conditions, 4351 events. 2389/4351 cut-off events. For 115026/115029 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 30482 event pairs, 735 based on Foata normal form. 11/4173 useless extension candidates. Maximal degree in co-relation 27529. Up to 3165 conditions per place. [2024-06-27 18:39:54,912 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 252 selfloop transitions, 133 changer transitions 0/392 dead transitions. [2024-06-27 18:39:54,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 392 transitions, 7465 flow [2024-06-27 18:39:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:39:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:39:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:39:54,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 18:39:54,913 INFO L175 Difference]: Start difference. First operand has 284 places, 360 transitions, 6433 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:39:54,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 392 transitions, 7465 flow [2024-06-27 18:39:55,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 392 transitions, 7121 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:55,577 INFO L231 Difference]: Finished difference. Result has 287 places, 363 transitions, 6479 flow [2024-06-27 18:39:55,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6479, PETRI_PLACES=287, PETRI_TRANSITIONS=363} [2024-06-27 18:39:55,578 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 248 predicate places. [2024-06-27 18:39:55,578 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 363 transitions, 6479 flow [2024-06-27 18:39:55,578 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 18:39:55,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:55,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:55,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:39:55,578 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 18:39:55,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1438265144, now seen corresponding path program 15 times [2024-06-27 18:39:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:55,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415135196] [2024-06-27 18:39:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:55,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:56,144 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 18:39:56,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:56,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415135196] [2024-06-27 18:39:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415135196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:56,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:39:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344497643] [2024-06-27 18:39:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:56,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:39:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:39:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:39:56,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:56,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 363 transitions, 6479 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 18:39:56,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:56,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:56,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:57,234 INFO L124 PetriNetUnfolderBase]: 2405/4379 cut-off events. [2024-06-27 18:39:57,234 INFO L125 PetriNetUnfolderBase]: For 99655/99658 co-relation queries the response was YES. [2024-06-27 18:39:57,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27647 conditions, 4379 events. 2405/4379 cut-off events. For 99655/99658 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 30858 event pairs, 767 based on Foata normal form. 3/4181 useless extension candidates. Maximal degree in co-relation 27513. Up to 3737 conditions per place. [2024-06-27 18:39:57,278 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 261 selfloop transitions, 119 changer transitions 0/387 dead transitions. [2024-06-27 18:39:57,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 387 transitions, 7467 flow [2024-06-27 18:39:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 18:39:57,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-27 18:39:57,280 INFO L175 Difference]: Start difference. First operand has 287 places, 363 transitions, 6479 flow. Second operand 9 states and 139 transitions. [2024-06-27 18:39:57,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 387 transitions, 7467 flow [2024-06-27 18:39:57,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 387 transitions, 7229 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:57,908 INFO L231 Difference]: Finished difference. Result has 290 places, 365 transitions, 6609 flow [2024-06-27 18:39:57,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6241, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6609, PETRI_PLACES=290, PETRI_TRANSITIONS=365} [2024-06-27 18:39:57,909 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 251 predicate places. [2024-06-27 18:39:57,909 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 365 transitions, 6609 flow [2024-06-27 18:39:57,909 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 18:39:57,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:57,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:57,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:39:57,910 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 18:39:57,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash -365846118, now seen corresponding path program 8 times [2024-06-27 18:39:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:57,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513514466] [2024-06-27 18:39:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:58,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513514466] [2024-06-27 18:39:58,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513514466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:58,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:39:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514929801] [2024-06-27 18:39:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:58,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:39:58,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:58,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:39:58,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:39:58,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:39:58,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 365 transitions, 6609 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 18:39:58,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:58,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:39:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:59,421 INFO L124 PetriNetUnfolderBase]: 2538/4631 cut-off events. [2024-06-27 18:39:59,421 INFO L125 PetriNetUnfolderBase]: For 138337/138340 co-relation queries the response was YES. [2024-06-27 18:39:59,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29684 conditions, 4631 events. 2538/4631 cut-off events. For 138337/138340 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 32929 event pairs, 759 based on Foata normal form. 9/4491 useless extension candidates. Maximal degree in co-relation 29549. Up to 2047 conditions per place. [2024-06-27 18:39:59,471 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 235 selfloop transitions, 157 changer transitions 0/399 dead transitions. [2024-06-27 18:39:59,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 399 transitions, 7835 flow [2024-06-27 18:39:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:39:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:39:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:39:59,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:39:59,473 INFO L175 Difference]: Start difference. First operand has 290 places, 365 transitions, 6609 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:39:59,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 399 transitions, 7835 flow [2024-06-27 18:40:00,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 399 transitions, 7501 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:00,198 INFO L231 Difference]: Finished difference. Result has 292 places, 367 transitions, 6745 flow [2024-06-27 18:40:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6745, PETRI_PLACES=292, PETRI_TRANSITIONS=367} [2024-06-27 18:40:00,199 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 253 predicate places. [2024-06-27 18:40:00,199 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 367 transitions, 6745 flow [2024-06-27 18:40:00,199 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 18:40:00,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:40:00,200 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 18:40:00,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1438269794, now seen corresponding path program 16 times [2024-06-27 18:40:00,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108636850] [2024-06-27 18:40:00,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:00,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108636850] [2024-06-27 18:40:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108636850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680874430] [2024-06-27 18:40:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:00,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:00,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:00,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:00,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:00,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 367 transitions, 6745 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 18:40:00,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:00,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:00,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:01,917 INFO L124 PetriNetUnfolderBase]: 2554/4660 cut-off events. [2024-06-27 18:40:01,918 INFO L125 PetriNetUnfolderBase]: For 133253/133256 co-relation queries the response was YES. [2024-06-27 18:40:01,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30063 conditions, 4660 events. 2554/4660 cut-off events. For 133253/133256 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 33427 event pairs, 850 based on Foata normal form. 3/4470 useless extension candidates. Maximal degree in co-relation 29927. Up to 3632 conditions per place. [2024-06-27 18:40:01,970 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 261 selfloop transitions, 129 changer transitions 0/397 dead transitions. [2024-06-27 18:40:01,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 397 transitions, 7799 flow [2024-06-27 18:40:01,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:40:01,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-27 18:40:01,971 INFO L175 Difference]: Start difference. First operand has 292 places, 367 transitions, 6745 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:40:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 397 transitions, 7799 flow [2024-06-27 18:40:02,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 397 transitions, 7558 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:02,926 INFO L231 Difference]: Finished difference. Result has 295 places, 369 transitions, 6898 flow [2024-06-27 18:40:02,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6506, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6898, PETRI_PLACES=295, PETRI_TRANSITIONS=369} [2024-06-27 18:40:02,927 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 256 predicate places. [2024-06-27 18:40:02,927 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 369 transitions, 6898 flow [2024-06-27 18:40:02,927 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 18:40:02,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:02,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:02,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:40:02,927 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 18:40:02,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:02,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1438085220, now seen corresponding path program 9 times [2024-06-27 18:40:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:02,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824474194] [2024-06-27 18:40:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:03,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824474194] [2024-06-27 18:40:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824474194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:03,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:03,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:03,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136021309] [2024-06-27 18:40:03,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:03,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:03,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:03,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:03,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 369 transitions, 6898 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 18:40:03,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:03,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:03,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:05,056 INFO L124 PetriNetUnfolderBase]: 2646/4839 cut-off events. [2024-06-27 18:40:05,057 INFO L125 PetriNetUnfolderBase]: For 144679/144682 co-relation queries the response was YES. [2024-06-27 18:40:05,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31177 conditions, 4839 events. 