./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.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/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.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 18:39:40,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:39:40,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:39:40,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:39:40,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:39:40,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:39:40,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:39:40,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:39:40,770 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:39:40,773 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:39:40,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:39:40,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:39:40,775 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:39:40,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:39:40,776 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:39:40,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:39:40,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:39:40,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:39:40,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:39:40,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:39:40,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:39:40,778 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:39:40,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:39:40,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:39:40,779 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:39:40,779 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:39:40,779 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:39:40,779 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:39:40,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:39:40,780 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:39:40,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:39:40,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:39:40,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:40,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:39:40,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:39:40,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:39:40,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:39:40,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:39:40,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:39:40,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:39:40,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:39:40,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:39:40,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:39:40,980 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:39:40,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:42,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:39:42,328 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:39:42,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:42,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e760dabcb/1333d2d580ea45d5850e1303216acaa6/FLAG9156867f7 [2024-06-27 18:39:42,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e760dabcb/1333d2d580ea45d5850e1303216acaa6 [2024-06-27 18:39:42,357 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:39:42,357 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:39:42,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:39:42,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:39:42,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:39:42,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:42,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:39:42,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:39:42,478 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:42" (1/2) ... [2024-06-27 18:39:42,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1686dca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:42, skipping insertion in model container [2024-06-27 18:39:42,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:39:42" (1/2) ... [2024-06-27 18:39:42,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a301cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:39:42, skipping insertion in model container [2024-06-27 18:39:42,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:42" (2/2) ... [2024-06-27 18:39:42,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1686dca7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:42, skipping insertion in model container [2024-06-27 18:39:42,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:42" (2/2) ... [2024-06-27 18:39:42,482 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:39:42,551 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:39:42,552 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 18:39:42,552 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 18:39:42,552 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:39:42,552 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-27 18:39:42,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:39:42,737 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/rfi000_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:39:42,951 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:42,958 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:39:42,987 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/rfi000_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:39:43,044 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:39:43,073 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:39:43,074 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43 WrapperNode [2024-06-27 18:39:43,075 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:39:43,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:43,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:39:43,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:39:43,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,141 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-06-27 18:39:43,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:39:43,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:39:43,142 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:39:43,142 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:39:43,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,167 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 18:39:43,167 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,167 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:39:43,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:39:43,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:39:43,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:39:43,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (1/1) ... [2024-06-27 18:39:43,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:39:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:39:43,270 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 18:39:43,287 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 18:39:43,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:39:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:39:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:39:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:39:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:39:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:39:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:39:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:39:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:39:43,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:39:43,304 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 18:39:43,433 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:39:43,435 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:39:43,790 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:39:43,791 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:39:43,934 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:39:43,935 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:39:43,935 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:43 BoogieIcfgContainer [2024-06-27 18:39:43,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:39:43,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:39:43,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:39:43,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:39:43,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:39:42" (1/4) ... [2024-06-27 18:39:43,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:39:43, skipping insertion in model container [2024-06-27 18:39:43,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:39:42" (2/4) ... [2024-06-27 18:39:43,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646c49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:43, skipping insertion in model container [2024-06-27 18:39:43,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:39:43" (3/4) ... [2024-06-27 18:39:43,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65646c49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:39:43, skipping insertion in model container [2024-06-27 18:39:43,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:39:43" (4/4) ... [2024-06-27 18:39:43,945 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:39:43,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:39:43,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:39:43,959 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:39:43,998 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:39:44,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:39:44,054 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:39:44,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:44,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:39:44,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:39:44,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:39:44,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:39:44,077 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;@28cb2af0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:39:44,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:39:44,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:39:44,081 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:39:44,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:39:44,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:44,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:39:44,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:44,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 384634525, now seen corresponding path program 1 times [2024-06-27 18:39:44,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:44,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071609713] [2024-06-27 18:39:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:44,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:44,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:44,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071609713] [2024-06-27 18:39:44,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071609713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:44,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:44,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:44,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335980940] [2024-06-27 18:39:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:44,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:39:44,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:44,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:44,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:39:44,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:45,124 INFO L124 PetriNetUnfolderBase]: 740/1388 cut-off events. [2024-06-27 18:39:45,129 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 18:39:45,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1388 events. 740/1388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7568 event pairs, 540 based on Foata normal form. 57/1313 useless extension candidates. Maximal degree in co-relation 2612. Up to 1205 conditions per place. [2024-06-27 18:39:45,141 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 34 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:39:45,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 177 flow [2024-06-27 18:39:45,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-27 18:39:45,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-27 18:39:45,153 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 72 transitions. [2024-06-27 18:39:45,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 177 flow [2024-06-27 18:39:45,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:45,158 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:39:45,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:39:45,163 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:39:45,164 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:39:45,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:45,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:45,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:39:45,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:39:45,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:45,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash 384634985, now seen corresponding path program 1 times [2024-06-27 18:39:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:45,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337384383] [2024-06-27 18:39:45,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:45,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:45,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:45,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337384383] [2024-06-27 18:39:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337384383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:45,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:39:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345748667] [2024-06-27 18:39:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:45,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:39:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:39:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:39:45,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-06-27 18:39:45,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:45,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:45,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-06-27 18:39:45,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:45,359 INFO L124 PetriNetUnfolderBase]: 247/555 cut-off events. [2024-06-27 18:39:45,359 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-27 18:39:45,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 555 events. 247/555 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3119 event pairs, 151 based on Foata normal form. 0/525 useless extension candidates. Maximal degree in co-relation 1054. Up to 364 conditions per place. [2024-06-27 18:39:45,363 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 27 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2024-06-27 18:39:45,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 183 flow [2024-06-27 18:39:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:39:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:39:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-06-27 18:39:45,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-06-27 18:39:45,366 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 3 states and 83 transitions. [2024-06-27 18:39:45,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 183 flow [2024-06-27 18:39:45,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:45,369 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 92 flow [2024-06-27 18:39:45,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-06-27 18:39:45,370 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:39:45,370 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 92 flow [2024-06-27 18:39:45,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:45,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:45,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:45,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:39:45,373 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:45,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 266627163, now seen corresponding path program 1 times [2024-06-27 18:39:45,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:45,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890429522] [2024-06-27 18:39:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:45,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:45,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:45,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890429522] [2024-06-27 18:39:45,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890429522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:45,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:45,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:39:45,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212536658] [2024-06-27 18:39:45,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:45,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:39:45,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:39:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:39:45,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:39:45,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 92 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 18:39:45,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:45,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:39:45,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:45,958 INFO L124 PetriNetUnfolderBase]: 546/1022 cut-off events. [2024-06-27 18:39:45,959 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-06-27 18:39:45,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1022 events. 546/1022 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5286 event pairs, 293 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 2144. Up to 886 conditions per place. [2024-06-27 18:39:45,965 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 38 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-06-27 18:39:45,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 228 flow [2024-06-27 18:39:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:39:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:39:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-06-27 18:39:45,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-06-27 18:39:45,968 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 92 flow. Second operand 4 states and 84 transitions. [2024-06-27 18:39:45,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 228 flow [2024-06-27 18:39:45,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:45,971 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 135 flow [2024-06-27 18:39:45,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:39:45,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2024-06-27 18:39:45,972 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 135 flow [2024-06-27 18:39:45,972 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 18:39:45,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:45,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:45,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:39:45,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:45,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:45,973 INFO L85 PathProgramCache]: Analyzing trace with hash -324491320, now seen corresponding path program 1 times [2024-06-27 18:39:45,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:45,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379982337] [2024-06-27 18:39:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:45,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:46,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:46,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379982337] [2024-06-27 18:39:46,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379982337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:46,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:46,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:39:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881173272] [2024-06-27 18:39:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:46,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:39:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:39:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:39:46,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:39:46,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 135 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 18:39:46,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:46,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:39:46,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:46,537 INFO L124 PetriNetUnfolderBase]: 570/1071 cut-off events. [2024-06-27 18:39:46,537 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-06-27 18:39:46,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 1071 events. 570/1071 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5694 event pairs, 230 based on Foata normal form. 3/1032 useless extension candidates. Maximal degree in co-relation 2413. Up to 861 conditions per place. [2024-06-27 18:39:46,542 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 50 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-27 18:39:46,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 353 flow [2024-06-27 18:39:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-27 18:39:46,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-06-27 18:39:46,543 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 135 flow. Second operand 5 states and 110 transitions. [2024-06-27 18:39:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 353 flow [2024-06-27 18:39:46,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 346 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:39:46,545 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 216 flow [2024-06-27 18:39:46,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-06-27 18:39:46,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:39:46,546 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 216 flow [2024-06-27 18:39:46,546 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 18:39:46,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:46,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:46,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:39:46,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:46,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1469295078, now seen corresponding path program 1 times [2024-06-27 18:39:46,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:46,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010692334] [2024-06-27 18:39:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:46,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,026 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 18:39:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010692334] [2024-06-27 18:39:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010692334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61003861] [2024-06-27 18:39:47,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:39:47,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 18:39:47,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:39:47,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:47,302 INFO L124 PetriNetUnfolderBase]: 597/1151 cut-off events. [2024-06-27 18:39:47,303 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES. [2024-06-27 18:39:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 1151 events. 597/1151 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6274 event pairs, 148 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 2978. Up to 831 conditions per place. [2024-06-27 18:39:47,309 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 72 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-27 18:39:47,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 105 transitions, 646 flow [2024-06-27 18:39:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:47,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:47,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-27 18:39:47,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-06-27 18:39:47,311 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 216 flow. Second operand 6 states and 134 transitions. [2024-06-27 18:39:47,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 105 transitions, 646 flow [2024-06-27 18:39:47,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 105 transitions, 638 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:39:47,314 INFO L231 Difference]: Finished difference. Result has 59 places, 70 transitions, 428 flow [2024-06-27 18:39:47,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=428, PETRI_PLACES=59, PETRI_TRANSITIONS=70} [2024-06-27 18:39:47,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 18:39:47,315 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 70 transitions, 428 flow [2024-06-27 18:39:47,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 18:39:47,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:47,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:47,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:39:47,316 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:47,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:47,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1696494119, now seen corresponding path program 1 times [2024-06-27 18:39:47,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:47,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487729586] [2024-06-27 18:39:47,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:47,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:47,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487729586] [2024-06-27 18:39:47,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487729586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727328178] [2024-06-27 18:39:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:47,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:47,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:39:47,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 70 transitions, 428 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 18:39:47,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:39:47,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:48,229 INFO L124 PetriNetUnfolderBase]: 619/1189 cut-off events. [2024-06-27 18:39:48,230 INFO L125 PetriNetUnfolderBase]: For 2037/2037 co-relation queries the response was YES. [2024-06-27 18:39:48,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1189 events. 619/1189 cut-off events. For 2037/2037 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6545 event pairs, 89 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 3711. Up to 811 conditions per place. [2024-06-27 18:39:48,236 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 75 selfloop transitions, 29 changer transitions 0/112 dead transitions. [2024-06-27 18:39:48,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 816 flow [2024-06-27 18:39:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 18:39:48,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583011583011583 [2024-06-27 18:39:48,238 INFO L175 Difference]: Start difference. First operand has 59 places, 70 transitions, 428 flow. Second operand 7 states and 151 transitions. [2024-06-27 18:39:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 816 flow [2024-06-27 18:39:48,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 112 transitions, 808 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 18:39:48,243 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 509 flow [2024-06-27 18:39:48,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=509, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2024-06-27 18:39:48,243 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-27 18:39:48,244 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 509 flow [2024-06-27 18:39:48,244 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 18:39:48,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:39:48,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:48,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1022446416, now seen corresponding path program 1 times [2024-06-27 18:39:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037389844] [2024-06-27 18:39:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:48,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037389844] [2024-06-27 18:39:48,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037389844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:48,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:48,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:39:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124716277] [2024-06-27 18:39:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:39:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:48,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:39:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:39:48,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:48,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 509 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 18:39:48,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:48,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:48,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:48,864 INFO L124 PetriNetUnfolderBase]: 713/1332 cut-off events. [2024-06-27 18:39:48,864 INFO L125 PetriNetUnfolderBase]: For 2846/2846 co-relation queries the response was YES. [2024-06-27 18:39:48,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4554 conditions, 1332 events. 713/1332 cut-off events. For 2846/2846 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7063 event pairs, 212 based on Foata normal form. 1/1279 useless extension candidates. Maximal degree in co-relation 4525. Up to 1149 conditions per place. [2024-06-27 18:39:48,873 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 71 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-27 18:39:48,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 741 flow [2024-06-27 18:39:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:39:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:39:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 18:39:48,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:39:48,875 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 509 flow. Second operand 5 states and 85 transitions. [2024-06-27 18:39:48,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 741 flow [2024-06-27 18:39:48,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 89 transitions, 664 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:39:48,881 INFO L231 Difference]: Finished difference. Result has 65 places, 76 transitions, 503 flow [2024-06-27 18:39:48,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=65, PETRI_TRANSITIONS=76} [2024-06-27 18:39:48,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-27 18:39:48,883 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 76 transitions, 503 flow [2024-06-27 18:39:48,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 18:39:48,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:48,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:48,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:39:48,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:48,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1618124829, now seen corresponding path program 1 times [2024-06-27 18:39:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582856492] [2024-06-27 18:39:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:49,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:49,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582856492] [2024-06-27 18:39:49,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582856492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:49,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:49,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:49,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964505984] [2024-06-27 18:39:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:49,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:49,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:49,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:49,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:49,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 76 transitions, 503 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 18:39:49,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:49,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:49,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:49,623 INFO L124 PetriNetUnfolderBase]: 711/1332 cut-off events. [2024-06-27 18:39:49,623 INFO L125 PetriNetUnfolderBase]: For 2955/2955 co-relation queries the response was YES. [2024-06-27 18:39:49,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 1332 events. 