2646/4839 cut-off events. For 144679/144682 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 35097 event pairs, 909 based on Foata normal form. 11/4649 useless extension candidates. Maximal degree in co-relation 31040. Up to 3931 conditions per place. [2024-06-27 18:40:05,109 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 272 selfloop transitions, 123 changer transitions 0/402 dead transitions. [2024-06-27 18:40:05,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 402 transitions, 7978 flow [2024-06-27 18:40:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:40:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-06-27 18:40:05,111 INFO L175 Difference]: Start difference. First operand has 295 places, 369 transitions, 6898 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:40:05,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 402 transitions, 7978 flow [2024-06-27 18:40:05,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 402 transitions, 7603 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:05,953 INFO L231 Difference]: Finished difference. Result has 297 places, 373 transitions, 6921 flow [2024-06-27 18:40:05,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6527, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6921, PETRI_PLACES=297, PETRI_TRANSITIONS=373} [2024-06-27 18:40:05,954 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 258 predicate places. [2024-06-27 18:40:05,954 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 373 transitions, 6921 flow [2024-06-27 18:40:05,954 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 18:40:05,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:05,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:05,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:40:05,955 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 18:40:05,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1510217130, now seen corresponding path program 10 times [2024-06-27 18:40:05,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:05,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32400411] [2024-06-27 18:40:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:05,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:06,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32400411] [2024-06-27 18:40:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32400411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:06,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661244863] [2024-06-27 18:40:06,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:06,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:06,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:06,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:06,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 373 transitions, 6921 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 18:40:06,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:06,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:06,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:07,711 INFO L124 PetriNetUnfolderBase]: 2798/5138 cut-off events. [2024-06-27 18:40:07,711 INFO L125 PetriNetUnfolderBase]: For 177615/177618 co-relation queries the response was YES. [2024-06-27 18:40:07,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33659 conditions, 5138 events. 2798/5138 cut-off events. For 177615/177618 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 38034 event pairs, 1399 based on Foata normal form. 9/4940 useless extension candidates. Maximal degree in co-relation 33522. Up to 4537 conditions per place. [2024-06-27 18:40:07,762 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 376 selfloop transitions, 22 changer transitions 0/405 dead transitions. [2024-06-27 18:40:07,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 405 transitions, 8205 flow [2024-06-27 18:40:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:40:07,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-27 18:40:07,763 INFO L175 Difference]: Start difference. First operand has 297 places, 373 transitions, 6921 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:40:07,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 405 transitions, 8205 flow [2024-06-27 18:40:08,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 405 transitions, 8010 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:08,813 INFO L231 Difference]: Finished difference. Result has 300 places, 375 transitions, 6929 flow [2024-06-27 18:40:08,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6929, PETRI_PLACES=300, PETRI_TRANSITIONS=375} [2024-06-27 18:40:08,814 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 261 predicate places. [2024-06-27 18:40:08,814 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 375 transitions, 6929 flow [2024-06-27 18:40:08,814 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 18:40:08,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:08,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:40:08,814 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 18:40:08,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:08,815 INFO L85 PathProgramCache]: Analyzing trace with hash 643822588, now seen corresponding path program 11 times [2024-06-27 18:40:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323338104] [2024-06-27 18:40:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323338104] [2024-06-27 18:40:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323338104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172158867] [2024-06-27 18:40:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:09,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:09,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 375 transitions, 6929 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 18:40:09,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:09,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:09,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:10,641 INFO L124 PetriNetUnfolderBase]: 2863/5263 cut-off events. [2024-06-27 18:40:10,641 INFO L125 PetriNetUnfolderBase]: For 187403/187406 co-relation queries the response was YES. [2024-06-27 18:40:10,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33896 conditions, 5263 events. 2863/5263 cut-off events. For 187403/187406 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 39228 event pairs, 1471 based on Foata normal form. 13/5064 useless extension candidates. Maximal degree in co-relation 33758. Up to 4864 conditions per place. [2024-06-27 18:40:10,698 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 371 selfloop transitions, 22 changer transitions 0/400 dead transitions. [2024-06-27 18:40:10,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 400 transitions, 7973 flow [2024-06-27 18:40:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 18:40:10,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43174603174603177 [2024-06-27 18:40:10,699 INFO L175 Difference]: Start difference. First operand has 300 places, 375 transitions, 6929 flow. Second operand 9 states and 136 transitions. [2024-06-27 18:40:10,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 400 transitions, 7973 flow [2024-06-27 18:40:11,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 400 transitions, 7874 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:11,603 INFO L231 Difference]: Finished difference. Result has 304 places, 377 transitions, 7012 flow [2024-06-27 18:40:11,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6836, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7012, PETRI_PLACES=304, PETRI_TRANSITIONS=377} [2024-06-27 18:40:11,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 265 predicate places. [2024-06-27 18:40:11,604 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 377 transitions, 7012 flow [2024-06-27 18:40:11,604 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 18:40:11,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:11,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:11,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:40:11,604 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 18:40:11,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:11,605 INFO L85 PathProgramCache]: Analyzing trace with hash 358492078, now seen corresponding path program 12 times [2024-06-27 18:40:11,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663782560] [2024-06-27 18:40:11,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:11,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:12,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:12,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663782560] [2024-06-27 18:40:12,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663782560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179363196] [2024-06-27 18:40:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:12,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:12,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:12,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:12,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 377 transitions, 7012 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 18:40:12,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:12,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:12,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:13,736 INFO L124 PetriNetUnfolderBase]: 2850/5243 cut-off events. [2024-06-27 18:40:13,736 INFO L125 PetriNetUnfolderBase]: For 159791/159794 co-relation queries the response was YES. [2024-06-27 18:40:13,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33044 conditions, 5243 events. 2850/5243 cut-off events. For 159791/159794 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 38979 event pairs, 1448 based on Foata normal form. 11/5043 useless extension candidates. Maximal degree in co-relation 32904. Up to 4699 conditions per place. [2024-06-27 18:40:13,778 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 373 selfloop transitions, 22 changer transitions 0/402 dead transitions. [2024-06-27 18:40:13,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 402 transitions, 7944 flow [2024-06-27 18:40:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:40:13,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-27 18:40:13,780 INFO L175 Difference]: Start difference. First operand has 304 places, 377 transitions, 7012 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:40:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 402 transitions, 7944 flow [2024-06-27 18:40:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 402 transitions, 7778 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:14,634 INFO L231 Difference]: Finished difference. Result has 307 places, 377 transitions, 6898 flow [2024-06-27 18:40:14,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6846, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6898, PETRI_PLACES=307, PETRI_TRANSITIONS=377} [2024-06-27 18:40:14,635 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 268 predicate places. [2024-06-27 18:40:14,635 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 377 transitions, 6898 flow [2024-06-27 18:40:14,635 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 18:40:14,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:14,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:14,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:40:14,636 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 18:40:14,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1163573262, now seen corresponding path program 17 times [2024-06-27 18:40:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710332708] [2024-06-27 18:40:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:15,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710332708] [2024-06-27 18:40:15,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710332708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:15,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:15,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637597011] [2024-06-27 18:40:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:15,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:15,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:15,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:15,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:15,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 377 transitions, 6898 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 18:40:15,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:15,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:15,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:16,613 INFO L124 PetriNetUnfolderBase]: 2866/5261 cut-off events. [2024-06-27 18:40:16,613 INFO L125 PetriNetUnfolderBase]: For 135979/135982 co-relation queries the response was YES. [2024-06-27 18:40:16,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32805 conditions, 5261 events. 2866/5261 cut-off events. For 135979/135982 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 39011 event pairs, 1008 based on Foata normal form. 3/5045 useless extension candidates. Maximal degree in co-relation 32664. Up to 4471 conditions per place. [2024-06-27 18:40:16,671 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 259 selfloop transitions, 134 changer transitions 0/400 dead transitions. [2024-06-27 18:40:16,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 400 transitions, 7922 flow [2024-06-27 18:40:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:40:16,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-27 18:40:16,672 INFO L175 Difference]: Start difference. First operand has 307 places, 377 transitions, 6898 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:40:16,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 400 transitions, 7922 flow [2024-06-27 18:40:17,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 400 transitions, 7840 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:17,575 INFO L231 Difference]: Finished difference. Result has 307 places, 379 transitions, 7223 flow [2024-06-27 18:40:17,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6816, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7223, PETRI_PLACES=307, PETRI_TRANSITIONS=379} [2024-06-27 18:40:17,576 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 268 predicate places. [2024-06-27 18:40:17,576 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 379 transitions, 7223 flow [2024-06-27 18:40:17,576 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 18:40:17,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:17,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:40:17,577 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 18:40:17,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1163577912, now seen corresponding path program 18 times [2024-06-27 18:40:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504886641] [2024-06-27 18:40:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:18,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504886641] [2024-06-27 18:40:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504886641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953362940] [2024-06-27 18:40:18,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:18,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:18,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:18,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:18,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:18,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 379 transitions, 7223 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 18:40:18,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:18,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:18,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:19,477 INFO L124 PetriNetUnfolderBase]: 2966/5446 cut-off events. [2024-06-27 18:40:19,477 INFO L125 PetriNetUnfolderBase]: For 176103/176106 co-relation queries the response was YES. [2024-06-27 18:40:19,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35309 conditions, 5446 events. 