711/1332 cut-off events. For 2955/2955 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7118 event pairs, 210 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 4401. Up to 1143 conditions per place. [2024-06-27 18:39:49,631 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 72 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-27 18:39:49,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 739 flow [2024-06-27 18:39:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 18:39:49,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:39:49,633 INFO L175 Difference]: Start difference. First operand has 65 places, 76 transitions, 503 flow. Second operand 6 states and 98 transitions. [2024-06-27 18:39:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 739 flow [2024-06-27 18:39:49,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 706 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:49,638 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 554 flow [2024-06-27 18:39:49,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2024-06-27 18:39:49,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-27 18:39:49,639 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 554 flow [2024-06-27 18:39:49,639 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 18:39:49,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:49,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:49,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:39:49,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:49,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:49,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1159109110, now seen corresponding path program 1 times [2024-06-27 18:39:49,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:49,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913466642] [2024-06-27 18:39:49,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:49,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:50,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:50,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:50,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913466642] [2024-06-27 18:39:50,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913466642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:50,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:50,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:50,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142020905] [2024-06-27 18:39:50,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:50,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:50,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:50,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:50,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:50,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:50,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 554 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 18:39:50,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:50,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:50,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:50,348 INFO L124 PetriNetUnfolderBase]: 722/1350 cut-off events. [2024-06-27 18:39:50,349 INFO L125 PetriNetUnfolderBase]: For 3267/3267 co-relation queries the response was YES. [2024-06-27 18:39:50,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 1350 events. 722/1350 cut-off events. For 3267/3267 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7249 event pairs, 161 based on Foata normal form. 2/1297 useless extension candidates. Maximal degree in co-relation 4554. Up to 1079 conditions per place. [2024-06-27 18:39:50,356 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 81 selfloop transitions, 19 changer transitions 0/106 dead transitions. [2024-06-27 18:39:50,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 106 transitions, 862 flow [2024-06-27 18:39:50,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 18:39:50,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2024-06-27 18:39:50,358 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 554 flow. Second operand 6 states and 107 transitions. [2024-06-27 18:39:50,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 106 transitions, 862 flow [2024-06-27 18:39:50,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 836 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:50,364 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 607 flow [2024-06-27 18:39:50,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=607, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-06-27 18:39:50,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-27 18:39:50,365 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 607 flow [2024-06-27 18:39:50,365 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 18:39:50,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:50,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:50,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:39:50,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:50,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:50,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1146014710, now seen corresponding path program 2 times [2024-06-27 18:39:50,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:50,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517002753] [2024-06-27 18:39:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:50,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:50,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517002753] [2024-06-27 18:39:50,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517002753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:50,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:39:50,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258805296] [2024-06-27 18:39:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:50,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:39:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:50,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:39:50,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:39:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:50,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 607 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 18:39:50,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:50,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:50,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:51,077 INFO L124 PetriNetUnfolderBase]: 717/1339 cut-off events. [2024-06-27 18:39:51,077 INFO L125 PetriNetUnfolderBase]: For 3622/3622 co-relation queries the response was YES. [2024-06-27 18:39:51,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 1339 events. 717/1339 cut-off events. For 3622/3622 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7156 event pairs, 210 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 4634. Up to 1152 conditions per place. [2024-06-27 18:39:51,084 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 81 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-06-27 18:39:51,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 830 flow [2024-06-27 18:39:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:39:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:39:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-27 18:39:51,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-27 18:39:51,086 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 607 flow. Second operand 6 states and 97 transitions. [2024-06-27 18:39:51,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 830 flow [2024-06-27 18:39:51,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 98 transitions, 807 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:51,095 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 612 flow [2024-06-27 18:39:51,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-06-27 18:39:51,097 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 35 predicate places. [2024-06-27 18:39:51,097 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 612 flow [2024-06-27 18:39:51,097 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 18:39:51,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:51,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:51,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:39:51,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:51,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1377736147, now seen corresponding path program 1 times [2024-06-27 18:39:51,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:51,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010848515] [2024-06-27 18:39:51,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:51,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:51,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:51,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010848515] [2024-06-27 18:39:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010848515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:51,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:51,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788125496] [2024-06-27 18:39:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:51,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:51,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:51,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:51,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 612 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 18:39:51,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:51,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:51,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:52,132 INFO L124 PetriNetUnfolderBase]: 715/1336 cut-off events. [2024-06-27 18:39:52,132 INFO L125 PetriNetUnfolderBase]: For 3956/3956 co-relation queries the response was YES. [2024-06-27 18:39:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 1336 events. 715/1336 cut-off events. For 3956/3956 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7101 event pairs, 204 based on Foata normal form. 1/1282 useless extension candidates. Maximal degree in co-relation 4638. Up to 1124 conditions per place. [2024-06-27 18:39:52,142 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 83 selfloop transitions, 20 changer transitions 0/109 dead transitions. [2024-06-27 18:39:52,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 904 flow [2024-06-27 18:39:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 18:39:52,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-27 18:39:52,144 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 612 flow. Second operand 7 states and 117 transitions. [2024-06-27 18:39:52,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 904 flow [2024-06-27 18:39:52,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 849 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:52,153 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 644 flow [2024-06-27 18:39:52,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-06-27 18:39:52,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 18:39:52,154 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 644 flow [2024-06-27 18:39:52,154 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 18:39:52,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:52,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:39:52,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:52,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:52,155 INFO L85 PathProgramCache]: Analyzing trace with hash 33847391, now seen corresponding path program 1 times [2024-06-27 18:39:52,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:52,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296279726] [2024-06-27 18:39:52,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296279726] [2024-06-27 18:39:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296279726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553605878] [2024-06-27 18:39:52,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:52,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:52,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 644 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 18:39:52,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:52,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:52,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:52,888 INFO L124 PetriNetUnfolderBase]: 748/1390 cut-off events. [2024-06-27 18:39:52,888 INFO L125 PetriNetUnfolderBase]: For 4528/4528 co-relation queries the response was YES. [2024-06-27 18:39:52,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5021 conditions, 1390 events. 748/1390 cut-off events. For 4528/4528 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7447 event pairs, 154 based on Foata normal form. 3/1337 useless extension candidates. Maximal degree in co-relation 4984. Up to 981 conditions per place. [2024-06-27 18:39:52,905 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 86 selfloop transitions, 41 changer transitions 0/133 dead transitions. [2024-06-27 18:39:52,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 1159 flow [2024-06-27 18:39:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:52,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:39:52,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-06-27 18:39:52,907 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 644 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:39:52,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 1159 flow [2024-06-27 18:39:52,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 133 transitions, 1127 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:52,918 INFO L231 Difference]: Finished difference. Result has 84 places, 106 transitions, 892 flow [2024-06-27 18:39:52,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=84, PETRI_TRANSITIONS=106} [2024-06-27 18:39:52,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-27 18:39:52,921 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 106 transitions, 892 flow [2024-06-27 18:39:52,921 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 18:39:52,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:52,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:39:52,922 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:52,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -205229767, now seen corresponding path program 2 times [2024-06-27 18:39:52,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:52,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426505790] [2024-06-27 18:39:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:52,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:53,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426505790] [2024-06-27 18:39:53,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426505790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:53,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:53,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379773958] [2024-06-27 18:39:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:53,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:53,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 892 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 18:39:53,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:53,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:53,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:53,776 INFO L124 PetriNetUnfolderBase]: 760/1404 cut-off events. [2024-06-27 18:39:53,776 INFO L125 PetriNetUnfolderBase]: For 5254/5254 co-relation queries the response was YES. [2024-06-27 18:39:53,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 1404 events. 760/1404 cut-off events. For 5254/5254 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7451 event pairs, 196 based on Foata normal form. 1/1350 useless extension candidates. Maximal degree in co-relation 5559. Up to 1206 conditions per place. [2024-06-27 18:39:53,785 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 101 selfloop transitions, 22 changer transitions 0/129 dead transitions. [2024-06-27 18:39:53,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 129 transitions, 1245 flow [2024-06-27 18:39:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 18:39:53,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2024-06-27 18:39:53,786 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 892 flow. Second operand 7 states and 114 transitions. [2024-06-27 18:39:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 129 transitions, 1245 flow [2024-06-27 18:39:53,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 1212 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-27 18:39:53,799 INFO L231 Difference]: Finished difference. Result has 90 places, 113 transitions, 992 flow [2024-06-27 18:39:53,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=992, PETRI_PLACES=90, PETRI_TRANSITIONS=113} [2024-06-27 18:39:53,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-27 18:39:53,799 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 113 transitions, 992 flow [2024-06-27 18:39:53,800 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 18:39:53,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:53,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:53,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:39:53,800 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:53,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash -621080197, now seen corresponding path program 3 times [2024-06-27 18:39:53,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:53,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372748319] [2024-06-27 18:39:53,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372748319] [2024-06-27 18:39:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372748319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181032794] [2024-06-27 18:39:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:54,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:54,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 113 transitions, 992 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 18:39:54,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:54,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:54,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:54,542 INFO L124 PetriNetUnfolderBase]: 760/1401 cut-off events. [2024-06-27 18:39:54,542 INFO L125 PetriNetUnfolderBase]: For 5814/5814 co-relation queries the response was YES. [2024-06-27 18:39:54,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5736 conditions, 1401 events. 760/1401 cut-off events. For 5814/5814 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7464 event pairs, 198 based on Foata normal form. 1/1348 useless extension candidates. Maximal degree in co-relation 5692. Up to 1186 conditions per place. [2024-06-27 18:39:54,551 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 103 selfloop transitions, 28 changer transitions 0/137 dead transitions. [2024-06-27 18:39:54,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 1378 flow [2024-06-27 18:39:54,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 18:39:54,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444015444015444 [2024-06-27 18:39:54,553 INFO L175 Difference]: Start difference. First operand has 90 places, 113 transitions, 992 flow. Second operand 7 states and 115 transitions. [2024-06-27 18:39:54,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 1378 flow [2024-06-27 18:39:54,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 137 transitions, 1343 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:54,565 INFO L231 Difference]: Finished difference. Result has 95 places, 120 transitions, 1117 flow [2024-06-27 18:39:54,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1117, PETRI_PLACES=95, PETRI_TRANSITIONS=120} [2024-06-27 18:39:54,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-27 18:39:54,565 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 120 transitions, 1117 flow [2024-06-27 18:39:54,566 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 18:39:54,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:54,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:39:54,566 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:54,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 239854140, now seen corresponding path program 1 times [2024-06-27 18:39:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269409302] [2024-06-27 18:39:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:55,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:55,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269409302] [2024-06-27 18:39:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269409302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:55,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:55,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:55,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169278320] [2024-06-27 18:39:55,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:55,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:55,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:55,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 120 transitions, 1117 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 18:39:55,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:55,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:55,868 INFO L124 PetriNetUnfolderBase]: 756/1389 cut-off events. [2024-06-27 18:39:55,869 INFO L125 PetriNetUnfolderBase]: For 6426/6426 co-relation queries the response was YES. [2024-06-27 18:39:55,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 1389 events. 756/1389 cut-off events. For 6426/6426 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7289 event pairs, 186 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 5760. Up to 1158 conditions per place. [2024-06-27 18:39:55,876 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 120 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-27 18:39:55,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 1499 flow [2024-06-27 18:39:55,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:39:55,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:39:55,877 INFO L175 Difference]: Start difference. First operand has 95 places, 120 transitions, 1117 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:39:55,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 1499 flow [2024-06-27 18:39:55,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1452 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:39:55,895 INFO L231 Difference]: Finished difference. Result has 100 places, 122 transitions, 1139 flow [2024-06-27 18:39:55,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1139, PETRI_PLACES=100, PETRI_TRANSITIONS=122} [2024-06-27 18:39:55,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 18:39:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 122 transitions, 1139 flow [2024-06-27 18:39:55,897 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 18:39:55,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:55,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:55,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:39:55,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:55,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1511086647, now seen corresponding path program 1 times [2024-06-27 18:39:55,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:55,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798304135] [2024-06-27 18:39:55,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:55,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:56,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:56,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798304135] [2024-06-27 18:39:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798304135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:56,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:56,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376172845] [2024-06-27 18:39:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:56,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:56,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 122 transitions, 1139 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:56,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:56,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:56,917 INFO L124 PetriNetUnfolderBase]: 768/1421 cut-off events. [2024-06-27 18:39:56,917 INFO L125 PetriNetUnfolderBase]: For 6878/6878 co-relation queries the response was YES. [2024-06-27 18:39:56,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 1421 events. 768/1421 cut-off events. For 6878/6878 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7650 event pairs, 150 based on Foata normal form. 1/1366 useless extension candidates. Maximal degree in co-relation 6022. Up to 1100 conditions per place. [2024-06-27 18:39:56,927 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 130 selfloop transitions, 34 changer transitions 0/170 dead transitions. [2024-06-27 18:39:56,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 170 transitions, 1720 flow [2024-06-27 18:39:56,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:39:56,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 18:39:56,928 INFO L175 Difference]: Start difference. First operand has 100 places, 122 transitions, 1139 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:39:56,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 170 transitions, 1720 flow [2024-06-27 18:39:56,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 170 transitions, 1669 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:39:56,945 INFO L231 Difference]: Finished difference. Result has 103 places, 134 transitions, 1314 flow [2024-06-27 18:39:56,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=103, PETRI_TRANSITIONS=134} [2024-06-27 18:39:56,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:39:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 134 transitions, 1314 flow [2024-06-27 18:39:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:56,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:56,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:56,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:39:56,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:56,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:56,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1507277212, now seen corresponding path program 1 times [2024-06-27 18:39:56,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:56,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537080189] [2024-06-27 18:39:56,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:56,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:57,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:57,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537080189] [2024-06-27 18:39:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537080189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:57,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377195371] [2024-06-27 18:39:57,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:57,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:57,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:57,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:57,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:57,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:57,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 134 transitions, 1314 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:57,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:57,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:57,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:57,702 INFO L124 PetriNetUnfolderBase]: 776/1421 cut-off events. [2024-06-27 18:39:57,702 INFO L125 PetriNetUnfolderBase]: For 7722/7722 co-relation queries the response was YES. [2024-06-27 18:39:57,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1421 events. 776/1421 cut-off events. For 7722/7722 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7514 event pairs, 164 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 6261. Up to 1006 conditions per place. [2024-06-27 18:39:57,710 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 97 selfloop transitions, 62 changer transitions 0/165 dead transitions. [2024-06-27 18:39:57,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1815 flow [2024-06-27 18:39:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 18:39:57,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057915057915058 [2024-06-27 18:39:57,712 INFO L175 Difference]: Start difference. First operand has 103 places, 134 transitions, 1314 flow. Second operand 7 states and 131 transitions. [2024-06-27 18:39:57,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1815 flow [2024-06-27 18:39:57,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 165 transitions, 1737 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:57,727 INFO L231 Difference]: Finished difference. Result has 107 places, 139 transitions, 1450 flow [2024-06-27 18:39:57,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1450, PETRI_PLACES=107, PETRI_TRANSITIONS=139} [2024-06-27 18:39:57,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 18:39:57,728 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 139 transitions, 1450 flow [2024-06-27 18:39:57,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:57,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:57,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:39:57,729 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:57,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:57,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1507271632, now seen corresponding path program 2 times [2024-06-27 18:39:57,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:57,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544428021] [2024-06-27 18:39:57,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:39:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544428021] [2024-06-27 18:39:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544428021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:39:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080339738] [2024-06-27 18:39:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:39:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:39:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:39:58,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:58,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 139 transitions, 1450 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:58,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:58,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:58,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:58,478 INFO L124 PetriNetUnfolderBase]: 786/1442 cut-off events. [2024-06-27 18:39:58,479 INFO L125 PetriNetUnfolderBase]: For 8623/8623 co-relation queries the response was YES. [2024-06-27 18:39:58,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6693 conditions, 1442 events. 786/1442 cut-off events. For 8623/8623 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7697 event pairs, 165 based on Foata normal form. 1/1389 useless extension candidates. Maximal degree in co-relation 6640. Up to 1012 conditions per place. [2024-06-27 18:39:58,489 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 98 selfloop transitions, 60 changer transitions 0/164 dead transitions. [2024-06-27 18:39:58,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 164 transitions, 1896 flow [2024-06-27 18:39:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:39:58,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:39:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 18:39:58,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-27 18:39:58,495 INFO L175 Difference]: Start difference. First operand has 107 places, 139 transitions, 1450 flow. Second operand 7 states and 125 transitions. [2024-06-27 18:39:58,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 164 transitions, 1896 flow [2024-06-27 18:39:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 164 transitions, 1793 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:58,515 INFO L231 Difference]: Finished difference. Result has 110 places, 142 transitions, 1508 flow [2024-06-27 18:39:58,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1508, PETRI_PLACES=110, PETRI_TRANSITIONS=142} [2024-06-27 18:39:58,516 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 69 predicate places. [2024-06-27 18:39:58,516 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 142 transitions, 1508 flow [2024-06-27 18:39:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:39:58,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:39:58,517 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:58,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1507271415, now seen corresponding path program 1 times [2024-06-27 18:39:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476207947] [2024-06-27 18:39:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:59,167 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 18:39:59,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476207947] [2024-06-27 18:39:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476207947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:59,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:59,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:39:59,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12095057] [2024-06-27 18:39:59,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:59,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:39:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:59,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:39:59,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:39:59,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:59,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 142 transitions, 1508 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 18:39:59,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:59,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:59,590 INFO L124 PetriNetUnfolderBase]: 824/1499 cut-off events. [2024-06-27 18:39:59,591 INFO L125 PetriNetUnfolderBase]: For 9505/9505 co-relation queries the response was YES. [2024-06-27 18:39:59,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 1499 events. 824/1499 cut-off events. For 9505/9505 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7986 event pairs, 147 based on Foata normal form. 2/1448 useless extension candidates. Maximal degree in co-relation 6969. Up to 964 conditions per place. [2024-06-27 18:39:59,600 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 139 selfloop transitions, 48 changer transitions 0/193 dead transitions. [2024-06-27 18:39:59,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 193 transitions, 2194 flow [2024-06-27 18:39:59,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:39:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:39:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:39:59,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:39:59,609 INFO L175 Difference]: Start difference. First operand has 110 places, 142 transitions, 1508 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:39:59,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 193 transitions, 2194 flow [2024-06-27 18:39:59,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 2110 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:39:59,668 INFO L231 Difference]: Finished difference. Result has 117 places, 156 transitions, 1731 flow [2024-06-27 18:39:59,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1731, PETRI_PLACES=117, PETRI_TRANSITIONS=156} [2024-06-27 18:39:59,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-27 18:39:59,669 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 156 transitions, 1731 flow [2024-06-27 18:39:59,669 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 18:39:59,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:59,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:39:59,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:39:59,669 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:39:59,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:59,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2066858035, now seen corresponding path program 2 times [2024-06-27 18:39:59,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:59,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021545433] [2024-06-27 18:39:59,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:59,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:00,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:00,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021545433] [2024-06-27 18:40:00,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021545433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:00,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:00,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743054749] [2024-06-27 18:40:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:00,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:00,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 156 transitions, 1731 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 18:40:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:00,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:00,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:00,801 INFO L124 PetriNetUnfolderBase]: 845/1555 cut-off events. [2024-06-27 18:40:00,802 INFO L125 PetriNetUnfolderBase]: For 11490/11490 co-relation queries the response was YES. [2024-06-27 18:40:00,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 1555 events. 845/1555 cut-off events. For 11490/11490 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8444 event pairs, 199 based on Foata normal form. 1/1495 useless extension candidates. Maximal degree in co-relation 7553. Up to 1305 conditions per place. [2024-06-27 18:40:00,811 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 30 changer transitions 0/190 dead transitions. [2024-06-27 18:40:00,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 190 transitions, 2241 flow [2024-06-27 18:40:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:40:00,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 18:40:00,825 INFO L175 Difference]: Start difference. First operand has 117 places, 156 transitions, 1731 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:40:00,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 190 transitions, 2241 flow [2024-06-27 18:40:00,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 190 transitions, 2172 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:00,854 INFO L231 Difference]: Finished difference. Result has 125 places, 164 transitions, 1822 flow [2024-06-27 18:40:00,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1822, PETRI_PLACES=125, PETRI_TRANSITIONS=164} [2024-06-27 18:40:00,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-27 18:40:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 164 transitions, 1822 flow [2024-06-27 18:40:00,855 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 18:40:00,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:00,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:40:00,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:00,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1154761322, now seen corresponding path program 3 times [2024-06-27 18:40:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061558438] [2024-06-27 18:40:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:01,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061558438] [2024-06-27 18:40:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061558438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754715373] [2024-06-27 18:40:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:01,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:01,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 164 transitions, 1822 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:01,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:01,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:01,740 INFO L124 PetriNetUnfolderBase]: 843/1545 cut-off events. [2024-06-27 18:40:01,740 INFO L125 PetriNetUnfolderBase]: For 12104/12104 co-relation queries the response was YES. [2024-06-27 18:40:01,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7706 conditions, 1545 events. 843/1545 cut-off events. For 12104/12104 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8371 event pairs, 204 based on Foata normal form. 1/1487 useless extension candidates. Maximal degree in co-relation 7644. Up to 1325 conditions per place. [2024-06-27 18:40:01,776 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 155 selfloop transitions, 23 changer transitions 0/184 dead transitions. [2024-06-27 18:40:01,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 2267 flow [2024-06-27 18:40:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 18:40:01,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444015444015444 [2024-06-27 18:40:01,780 INFO L175 Difference]: Start difference. First operand has 125 places, 164 transitions, 1822 flow. Second operand 7 states and 115 transitions. [2024-06-27 18:40:01,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 2267 flow [2024-06-27 18:40:01,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 184 transitions, 2208 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:01,815 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1858 flow [2024-06-27 18:40:01,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1858, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2024-06-27 18:40:01,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 18:40:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1858 flow [2024-06-27 18:40:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:01,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:01,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:01,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:40:01,816 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:01,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:01,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1808454903, now seen corresponding path program 3 times [2024-06-27 18:40:01,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:01,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189413749] [2024-06-27 18:40:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:01,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:02,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:02,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189413749] [2024-06-27 18:40:02,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189413749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:02,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:02,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:02,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120933581] [2024-06-27 18:40:02,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:02,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:02,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:02,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:02,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1858 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 18:40:02,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:02,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:02,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:03,024 INFO L124 PetriNetUnfolderBase]: 859/1575 cut-off events. [2024-06-27 18:40:03,024 INFO L125 PetriNetUnfolderBase]: For 12627/12627 co-relation queries the response was YES. [2024-06-27 18:40:03,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7855 conditions, 1575 events. 859/1575 cut-off events. For 12627/12627 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8574 event pairs, 196 based on Foata normal form. 1/1515 useless extension candidates. Maximal degree in co-relation 7792. Up to 1246 conditions per place. [2024-06-27 18:40:03,034 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 162 selfloop transitions, 41 changer transitions 0/209 dead transitions. [2024-06-27 18:40:03,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 209 transitions, 2520 flow [2024-06-27 18:40:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:40:03,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:40:03,035 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1858 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:40:03,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 209 transitions, 2520 flow [2024-06-27 18:40:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 209 transitions, 2468 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:03,067 INFO L231 Difference]: Finished difference. Result has 135 places, 174 transitions, 2017 flow [2024-06-27 18:40:03,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2017, PETRI_PLACES=135, PETRI_TRANSITIONS=174} [2024-06-27 18:40:03,067 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-27 18:40:03,068 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 174 transitions, 2017 flow [2024-06-27 18:40:03,068 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 18:40:03,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:03,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:03,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:40:03,068 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:03,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:03,069 INFO L85 PathProgramCache]: Analyzing trace with hash -2065369837, now seen corresponding path program 4 times [2024-06-27 18:40:03,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:03,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932292899] [2024-06-27 18:40:03,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:03,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:03,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932292899] [2024-06-27 18:40:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932292899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:03,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:03,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979275646] [2024-06-27 18:40:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:03,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:03,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:03,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:03,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:03,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 174 transitions, 2017 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 18:40:03,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:03,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:03,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:04,157 INFO L124 PetriNetUnfolderBase]: 865/1591 cut-off events. [2024-06-27 18:40:04,157 INFO L125 PetriNetUnfolderBase]: For 13953/13953 co-relation queries the response was YES. [2024-06-27 18:40:04,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8168 conditions, 1591 events. 865/1591 cut-off events. For 13953/13953 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8705 event pairs, 199 based on Foata normal form. 1/1529 useless extension candidates. Maximal degree in co-relation 8102. Up to 1322 conditions per place. [2024-06-27 18:40:04,169 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 167 selfloop transitions, 32 changer transitions 0/205 dead transitions. [2024-06-27 18:40:04,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 205 transitions, 2559 flow [2024-06-27 18:40:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:40:04,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 18:40:04,178 INFO L175 Difference]: Start difference. First operand has 135 places, 174 transitions, 2017 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:40:04,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 205 transitions, 2559 flow [2024-06-27 18:40:04,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 205 transitions, 2472 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:04,221 INFO L231 Difference]: Finished difference. Result has 140 places, 178 transitions, 2068 flow [2024-06-27 18:40:04,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2068, PETRI_PLACES=140, PETRI_TRANSITIONS=178} [2024-06-27 18:40:04,222 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 18:40:04,222 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 178 transitions, 2068 flow [2024-06-27 18:40:04,222 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 18:40:04,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:04,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:04,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:40:04,223 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:04,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 400895300, now seen corresponding path program 1 times [2024-06-27 18:40:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326628060] [2024-06-27 18:40:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:04,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:04,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:04,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326628060] [2024-06-27 18:40:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326628060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:04,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843970460] [2024-06-27 18:40:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:04,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:04,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:04,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 178 transitions, 2068 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:04,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:04,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:04,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:05,334 INFO L124 PetriNetUnfolderBase]: 898/1641 cut-off events. [2024-06-27 18:40:05,334 INFO L125 PetriNetUnfolderBase]: For 15833/15833 co-relation queries the response was YES. [2024-06-27 18:40:05,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8563 conditions, 1641 events. 898/1641 cut-off events. For 15833/15833 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9082 event pairs, 105 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 8494. Up to 1076 conditions per place. [2024-06-27 18:40:05,368 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 146 selfloop transitions, 63 changer transitions 0/215 dead transitions. [2024-06-27 18:40:05,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 215 transitions, 2752 flow [2024-06-27 18:40:05,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:05,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:40:05,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 18:40:05,377 INFO L175 Difference]: Start difference. First operand has 140 places, 178 transitions, 2068 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:40:05,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 215 transitions, 2752 flow [2024-06-27 18:40:05,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 215 transitions, 2695 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:05,422 INFO L231 Difference]: Finished difference. Result has 145 places, 183 transitions, 2235 flow [2024-06-27 18:40:05,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2011, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2235, PETRI_PLACES=145, PETRI_TRANSITIONS=183} [2024-06-27 18:40:05,422 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:40:05,423 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 183 transitions, 2235 flow [2024-06-27 18:40:05,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:05,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:05,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:05,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:40:05,423 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:05,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:05,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1950613372, now seen corresponding path program 2 times [2024-06-27 18:40:05,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:05,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774286893] [2024-06-27 18:40:05,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:05,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:06,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:06,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774286893] [2024-06-27 18:40:06,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774286893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:06,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:06,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:06,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592535189] [2024-06-27 18:40:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:06,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:06,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:06,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:06,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:06,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 183 transitions, 2235 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:06,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:06,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:06,517 INFO L124 PetriNetUnfolderBase]: 902/1649 cut-off events. [2024-06-27 18:40:06,517 INFO L125 PetriNetUnfolderBase]: For 16851/16851 co-relation queries the response was YES. [2024-06-27 18:40:06,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 1649 events. 902/1649 cut-off events. For 16851/16851 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9127 event pairs, 150 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 8897. Up to 1289 conditions per place. [2024-06-27 18:40:06,530 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 184 selfloop transitions, 38 changer transitions 0/228 dead transitions. [2024-06-27 18:40:06,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 228 transitions, 2916 flow [2024-06-27 18:40:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:40:06,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:40:06,533 INFO L175 Difference]: Start difference. First operand has 145 places, 183 transitions, 2235 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:40:06,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 228 transitions, 2916 flow [2024-06-27 18:40:06,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 228 transitions, 2793 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:06,591 INFO L231 Difference]: Finished difference. Result has 151 places, 186 transitions, 2263 flow [2024-06-27 18:40:06,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2263, PETRI_PLACES=151, PETRI_TRANSITIONS=186} [2024-06-27 18:40:06,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-27 18:40:06,592 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 186 transitions, 2263 flow [2024-06-27 18:40:06,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:06,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:06,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:40:06,593 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:06,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:06,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1947812088, now seen corresponding path program 1 times [2024-06-27 18:40:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178544543] [2024-06-27 18:40:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:06,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:07,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:07,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178544543] [2024-06-27 18:40:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178544543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:07,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:07,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:07,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111564311] [2024-06-27 18:40:07,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:07,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:07,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:07,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:07,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 186 transitions, 2263 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:07,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:07,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:07,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:07,730 INFO L124 PetriNetUnfolderBase]: 900/1649 cut-off events. [2024-06-27 18:40:07,730 INFO L125 PetriNetUnfolderBase]: For 16454/16454 co-relation queries the response was YES. [2024-06-27 18:40:07,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8876 conditions, 1649 events. 900/1649 cut-off events. For 16454/16454 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9135 event pairs, 162 based on Foata normal form. 1/1588 useless extension candidates. Maximal degree in co-relation 8802. Up to 1197 conditions per place. [2024-06-27 18:40:07,743 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 143 selfloop transitions, 64 changer transitions 0/213 dead transitions. [2024-06-27 18:40:07,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 213 transitions, 2790 flow [2024-06-27 18:40:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:40:07,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:40:07,745 INFO L175 Difference]: Start difference. First operand has 151 places, 186 transitions, 2263 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:40:07,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 213 transitions, 2790 flow [2024-06-27 18:40:07,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 213 transitions, 2677 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:07,803 INFO L231 Difference]: Finished difference. Result has 152 places, 188 transitions, 2311 flow [2024-06-27 18:40:07,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2311, PETRI_PLACES=152, PETRI_TRANSITIONS=188} [2024-06-27 18:40:07,803 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:40:07,803 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 188 transitions, 2311 flow [2024-06-27 18:40:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:07,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:07,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:07,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:40:07,804 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:07,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1832347752, now seen corresponding path program 1 times [2024-06-27 18:40:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:07,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610109223] [2024-06-27 18:40:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:08,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:08,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610109223] [2024-06-27 18:40:08,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610109223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:08,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:08,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:08,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155876991] [2024-06-27 18:40:08,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:08,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:08,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:08,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:08,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 188 transitions, 2311 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:08,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:08,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:08,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:09,028 INFO L124 PetriNetUnfolderBase]: 967/1762 cut-off events. [2024-06-27 18:40:09,028 INFO L125 PetriNetUnfolderBase]: For 18573/18573 co-relation queries the response was YES. [2024-06-27 18:40:09,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 1762 events. 967/1762 cut-off events. For 18573/18573 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9844 event pairs, 152 based on Foata normal form. 1/1698 useless extension candidates. Maximal degree in co-relation 9467. Up to 902 conditions per place. [2024-06-27 18:40:09,059 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 163 selfloop transitions, 72 changer transitions 0/241 dead transitions. [2024-06-27 18:40:09,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 241 transitions, 3277 flow [2024-06-27 18:40:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 18:40:09,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-27 18:40:09,061 INFO L175 Difference]: Start difference. First operand has 152 places, 188 transitions, 2311 flow. Second operand 8 states and 151 transitions. [2024-06-27 18:40:09,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 241 transitions, 3277 flow [2024-06-27 18:40:09,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 241 transitions, 3141 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:09,126 INFO L231 Difference]: Finished difference. Result has 156 places, 200 transitions, 2527 flow [2024-06-27 18:40:09,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2527, PETRI_PLACES=156, PETRI_TRANSITIONS=200} [2024-06-27 18:40:09,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 18:40:09,127 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 200 transitions, 2527 flow [2024-06-27 18:40:09,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:09,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:09,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:09,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:40:09,128 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:09,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1832340994, now seen corresponding path program 1 times [2024-06-27 18:40:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101623506] [2024-06-27 18:40:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:09,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:10,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101623506] [2024-06-27 18:40:10,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101623506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:10,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:10,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:10,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47868554] [2024-06-27 18:40:10,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:10,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:10,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:10,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:10,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 200 transitions, 2527 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 18:40:10,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:10,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:10,739 INFO L124 PetriNetUnfolderBase]: 1019/1842 cut-off events. [2024-06-27 18:40:10,740 INFO L125 PetriNetUnfolderBase]: For 21798/21798 co-relation queries the response was YES. [2024-06-27 18:40:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10261 conditions, 1842 events. 