2966/5446 cut-off events. For 176103/176106 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40642 event pairs, 1067 based on Foata normal form. 3/5238 useless extension candidates. Maximal degree in co-relation 35167. Up to 4289 conditions per place. [2024-06-27 18:40:19,534 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 263 selfloop transitions, 141 changer transitions 0/411 dead transitions. [2024-06-27 18:40:19,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 411 transitions, 8581 flow [2024-06-27 18:40:19,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:40:19,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:40:19,535 INFO L175 Difference]: Start difference. First operand has 307 places, 379 transitions, 7223 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:40:19,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 411 transitions, 8581 flow [2024-06-27 18:40:20,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 411 transitions, 8190 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:20,617 INFO L231 Difference]: Finished difference. Result has 309 places, 383 transitions, 7391 flow [2024-06-27 18:40:20,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6832, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7391, PETRI_PLACES=309, PETRI_TRANSITIONS=383} [2024-06-27 18:40:20,618 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 270 predicate places. [2024-06-27 18:40:20,618 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 383 transitions, 7391 flow [2024-06-27 18:40:20,618 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 18:40:20,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:20,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:40:20,619 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 18:40:20,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:20,619 INFO L85 PathProgramCache]: Analyzing trace with hash 653950288, now seen corresponding path program 13 times [2024-06-27 18:40:20,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:20,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495662756] [2024-06-27 18:40:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:20,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:21,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:21,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:21,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495662756] [2024-06-27 18:40:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495662756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:21,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310743069] [2024-06-27 18:40:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:21,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:21,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:21,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:21,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 383 transitions, 7391 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 18:40:21,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:21,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:21,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:22,530 INFO L124 PetriNetUnfolderBase]: 3018/5555 cut-off events. [2024-06-27 18:40:22,531 INFO L125 PetriNetUnfolderBase]: For 195691/195694 co-relation queries the response was YES. [2024-06-27 18:40:22,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35768 conditions, 5555 events. 3018/5555 cut-off events. For 195691/195694 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 41782 event pairs, 1521 based on Foata normal form. 9/5380 useless extension candidates. Maximal degree in co-relation 35625. Up to 4711 conditions per place. [2024-06-27 18:40:22,589 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 384 selfloop transitions, 26 changer transitions 0/417 dead transitions. [2024-06-27 18:40:22,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 417 transitions, 8479 flow [2024-06-27 18:40:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:40:22,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-06-27 18:40:22,591 INFO L175 Difference]: Start difference. First operand has 309 places, 383 transitions, 7391 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:40:22,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 417 transitions, 8479 flow [2024-06-27 18:40:23,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 417 transitions, 8123 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:23,587 INFO L231 Difference]: Finished difference. Result has 312 places, 384 transitions, 7175 flow [2024-06-27 18:40:23,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7035, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7175, PETRI_PLACES=312, PETRI_TRANSITIONS=384} [2024-06-27 18:40:23,588 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 273 predicate places. [2024-06-27 18:40:23,588 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 384 transitions, 7175 flow [2024-06-27 18:40:23,588 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 18:40:23,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:23,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:23,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:40:23,588 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 18:40:23,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:23,589 INFO L85 PathProgramCache]: Analyzing trace with hash 996903916, now seen corresponding path program 19 times [2024-06-27 18:40:23,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796685747] [2024-06-27 18:40:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:24,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:24,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796685747] [2024-06-27 18:40:24,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796685747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:24,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783545059] [2024-06-27 18:40:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:24,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:24,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:24,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:24,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:24,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:24,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 384 transitions, 7175 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 18:40:24,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:24,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:24,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:25,563 INFO L124 PetriNetUnfolderBase]: 3002/5519 cut-off events. [2024-06-27 18:40:25,563 INFO L125 PetriNetUnfolderBase]: For 167562/167565 co-relation queries the response was YES. [2024-06-27 18:40:25,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34240 conditions, 5519 events. 3002/5519 cut-off events. For 167562/167565 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 41442 event pairs, 1099 based on Foata normal form. 13/5314 useless extension candidates. Maximal degree in co-relation 34097. Up to 4597 conditions per place. [2024-06-27 18:40:25,624 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 273 selfloop transitions, 129 changer transitions 0/409 dead transitions. [2024-06-27 18:40:25,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 409 transitions, 8117 flow [2024-06-27 18:40:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:40:25,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:40:25,629 INFO L175 Difference]: Start difference. First operand has 312 places, 384 transitions, 7175 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:40:25,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 409 transitions, 8117 flow [2024-06-27 18:40:26,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 409 transitions, 7913 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:26,744 INFO L231 Difference]: Finished difference. Result has 313 places, 384 transitions, 7235 flow [2024-06-27 18:40:26,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6971, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7235, PETRI_PLACES=313, PETRI_TRANSITIONS=384} [2024-06-27 18:40:26,744 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 274 predicate places. [2024-06-27 18:40:26,744 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 384 transitions, 7235 flow [2024-06-27 18:40:26,745 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 18:40:26,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:26,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:26,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:40:26,745 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 18:40:26,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:26,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1156898218, now seen corresponding path program 14 times [2024-06-27 18:40:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:26,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756335289] [2024-06-27 18:40:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:26,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:27,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:27,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756335289] [2024-06-27 18:40:27,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756335289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:27,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:27,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:27,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331932828] [2024-06-27 18:40:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:27,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:27,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:27,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:27,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:27,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:27,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 384 transitions, 7235 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 18:40:27,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:27,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:27,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,678 INFO L124 PetriNetUnfolderBase]: 3097/5706 cut-off events. [2024-06-27 18:40:28,678 INFO L125 PetriNetUnfolderBase]: For 173922/173925 co-relation queries the response was YES. [2024-06-27 18:40:28,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35500 conditions, 5706 events. 3097/5706 cut-off events. For 173922/173925 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 43203 event pairs, 1121 based on Foata normal form. 9/5500 useless extension candidates. Maximal degree in co-relation 35356. Up to 4453 conditions per place. [2024-06-27 18:40:28,735 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 280 selfloop transitions, 130 changer transitions 0/417 dead transitions. [2024-06-27 18:40:28,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 417 transitions, 8531 flow [2024-06-27 18:40:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:28,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:40:28,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-27 18:40:28,736 INFO L175 Difference]: Start difference. First operand has 313 places, 384 transitions, 7235 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:40:28,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 417 transitions, 8531 flow [2024-06-27 18:40:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 417 transitions, 8253 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:30,008 INFO L231 Difference]: Finished difference. Result has 314 places, 386 transitions, 7391 flow [2024-06-27 18:40:30,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7391, PETRI_PLACES=314, PETRI_TRANSITIONS=386} [2024-06-27 18:40:30,009 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 275 predicate places. [2024-06-27 18:40:30,009 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 386 transitions, 7391 flow [2024-06-27 18:40:30,009 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 18:40:30,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:30,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:30,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:40:30,010 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 18:40:30,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:30,010 INFO L85 PathProgramCache]: Analyzing trace with hash 990654750, now seen corresponding path program 15 times [2024-06-27 18:40:30,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:30,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075771611] [2024-06-27 18:40:30,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:30,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075771611] [2024-06-27 18:40:30,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075771611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:30,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:30,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386522675] [2024-06-27 18:40:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:30,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:30,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:30,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:30,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 386 transitions, 7391 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 18:40:30,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:30,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:32,251 INFO L124 PetriNetUnfolderBase]: 3165/5836 cut-off events. [2024-06-27 18:40:32,251 INFO L125 PetriNetUnfolderBase]: For 191297/191300 co-relation queries the response was YES. [2024-06-27 18:40:32,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36369 conditions, 5836 events. 