1019/1842 cut-off events. For 21798/21798 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10326 event pairs, 156 based on Foata normal form. 4/1781 useless extension candidates. Maximal degree in co-relation 10183. Up to 972 conditions per place. [2024-06-27 18:40:10,755 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 187 selfloop transitions, 59 changer transitions 0/252 dead transitions. [2024-06-27 18:40:10,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 252 transitions, 3334 flow [2024-06-27 18:40:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 18:40:10,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-27 18:40:10,757 INFO L175 Difference]: Start difference. First operand has 156 places, 200 transitions, 2527 flow. Second operand 9 states and 169 transitions. [2024-06-27 18:40:10,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 252 transitions, 3334 flow [2024-06-27 18:40:10,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 252 transitions, 3285 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:10,869 INFO L231 Difference]: Finished difference. Result has 163 places, 205 transitions, 2638 flow [2024-06-27 18:40:10,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2638, PETRI_PLACES=163, PETRI_TRANSITIONS=205} [2024-06-27 18:40:10,870 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 18:40:10,870 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 205 transitions, 2638 flow [2024-06-27 18:40:10,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:10,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:10,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:10,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:40:10,871 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:10,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:10,871 INFO L85 PathProgramCache]: Analyzing trace with hash 519048390, now seen corresponding path program 2 times [2024-06-27 18:40:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:10,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183701774] [2024-06-27 18:40:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:11,433 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 18:40:11,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:11,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183701774] [2024-06-27 18:40:11,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183701774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:11,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:11,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965208731] [2024-06-27 18:40:11,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:11,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:11,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:11,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 205 transitions, 2638 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:11,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:11,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:11,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,933 INFO L124 PetriNetUnfolderBase]: 1054/1879 cut-off events. [2024-06-27 18:40:11,933 INFO L125 PetriNetUnfolderBase]: For 22870/22870 co-relation queries the response was YES. [2024-06-27 18:40:11,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10947 conditions, 1879 events. 1054/1879 cut-off events. For 22870/22870 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10505 event pairs, 146 based on Foata normal form. 2/1822 useless extension candidates. Maximal degree in co-relation 10867. Up to 1017 conditions per place. [2024-06-27 18:40:11,947 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 164 selfloop transitions, 86 changer transitions 0/256 dead transitions. [2024-06-27 18:40:11,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 256 transitions, 3585 flow [2024-06-27 18:40:11,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:11,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 18:40:11,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236486486486487 [2024-06-27 18:40:11,949 INFO L175 Difference]: Start difference. First operand has 163 places, 205 transitions, 2638 flow. Second operand 8 states and 155 transitions. [2024-06-27 18:40:11,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 256 transitions, 3585 flow [2024-06-27 18:40:12,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 256 transitions, 3523 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:12,032 INFO L231 Difference]: Finished difference. Result has 168 places, 215 transitions, 2970 flow [2024-06-27 18:40:12,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2970, PETRI_PLACES=168, PETRI_TRANSITIONS=215} [2024-06-27 18:40:12,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 18:40:12,033 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 215 transitions, 2970 flow [2024-06-27 18:40:12,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:12,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:12,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:40:12,034 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:12,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1832341242, now seen corresponding path program 3 times [2024-06-27 18:40:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567460222] [2024-06-27 18:40:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:12,621 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 18:40:12,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:12,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567460222] [2024-06-27 18:40:12,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567460222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:12,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:12,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:12,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863802963] [2024-06-27 18:40:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:12,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:12,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 215 transitions, 2970 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:12,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:12,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:13,205 INFO L124 PetriNetUnfolderBase]: 1052/1924 cut-off events. [2024-06-27 18:40:13,205 INFO L125 PetriNetUnfolderBase]: For 24624/24624 co-relation queries the response was YES. [2024-06-27 18:40:13,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11453 conditions, 1924 events. 1052/1924 cut-off events. For 24624/24624 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10997 event pairs, 151 based on Foata normal form. 1/1850 useless extension candidates. Maximal degree in co-relation 11369. Up to 1250 conditions per place. [2024-06-27 18:40:13,220 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 182 selfloop transitions, 66 changer transitions 0/254 dead transitions. [2024-06-27 18:40:13,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 254 transitions, 3758 flow [2024-06-27 18:40:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:40:13,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:40:13,222 INFO L175 Difference]: Start difference. First operand has 168 places, 215 transitions, 2970 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:40:13,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 254 transitions, 3758 flow [2024-06-27 18:40:13,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 254 transitions, 3651 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:13,325 INFO L231 Difference]: Finished difference. Result has 175 places, 218 transitions, 3136 flow [2024-06-27 18:40:13,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3136, PETRI_PLACES=175, PETRI_TRANSITIONS=218} [2024-06-27 18:40:13,325 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 18:40:13,326 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 218 transitions, 3136 flow [2024-06-27 18:40:13,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:13,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:13,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:13,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:40:13,326 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:13,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash 87137372, now seen corresponding path program 2 times [2024-06-27 18:40:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:13,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516086262] [2024-06-27 18:40:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:13,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:14,045 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 18:40:14,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516086262] [2024-06-27 18:40:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516086262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348357171] [2024-06-27 18:40:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:14,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:14,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:14,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 218 transitions, 3136 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 18:40:14,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:14,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:14,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:14,743 INFO L124 PetriNetUnfolderBase]: 1078/1969 cut-off events. [2024-06-27 18:40:14,743 INFO L125 PetriNetUnfolderBase]: For 27233/27233 co-relation queries the response was YES. [2024-06-27 18:40:14,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11833 conditions, 1969 events. 1078/1969 cut-off events. For 27233/27233 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11314 event pairs, 213 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 11746. Up to 1480 conditions per place. [2024-06-27 18:40:14,759 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 216 selfloop transitions, 41 changer transitions 0/263 dead transitions. [2024-06-27 18:40:14,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 263 transitions, 3920 flow [2024-06-27 18:40:14,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:14,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:14,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:40:14,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:40:14,761 INFO L175 Difference]: Start difference. First operand has 175 places, 218 transitions, 3136 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:40:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 263 transitions, 3920 flow [2024-06-27 18:40:14,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 263 transitions, 3868 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:14,854 INFO L231 Difference]: Finished difference. Result has 181 places, 222 transitions, 3203 flow [2024-06-27 18:40:14,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3084, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3203, PETRI_PLACES=181, PETRI_TRANSITIONS=222} [2024-06-27 18:40:14,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-27 18:40:14,855 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 222 transitions, 3203 flow [2024-06-27 18:40:14,855 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 18:40:14,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:14,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:40:14,856 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:14,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:14,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1428686210, now seen corresponding path program 3 times [2024-06-27 18:40:14,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:14,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983921459] [2024-06-27 18:40:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:14,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983921459] [2024-06-27 18:40:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983921459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486257987] [2024-06-27 18:40:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:15,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:15,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 222 transitions, 3203 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 18:40:15,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:15,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:16,190 INFO L124 PetriNetUnfolderBase]: 1144/2086 cut-off events. [2024-06-27 18:40:16,191 INFO L125 PetriNetUnfolderBase]: For 30014/30014 co-relation queries the response was YES. [2024-06-27 18:40:16,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12428 conditions, 2086 events. 1144/2086 cut-off events. For 30014/30014 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12083 event pairs, 212 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 12340. Up to 1675 conditions per place. [2024-06-27 18:40:16,207 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 223 selfloop transitions, 38 changer transitions 0/267 dead transitions. [2024-06-27 18:40:16,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 267 transitions, 3981 flow [2024-06-27 18:40:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:40:16,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:40:16,209 INFO L175 Difference]: Start difference. First operand has 181 places, 222 transitions, 3203 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:40:16,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 267 transitions, 3981 flow [2024-06-27 18:40:16,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 267 transitions, 3936 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:16,306 INFO L231 Difference]: Finished difference. Result has 186 places, 230 transitions, 3330 flow [2024-06-27 18:40:16,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3160, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3330, PETRI_PLACES=186, PETRI_TRANSITIONS=230} [2024-06-27 18:40:16,306 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 18:40:16,306 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 230 transitions, 3330 flow [2024-06-27 18:40:16,307 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 18:40:16,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:16,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:16,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:40:16,307 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:16,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1428360710, now seen corresponding path program 4 times [2024-06-27 18:40:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601847299] [2024-06-27 18:40:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:17,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:17,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601847299] [2024-06-27 18:40:17,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601847299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:17,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:17,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469879650] [2024-06-27 18:40:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:17,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:17,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:17,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:17,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:17,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 230 transitions, 3330 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 18:40:17,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:17,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:17,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:17,775 INFO L124 PetriNetUnfolderBase]: 1158/2131 cut-off events. [2024-06-27 18:40:17,776 INFO L125 PetriNetUnfolderBase]: For 31062/31062 co-relation queries the response was YES. [2024-06-27 18:40:17,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12877 conditions, 2131 events. 1158/2131 cut-off events. For 31062/31062 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12584 event pairs, 230 based on Foata normal form. 2/2044 useless extension candidates. Maximal degree in co-relation 12786. Up to 1723 conditions per place. [2024-06-27 18:40:17,795 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 225 selfloop transitions, 40 changer transitions 0/271 dead transitions. [2024-06-27 18:40:17,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 271 transitions, 4066 flow [2024-06-27 18:40:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:40:17,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:40:17,797 INFO L175 Difference]: Start difference. First operand has 186 places, 230 transitions, 3330 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:40:17,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 271 transitions, 4066 flow [2024-06-27 18:40:17,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 271 transitions, 4018 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:17,911 INFO L231 Difference]: Finished difference. Result has 194 places, 238 transitions, 3500 flow [2024-06-27 18:40:17,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3500, PETRI_PLACES=194, PETRI_TRANSITIONS=238} [2024-06-27 18:40:17,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-27 18:40:17,912 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 238 transitions, 3500 flow [2024-06-27 18:40:17,912 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 18:40:17,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:17,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:40:17,912 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:17,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1437860908, now seen corresponding path program 4 times [2024-06-27 18:40:17,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83433811] [2024-06-27 18:40:17,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:18,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:18,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83433811] [2024-06-27 18:40:18,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83433811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:18,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:18,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662392375] [2024-06-27 18:40:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:18,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:18,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:18,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:18,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:18,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 238 transitions, 3500 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:18,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:18,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:18,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:19,009 INFO L124 PetriNetUnfolderBase]: 1189/2174 cut-off events. [2024-06-27 18:40:19,009 INFO L125 PetriNetUnfolderBase]: For 33120/33120 co-relation queries the response was YES. [2024-06-27 18:40:19,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13415 conditions, 2174 events. 1189/2174 cut-off events. For 33120/33120 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12811 event pairs, 248 based on Foata normal form. 1/2088 useless extension candidates. Maximal degree in co-relation 13320. Up to 1788 conditions per place. [2024-06-27 18:40:19,029 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 37 changer transitions 0/274 dead transitions. [2024-06-27 18:40:19,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 274 transitions, 4322 flow [2024-06-27 18:40:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:40:19,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 18:40:19,031 INFO L175 Difference]: Start difference. First operand has 194 places, 238 transitions, 3500 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:40:19,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 274 transitions, 4322 flow [2024-06-27 18:40:19,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 274 transitions, 4274 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:19,151 INFO L231 Difference]: Finished difference. Result has 200 places, 243 transitions, 3626 flow [2024-06-27 18:40:19,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3626, PETRI_PLACES=200, PETRI_TRANSITIONS=243} [2024-06-27 18:40:19,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-27 18:40:19,152 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 243 transitions, 3626 flow [2024-06-27 18:40:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:19,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:19,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:40:19,152 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:19,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash -221269546, now seen corresponding path program 5 times [2024-06-27 18:40:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256099257] [2024-06-27 18:40:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:19,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:19,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256099257] [2024-06-27 18:40:19,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256099257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:19,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:19,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:19,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428497364] [2024-06-27 18:40:19,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:19,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:19,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:19,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:19,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:19,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 243 transitions, 3626 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:19,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:19,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:19,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:20,326 INFO L124 PetriNetUnfolderBase]: 1187/2171 cut-off events. [2024-06-27 18:40:20,327 INFO L125 PetriNetUnfolderBase]: For 34498/34498 co-relation queries the response was YES. [2024-06-27 18:40:20,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13493 conditions, 2171 events. 1187/2171 cut-off events. For 34498/34498 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12785 event pairs, 248 based on Foata normal form. 1/2085 useless extension candidates. Maximal degree in co-relation 13396. Up to 1786 conditions per place. [2024-06-27 18:40:20,347 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 38 changer transitions 0/273 dead transitions. [2024-06-27 18:40:20,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 273 transitions, 4302 flow [2024-06-27 18:40:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:40:20,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:40:20,348 INFO L175 Difference]: Start difference. First operand has 200 places, 243 transitions, 3626 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:40:20,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 273 transitions, 4302 flow [2024-06-27 18:40:20,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 273 transitions, 4234 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:20,486 INFO L231 Difference]: Finished difference. Result has 204 places, 244 transitions, 3655 flow [2024-06-27 18:40:20,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3655, PETRI_PLACES=204, PETRI_TRANSITIONS=244} [2024-06-27 18:40:20,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:40:20,487 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 244 transitions, 3655 flow [2024-06-27 18:40:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:20,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:20,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:20,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:40:20,487 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:20,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:20,488 INFO L85 PathProgramCache]: Analyzing trace with hash -221269298, now seen corresponding path program 5 times [2024-06-27 18:40:20,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:20,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824489368] [2024-06-27 18:40:20,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:20,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:21,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:21,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824489368] [2024-06-27 18:40:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824489368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:21,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:21,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102996020] [2024-06-27 18:40:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:21,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:21,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:21,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:21,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:21,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 244 transitions, 3655 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 18:40:21,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:21,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:21,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:21,964 INFO L124 PetriNetUnfolderBase]: 1193/2201 cut-off events. [2024-06-27 18:40:21,965 INFO L125 PetriNetUnfolderBase]: For 34632/34632 co-relation queries the response was YES. [2024-06-27 18:40:21,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13610 conditions, 2201 events. 1193/2201 cut-off events. For 34632/34632 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13141 event pairs, 230 based on Foata normal form. 2/2109 useless extension candidates. Maximal degree in co-relation 13511. Up to 1767 conditions per place. [2024-06-27 18:40:21,982 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 235 selfloop transitions, 40 changer transitions 0/281 dead transitions. [2024-06-27 18:40:21,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 281 transitions, 4369 flow [2024-06-27 18:40:21,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:40:21,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:40:21,983 INFO L175 Difference]: Start difference. First operand has 204 places, 244 transitions, 3655 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:40:21,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 281 transitions, 4369 flow [2024-06-27 18:40:22,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 281 transitions, 4290 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:22,115 INFO L231 Difference]: Finished difference. Result has 208 places, 246 transitions, 3691 flow [2024-06-27 18:40:22,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3582, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3691, PETRI_PLACES=208, PETRI_TRANSITIONS=246} [2024-06-27 18:40:22,116 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-27 18:40:22,116 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 246 transitions, 3691 flow [2024-06-27 18:40:22,116 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 18:40:22,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:22,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:22,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:40:22,117 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:22,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:22,117 INFO L85 PathProgramCache]: Analyzing trace with hash 407213922, now seen corresponding path program 6 times [2024-06-27 18:40:22,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:22,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560587753] [2024-06-27 18:40:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:22,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:22,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:22,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560587753] [2024-06-27 18:40:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560587753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:22,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:22,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:22,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665461224] [2024-06-27 18:40:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:22,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:22,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 246 transitions, 3691 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:22,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:22,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:22,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:23,337 INFO L124 PetriNetUnfolderBase]: 1196/2186 cut-off events. [2024-06-27 18:40:23,337 INFO L125 PetriNetUnfolderBase]: For 34947/34947 co-relation queries the response was YES. [2024-06-27 18:40:23,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13643 conditions, 2186 events. 1196/2186 cut-off events. For 34947/34947 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12884 event pairs, 252 based on Foata normal form. 1/2100 useless extension candidates. Maximal degree in co-relation 13543. Up to 1840 conditions per place. [2024-06-27 18:40:23,357 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 32 changer transitions 0/276 dead transitions. [2024-06-27 18:40:23,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 276 transitions, 4378 flow [2024-06-27 18:40:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:40:23,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:40:23,359 INFO L175 Difference]: Start difference. First operand has 208 places, 246 transitions, 3691 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:40:23,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 276 transitions, 4378 flow [2024-06-27 18:40:23,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 276 transitions, 4275 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:23,504 INFO L231 Difference]: Finished difference. Result has 209 places, 248 transitions, 3694 flow [2024-06-27 18:40:23,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3694, PETRI_PLACES=209, PETRI_TRANSITIONS=248} [2024-06-27 18:40:23,505 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-27 18:40:23,505 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 248 transitions, 3694 flow [2024-06-27 18:40:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:23,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:23,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:23,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:40:23,506 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:23,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:23,506 INFO L85 PathProgramCache]: Analyzing trace with hash 352249465, now seen corresponding path program 1 times [2024-06-27 18:40:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:23,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423604661] [2024-06-27 18:40:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:23,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423604661] [2024-06-27 18:40:24,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423604661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:24,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:24,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:40:24,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546239052] [2024-06-27 18:40:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:40:24,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:40:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:40:24,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:24,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 248 transitions, 3694 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 18:40:24,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:24,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:24,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:25,408 INFO L124 PetriNetUnfolderBase]: 1197/2215 cut-off events. [2024-06-27 18:40:25,408 INFO L125 PetriNetUnfolderBase]: For 34736/34736 co-relation queries the response was YES. [2024-06-27 18:40:25,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13546 conditions, 2215 events. 1197/2215 cut-off events. For 34736/34736 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13271 event pairs, 236 based on Foata normal form. 2/2121 useless extension candidates. Maximal degree in co-relation 13445. Up to 1798 conditions per place. [2024-06-27 18:40:25,429 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 238 selfloop transitions, 38 changer transitions 0/282 dead transitions. [2024-06-27 18:40:25,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 282 transitions, 4372 flow [2024-06-27 18:40:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:40:25,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:40:25,431 INFO L175 Difference]: Start difference. First operand has 209 places, 248 transitions, 3694 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:40:25,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 282 transitions, 4372 flow [2024-06-27 18:40:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 282 transitions, 4303 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:25,553 INFO L231 Difference]: Finished difference. Result has 212 places, 250 transitions, 3738 flow [2024-06-27 18:40:25,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3625, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3738, PETRI_PLACES=212, PETRI_TRANSITIONS=250} [2024-06-27 18:40:25,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 18:40:25,554 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 250 transitions, 3738 flow [2024-06-27 18:40:25,554 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 18:40:25,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:25,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:40:25,555 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:25,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1531717441, now seen corresponding path program 1 times [2024-06-27 18:40:25,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001052345] [2024-06-27 18:40:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:25,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:25,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001052345] [2024-06-27 18:40:25,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001052345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:25,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:25,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:40:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812932386] [2024-06-27 18:40:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:25,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:40:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:40:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:40:25,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-27 18:40:25,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 250 transitions, 3738 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 18:40:25,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:25,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-27 18:40:25,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:25,843 INFO L124 PetriNetUnfolderBase]: 498/993 cut-off events. [2024-06-27 18:40:25,843 INFO L125 PetriNetUnfolderBase]: For 17143/17184 co-relation queries the response was YES. [2024-06-27 18:40:25,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5631 conditions, 993 events. 498/993 cut-off events. For 17143/17184 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5374 event pairs, 112 based on Foata normal form. 99/1023 useless extension candidates. Maximal degree in co-relation 5530. Up to 299 conditions per place. [2024-06-27 18:40:25,854 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 89 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-27 18:40:25,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 150 transitions, 2170 flow [2024-06-27 18:40:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:40:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:40:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-27 18:40:25,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.668918918918919 [2024-06-27 18:40:25,856 INFO L175 Difference]: Start difference. First operand has 212 places, 250 transitions, 3738 flow. Second operand 4 states and 99 transitions. [2024-06-27 18:40:25,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 150 transitions, 2170 flow [2024-06-27 18:40:25,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 150 transitions, 1622 flow, removed 43 selfloop flow, removed 70 redundant places. [2024-06-27 18:40:25,910 INFO L231 Difference]: Finished difference. Result has 147 places, 134 transitions, 1408 flow [2024-06-27 18:40:25,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1408, PETRI_PLACES=147, PETRI_TRANSITIONS=134} [2024-06-27 18:40:25,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-27 18:40:25,911 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 134 transitions, 1408 flow [2024-06-27 18:40:25,911 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 18:40:25,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:25,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:40:25,911 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:25,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1565097879, now seen corresponding path program 1 times [2024-06-27 18:40:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825096819] [2024-06-27 18:40:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:26,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825096819] [2024-06-27 18:40:26,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825096819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98561663] [2024-06-27 18:40:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:26,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:26,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:26,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:26,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 134 transitions, 1408 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:26,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:26,837 INFO L124 PetriNetUnfolderBase]: 882/1611 cut-off events. [2024-06-27 18:40:26,837 INFO L125 PetriNetUnfolderBase]: For 28129/28129 co-relation queries the response was YES. [2024-06-27 18:40:26,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8647 conditions, 1611 events. 882/1611 cut-off events. For 28129/28129 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8546 event pairs, 190 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 8576. Up to 1056 conditions per place. [2024-06-27 18:40:26,848 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 155 selfloop transitions, 52 changer transitions 0/214 dead transitions. [2024-06-27 18:40:26,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 214 transitions, 2581 flow [2024-06-27 18:40:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:26,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:40:26,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 18:40:26,849 INFO L175 Difference]: Start difference. First operand has 147 places, 134 transitions, 1408 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:40:26,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 214 transitions, 2581 flow [2024-06-27 18:40:26,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 214 transitions, 2567 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:26,914 INFO L231 Difference]: Finished difference. Result has 157 places, 164 transitions, 1888 flow [2024-06-27 18:40:26,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1888, PETRI_PLACES=157, PETRI_TRANSITIONS=164} [2024-06-27 18:40:26,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 18:40:26,914 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 164 transitions, 1888 flow [2024-06-27 18:40:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:26,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:40:26,915 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:26,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:26,915 INFO L85 PathProgramCache]: Analyzing trace with hash -341344663, now seen corresponding path program 2 times [2024-06-27 18:40:26,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:26,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141244420] [2024-06-27 18:40:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:26,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:27,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:27,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141244420] [2024-06-27 18:40:27,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141244420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:27,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:27,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:27,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965346380] [2024-06-27 18:40:27,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:27,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:27,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:27,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:27,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 164 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:27,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:27,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:27,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:27,772 INFO L124 PetriNetUnfolderBase]: 898/1626 cut-off events. [2024-06-27 18:40:27,772 INFO L125 PetriNetUnfolderBase]: For 30462/30462 co-relation queries the response was YES. [2024-06-27 18:40:27,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9422 conditions, 1626 events. 898/1626 cut-off events. For 30462/30462 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8538 event pairs, 126 based on Foata normal form. 2/1563 useless extension candidates. Maximal degree in co-relation 9345. Up to 878 conditions per place. [2024-06-27 18:40:27,783 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 124 selfloop transitions, 62 changer transitions 0/193 dead transitions. [2024-06-27 18:40:27,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 193 transitions, 2480 flow [2024-06-27 18:40:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:40:27,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:40:27,784 INFO L175 Difference]: Start difference. First operand has 157 places, 164 transitions, 1888 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:40:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 193 transitions, 2480 flow [2024-06-27 18:40:27,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 193 transitions, 2439 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:27,872 INFO L231 Difference]: Finished difference. Result has 163 places, 168 transitions, 2043 flow [2024-06-27 18:40:27,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2043, PETRI_PLACES=163, PETRI_TRANSITIONS=168} [2024-06-27 18:40:27,872 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-27 18:40:27,873 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 168 transitions, 2043 flow [2024-06-27 18:40:27,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:27,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:27,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:27,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:40:27,873 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:27,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash -339470713, now seen corresponding path program 3 times [2024-06-27 18:40:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738786067] [2024-06-27 18:40:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:28,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738786067] [2024-06-27 18:40:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738786067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625729227] [2024-06-27 18:40:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:28,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:28,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:28,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:28,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 168 transitions, 2043 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:28,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:28,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,784 INFO L124 PetriNetUnfolderBase]: 968/1750 cut-off events. [2024-06-27 18:40:28,784 INFO L125 PetriNetUnfolderBase]: For 37898/37898 co-relation queries the response was YES. [2024-06-27 18:40:28,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10506 conditions, 1750 events. 968/1750 cut-off events. For 37898/37898 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9389 event pairs, 237 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 10427. Up to 1232 conditions per place. [2024-06-27 18:40:28,797 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 134 selfloop transitions, 58 changer transitions 0/199 dead transitions. [2024-06-27 18:40:28,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 199 transitions, 2698 flow [2024-06-27 18:40:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:28,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:40:28,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-27 18:40:28,798 INFO L175 Difference]: Start difference. First operand has 163 places, 168 transitions, 2043 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:40:28,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 199 transitions, 2698 flow [2024-06-27 18:40:28,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 199 transitions, 2579 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:28,918 INFO L231 Difference]: Finished difference. Result has 166 places, 176 transitions, 2173 flow [2024-06-27 18:40:28,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2173, PETRI_PLACES=166, PETRI_TRANSITIONS=176} [2024-06-27 18:40:28,919 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 18:40:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 176 transitions, 2173 flow [2024-06-27 18:40:28,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:28,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:40:28,920 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:28,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash 862033972, now seen corresponding path program 1 times [2024-06-27 18:40:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324480704] [2024-06-27 18:40:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:28,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:29,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324480704] [2024-06-27 18:40:29,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324480704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:29,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:29,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868445866] [2024-06-27 18:40:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:29,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:29,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 176 transitions, 2173 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:29,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:29,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:29,947 INFO L124 PetriNetUnfolderBase]: 966/1747 cut-off events. [2024-06-27 18:40:29,947 INFO L125 PetriNetUnfolderBase]: For 34194/34194 co-relation queries the response was YES. [2024-06-27 18:40:29,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10471 conditions, 1747 events. 966/1747 cut-off events. For 34194/34194 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9397 event pairs, 258 based on Foata normal form. 1/1683 useless extension candidates. Maximal degree in co-relation 10391. Up to 1268 conditions per place. [2024-06-27 18:40:29,961 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 137 selfloop transitions, 51 changer transitions 0/195 dead transitions. [2024-06-27 18:40:29,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 195 transitions, 2765 flow [2024-06-27 18:40:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:29,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:40:29,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:40:29,963 INFO L175 Difference]: Start difference. First operand has 166 places, 176 transitions, 2173 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:40:29,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 195 transitions, 2765 flow [2024-06-27 18:40:30,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 195 transitions, 2689 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:30,066 INFO L231 Difference]: Finished difference. Result has 170 places, 176 transitions, 2210 flow [2024-06-27 18:40:30,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2210, PETRI_PLACES=170, PETRI_TRANSITIONS=176} [2024-06-27 18:40:30,067 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-27 18:40:30,067 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 176 transitions, 2210 flow [2024-06-27 18:40:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:30,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:30,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:40:30,068 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:30,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash -339466993, now seen corresponding path program 4 times [2024-06-27 18:40:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:30,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168908588] [2024-06-27 18:40:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:30,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:30,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168908588] [2024-06-27 18:40:30,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168908588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:30,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:30,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258655481] [2024-06-27 18:40:30,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:30,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:30,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 176 transitions, 2210 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:30,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:30,964 INFO L124 PetriNetUnfolderBase]: 960/1737 cut-off events. [2024-06-27 18:40:30,964 INFO L125 PetriNetUnfolderBase]: For 34533/34533 co-relation queries the response was YES. [2024-06-27 18:40:30,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 1737 events. 960/1737 cut-off events. For 34533/34533 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9305 event pairs, 257 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 10354. Up to 1355 conditions per place. [2024-06-27 18:40:30,978 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 50 changer transitions 0/196 dead transitions. [2024-06-27 18:40:30,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 2656 flow [2024-06-27 18:40:30,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:30,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 18:40:30,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-27 18:40:30,980 INFO L175 Difference]: Start difference. First operand has 170 places, 176 transitions, 2210 flow. Second operand 8 states and 130 transitions. [2024-06-27 18:40:30,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 2656 flow [2024-06-27 18:40:31,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 196 transitions, 2514 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:31,084 INFO L231 Difference]: Finished difference. Result has 170 places, 176 transitions, 2176 flow [2024-06-27 18:40:31,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2176, PETRI_PLACES=170, PETRI_TRANSITIONS=176} [2024-06-27 18:40:31,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-27 18:40:31,085 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 176 transitions, 2176 flow [2024-06-27 18:40:31,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:31,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:31,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:31,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:40:31,089 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:31,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:31,089 INFO L85 PathProgramCache]: Analyzing trace with hash -252625298, now seen corresponding path program 2 times [2024-06-27 18:40:31,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:31,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871579241] [2024-06-27 18:40:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:31,813 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 18:40:31,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:31,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871579241] [2024-06-27 18:40:31,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871579241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:31,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:31,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938564023] [2024-06-27 18:40:31,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:31,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:31,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:31,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:31,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:31,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 176 transitions, 2176 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 18:40:31,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:31,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:31,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:32,390 INFO L124 PetriNetUnfolderBase]: 966/1746 cut-off events. [2024-06-27 18:40:32,390 INFO L125 PetriNetUnfolderBase]: For 31980/31980 co-relation queries the response was YES. [2024-06-27 18:40:32,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1746 events. 966/1746 cut-off events. For 31980/31980 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9351 event pairs, 256 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 10405. Up to 1265 conditions per place. [2024-06-27 18:40:32,405 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 53 changer transitions 0/199 dead transitions. [2024-06-27 18:40:32,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 199 transitions, 2812 flow [2024-06-27 18:40:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:32,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:40:32,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-27 18:40:32,408 INFO L175 Difference]: Start difference. First operand has 170 places, 176 transitions, 2176 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:40:32,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 199 transitions, 2812 flow [2024-06-27 18:40:32,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 199 transitions, 2698 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:32,511 INFO L231 Difference]: Finished difference. Result has 173 places, 178 transitions, 2199 flow [2024-06-27 18:40:32,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2199, PETRI_PLACES=173, PETRI_TRANSITIONS=178} [2024-06-27 18:40:32,512 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 18:40:32,513 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 178 transitions, 2199 flow [2024-06-27 18:40:32,513 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 18:40:32,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:32,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:32,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:40:32,513 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:32,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash -252631033, now seen corresponding path program 5 times [2024-06-27 18:40:32,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:32,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428813884] [2024-06-27 18:40:32,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:32,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:33,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:33,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428813884] [2024-06-27 18:40:33,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428813884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:33,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:33,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069717687] [2024-06-27 18:40:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:33,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:33,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:33,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:33,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 178 transitions, 2199 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 18:40:33,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:33,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:33,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:33,578 INFO L124 PetriNetUnfolderBase]: 960/1736 cut-off events. [2024-06-27 18:40:33,579 INFO L125 PetriNetUnfolderBase]: For 32215/32215 co-relation queries the response was YES. [2024-06-27 18:40:33,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10274 conditions, 1736 events. 960/1736 cut-off events. For 32215/32215 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9302 event pairs, 252 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 10191. Up to 1318 conditions per place. [2024-06-27 18:40:33,593 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 140 selfloop transitions, 54 changer transitions 0/201 dead transitions. [2024-06-27 18:40:33,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 2666 flow [2024-06-27 18:40:33,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:33,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:40:33,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:40:33,594 INFO L175 Difference]: Start difference. First operand has 173 places, 178 transitions, 2199 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:40:33,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 2666 flow [2024-06-27 18:40:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 201 transitions, 2542 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:33,692 INFO L231 Difference]: Finished difference. Result has 175 places, 178 transitions, 2197 flow [2024-06-27 18:40:33,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2197, PETRI_PLACES=175, PETRI_TRANSITIONS=178} [2024-06-27 18:40:33,693 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 18:40:33,693 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 178 transitions, 2197 flow [2024-06-27 18:40:33,693 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 18:40:33,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:40:33,694 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:33,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -252630878, now seen corresponding path program 3 times [2024-06-27 18:40:33,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234864000] [2024-06-27 18:40:33,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:34,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:34,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234864000] [2024-06-27 18:40:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234864000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:34,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183937612] [2024-06-27 18:40:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:34,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:34,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 178 transitions, 2197 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:34,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:34,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:34,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:34,857 INFO L124 PetriNetUnfolderBase]: 970/1748 cut-off events. [2024-06-27 18:40:34,857 INFO L125 PetriNetUnfolderBase]: For 30042/30048 co-relation queries the response was YES. [2024-06-27 18:40:34,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 1748 events. 970/1748 cut-off events. For 30042/30048 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9353 event pairs, 247 based on Foata normal form. 7/1687 useless extension candidates. Maximal degree in co-relation 10363. Up to 1388 conditions per place. [2024-06-27 18:40:34,872 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 147 selfloop transitions, 46 changer transitions 0/200 dead transitions. [2024-06-27 18:40:34,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 200 transitions, 2712 flow [2024-06-27 18:40:34,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:34,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 18:40:34,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:40:34,874 INFO L175 Difference]: Start difference. First operand has 175 places, 178 transitions, 2197 flow. Second operand 8 states and 128 transitions. [2024-06-27 18:40:34,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 200 transitions, 2712 flow [2024-06-27 18:40:34,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 200 transitions, 2575 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:34,986 INFO L231 Difference]: Finished difference. Result has 175 places, 181 transitions, 2239 flow [2024-06-27 18:40:34,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2239, PETRI_PLACES=175, PETRI_TRANSITIONS=181} [2024-06-27 18:40:34,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 18:40:34,987 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 181 transitions, 2239 flow [2024-06-27 18:40:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:34,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:34,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:40:34,988 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:34,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:34,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1004133167, now seen corresponding path program 6 times [2024-06-27 18:40:34,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:34,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137046435] [2024-06-27 18:40:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137046435] [2024-06-27 18:40:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137046435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:35,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273825157] [2024-06-27 18:40:35,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:35,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:35,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:35,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:35,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 181 transitions, 2239 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:35,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:35,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:35,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:35,894 INFO L124 PetriNetUnfolderBase]: 1002/1805 cut-off events. [2024-06-27 18:40:35,894 INFO L125 PetriNetUnfolderBase]: For 32491/32493 co-relation queries the response was YES. [2024-06-27 18:40:35,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 1805 events. 