3165/5836 cut-off events. For 191297/191300 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 44475 event pairs, 1189 based on Foata normal form. 11/5625 useless extension candidates. Maximal degree in co-relation 36224. Up to 4898 conditions per place. [2024-06-27 18:40:32,313 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 274 selfloop transitions, 134 changer transitions 0/415 dead transitions. [2024-06-27 18:40:32,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 415 transitions, 8447 flow [2024-06-27 18:40:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:40:32,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542857142857143 [2024-06-27 18:40:32,314 INFO L175 Difference]: Start difference. First operand has 314 places, 386 transitions, 7391 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:40:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 415 transitions, 8447 flow [2024-06-27 18:40:33,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 415 transitions, 8195 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:33,604 INFO L231 Difference]: Finished difference. Result has 319 places, 387 transitions, 7502 flow [2024-06-27 18:40:33,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7153, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7502, PETRI_PLACES=319, PETRI_TRANSITIONS=387} [2024-06-27 18:40:33,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 280 predicate places. [2024-06-27 18:40:33,604 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 387 transitions, 7502 flow [2024-06-27 18:40:33,605 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 18:40:33,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:40:33,605 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 18:40:33,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -958531616, now seen corresponding path program 16 times [2024-06-27 18:40:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596322646] [2024-06-27 18:40:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596322646] [2024-06-27 18:40:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596322646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609225558] [2024-06-27 18:40:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:34,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:34,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 387 transitions, 7502 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 18:40:34,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:34,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:34,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:35,608 INFO L124 PetriNetUnfolderBase]: 3152/5814 cut-off events. [2024-06-27 18:40:35,608 INFO L125 PetriNetUnfolderBase]: For 157999/158002 co-relation queries the response was YES. [2024-06-27 18:40:35,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35658 conditions, 5814 events. 3152/5814 cut-off events. For 157999/158002 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 44267 event pairs, 1175 based on Foata normal form. 11/5605 useless extension candidates. Maximal degree in co-relation 35511. Up to 4745 conditions per place. [2024-06-27 18:40:35,663 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 279 selfloop transitions, 129 changer transitions 0/415 dead transitions. [2024-06-27 18:40:35,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 415 transitions, 8472 flow [2024-06-27 18:40:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:40:35,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 18:40:35,664 INFO L175 Difference]: Start difference. First operand has 319 places, 387 transitions, 7502 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:40:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 415 transitions, 8472 flow [2024-06-27 18:40:36,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 415 transitions, 8107 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:36,840 INFO L231 Difference]: Finished difference. Result has 321 places, 387 transitions, 7403 flow [2024-06-27 18:40:36,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7137, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7403, PETRI_PLACES=321, PETRI_TRANSITIONS=387} [2024-06-27 18:40:36,841 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 282 predicate places. [2024-06-27 18:40:36,841 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 387 transitions, 7403 flow [2024-06-27 18:40:36,841 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 18:40:36,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:36,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:36,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:40:36,841 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 18:40:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1278539572, now seen corresponding path program 1 times [2024-06-27 18:40:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:36,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047957395] [2024-06-27 18:40:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047957395] [2024-06-27 18:40:37,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047957395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:37,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:37,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604970712] [2024-06-27 18:40:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:37,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:37,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:37,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:37,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:37,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 18:40:37,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 387 transitions, 7403 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:37,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 18:40:37,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:38,862 INFO L124 PetriNetUnfolderBase]: 3178/5912 cut-off events. [2024-06-27 18:40:38,863 INFO L125 PetriNetUnfolderBase]: For 145965/145983 co-relation queries the response was YES. [2024-06-27 18:40:38,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35854 conditions, 5912 events. 3178/5912 cut-off events. For 145965/145983 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 45827 event pairs, 1298 based on Foata normal form. 24/5687 useless extension candidates. Maximal degree in co-relation 35706. Up to 5371 conditions per place. [2024-06-27 18:40:38,920 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 339 selfloop transitions, 64 changer transitions 0/433 dead transitions. [2024-06-27 18:40:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 433 transitions, 8622 flow [2024-06-27 18:40:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:40:38,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46984126984126984 [2024-06-27 18:40:38,921 INFO L175 Difference]: Start difference. First operand has 321 places, 387 transitions, 7403 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:40:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 433 transitions, 8622 flow [2024-06-27 18:40:40,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 433 transitions, 8344 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:40,312 INFO L231 Difference]: Finished difference. Result has 322 places, 403 transitions, 7573 flow [2024-06-27 18:40:40,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7125, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7573, PETRI_PLACES=322, PETRI_TRANSITIONS=403} [2024-06-27 18:40:40,313 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 283 predicate places. [2024-06-27 18:40:40,313 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 403 transitions, 7573 flow [2024-06-27 18:40:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:40,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:40,313 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 18:40:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:40:40,313 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 18:40:40,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash -142640118, now seen corresponding path program 2 times [2024-06-27 18:40:40,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:40,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693627746] [2024-06-27 18:40:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:40,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693627746] [2024-06-27 18:40:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693627746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89174911] [2024-06-27 18:40:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:41,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:41,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:41,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 403 transitions, 7573 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 18:40:41,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:41,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:41,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:42,630 INFO L124 PetriNetUnfolderBase]: 3321/6142 cut-off events. [2024-06-27 18:40:42,630 INFO L125 PetriNetUnfolderBase]: For 149216/149219 co-relation queries the response was YES. [2024-06-27 18:40:42,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36861 conditions, 6142 events. 3321/6142 cut-off events. For 149216/149219 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 47527 event pairs, 1444 based on Foata normal form. 7/5926 useless extension candidates. Maximal degree in co-relation 36711. Up to 5520 conditions per place. [2024-06-27 18:40:42,696 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 334 selfloop transitions, 97 changer transitions 0/438 dead transitions. [2024-06-27 18:40:42,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 438 transitions, 8689 flow [2024-06-27 18:40:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:40:42,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43896103896103894 [2024-06-27 18:40:42,699 INFO L175 Difference]: Start difference. First operand has 322 places, 403 transitions, 7573 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:40:42,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 438 transitions, 8689 flow [2024-06-27 18:40:43,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 438 transitions, 8517 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:43,890 INFO L231 Difference]: Finished difference. Result has 328 places, 404 transitions, 7691 flow [2024-06-27 18:40:43,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7401, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7691, PETRI_PLACES=328, PETRI_TRANSITIONS=404} [2024-06-27 18:40:43,891 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 289 predicate places. [2024-06-27 18:40:43,891 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 404 transitions, 7691 flow [2024-06-27 18:40:43,891 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 18:40:43,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:43,891 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 18:40:43,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:40:43,891 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 18:40:43,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:43,892 INFO L85 PathProgramCache]: Analyzing trace with hash -663702498, now seen corresponding path program 3 times [2024-06-27 18:40:43,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:43,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331854870] [2024-06-27 18:40:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:43,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:44,507 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 18:40:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:44,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331854870] [2024-06-27 18:40:44,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331854870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:44,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395846344] [2024-06-27 18:40:44,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:44,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:44,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:44,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:44,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 404 transitions, 7691 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 18:40:44,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:44,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:44,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,208 INFO L124 PetriNetUnfolderBase]: 3377/6241 cut-off events. [2024-06-27 18:40:46,209 INFO L125 PetriNetUnfolderBase]: For 152061/152064 co-relation queries the response was YES. [2024-06-27 18:40:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37537 conditions, 6241 events. 3377/6241 cut-off events. For 152061/152064 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 48138 event pairs, 1364 based on Foata normal form. 7/6022 useless extension candidates. Maximal degree in co-relation 37386. Up to 5614 conditions per place. [2024-06-27 18:40:46,273 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 358 selfloop transitions, 78 changer transitions 0/443 dead transitions. [2024-06-27 18:40:46,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 443 transitions, 8849 flow [2024-06-27 18:40:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:40:46,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43896103896103894 [2024-06-27 18:40:46,274 INFO L175 Difference]: Start difference. First operand has 328 places, 404 transitions, 7691 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:40:46,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 443 transitions, 8849 flow [2024-06-27 18:40:47,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 443 transitions, 8579 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:47,605 INFO L231 Difference]: Finished difference. Result has 330 places, 406 transitions, 7696 flow [2024-06-27 18:40:47,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7421, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7696, PETRI_PLACES=330, PETRI_TRANSITIONS=406} [2024-06-27 18:40:47,606 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 291 predicate places. [2024-06-27 18:40:47,606 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 406 transitions, 7696 flow [2024-06-27 18:40:47,606 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 18:40:47,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:47,606 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 18:40:47,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:40:47,606 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 18:40:47,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash 467027892, now seen corresponding path program 4 times [2024-06-27 18:40:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759216071] [2024-06-27 18:40:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:48,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759216071] [2024-06-27 18:40:48,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759216071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219953400] [2024-06-27 18:40:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:48,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:48,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 406 transitions, 7696 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 18:40:48,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:48,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:49,900 INFO L124 PetriNetUnfolderBase]: 3471/6436 cut-off events. [2024-06-27 18:40:49,901 INFO L125 PetriNetUnfolderBase]: For 153152/153155 co-relation queries the response was YES. [2024-06-27 18:40:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38297 conditions, 6436 events. 