1002/1805 cut-off events. For 32491/32493 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9785 event pairs, 120 based on Foata normal form. 6/1746 useless extension candidates. Maximal degree in co-relation 10579. Up to 1233 conditions per place. [2024-06-27 18:40:35,910 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 63 changer transitions 0/211 dead transitions. [2024-06-27 18:40:35,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 211 transitions, 2873 flow [2024-06-27 18:40:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:40:35,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-27 18:40:35,912 INFO L175 Difference]: Start difference. First operand has 175 places, 181 transitions, 2239 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:40:35,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 211 transitions, 2873 flow [2024-06-27 18:40:36,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 211 transitions, 2775 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:36,024 INFO L231 Difference]: Finished difference. Result has 177 places, 185 transitions, 2328 flow [2024-06-27 18:40:36,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2328, PETRI_PLACES=177, PETRI_TRANSITIONS=185} [2024-06-27 18:40:36,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-27 18:40:36,029 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 185 transitions, 2328 flow [2024-06-27 18:40:36,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:36,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:36,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:40:36,029 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:36,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -973716209, now seen corresponding path program 7 times [2024-06-27 18:40:36,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:36,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235593161] [2024-06-27 18:40:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:36,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:36,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235593161] [2024-06-27 18:40:36,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235593161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:36,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:36,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150337384] [2024-06-27 18:40:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:36,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:36,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 185 transitions, 2328 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:36,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:36,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:36,913 INFO L124 PetriNetUnfolderBase]: 996/1795 cut-off events. [2024-06-27 18:40:36,914 INFO L125 PetriNetUnfolderBase]: For 30740/30742 co-relation queries the response was YES. [2024-06-27 18:40:36,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10634 conditions, 1795 events. 996/1795 cut-off events. For 30740/30742 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9700 event pairs, 249 based on Foata normal form. 6/1732 useless extension candidates. Maximal degree in co-relation 10548. Up to 1405 conditions per place. [2024-06-27 18:40:36,929 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 146 selfloop transitions, 55 changer transitions 0/208 dead transitions. [2024-06-27 18:40:36,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 208 transitions, 2809 flow [2024-06-27 18:40:36,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:36,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:36,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:40:36,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:40:36,930 INFO L175 Difference]: Start difference. First operand has 177 places, 185 transitions, 2328 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:40:36,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 208 transitions, 2809 flow [2024-06-27 18:40:37,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 208 transitions, 2581 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:37,041 INFO L231 Difference]: Finished difference. Result has 178 places, 185 transitions, 2218 flow [2024-06-27 18:40:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2218, PETRI_PLACES=178, PETRI_TRANSITIONS=185} [2024-06-27 18:40:37,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:40:37,041 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 185 transitions, 2218 flow [2024-06-27 18:40:37,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:37,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:37,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:40:37,042 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:37,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1089373154, now seen corresponding path program 4 times [2024-06-27 18:40:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:37,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548152747] [2024-06-27 18:40:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:37,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:37,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548152747] [2024-06-27 18:40:37,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548152747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:37,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393036380] [2024-06-27 18:40:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:37,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:37,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:37,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 185 transitions, 2218 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:37,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:37,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:38,225 INFO L124 PetriNetUnfolderBase]: 1002/1803 cut-off events. [2024-06-27 18:40:38,225 INFO L125 PetriNetUnfolderBase]: For 28152/28154 co-relation queries the response was YES. [2024-06-27 18:40:38,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1803 events. 1002/1803 cut-off events. For 28152/28154 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9746 event pairs, 243 based on Foata normal form. 3/1733 useless extension candidates. Maximal degree in co-relation 10252. Up to 1399 conditions per place. [2024-06-27 18:40:38,240 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 152 selfloop transitions, 53 changer transitions 0/212 dead transitions. [2024-06-27 18:40:38,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 212 transitions, 2829 flow [2024-06-27 18:40:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:38,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:38,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:40:38,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:40:38,242 INFO L175 Difference]: Start difference. First operand has 178 places, 185 transitions, 2218 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:40:38,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 212 transitions, 2829 flow [2024-06-27 18:40:38,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 212 transitions, 2668 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:40:38,341 INFO L231 Difference]: Finished difference. Result has 178 places, 187 transitions, 2197 flow [2024-06-27 18:40:38,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2197, PETRI_PLACES=178, PETRI_TRANSITIONS=187} [2024-06-27 18:40:38,342 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 137 predicate places. [2024-06-27 18:40:38,342 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 187 transitions, 2197 flow [2024-06-27 18:40:38,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:38,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:38,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:40:38,342 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:38,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:38,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1084005194, now seen corresponding path program 5 times [2024-06-27 18:40:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:38,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375363533] [2024-06-27 18:40:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:38,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:39,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:39,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:39,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375363533] [2024-06-27 18:40:39,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375363533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:39,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:39,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741762252] [2024-06-27 18:40:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:39,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:39,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:39,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:39,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 187 transitions, 2197 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 18:40:39,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:39,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:39,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:39,519 INFO L124 PetriNetUnfolderBase]: 1008/1816 cut-off events. [2024-06-27 18:40:39,519 INFO L125 PetriNetUnfolderBase]: For 28395/28395 co-relation queries the response was YES. [2024-06-27 18:40:39,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 1816 events. 1008/1816 cut-off events. For 28395/28395 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9838 event pairs, 259 based on Foata normal form. 1/1744 useless extension candidates. Maximal degree in co-relation 10130. Up to 1321 conditions per place. [2024-06-27 18:40:39,533 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 138 selfloop transitions, 64 changer transitions 0/209 dead transitions. [2024-06-27 18:40:39,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 209 transitions, 2787 flow [2024-06-27 18:40:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:40:39,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:40:39,535 INFO L175 Difference]: Start difference. First operand has 178 places, 187 transitions, 2197 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:40:39,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 209 transitions, 2787 flow [2024-06-27 18:40:39,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 209 transitions, 2615 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:39,645 INFO L231 Difference]: Finished difference. Result has 180 places, 189 transitions, 2190 flow [2024-06-27 18:40:39,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2190, PETRI_PLACES=180, PETRI_TRANSITIONS=189} [2024-06-27 18:40:39,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-27 18:40:39,645 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 189 transitions, 2190 flow [2024-06-27 18:40:39,645 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 18:40:39,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:39,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:39,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:40:39,646 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:39,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1089367357, now seen corresponding path program 1 times [2024-06-27 18:40:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666990050] [2024-06-27 18:40:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666990050] [2024-06-27 18:40:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666990050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17741066] [2024-06-27 18:40:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:40,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:40,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:40,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:40,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 189 transitions, 2190 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 18:40:40,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:40,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:40,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:40,981 INFO L124 PetriNetUnfolderBase]: 1019/1829 cut-off events. [2024-06-27 18:40:40,981 INFO L125 PetriNetUnfolderBase]: For 29746/29748 co-relation queries the response was YES. [2024-06-27 18:40:40,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10291 conditions, 1829 events. 1019/1829 cut-off events. For 29746/29748 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9880 event pairs, 244 based on Foata normal form. 4/1758 useless extension candidates. Maximal degree in co-relation 10204. Up to 1364 conditions per place. [2024-06-27 18:40:40,999 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 162 selfloop transitions, 51 changer transitions 0/220 dead transitions. [2024-06-27 18:40:41,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 220 transitions, 2823 flow [2024-06-27 18:40:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:40:41,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:40:41,001 INFO L175 Difference]: Start difference. First operand has 180 places, 189 transitions, 2190 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:40:41,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 220 transitions, 2823 flow [2024-06-27 18:40:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 220 transitions, 2729 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:41,106 INFO L231 Difference]: Finished difference. Result has 183 places, 191 transitions, 2225 flow [2024-06-27 18:40:41,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2225, PETRI_PLACES=183, PETRI_TRANSITIONS=191} [2024-06-27 18:40:41,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 18:40:41,107 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 191 transitions, 2225 flow [2024-06-27 18:40:41,107 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 18:40:41,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:41,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:41,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:40:41,107 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:41,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash -968203727, now seen corresponding path program 2 times [2024-06-27 18:40:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:41,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27734383] [2024-06-27 18:40:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:41,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27734383] [2024-06-27 18:40:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27734383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:41,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:41,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:41,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742114280] [2024-06-27 18:40:41,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:41,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:41,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:42,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:42,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 191 transitions, 2225 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 18:40:42,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:42,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:42,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:42,576 INFO L124 PetriNetUnfolderBase]: 1045/1871 cut-off events. [2024-06-27 18:40:42,576 INFO L125 PetriNetUnfolderBase]: For 33710/33713 co-relation queries the response was YES. [2024-06-27 18:40:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10636 conditions, 1871 events. 1045/1871 cut-off events. For 33710/33713 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10136 event pairs, 246 based on Foata normal form. 5/1800 useless extension candidates. Maximal degree in co-relation 10548. Up to 1387 conditions per place. [2024-06-27 18:40:42,592 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 47 changer transitions 0/223 dead transitions. [2024-06-27 18:40:42,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 223 transitions, 2983 flow [2024-06-27 18:40:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:40:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:40:42,594 INFO L175 Difference]: Start difference. First operand has 183 places, 191 transitions, 2225 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:40:42,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 223 transitions, 2983 flow [2024-06-27 18:40:42,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 223 transitions, 2791 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:42,715 INFO L231 Difference]: Finished difference. Result has 183 places, 195 transitions, 2184 flow [2024-06-27 18:40:42,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2184, PETRI_PLACES=183, PETRI_TRANSITIONS=195} [2024-06-27 18:40:42,716 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-27 18:40:42,716 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 195 transitions, 2184 flow [2024-06-27 18:40:42,717 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 18:40:42,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:42,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:42,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:40:42,717 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:42,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:42,717 INFO L85 PathProgramCache]: Analyzing trace with hash -967994477, now seen corresponding path program 3 times [2024-06-27 18:40:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856318575] [2024-06-27 18:40:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856318575] [2024-06-27 18:40:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856318575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:43,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992247340] [2024-06-27 18:40:43,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:43,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:43,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:43,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:43,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 195 transitions, 2184 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 18:40:43,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:43,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:44,002 INFO L124 PetriNetUnfolderBase]: 1073/1915 cut-off events. [2024-06-27 18:40:44,002 INFO L125 PetriNetUnfolderBase]: For 36918/36918 co-relation queries the response was YES. [2024-06-27 18:40:44,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 1915 events. 1073/1915 cut-off events. For 36918/36918 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10392 event pairs, 262 based on Foata normal form. 2/1837 useless extension candidates. Maximal degree in co-relation 10739. Up to 1176 conditions per place. [2024-06-27 18:40:44,019 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 134 selfloop transitions, 82 changer transitions 0/223 dead transitions. [2024-06-27 18:40:44,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 223 transitions, 2925 flow [2024-06-27 18:40:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:40:44,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:40:44,020 INFO L175 Difference]: Start difference. First operand has 183 places, 195 transitions, 2184 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:40:44,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 223 transitions, 2925 flow [2024-06-27 18:40:44,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 223 transitions, 2851 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:44,144 INFO L231 Difference]: Finished difference. Result has 187 places, 199 transitions, 2328 flow [2024-06-27 18:40:44,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2328, PETRI_PLACES=187, PETRI_TRANSITIONS=199} [2024-06-27 18:40:44,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-27 18:40:44,145 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 199 transitions, 2328 flow [2024-06-27 18:40:44,145 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 18:40:44,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:44,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:44,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:40:44,145 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:44,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash -968001917, now seen corresponding path program 4 times [2024-06-27 18:40:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:44,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116519499] [2024-06-27 18:40:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:44,796 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 18:40:44,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:44,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116519499] [2024-06-27 18:40:44,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116519499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:44,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:44,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:44,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023907731] [2024-06-27 18:40:44,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:44,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:44,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:44,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:44,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 2328 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 18:40:44,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:44,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:44,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,258 INFO L124 PetriNetUnfolderBase]: 1069/1909 cut-off events. [2024-06-27 18:40:45,258 INFO L125 PetriNetUnfolderBase]: For 36266/36266 co-relation queries the response was YES. [2024-06-27 18:40:45,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10898 conditions, 1909 events. 1069/1909 cut-off events. For 36266/36266 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10322 event pairs, 262 based on Foata normal form. 2/1831 useless extension candidates. Maximal degree in co-relation 10808. Up to 1175 conditions per place. [2024-06-27 18:40:45,276 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 139 selfloop transitions, 78 changer transitions 0/224 dead transitions. [2024-06-27 18:40:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 3029 flow [2024-06-27 18:40:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:40:45,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:40:45,277 INFO L175 Difference]: Start difference. First operand has 187 places, 199 transitions, 2328 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:40:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 3029 flow [2024-06-27 18:40:45,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 224 transitions, 2878 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:45,404 INFO L231 Difference]: Finished difference. Result has 190 places, 199 transitions, 2338 flow [2024-06-27 18:40:45,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2177, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2338, PETRI_PLACES=190, PETRI_TRANSITIONS=199} [2024-06-27 18:40:45,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 18:40:45,405 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 199 transitions, 2338 flow [2024-06-27 18:40:45,405 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 18:40:45,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:45,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:45,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:40:45,405 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash -968002134, now seen corresponding path program 6 times [2024-06-27 18:40:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145172070] [2024-06-27 18:40:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145172070] [2024-06-27 18:40:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145172070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661240947] [2024-06-27 18:40:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:46,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:46,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:46,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 199 transitions, 2338 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 18:40:46,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:46,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:46,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,634 INFO L124 PetriNetUnfolderBase]: 1075/1916 cut-off events. [2024-06-27 18:40:46,634 INFO L125 PetriNetUnfolderBase]: For 36014/36017 co-relation queries the response was YES. [2024-06-27 18:40:46,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11035 conditions, 1916 events. 1075/1916 cut-off events. For 36014/36017 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10411 event pairs, 252 based on Foata normal form. 4/1839 useless extension candidates. Maximal degree in co-relation 10945. Up to 1582 conditions per place. [2024-06-27 18:40:46,651 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 45 changer transitions 0/221 dead transitions. [2024-06-27 18:40:46,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 221 transitions, 2861 flow [2024-06-27 18:40:46,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 18:40:46,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-27 18:40:46,652 INFO L175 Difference]: Start difference. First operand has 190 places, 199 transitions, 2338 flow. Second operand 9 states and 137 transitions. [2024-06-27 18:40:46,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 221 transitions, 2861 flow [2024-06-27 18:40:46,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 221 transitions, 2722 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:46,775 INFO L231 Difference]: Finished difference. Result has 192 places, 201 transitions, 2326 flow [2024-06-27 18:40:46,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2326, PETRI_PLACES=192, PETRI_TRANSITIONS=201} [2024-06-27 18:40:46,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 151 predicate places. [2024-06-27 18:40:46,775 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 201 transitions, 2326 flow [2024-06-27 18:40:46,776 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 18:40:46,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:40:46,776 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:46,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1004286772, now seen corresponding path program 7 times [2024-06-27 18:40:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728179484] [2024-06-27 18:40:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:47,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:47,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728179484] [2024-06-27 18:40:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728179484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:47,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:47,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774482880] [2024-06-27 18:40:47,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:47,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:47,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:47,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:47,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:47,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 201 transitions, 2326 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 18:40:47,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:47,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:48,030 INFO L124 PetriNetUnfolderBase]: 1081/1923 cut-off events. [2024-06-27 18:40:48,031 INFO L125 PetriNetUnfolderBase]: For 36790/36792 co-relation queries the response was YES. [2024-06-27 18:40:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10974 conditions, 1923 events. 1081/1923 cut-off events. For 36790/36792 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10410 event pairs, 253 based on Foata normal form. 3/1843 useless extension candidates. Maximal degree in co-relation 10883. Up to 1591 conditions per place. [2024-06-27 18:40:48,048 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 174 selfloop transitions, 46 changer transitions 0/227 dead transitions. [2024-06-27 18:40:48,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 227 transitions, 2879 flow [2024-06-27 18:40:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:40:48,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:40:48,049 INFO L175 Difference]: Start difference. First operand has 192 places, 201 transitions, 2326 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:40:48,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 227 transitions, 2879 flow [2024-06-27 18:40:48,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 227 transitions, 2784 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:48,204 INFO L231 Difference]: Finished difference. Result has 194 places, 203 transitions, 2362 flow [2024-06-27 18:40:48,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2231, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2362, PETRI_PLACES=194, PETRI_TRANSITIONS=203} [2024-06-27 18:40:48,205 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-27 18:40:48,205 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 203 transitions, 2362 flow [2024-06-27 18:40:48,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:48,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:48,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:48,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:40:48,205 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:48,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1965535047, now seen corresponding path program 5 times [2024-06-27 18:40:48,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:48,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5739914] [2024-06-27 18:40:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:48,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:48,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5739914] [2024-06-27 18:40:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5739914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:48,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19147906] [2024-06-27 18:40:48,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:48,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:48,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 203 transitions, 2362 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 18:40:48,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:48,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:49,383 INFO L124 PetriNetUnfolderBase]: 1092/1944 cut-off events. [2024-06-27 18:40:49,384 INFO L125 PetriNetUnfolderBase]: For 39672/39672 co-relation queries the response was YES. [2024-06-27 18:40:49,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 1944 events. 