3471/6436 cut-off events. For 153152/153155 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 50346 event pairs, 1567 based on Foata normal form. 7/6225 useless extension candidates. Maximal degree in co-relation 38145. Up to 5794 conditions per place. [2024-06-27 18:40:49,958 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 337 selfloop transitions, 97 changer transitions 0/441 dead transitions. [2024-06-27 18:40:49,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 441 transitions, 8832 flow [2024-06-27 18:40:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:40:49,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 18:40:49,959 INFO L175 Difference]: Start difference. First operand has 330 places, 406 transitions, 7696 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:40:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 441 transitions, 8832 flow [2024-06-27 18:40:51,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 441 transitions, 8593 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:51,014 INFO L231 Difference]: Finished difference. Result has 332 places, 409 transitions, 7778 flow [2024-06-27 18:40:51,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7457, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7778, PETRI_PLACES=332, PETRI_TRANSITIONS=409} [2024-06-27 18:40:51,015 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 293 predicate places. [2024-06-27 18:40:51,015 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 409 transitions, 7778 flow [2024-06-27 18:40:51,015 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 18:40:51,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:51,015 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 18:40:51,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:40:51,016 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:51,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash 488281399, now seen corresponding path program 1 times [2024-06-27 18:40:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:51,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397884647] [2024-06-27 18:40:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:51,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:51,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:51,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397884647] [2024-06-27 18:40:51,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397884647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:51,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:51,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270910514] [2024-06-27 18:40:51,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:51,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:51,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:51,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 409 transitions, 7778 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:51,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:51,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:53,067 INFO L124 PetriNetUnfolderBase]: 3540/6567 cut-off events. [2024-06-27 18:40:53,067 INFO L125 PetriNetUnfolderBase]: For 153107/153110 co-relation queries the response was YES. [2024-06-27 18:40:53,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38667 conditions, 6567 events. 3540/6567 cut-off events. For 153107/153110 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 51420 event pairs, 1554 based on Foata normal form. 9/6371 useless extension candidates. Maximal degree in co-relation 38514. Up to 5198 conditions per place. [2024-06-27 18:40:53,143 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 298 selfloop transitions, 134 changer transitions 0/439 dead transitions. [2024-06-27 18:40:53,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 439 transitions, 8874 flow [2024-06-27 18:40:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:40:53,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-06-27 18:40:53,144 INFO L175 Difference]: Start difference. First operand has 332 places, 409 transitions, 7778 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:40:53,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 439 transitions, 8874 flow [2024-06-27 18:40:54,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 439 transitions, 8623 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:54,320 INFO L231 Difference]: Finished difference. Result has 333 places, 411 transitions, 7916 flow [2024-06-27 18:40:54,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7527, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7916, PETRI_PLACES=333, PETRI_TRANSITIONS=411} [2024-06-27 18:40:54,321 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 294 predicate places. [2024-06-27 18:40:54,321 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 411 transitions, 7916 flow [2024-06-27 18:40:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,321 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 18:40:54,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:40:54,321 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 18:40:54,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1802579274, now seen corresponding path program 5 times [2024-06-27 18:40:54,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803444184] [2024-06-27 18:40:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:54,853 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 18:40:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803444184] [2024-06-27 18:40:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803444184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:54,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:54,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138790277] [2024-06-27 18:40:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:54,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:54,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 411 transitions, 7916 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:54,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:54,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,524 INFO L124 PetriNetUnfolderBase]: 3606/6693 cut-off events. [2024-06-27 18:40:56,524 INFO L125 PetriNetUnfolderBase]: For 156968/156971 co-relation queries the response was YES. [2024-06-27 18:40:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39772 conditions, 6693 events. 3606/6693 cut-off events. For 156968/156971 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 52817 event pairs, 1485 based on Foata normal form. 7/6471 useless extension candidates. Maximal degree in co-relation 39618. Up to 5770 conditions per place. [2024-06-27 18:40:56,601 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 356 selfloop transitions, 88 changer transitions 0/451 dead transitions. [2024-06-27 18:40:56,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 451 transitions, 9323 flow [2024-06-27 18:40:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:40:56,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-27 18:40:56,602 INFO L175 Difference]: Start difference. First operand has 333 places, 411 transitions, 7916 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:40:56,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 451 transitions, 9323 flow [2024-06-27 18:40:57,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 451 transitions, 9112 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:57,982 INFO L231 Difference]: Finished difference. Result has 340 places, 419 transitions, 8343 flow [2024-06-27 18:40:57,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7705, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8343, PETRI_PLACES=340, PETRI_TRANSITIONS=419} [2024-06-27 18:40:57,983 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 301 predicate places. [2024-06-27 18:40:57,983 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 419 transitions, 8343 flow [2024-06-27 18:40:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:57,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:57,983 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 18:40:57,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:40:57,983 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 18:40:57,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash -977332164, now seen corresponding path program 6 times [2024-06-27 18:40:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:57,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691398136] [2024-06-27 18:40:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:57,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:58,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:58,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691398136] [2024-06-27 18:40:58,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691398136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:58,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:58,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:58,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016392116] [2024-06-27 18:40:58,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:58,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:58,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:58,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:58,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:40:58,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 419 transitions, 8343 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:58,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:58,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:40:58,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:00,198 INFO L124 PetriNetUnfolderBase]: 3599/6680 cut-off events. [2024-06-27 18:41:00,198 INFO L125 PetriNetUnfolderBase]: For 140734/140737 co-relation queries the response was YES. [2024-06-27 18:41:00,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39425 conditions, 6680 events. 3599/6680 cut-off events. For 140734/140737 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 52752 event pairs, 1420 based on Foata normal form. 7/6470 useless extension candidates. Maximal degree in co-relation 39267. Up to 5568 conditions per place. [2024-06-27 18:41:00,284 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 308 selfloop transitions, 133 changer transitions 0/448 dead transitions. [2024-06-27 18:41:00,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 448 transitions, 9389 flow [2024-06-27 18:41:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:41:00,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:41:00,286 INFO L175 Difference]: Start difference. First operand has 340 places, 419 transitions, 8343 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:41:00,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 448 transitions, 9389 flow [2024-06-27 18:41:01,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 448 transitions, 9007 flow, removed 166 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:01,755 INFO L231 Difference]: Finished difference. Result has 347 places, 420 transitions, 8312 flow [2024-06-27 18:41:01,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7961, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8312, PETRI_PLACES=347, PETRI_TRANSITIONS=420} [2024-06-27 18:41:01,755 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 308 predicate places. [2024-06-27 18:41:01,756 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 420 transitions, 8312 flow [2024-06-27 18:41:01,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:01,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:01,756 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 18:41:01,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:41:01,756 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 18:41:01,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 245981042, now seen corresponding path program 7 times [2024-06-27 18:41:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783094973] [2024-06-27 18:41:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:02,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783094973] [2024-06-27 18:41:02,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783094973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976273203] [2024-06-27 18:41:02,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:02,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:02,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:02,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:02,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 420 transitions, 8312 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:02,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:02,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:02,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:03,932 INFO L124 PetriNetUnfolderBase]: 3635/6752 cut-off events. [2024-06-27 18:41:03,932 INFO L125 PetriNetUnfolderBase]: For 140523/140526 co-relation queries the response was YES. [2024-06-27 18:41:03,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40040 conditions, 6752 events. 3635/6752 cut-off events. For 140523/140526 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 53437 event pairs, 1482 based on Foata normal form. 7/6531 useless extension candidates. Maximal degree in co-relation 39879. Up to 5744 conditions per place. [2024-06-27 18:41:04,014 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 308 selfloop transitions, 136 changer transitions 0/451 dead transitions. [2024-06-27 18:41:04,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 451 transitions, 9442 flow [2024-06-27 18:41:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:41:04,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-27 18:41:04,016 INFO L175 Difference]: Start difference. First operand has 347 places, 420 transitions, 8312 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:41:04,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 451 transitions, 9442 flow [2024-06-27 18:41:05,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 451 transitions, 9052 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:05,106 INFO L231 Difference]: Finished difference. Result has 349 places, 421 transitions, 8300 flow [2024-06-27 18:41:05,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7928, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8300, PETRI_PLACES=349, PETRI_TRANSITIONS=421} [2024-06-27 18:41:05,107 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 310 predicate places. [2024-06-27 18:41:05,107 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 421 transitions, 8300 flow [2024-06-27 18:41:05,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:05,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:05,108 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 18:41:05,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:41:05,108 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 18:41:05,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1657894682, now seen corresponding path program 8 times [2024-06-27 18:41:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:05,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400715455] [2024-06-27 18:41:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:05,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:05,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400715455] [2024-06-27 18:41:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400715455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:05,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:05,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559016587] [2024-06-27 18:41:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:05,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:05,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:05,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:05,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 421 transitions, 8300 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 18:41:05,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:05,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:05,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,639 INFO L124 PetriNetUnfolderBase]: 3678/6837 cut-off events. [2024-06-27 18:41:07,639 INFO L125 PetriNetUnfolderBase]: For 138342/138345 co-relation queries the response was YES. [2024-06-27 18:41:07,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40408 conditions, 6837 events. 3678/6837 cut-off events. For 138342/138345 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 54196 event pairs, 1515 based on Foata normal form. 7/6619 useless extension candidates. Maximal degree in co-relation 40246. Up to 5658 conditions per place. [2024-06-27 18:41:07,717 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 347 selfloop transitions, 102 changer transitions 0/456 dead transitions. [2024-06-27 18:41:07,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 456 transitions, 9467 flow [2024-06-27 18:41:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:41:07,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 18:41:07,719 INFO L175 Difference]: Start difference. First operand has 349 places, 421 transitions, 8300 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:41:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 456 transitions, 9467 flow [2024-06-27 18:41:08,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 456 transitions, 9095 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:08,895 INFO L231 Difference]: Finished difference. Result has 351 places, 423 transitions, 8256 flow [2024-06-27 18:41:08,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7934, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8256, PETRI_PLACES=351, PETRI_TRANSITIONS=423} [2024-06-27 18:41:08,895 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 312 predicate places. [2024-06-27 18:41:08,895 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 423 transitions, 8256 flow [2024-06-27 18:41:08,896 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 18:41:08,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:08,896 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 18:41:08,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:41:08,896 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 18:41:08,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash 320129365, now seen corresponding path program 2 times [2024-06-27 18:41:08,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:08,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538562748] [2024-06-27 18:41:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:09,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538562748] [2024-06-27 18:41:09,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538562748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:09,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:09,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777293132] [2024-06-27 18:41:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:09,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:09,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:09,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:09,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 423 transitions, 8256 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 18:41:09,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:09,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:09,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:11,522 INFO L124 PetriNetUnfolderBase]: 3747/6984 cut-off events. [2024-06-27 18:41:11,522 INFO L125 PetriNetUnfolderBase]: For 131144/131147 co-relation queries the response was YES. [2024-06-27 18:41:11,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40670 conditions, 6984 events. 3747/6984 cut-off events. For 131144/131147 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 55800 event pairs, 1763 based on Foata normal form. 9/6796 useless extension candidates. Maximal degree in co-relation 40507. Up to 5501 conditions per place. [2024-06-27 18:41:11,600 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 299 selfloop transitions, 149 changer transitions 0/455 dead transitions. [2024-06-27 18:41:11,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 455 transitions, 9400 flow [2024-06-27 18:41:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:41:11,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342857142857143 [2024-06-27 18:41:11,601 INFO L175 Difference]: Start difference. First operand has 351 places, 423 transitions, 8256 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:41:11,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 455 transitions, 9400 flow [2024-06-27 18:41:12,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 455 transitions, 9126 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:12,846 INFO L231 Difference]: Finished difference. Result has 352 places, 425 transitions, 8439 flow [2024-06-27 18:41:12,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7982, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8439, PETRI_PLACES=352, PETRI_TRANSITIONS=425} [2024-06-27 18:41:12,846 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 313 predicate places. [2024-06-27 18:41:12,846 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 425 transitions, 8439 flow [2024-06-27 18:41:12,846 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 18:41:12,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:12,846 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 18:41:12,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:41:12,847 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 18:41:12,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:12,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1528721296, now seen corresponding path program 9 times [2024-06-27 18:41:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:12,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941864915] [2024-06-27 18:41:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:12,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941864915] [2024-06-27 18:41:13,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941864915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:13,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:13,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298274176] [2024-06-27 18:41:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:13,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:13,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:13,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:13,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:13,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 425 transitions, 8439 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 18:41:13,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:13,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:13,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:15,442 INFO L124 PetriNetUnfolderBase]: 3783/7056 cut-off events. [2024-06-27 18:41:15,442 INFO L125 PetriNetUnfolderBase]: For 125966/125969 co-relation queries the response was YES. [2024-06-27 18:41:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41288 conditions, 7056 events. 3783/7056 cut-off events. For 125966/125969 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 56703 event pairs, 1665 based on Foata normal form. 7/6851 useless extension candidates. Maximal degree in co-relation 41125. Up to 5947 conditions per place. [2024-06-27 18:41:15,524 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 319 selfloop transitions, 130 changer transitions 0/456 dead transitions. [2024-06-27 18:41:15,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 456 transitions, 9551 flow [2024-06-27 18:41:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:41:15,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43142857142857144 [2024-06-27 18:41:15,525 INFO L175 Difference]: Start difference. First operand has 352 places, 425 transitions, 8439 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:41:15,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 456 transitions, 9551 flow [2024-06-27 18:41:16,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 456 transitions, 9097 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-27 18:41:16,756 INFO L231 Difference]: Finished difference. Result has 351 places, 426 transitions, 8329 flow [2024-06-27 18:41:16,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8329, PETRI_PLACES=351, PETRI_TRANSITIONS=426} [2024-06-27 18:41:16,756 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 312 predicate places. [2024-06-27 18:41:16,756 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 426 transitions, 8329 flow [2024-06-27 18:41:16,757 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 18:41:16,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:16,757 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 18:41:16,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:41:16,757 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 18:41:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1363088234, now seen corresponding path program 10 times [2024-06-27 18:41:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:16,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815414961] [2024-06-27 18:41:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:17,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:17,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815414961] [2024-06-27 18:41:17,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815414961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:17,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:17,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:17,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197732909] [2024-06-27 18:41:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:17,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:17,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:17,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 426 transitions, 8329 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 18:41:17,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:17,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:19,499 INFO L124 PetriNetUnfolderBase]: 3863/7211 cut-off events. [2024-06-27 18:41:19,499 INFO L125 PetriNetUnfolderBase]: For 129722/129725 co-relation queries the response was YES. [2024-06-27 18:41:19,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41859 conditions, 7211 events. 