1092/1944 cut-off events. For 39672/39672 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10534 event pairs, 299 based on Foata normal form. 2/1863 useless extension candidates. Maximal degree in co-relation 11000. Up to 1782 conditions per place. [2024-06-27 18:40:49,401 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 201 selfloop transitions, 15 changer transitions 0/223 dead transitions. [2024-06-27 18:40:49,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 223 transitions, 2868 flow [2024-06-27 18:40:49,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 18:40:49,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38738738738738737 [2024-06-27 18:40:49,403 INFO L175 Difference]: Start difference. First operand has 194 places, 203 transitions, 2362 flow. Second operand 9 states and 129 transitions. [2024-06-27 18:40:49,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 223 transitions, 2868 flow [2024-06-27 18:40:49,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 223 transitions, 2767 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:49,545 INFO L231 Difference]: Finished difference. Result has 196 places, 205 transitions, 2322 flow [2024-06-27 18:40:49,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2322, PETRI_PLACES=196, PETRI_TRANSITIONS=205} [2024-06-27 18:40:49,546 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 18:40:49,546 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 205 transitions, 2322 flow [2024-06-27 18:40:49,546 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 18:40:49,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:49,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:49,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:40:49,547 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:49,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1975625547, now seen corresponding path program 6 times [2024-06-27 18:40:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240018285] [2024-06-27 18:40:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:50,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240018285] [2024-06-27 18:40:50,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240018285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:50,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:50,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:50,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210364196] [2024-06-27 18:40:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:50,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:50,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 205 transitions, 2322 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 18:40:50,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:50,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:50,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,903 INFO L124 PetriNetUnfolderBase]: 1118/1984 cut-off events. [2024-06-27 18:40:50,903 INFO L125 PetriNetUnfolderBase]: For 43934/43934 co-relation queries the response was YES. [2024-06-27 18:40:50,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11292 conditions, 1984 events. 1118/1984 cut-off events. For 43934/43934 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10795 event pairs, 297 based on Foata normal form. 2/1901 useless extension candidates. Maximal degree in co-relation 11199. Up to 1776 conditions per place. [2024-06-27 18:40:50,921 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 200 selfloop transitions, 22 changer transitions 0/229 dead transitions. [2024-06-27 18:40:50,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 229 transitions, 2980 flow [2024-06-27 18:40:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:50,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 18:40:50,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:40:50,922 INFO L175 Difference]: Start difference. First operand has 196 places, 205 transitions, 2322 flow. Second operand 9 states and 135 transitions. [2024-06-27 18:40:50,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 229 transitions, 2980 flow [2024-06-27 18:40:51,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 229 transitions, 2945 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:51,107 INFO L231 Difference]: Finished difference. Result has 198 places, 209 transitions, 2392 flow [2024-06-27 18:40:51,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2392, PETRI_PLACES=198, PETRI_TRANSITIONS=209} [2024-06-27 18:40:51,107 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-27 18:40:51,107 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 209 transitions, 2392 flow [2024-06-27 18:40:51,108 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 18:40:51,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:51,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:51,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:40:51,108 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1975633204, now seen corresponding path program 8 times [2024-06-27 18:40:51,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:51,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392593789] [2024-06-27 18:40:51,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:51,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392593789] [2024-06-27 18:40:51,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392593789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:51,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:51,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:51,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181050260] [2024-06-27 18:40:51,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:51,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:51,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:51,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 209 transitions, 2392 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 18:40:51,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:51,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:51,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:52,368 INFO L124 PetriNetUnfolderBase]: 1124/1993 cut-off events. [2024-06-27 18:40:52,368 INFO L125 PetriNetUnfolderBase]: For 44222/44222 co-relation queries the response was YES. [2024-06-27 18:40:52,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11435 conditions, 1993 events. 1124/1993 cut-off events. For 44222/44222 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10827 event pairs, 306 based on Foata normal form. 1/1908 useless extension candidates. Maximal degree in co-relation 11341. Up to 1852 conditions per place. [2024-06-27 18:40:52,388 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 204 selfloop transitions, 15 changer transitions 0/226 dead transitions. [2024-06-27 18:40:52,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 2910 flow [2024-06-27 18:40:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:52,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 18:40:52,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-27 18:40:52,389 INFO L175 Difference]: Start difference. First operand has 198 places, 209 transitions, 2392 flow. Second operand 9 states and 126 transitions. [2024-06-27 18:40:52,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 2910 flow [2024-06-27 18:40:52,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 226 transitions, 2871 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,562 INFO L231 Difference]: Finished difference. Result has 202 places, 211 transitions, 2426 flow [2024-06-27 18:40:52,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2426, PETRI_PLACES=202, PETRI_TRANSITIONS=211} [2024-06-27 18:40:52,562 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 18:40:52,562 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 211 transitions, 2426 flow [2024-06-27 18:40:52,563 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 18:40:52,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:40:52,563 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:52,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1737730243, now seen corresponding path program 7 times [2024-06-27 18:40:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881588086] [2024-06-27 18:40:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:53,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881588086] [2024-06-27 18:40:53,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881588086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:53,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276703827] [2024-06-27 18:40:53,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:53,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:53,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 211 transitions, 2426 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 18:40:53,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:53,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:53,937 INFO L124 PetriNetUnfolderBase]: 1120/1987 cut-off events. [2024-06-27 18:40:53,937 INFO L125 PetriNetUnfolderBase]: For 43921/43921 co-relation queries the response was YES. [2024-06-27 18:40:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11316 conditions, 1987 events. 1120/1987 cut-off events. For 43921/43921 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10828 event pairs, 296 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 11220. Up to 1782 conditions per place. [2024-06-27 18:40:53,955 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 199 selfloop transitions, 25 changer transitions 0/231 dead transitions. [2024-06-27 18:40:53,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 231 transitions, 2948 flow [2024-06-27 18:40:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 18:40:53,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3837837837837838 [2024-06-27 18:40:53,957 INFO L175 Difference]: Start difference. First operand has 202 places, 211 transitions, 2426 flow. Second operand 10 states and 142 transitions. [2024-06-27 18:40:53,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 231 transitions, 2948 flow [2024-06-27 18:40:54,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 231 transitions, 2897 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:54,109 INFO L231 Difference]: Finished difference. Result has 206 places, 213 transitions, 2459 flow [2024-06-27 18:40:54,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2459, PETRI_PLACES=206, PETRI_TRANSITIONS=213} [2024-06-27 18:40:54,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 18:40:54,110 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 213 transitions, 2459 flow [2024-06-27 18:40:54,110 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 18:40:54,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:54,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:40:54,111 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:54,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,111 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926359, now seen corresponding path program 8 times [2024-06-27 18:40:54,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151891657] [2024-06-27 18:40:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:54,808 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 18:40:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:54,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151891657] [2024-06-27 18:40:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151891657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:54,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215154483] [2024-06-27 18:40:54,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:54,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:54,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:54,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 213 transitions, 2459 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 18:40:54,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:54,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:54,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:55,343 INFO L124 PetriNetUnfolderBase]: 1131/2004 cut-off events. [2024-06-27 18:40:55,343 INFO L125 PetriNetUnfolderBase]: For 45339/45339 co-relation queries the response was YES. [2024-06-27 18:40:55,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11460 conditions, 2004 events. 1131/2004 cut-off events. For 45339/45339 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10924 event pairs, 303 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 11362. Up to 1801 conditions per place. [2024-06-27 18:40:55,363 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 204 selfloop transitions, 25 changer transitions 0/236 dead transitions. [2024-06-27 18:40:55,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 236 transitions, 3121 flow [2024-06-27 18:40:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 18:40:55,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-27 18:40:55,364 INFO L175 Difference]: Start difference. First operand has 206 places, 213 transitions, 2459 flow. Second operand 9 states and 137 transitions. [2024-06-27 18:40:55,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 236 transitions, 3121 flow [2024-06-27 18:40:55,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 3073 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:55,568 INFO L231 Difference]: Finished difference. Result has 208 places, 215 transitions, 2496 flow [2024-06-27 18:40:55,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2496, PETRI_PLACES=208, PETRI_TRANSITIONS=215} [2024-06-27 18:40:55,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-27 18:40:55,568 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 215 transitions, 2496 flow [2024-06-27 18:40:55,569 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 18:40:55,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:55,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:55,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:40:55,569 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:55,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2034926142, now seen corresponding path program 9 times [2024-06-27 18:40:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:55,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622574790] [2024-06-27 18:40:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:55,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:56,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:56,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622574790] [2024-06-27 18:40:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622574790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:56,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:56,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:56,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007940881] [2024-06-27 18:40:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:56,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:56,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:56,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:56,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:56,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 215 transitions, 2496 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 18:40:56,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:56,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:56,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,805 INFO L124 PetriNetUnfolderBase]: 1137/2013 cut-off events. [2024-06-27 18:40:56,805 INFO L125 PetriNetUnfolderBase]: For 45366/45366 co-relation queries the response was YES. [2024-06-27 18:40:56,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11573 conditions, 2013 events. 1137/2013 cut-off events. For 45366/45366 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10971 event pairs, 307 based on Foata normal form. 1/1926 useless extension candidates. Maximal degree in co-relation 11473. Up to 1844 conditions per place. [2024-06-27 18:40:56,822 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 201 selfloop transitions, 25 changer transitions 0/233 dead transitions. [2024-06-27 18:40:56,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 233 transitions, 3038 flow [2024-06-27 18:40:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 18:40:56,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38738738738738737 [2024-06-27 18:40:56,826 INFO L175 Difference]: Start difference. First operand has 208 places, 215 transitions, 2496 flow. Second operand 9 states and 129 transitions. [2024-06-27 18:40:56,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 233 transitions, 3038 flow [2024-06-27 18:40:57,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 233 transitions, 2894 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:57,019 INFO L231 Difference]: Finished difference. Result has 208 places, 217 transitions, 2449 flow [2024-06-27 18:40:57,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2352, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2449, PETRI_PLACES=208, PETRI_TRANSITIONS=217} [2024-06-27 18:40:57,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-27 18:40:57,020 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 217 transitions, 2449 flow [2024-06-27 18:40:57,020 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 18:40:57,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:57,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:57,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:40:57,021 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:57,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1730587843, now seen corresponding path program 9 times [2024-06-27 18:40:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598471651] [2024-06-27 18:40:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:57,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598471651] [2024-06-27 18:40:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598471651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:57,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:57,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:57,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394603985] [2024-06-27 18:40:57,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:57,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:57,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 217 transitions, 2449 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 18:40:57,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:57,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:57,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:58,346 INFO L124 PetriNetUnfolderBase]: 1148/2031 cut-off events. [2024-06-27 18:40:58,346 INFO L125 PetriNetUnfolderBase]: For 47833/47833 co-relation queries the response was YES. [2024-06-27 18:40:58,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11475 conditions, 2031 events. 1148/2031 cut-off events. For 47833/47833 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11073 event pairs, 305 based on Foata normal form. 2/1944 useless extension candidates. Maximal degree in co-relation 11375. Up to 1820 conditions per place. [2024-06-27 18:40:58,365 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 201 selfloop transitions, 29 changer transitions 0/237 dead transitions. [2024-06-27 18:40:58,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 237 transitions, 3098 flow [2024-06-27 18:40:58,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-27 18:40:58,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:40:58,366 INFO L175 Difference]: Start difference. First operand has 208 places, 217 transitions, 2449 flow. Second operand 9 states and 135 transitions. [2024-06-27 18:40:58,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 237 transitions, 3098 flow [2024-06-27 18:40:58,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 237 transitions, 3031 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:58,541 INFO L231 Difference]: Finished difference. Result has 210 places, 219 transitions, 2467 flow [2024-06-27 18:40:58,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2467, PETRI_PLACES=210, PETRI_TRANSITIONS=219} [2024-06-27 18:40:58,542 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 18:40:58,542 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 219 transitions, 2467 flow [2024-06-27 18:40:58,542 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 18:40:58,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:58,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:58,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:40:58,543 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:58,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2035128169, now seen corresponding path program 10 times [2024-06-27 18:40:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497219858] [2024-06-27 18:40:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497219858] [2024-06-27 18:40:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497219858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:59,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:59,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939810436] [2024-06-27 18:40:59,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:59,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:59,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:59,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:59,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 219 transitions, 2467 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 18:40:59,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:59,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:59,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:00,099 INFO L124 PetriNetUnfolderBase]: 1144/2025 cut-off events. [2024-06-27 18:41:00,100 INFO L125 PetriNetUnfolderBase]: For 45781/45781 co-relation queries the response was YES. [2024-06-27 18:41:00,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11361 conditions, 2025 events. 1144/2025 cut-off events. For 45781/45781 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11045 event pairs, 304 based on Foata normal form. 2/1938 useless extension candidates. Maximal degree in co-relation 11260. Up to 1817 conditions per place. [2024-06-27 18:41:00,116 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 202 selfloop transitions, 28 changer transitions 0/237 dead transitions. [2024-06-27 18:41:00,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 237 transitions, 2978 flow [2024-06-27 18:41:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-27 18:41:00,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084084084084084 [2024-06-27 18:41:00,124 INFO L175 Difference]: Start difference. First operand has 210 places, 219 transitions, 2467 flow. Second operand 9 states and 136 transitions. [2024-06-27 18:41:00,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 237 transitions, 2978 flow [2024-06-27 18:41:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 237 transitions, 2912 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:00,284 INFO L231 Difference]: Finished difference. Result has 213 places, 219 transitions, 2462 flow [2024-06-27 18:41:00,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2401, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2462, PETRI_PLACES=213, PETRI_TRANSITIONS=219} [2024-06-27 18:41:00,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 18:41:00,285 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 219 transitions, 2462 flow [2024-06-27 18:41:00,285 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 18:41:00,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:00,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:00,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:41:00,286 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:00,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:00,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2035127952, now seen corresponding path program 10 times [2024-06-27 18:41:00,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346150059] [2024-06-27 18:41:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:00,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346150059] [2024-06-27 18:41:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346150059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:00,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522626215] [2024-06-27 18:41:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:00,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:00,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 219 transitions, 2462 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 18:41:00,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:00,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:01,522 INFO L124 PetriNetUnfolderBase]: 1142/2022 cut-off events. [2024-06-27 18:41:01,522 INFO L125 PetriNetUnfolderBase]: For 43482/43482 co-relation queries the response was YES. [2024-06-27 18:41:01,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11267 conditions, 2022 events. 1142/2022 cut-off events. For 43482/43482 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11026 event pairs, 309 based on Foata normal form. 1/1934 useless extension candidates. Maximal degree in co-relation 11165. Up to 1862 conditions per place. [2024-06-27 18:41:01,539 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 203 selfloop transitions, 23 changer transitions 0/233 dead transitions. [2024-06-27 18:41:01,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 233 transitions, 2957 flow [2024-06-27 18:41:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-27 18:41:01,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38738738738738737 [2024-06-27 18:41:01,540 INFO L175 Difference]: Start difference. First operand has 213 places, 219 transitions, 2462 flow. Second operand 9 states and 129 transitions. [2024-06-27 18:41:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 233 transitions, 2957 flow [2024-06-27 18:41:01,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 233 transitions, 2882 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:01,691 INFO L231 Difference]: Finished difference. Result has 213 places, 219 transitions, 2438 flow [2024-06-27 18:41:01,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2438, PETRI_PLACES=213, PETRI_TRANSITIONS=219} [2024-06-27 18:41:01,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-27 18:41:01,692 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 219 transitions, 2438 flow [2024-06-27 18:41:01,692 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 18:41:01,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:01,693 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 18:41:01,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:41:01,693 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:01,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:01,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1286619709, now seen corresponding path program 1 times [2024-06-27 18:41:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760989791] [2024-06-27 18:41:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:01,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:02,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:02,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760989791] [2024-06-27 18:41:02,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760989791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:02,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:02,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807092158] [2024-06-27 18:41:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:02,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:02,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 219 transitions, 2438 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 18:41:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:02,864 INFO L124 PetriNetUnfolderBase]: 1170/2091 cut-off events. [2024-06-27 18:41:02,865 INFO L125 PetriNetUnfolderBase]: For 46632/46632 co-relation queries the response was YES. [2024-06-27 18:41:02,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11483 conditions, 2091 events. 1170/2091 cut-off events. For 46632/46632 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11624 event pairs, 183 based on Foata normal form. 2/1998 useless extension candidates. Maximal degree in co-relation 11380. Up to 748 conditions per place. [2024-06-27 18:41:02,880 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 185 selfloop transitions, 65 changer transitions 0/257 dead transitions. [2024-06-27 18:41:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 257 transitions, 3234 flow [2024-06-27 18:41:02,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 18:41:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-27 18:41:02,882 INFO L175 Difference]: Start difference. First operand has 213 places, 219 transitions, 2438 flow. Second operand 9 states and 152 transitions. [2024-06-27 18:41:02,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 257 transitions, 3234 flow [2024-06-27 18:41:03,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 257 transitions, 3091 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:03,036 INFO L231 Difference]: Finished difference. Result has 215 places, 222 transitions, 2487 flow [2024-06-27 18:41:03,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2487, PETRI_PLACES=215, PETRI_TRANSITIONS=222} [2024-06-27 18:41:03,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 18:41:03,037 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 222 transitions, 2487 flow [2024-06-27 18:41:03,037 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 18:41:03,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:03,037 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 18:41:03,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:41:03,038 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:03,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1933655805, now seen corresponding path program 2 times [2024-06-27 18:41:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279994535] [2024-06-27 18:41:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:03,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:03,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:03,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279994535] [2024-06-27 18:41:03,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279994535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:03,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:03,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:03,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532205165] [2024-06-27 18:41:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:03,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:03,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:03,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:03,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 222 transitions, 2487 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 18:41:03,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:03,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:04,451 INFO L124 PetriNetUnfolderBase]: 1339/2421 cut-off events. [2024-06-27 18:41:04,451 INFO L125 PetriNetUnfolderBase]: For 53357/53360 co-relation queries the response was YES. [2024-06-27 18:41:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13227 conditions, 2421 events. 1339/2421 cut-off events. For 53357/53360 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14101 event pairs, 292 based on Foata normal form. 5/2317 useless extension candidates. Maximal degree in co-relation 13121. Up to 1600 conditions per place. [2024-06-27 18:41:04,471 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 196 selfloop transitions, 79 changer transitions 0/282 dead transitions. [2024-06-27 18:41:04,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 282 transitions, 3553 flow [2024-06-27 18:41:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:41:04,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:41:04,473 INFO L175 Difference]: Start difference. First operand has 215 places, 222 transitions, 2487 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:41:04,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 282 transitions, 3553 flow [2024-06-27 18:41:04,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 282 transitions, 3316 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:04,695 INFO L231 Difference]: Finished difference. Result has 220 places, 233 transitions, 2573 flow [2024-06-27 18:41:04,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2265, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2573, PETRI_PLACES=220, PETRI_TRANSITIONS=233} [2024-06-27 18:41:04,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:41:04,696 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 233 transitions, 2573 flow [2024-06-27 18:41:04,696 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 18:41:04,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:04,696 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 18:41:04,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:41:04,697 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:04,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1933535649, now seen corresponding path program 1 times [2024-06-27 18:41:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:04,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971807948] [2024-06-27 18:41:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:04,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971807948] [2024-06-27 18:41:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971807948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342462244] [2024-06-27 18:41:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:05,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:05,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:05,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:05,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:05,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 233 transitions, 2573 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 18:41:05,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:05,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:05,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:05,942 INFO L124 PetriNetUnfolderBase]: 1369/2468 cut-off events. [2024-06-27 18:41:05,942 INFO L125 PetriNetUnfolderBase]: For 58938/58938 co-relation queries the response was YES. [2024-06-27 18:41:05,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13470 conditions, 2468 events. 1369/2468 cut-off events. For 58938/58938 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14388 event pairs, 319 based on Foata normal form. 2/2351 useless extension candidates. Maximal degree in co-relation 13364. Up to 1569 conditions per place. [2024-06-27 18:41:05,966 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 174 selfloop transitions, 80 changer transitions 0/261 dead transitions. [2024-06-27 18:41:05,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 261 transitions, 3447 flow [2024-06-27 18:41:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:41:05,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:41:05,967 INFO L175 Difference]: Start difference. First operand has 220 places, 233 transitions, 2573 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:41:05,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 261 transitions, 3447 flow [2024-06-27 18:41:06,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 261 transitions, 3380 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:06,245 INFO L231 Difference]: Finished difference. Result has 226 places, 237 transitions, 2720 flow [2024-06-27 18:41:06,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2720, PETRI_PLACES=226, PETRI_TRANSITIONS=237} [2024-06-27 18:41:06,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 18:41:06,246 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 237 transitions, 2720 flow [2024-06-27 18:41:06,246 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 18:41:06,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:06,246 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 18:41:06,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:41:06,246 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:06,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1933535835, now seen corresponding path program 3 times [2024-06-27 18:41:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427529046] [2024-06-27 18:41:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:06,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:07,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:07,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427529046] [2024-06-27 18:41:07,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427529046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:07,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:07,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538914152] [2024-06-27 18:41:07,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:07,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:07,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:07,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:07,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:07,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 237 transitions, 2720 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 18:41:07,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:07,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,786 INFO L124 PetriNetUnfolderBase]: 1389/2507 cut-off events. [2024-06-27 18:41:07,787 INFO L125 PetriNetUnfolderBase]: For 60150/60153 co-relation queries the response was YES. [2024-06-27 18:41:07,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13955 conditions, 2507 events. 1389/2507 cut-off events. For 60150/60153 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14686 event pairs, 341 based on Foata normal form. 5/2391 useless extension candidates. Maximal degree in co-relation 13847. Up to 1911 conditions per place. [2024-06-27 18:41:07,809 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 186 selfloop transitions, 76 changer transitions 0/269 dead transitions. [2024-06-27 18:41:07,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 269 transitions, 3391 flow [2024-06-27 18:41:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:41:07,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:41:07,810 INFO L175 Difference]: Start difference. First operand has 226 places, 237 transitions, 2720 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:41:07,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 269 transitions, 3391 flow [2024-06-27 18:41:08,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 269 transitions, 3296 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:08,089 INFO L231 Difference]: Finished difference. Result has 232 places, 240 transitions, 2831 flow [2024-06-27 18:41:08,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2831, PETRI_PLACES=232, PETRI_TRANSITIONS=240} [2024-06-27 18:41:08,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-27 18:41:08,090 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 240 transitions, 2831 flow [2024-06-27 18:41:08,090 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 18:41:08,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:08,090 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 18:41:08,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:41:08,091 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:08,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:08,091 INFO L85 PathProgramCache]: Analyzing trace with hash 953246257, now seen corresponding path program 4 times [2024-06-27 18:41:08,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:08,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169072347] [2024-06-27 18:41:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:08,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:08,598 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 18:41:08,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:08,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169072347] [2024-06-27 18:41:08,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169072347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:08,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:08,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:08,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607591882] [2024-06-27 18:41:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:08,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:08,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:08,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:08,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 240 transitions, 2831 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 18:41:08,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:08,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:08,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:09,304 INFO L124 PetriNetUnfolderBase]: 1433/2609 cut-off events. [2024-06-27 18:41:09,304 INFO L125 PetriNetUnfolderBase]: For 67217/67217 co-relation queries the response was YES. [2024-06-27 18:41:09,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14353 conditions, 2609 events. 1433/2609 cut-off events. For 67217/67217 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15542 event pairs, 334 based on Foata normal form. 4/2491 useless extension candidates. Maximal degree in co-relation 14243. Up to 1780 conditions per place. [2024-06-27 18:41:09,324 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 189 selfloop transitions, 76 changer transitions 0/272 dead transitions. [2024-06-27 18:41:09,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 272 transitions, 3639 flow [2024-06-27 18:41:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:41:09,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:41:09,325 INFO L175 Difference]: Start difference. First operand has 232 places, 240 transitions, 2831 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:41:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 272 transitions, 3639 flow [2024-06-27 18:41:09,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 272 transitions, 3465 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:09,587 INFO L231 Difference]: Finished difference. Result has 235 places, 243 transitions, 2863 flow [2024-06-27 18:41:09,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2863, PETRI_PLACES=235, PETRI_TRANSITIONS=243} [2024-06-27 18:41:09,588 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-27 18:41:09,588 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 243 transitions, 2863 flow [2024-06-27 18:41:09,588 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 18:41:09,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:09,588 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 18:41:09,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:41:09,588 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:09,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1463687147, now seen corresponding path program 2 times [2024-06-27 18:41:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541684194] [2024-06-27 18:41:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:10,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:10,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541684194] [2024-06-27 18:41:10,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541684194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:10,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:10,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787409853] [2024-06-27 18:41:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:10,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:10,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 243 transitions, 2863 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 18:41:10,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:10,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:10,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:11,320 INFO L124 PetriNetUnfolderBase]: 1446/2628 cut-off events. [2024-06-27 18:41:11,320 INFO L125 PetriNetUnfolderBase]: For 65488/65488 co-relation queries the response was YES. [2024-06-27 18:41:11,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 2628 events. 1446/2628 cut-off events. For 65488/65488 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15641 event pairs, 353 based on Foata normal form. 2/2499 useless extension candidates. Maximal degree in co-relation 14525. Up to 1697 conditions per place. [2024-06-27 18:41:11,344 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 181 selfloop transitions, 84 changer transitions 0/272 dead transitions. [2024-06-27 18:41:11,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 272 transitions, 3761 flow [2024-06-27 18:41:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:41:11,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:41:11,346 INFO L175 Difference]: Start difference. First operand has 235 places, 243 transitions, 2863 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:41:11,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 272 transitions, 3761 flow [2024-06-27 18:41:11,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 272 transitions, 3663 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:11,658 INFO L231 Difference]: Finished difference. Result has 240 places, 245 transitions, 2964 flow [2024-06-27 18:41:11,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2765, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2964, PETRI_PLACES=240, PETRI_TRANSITIONS=245} [2024-06-27 18:41:11,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 18:41:11,669 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 245 transitions, 2964 flow [2024-06-27 18:41:11,669 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 18:41:11,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:11,669 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 18:41:11,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:41:11,669 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:11,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1463680637, now seen corresponding path program 3 times [2024-06-27 18:41:11,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:11,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643558883] [2024-06-27 18:41:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:11,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:12,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:12,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643558883] [2024-06-27 18:41:12,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643558883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:12,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858741602] [2024-06-27 18:41:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:12,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:12,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:12,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 245 transitions, 2964 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 18:41:12,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:12,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:12,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:13,411 INFO L124 PetriNetUnfolderBase]: 1459/2644 cut-off events. [2024-06-27 18:41:13,412 INFO L125 PetriNetUnfolderBase]: For 67575/67581 co-relation queries the response was YES. [2024-06-27 18:41:13,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15036 conditions, 2644 events. 1459/2644 cut-off events. For 67575/67581 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15734 event pairs, 339 based on Foata normal form. 8/2518 useless extension candidates. Maximal degree in co-relation 14923. Up to 2017 conditions per place. [2024-06-27 18:41:13,438 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 204 selfloop transitions, 63 changer transitions 0/274 dead transitions. [2024-06-27 18:41:13,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 274 transitions, 3612 flow [2024-06-27 18:41:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:41:13,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:41:13,439 INFO L175 Difference]: Start difference. First operand has 240 places, 245 transitions, 2964 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:41:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 274 transitions, 3612 flow [2024-06-27 18:41:13,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 274 transitions, 3428 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:13,814 INFO L231 Difference]: Finished difference. Result has 242 places, 247 transitions, 2945 flow [2024-06-27 18:41:13,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2784, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2945, PETRI_PLACES=242, PETRI_TRANSITIONS=247} [2024-06-27 18:41:13,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-27 18:41:13,815 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 247 transitions, 2945 flow [2024-06-27 18:41:13,815 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 18:41:13,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:13,815 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 18:41:13,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:41:13,815 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:13,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:13,816 INFO L85 PathProgramCache]: Analyzing trace with hash 589939771, now seen corresponding path program 5 times [2024-06-27 18:41:13,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:13,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63168591] [2024-06-27 18:41:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:13,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:14,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63168591] [2024-06-27 18:41:14,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63168591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:14,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:14,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175652264] [2024-06-27 18:41:14,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:14,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:14,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:14,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:14,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 247 transitions, 2945 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 18:41:14,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:14,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:14,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:15,379 INFO L124 PetriNetUnfolderBase]: 1472/2670 cut-off events. [2024-06-27 18:41:15,379 INFO L125 PetriNetUnfolderBase]: For 69142/69142 co-relation queries the response was YES. [2024-06-27 18:41:15,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14911 conditions, 2670 events. 1472/2670 cut-off events. For 69142/69142 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15932 event pairs, 364 based on Foata normal form. 4/2543 useless extension candidates. Maximal degree in co-relation 14797. Up to 2022 conditions per place. [2024-06-27 18:41:15,408 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 188 selfloop transitions, 79 changer transitions 0/274 dead transitions. [2024-06-27 18:41:15,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 274 transitions, 3599 flow [2024-06-27 18:41:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:41:15,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:41:15,410 INFO L175 Difference]: Start difference. First operand has 242 places, 247 transitions, 2945 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:41:15,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 274 transitions, 3599 flow [2024-06-27 18:41:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 274 transitions, 3460 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:15,726 INFO L231 Difference]: Finished difference. Result has 244 places, 251 transitions, 3025 flow [2024-06-27 18:41:15,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2808, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3025, PETRI_PLACES=244, PETRI_TRANSITIONS=251} [2024-06-27 18:41:15,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-27 18:41:15,727 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 251 transitions, 3025 flow [2024-06-27 18:41:15,727 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 18:41:15,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:15,727 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 18:41:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:41:15,727 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:15,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1463502821, now seen corresponding path program 6 times [2024-06-27 18:41:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985660216] [2024-06-27 18:41:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:16,427 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 18:41:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985660216] [2024-06-27 18:41:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985660216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:16,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:16,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:16,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522722190] [2024-06-27 18:41:16,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:16,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:16,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:16,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:16,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:16,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:16,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 251 transitions, 3025 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 18:41:16,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:16,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:16,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:17,200 INFO L124 PetriNetUnfolderBase]: 1523/2785 cut-off events. [2024-06-27 18:41:17,200 INFO L125 PetriNetUnfolderBase]: For 71801/71807 co-relation queries the response was YES. [2024-06-27 18:41:17,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15609 conditions, 2785 events. 1523/2785 cut-off events. For 71801/71807 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 16955 event pairs, 350 based on Foata normal form. 8/2656 useless extension candidates. Maximal degree in co-relation 15494. Up to 2136 conditions per place. [2024-06-27 18:41:17,228 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 53 changer transitions 0/289 dead transitions. [2024-06-27 18:41:17,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 289 transitions, 3957 flow [2024-06-27 18:41:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:41:17,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:41:17,230 INFO L175 Difference]: Start difference. First operand has 244 places, 251 transitions, 3025 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:41:17,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 289 transitions, 3957 flow [2024-06-27 18:41:17,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 289 transitions, 3779 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:17,594 INFO L231 Difference]: Finished difference. Result has 246 places, 255 transitions, 3055 flow [2024-06-27 18:41:17,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3055, PETRI_PLACES=246, PETRI_TRANSITIONS=255} [2024-06-27 18:41:17,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 18:41:17,594 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 255 transitions, 3055 flow [2024-06-27 18:41:17,594 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 18:41:17,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:17,595 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 18:41:17,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:41:17,595 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 758378925, now seen corresponding path program 7 times [2024-06-27 18:41:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:17,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776449770] [2024-06-27 18:41:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:18,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776449770] [2024-06-27 18:41:18,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776449770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:18,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:18,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:18,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123463672] [2024-06-27 18:41:18,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:18,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:18,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:18,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:18,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:18,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:18,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 255 transitions, 3055 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 18:41:18,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:18,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:18,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:18,981 INFO L124 PetriNetUnfolderBase]: 1524/2794 cut-off events. [2024-06-27 18:41:18,981 INFO L125 PetriNetUnfolderBase]: For 69122/69128 co-relation queries the response was YES. [2024-06-27 18:41:19,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15549 conditions, 2794 events. 1524/2794 cut-off events. For 69122/69128 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17047 event pairs, 379 based on Foata normal form. 8/2658 useless extension candidates. Maximal degree in co-relation 15432. Up to 2298 conditions per place. [2024-06-27 18:41:19,009 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 226 selfloop transitions, 48 changer transitions 0/281 dead transitions. [2024-06-27 18:41:19,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 281 transitions, 3715 flow [2024-06-27 18:41:19,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 18:41:19,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:41:19,010 INFO L175 Difference]: Start difference. First operand has 246 places, 255 transitions, 3055 flow. Second operand 9 states and 144 transitions. [2024-06-27 18:41:19,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 281 transitions, 3715 flow [2024-06-27 18:41:19,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 281 transitions, 3602 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:19,381 INFO L231 Difference]: Finished difference. Result has 250 places, 256 transitions, 3058 flow [2024-06-27 18:41:19,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3058, PETRI_PLACES=250, PETRI_TRANSITIONS=256} [2024-06-27 18:41:19,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-27 18:41:19,382 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 256 transitions, 3058 flow [2024-06-27 18:41:19,382 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 18:41:19,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:19,382 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 18:41:19,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:41:19,382 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:19,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1463507657, now seen corresponding path program 4 times [2024-06-27 18:41:19,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:19,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530390608] [2024-06-27 18:41:19,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:19,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:20,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:20,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530390608] [2024-06-27 18:41:20,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530390608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:20,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564251009] [2024-06-27 18:41:20,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:20,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:20,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:20,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 256 transitions, 3058 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 18:41:20,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:20,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:20,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:21,001 INFO L124 PetriNetUnfolderBase]: 1520/2788 cut-off events. [2024-06-27 18:41:21,002 INFO L125 PetriNetUnfolderBase]: For 64716/64722 co-relation queries the response was YES. [2024-06-27 18:41:21,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15336 conditions, 2788 events. 1520/2788 cut-off events. For 64716/64722 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17014 event pairs, 370 based on Foata normal form. 8/2651 useless extension candidates. Maximal degree in co-relation 15217. Up to 2092 conditions per place. [2024-06-27 18:41:21,030 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 204 selfloop transitions, 70 changer transitions 0/281 dead transitions. [2024-06-27 18:41:21,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 281 transitions, 3684 flow [2024-06-27 18:41:21,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:21,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:41:21,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:41:21,031 INFO L175 Difference]: Start difference. First operand has 250 places, 256 transitions, 3058 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:41:21,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 281 transitions, 3684 flow [2024-06-27 18:41:21,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 281 transitions, 3586 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:21,371 INFO L231 Difference]: Finished difference. Result has 252 places, 256 transitions, 3105 flow [2024-06-27 18:41:21,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3105, PETRI_PLACES=252, PETRI_TRANSITIONS=256} [2024-06-27 18:41:21,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:41:21,372 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 256 transitions, 3105 