3863/7211 cut-off events. For 129722/129725 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 58147 event pairs, 1807 based on Foata normal form. 7/6998 useless extension candidates. Maximal degree in co-relation 41696. Up to 6548 conditions per place. [2024-06-27 18:41:19,587 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 364 selfloop transitions, 86 changer transitions 0/457 dead transitions. [2024-06-27 18:41:19,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 457 transitions, 9473 flow [2024-06-27 18:41:19,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:19,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:41:19,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43116883116883115 [2024-06-27 18:41:19,588 INFO L175 Difference]: Start difference. First operand has 351 places, 426 transitions, 8329 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:41:19,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 457 transitions, 9473 flow [2024-06-27 18:41:20,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 457 transitions, 9163 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:20,820 INFO L231 Difference]: Finished difference. Result has 354 places, 429 transitions, 8313 flow [2024-06-27 18:41:20,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8313, PETRI_PLACES=354, PETRI_TRANSITIONS=429} [2024-06-27 18:41:20,821 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 315 predicate places. [2024-06-27 18:41:20,821 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 429 transitions, 8313 flow [2024-06-27 18:41:20,821 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 18:41:20,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:20,821 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 18:41:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:41:20,821 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 18:41:20,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1275152784, now seen corresponding path program 11 times [2024-06-27 18:41:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:20,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590594125] [2024-06-27 18:41:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:21,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:21,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590594125] [2024-06-27 18:41:21,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590594125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:21,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:21,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:21,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082690084] [2024-06-27 18:41:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:21,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:21,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:21,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:21,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:21,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 429 transitions, 8313 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 18:41:21,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:21,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:21,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:23,389 INFO L124 PetriNetUnfolderBase]: 3892/7271 cut-off events. [2024-06-27 18:41:23,389 INFO L125 PetriNetUnfolderBase]: For 111411/111414 co-relation queries the response was YES. [2024-06-27 18:41:23,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 7271 events. 3892/7271 cut-off events. For 111411/111414 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 58903 event pairs, 1520 based on Foata normal form. 7/7065 useless extension candidates. Maximal degree in co-relation 41333. Up to 5699 conditions per place. [2024-06-27 18:41:23,473 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 296 selfloop transitions, 154 changer transitions 0/457 dead transitions. [2024-06-27 18:41:23,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 457 transitions, 9393 flow [2024-06-27 18:41:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:23,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 18:41:23,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-27 18:41:23,476 INFO L175 Difference]: Start difference. First operand has 354 places, 429 transitions, 8313 flow. Second operand 9 states and 139 transitions. [2024-06-27 18:41:23,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 457 transitions, 9393 flow [2024-06-27 18:41:24,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 457 transitions, 9122 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-27 18:41:24,726 INFO L231 Difference]: Finished difference. Result has 354 places, 431 transitions, 8477 flow [2024-06-27 18:41:24,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8042, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8477, PETRI_PLACES=354, PETRI_TRANSITIONS=431} [2024-06-27 18:41:24,727 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 315 predicate places. [2024-06-27 18:41:24,727 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 431 transitions, 8477 flow [2024-06-27 18:41:24,727 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 18:41:24,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:24,727 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 18:41:24,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:41:24,727 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 18:41:24,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1336602710, now seen corresponding path program 12 times [2024-06-27 18:41:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658000770] [2024-06-27 18:41:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:24,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:25,366 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 18:41:25,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658000770] [2024-06-27 18:41:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658000770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002437841] [2024-06-27 18:41:25,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:25,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:25,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:25,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 431 transitions, 8477 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 18:41:25,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:25,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:25,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:27,339 INFO L124 PetriNetUnfolderBase]: 3928/7343 cut-off events. [2024-06-27 18:41:27,339 INFO L125 PetriNetUnfolderBase]: For 114577/114580 co-relation queries the response was YES. [2024-06-27 18:41:27,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42295 conditions, 7343 events. 3928/7343 cut-off events. For 114577/114580 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 59570 event pairs, 1536 based on Foata normal form. 7/7122 useless extension candidates. Maximal degree in co-relation 42130. Up to 5859 conditions per place. [2024-06-27 18:41:27,436 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 292 selfloop transitions, 161 changer transitions 0/460 dead transitions. [2024-06-27 18:41:27,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 460 transitions, 9611 flow [2024-06-27 18:41:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:41:27,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-27 18:41:27,438 INFO L175 Difference]: Start difference. First operand has 354 places, 431 transitions, 8477 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:41:27,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 460 transitions, 9611 flow [2024-06-27 18:41:28,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 460 transitions, 9210 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:28,627 INFO L231 Difference]: Finished difference. Result has 355 places, 432 transitions, 8502 flow [2024-06-27 18:41:28,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8076, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8502, PETRI_PLACES=355, PETRI_TRANSITIONS=432} [2024-06-27 18:41:28,628 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 316 predicate places. [2024-06-27 18:41:28,628 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 432 transitions, 8502 flow [2024-06-27 18:41:28,628 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 18:41:28,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:28,629 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 18:41:28,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:41:28,629 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 18:41:28,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:28,629 INFO L85 PathProgramCache]: Analyzing trace with hash -154572458, now seen corresponding path program 13 times [2024-06-27 18:41:28,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:28,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502921909] [2024-06-27 18:41:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:29,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:29,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502921909] [2024-06-27 18:41:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502921909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:29,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:29,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451432535] [2024-06-27 18:41:29,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:29,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-27 18:41:29,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 432 transitions, 8502 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 18:41:29,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:29,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-27 18:41:29,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:31,354 INFO L124 PetriNetUnfolderBase]: 3928/7343 cut-off events. [2024-06-27 18:41:31,354 INFO L125 PetriNetUnfolderBase]: For 101120/101123 co-relation queries the response was YES. [2024-06-27 18:41:31,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42101 conditions, 7343 events. 3928/7343 cut-off events. For 101120/101123 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 59432 event pairs, 1764 based on Foata normal form. 7/7130 useless extension candidates. Maximal degree in co-relation 41936. Up to 6123 conditions per place. [2024-06-27 18:41:31,435 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 317 selfloop transitions, 142 changer transitions 0/466 dead transitions. [2024-06-27 18:41:31,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 466 transitions, 9544 flow [2024-06-27 18:41:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:41:31,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-27 18:41:31,437 INFO L175 Difference]: Start difference. First operand has 355 places, 432 transitions, 8502 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:41:31,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 466 transitions, 9544 flow [2024-06-27 18:41:32,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 466 transitions, 8715 flow, removed 97 selfloop flow, removed 39 redundant places. [2024-06-27 18:41:32,171 INFO L231 Difference]: Finished difference. Result has 325 places, 432 transitions, 7903 flow [2024-06-27 18:41:32,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7903, PETRI_PLACES=325, PETRI_TRANSITIONS=432} [2024-06-27 18:41:32,172 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 286 predicate places. [2024-06-27 18:41:32,172 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 432 transitions, 7903 flow [2024-06-27 18:41:32,172 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 18:41:32,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:32,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:32,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:41:32,172 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:32,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2046657906, now seen corresponding path program 1 times [2024-06-27 18:41:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138900115] [2024-06-27 18:41:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:32,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:32,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138900115] [2024-06-27 18:41:32,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138900115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:32,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:32,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:41:32,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992565044] [2024-06-27 18:41:32,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:32,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:41:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:41:32,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:41:32,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-06-27 18:41:32,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 432 transitions, 7903 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:32,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:32,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-06-27 18:41:32,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:33,342 INFO L124 PetriNetUnfolderBase]: 2547/5539 cut-off events. [2024-06-27 18:41:33,342 INFO L125 PetriNetUnfolderBase]: For 46352/46550 co-relation queries the response was YES. [2024-06-27 18:41:33,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27468 conditions, 5539 events. 2547/5539 cut-off events. For 46352/46550 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 49310 event pairs, 534 based on Foata normal form. 548/5930 useless extension candidates. Maximal degree in co-relation 27335. Up to 1958 conditions per place. [2024-06-27 18:41:33,399 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 170 selfloop transitions, 101 changer transitions 0/355 dead transitions. [2024-06-27 18:41:33,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 355 transitions, 7337 flow [2024-06-27 18:41:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:41:33,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:41:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-27 18:41:33,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2024-06-27 18:41:33,400 INFO L175 Difference]: Start difference. First operand has 325 places, 432 transitions, 7903 flow. Second operand 5 states and 106 transitions. [2024-06-27 18:41:33,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 355 transitions, 7337 flow [2024-06-27 18:41:33,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 355 transitions, 5585 flow, removed 234 selfloop flow, removed 57 redundant places. [2024-06-27 18:41:33,708 INFO L231 Difference]: Finished difference. Result has 274 places, 346 transitions, 5331 flow [2024-06-27 18:41:33,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5331, PETRI_PLACES=274, PETRI_TRANSITIONS=346} [2024-06-27 18:41:33,709 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-06-27 18:41:33,709 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 346 transitions, 5331 flow [2024-06-27 18:41:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:33,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:33,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:41:33,709 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:33,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:33,710 INFO L85 PathProgramCache]: Analyzing trace with hash -940859440, now seen corresponding path program 1 times [2024-06-27 18:41:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926563154] [2024-06-27 18:41:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926563154] [2024-06-27 18:41:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926563154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:33,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:33,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591631554] [2024-06-27 18:41:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:33,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:33,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-06-27 18:41:33,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 346 transitions, 5331 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:33,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:33,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-06-27 18:41:33,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:34,803 INFO L124 PetriNetUnfolderBase]: 1987/4821 cut-off events. [2024-06-27 18:41:34,803 INFO L125 PetriNetUnfolderBase]: For 24947/24958 co-relation queries the response was YES. [2024-06-27 18:41:34,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21569 conditions, 4821 events. 1987/4821 cut-off events. For 24947/24958 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 45663 event pairs, 641 based on Foata normal form. 11/4453 useless extension candidates. Maximal degree in co-relation 21477. Up to 2825 conditions per place. [2024-06-27 18:41:34,834 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 27 selfloop transitions, 6 changer transitions 314/369 dead transitions. [2024-06-27 18:41:34,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 369 transitions, 5905 flow [2024-06-27 18:41:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:41:34,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-27 18:41:34,835 INFO L175 Difference]: Start difference. First operand has 274 places, 346 transitions, 5331 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:41:34,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 369 transitions, 5905 flow [2024-06-27 18:41:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 369 transitions, 5703 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:34,999 INFO L231 Difference]: Finished difference. Result has 282 places, 50 transitions, 286 flow [2024-06-27 18:41:34,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5129, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=286, PETRI_PLACES=282, PETRI_TRANSITIONS=50} [2024-06-27 18:41:35,000 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2024-06-27 18:41:35,000 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 50 transitions, 286 flow [2024-06-27 18:41:35,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:35,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:35,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:41:35,000 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:35,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1912402114, now seen corresponding path program 2 times [2024-06-27 18:41:35,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:35,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916853231] [2024-06-27 18:41:35,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:35,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:35,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:35,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916853231] [2024-06-27 18:41:35,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916853231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:35,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:35,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:35,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132546834] [2024-06-27 18:41:35,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:35,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:35,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:35,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:35,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:35,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-06-27 18:41:35,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 50 transitions, 286 flow. Second operand has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:35,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:35,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-06-27 18:41:35,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:35,928 INFO L124 PetriNetUnfolderBase]: 154/413 cut-off events. [2024-06-27 18:41:35,928 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2024-06-27 18:41:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 413 events. 154/413 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2173 event pairs, 47 based on Foata normal form. 4/384 useless extension candidates. Maximal degree in co-relation 1219. Up to 163 conditions per place. [2024-06-27 18:41:35,930 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 18 selfloop transitions, 7 changer transitions 27/66 dead transitions. [2024-06-27 18:41:35,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 66 transitions, 424 flow [2024-06-27 18:41:35,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:41:35,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828571428571429 [2024-06-27 18:41:35,931 INFO L175 Difference]: Start difference. First operand has 282 places, 50 transitions, 286 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:41:35,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 66 transitions, 424 flow [2024-06-27 18:41:35,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 66 transitions, 361 flow, removed 13 selfloop flow, removed 23 redundant places. [2024-06-27 18:41:35,934 INFO L231 Difference]: Finished difference. Result has 126 places, 34 transitions, 151 flow [2024-06-27 18:41:35,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=151, PETRI_PLACES=126, PETRI_TRANSITIONS=34} [2024-06-27 18:41:35,934 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2024-06-27 18:41:35,934 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 34 transitions, 151 flow [2024-06-27 18:41:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:35,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:35,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:41:35,935 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:35,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1967647954, now seen corresponding path program 3 times [2024-06-27 18:41:35,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:35,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048961580] [2024-06-27 18:41:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:35,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:41:35,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:41:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:41:35,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:41:35,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:41:35,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 18:41:35,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 18:41:35,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:41:35,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-27 18:41:35,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:41:35,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:41:35,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 18:41:35,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:41:35,986 INFO L445 BasicCegarLoop]: Path program histogram: [19, 16, 13, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,991 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:41:35,991 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:41:36,046 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:41:36,051 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:41:36,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:41:36 BasicIcfg [2024-06-27 18:41:36,052 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:41:36,053 INFO L158 Benchmark]: Toolchain (without parser) took 184706.59ms. Allocated memory was 157.3MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 124.2MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-27 18:41:36,053 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:41:36,053 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:41:36,053 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.74ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 91.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 18:41:36,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.41ms. Allocated memory is still 157.3MB. Free memory was 91.1MB in the beginning and 88.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:41:36,054 INFO L158 Benchmark]: Boogie Preprocessor took 76.51ms. Allocated memory is still 157.3MB. Free memory was 88.0MB in the beginning and 85.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 18:41:36,054 INFO L158 Benchmark]: RCFGBuilder took 575.41ms. Allocated memory was 157.3MB in the beginning and 222.3MB in the end (delta: 65.0MB). Free memory was 85.0MB in the beginning and 157.0MB in the end (delta: -72.0MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2024-06-27 18:41:36,054 INFO L158 Benchmark]: TraceAbstraction took 183382.44ms. Allocated memory was 222.3MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 156.0MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-06-27 18:41:36,055 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 157.3MB. Free memory is still 119.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.74ms. Allocated memory is still 157.3MB. Free memory was 123.6MB in the beginning and 91.1MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.41ms. Allocated memory is still 157.3MB. Free memory was 91.1MB in the beginning and 88.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.51ms. Allocated memory is still 157.3MB. Free memory was 88.0MB in the beginning and 85.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 575.41ms. Allocated memory was 157.3MB in the beginning and 222.3MB in the end (delta: 65.0MB). Free memory was 85.0MB in the beginning and 157.0MB in the end (delta: -72.0MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * TraceAbstraction took 183382.44ms. Allocated memory was 222.3MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 156.0MB in the beginning and 1.7GB in the end (delta: -1.5GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L715] 0 _Bool x$flush_delayed; [L716] 0 int x$mem_tmp; [L717] 0 _Bool x$r_buff0_thd0; [L718] 0 _Bool x$r_buff0_thd1; [L719] 0 _Bool x$r_buff0_thd2; [L720] 0 _Bool x$r_buff1_thd0; [L721] 0 _Bool x$r_buff1_thd1; [L722] 0 _Bool x$r_buff1_thd2; [L723] 0 _Bool x$read_delayed; [L724] 0 int *x$read_delayed_var; [L725] 0 int x$w_buff0; [L726] 0 _Bool x$w_buff0_used; [L727] 0 int x$w_buff1; [L728] 0 _Bool x$w_buff1_used; [L730] 0 int y = 0; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t1447; [L793] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L793] FCALL, FORK 0 pthread_create(&t1447, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L794] 0 pthread_t t1448; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L795] 0 //@ assert ((((((((((((((!multithreaded || (x$read_delayed_var == 0)) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))); [L795] FCALL, FORK 0 pthread_create(&t1448, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L756] 2 x$w_buff1 = x$w_buff0 [L757] 2 x$w_buff0 = 2 [L758] 2 x$w_buff1_used = x$w_buff0_used [L759] 2 x$w_buff0_used = (_Bool)1 [L760] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L760] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L761] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L762] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L763] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L764] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L767] 2 __unbuffered_p1_EAX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L736] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L739] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L742] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L743] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L744] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L745] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L746] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L770] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L771] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L772] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L773] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L774] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L796] 0 //@ assert ((((((((((((((!multithreaded || (x$read_delayed_var == 0)) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || ((y == 0) || (y == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (x$flush_delayed == (_Bool) 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))); VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L799] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L799] RET 0 assume_abort_if_not(main$tmp_guard0) [L801] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L802] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L803] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L804] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L805] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 x$flush_delayed = weak$$choice2 [L811] 0 x$mem_tmp = x [L812] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L813] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L814] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L815] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L816] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L818] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0) [L820] 0 x = x$flush_delayed ? x$mem_tmp : x [L821] 0 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=1, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L823] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 183.2s, OverallIterations: 100, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 131.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5854 SdHoareTripleChecker+Valid, 23.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5055 mSDsluCounter, 3075 SdHoareTripleChecker+Invalid, 19.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2659 mSDsCounter, 1551 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36056 IncrementalHoareTripleChecker+Invalid, 37607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1551 mSolverCounterUnsat, 416 mSDtfsCounter, 36056 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 955 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 941 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8502occurred in iteration=95, InterpolantAutomatonStates: 867, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 50.1s InterpolantComputationTime, 1525 NumberOfCodeBlocks, 1525 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 1401 ConstructedInterpolants, 0 QuantifiedInterpolants, 56706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 99 InterpolantComputations, 99 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:41:36,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE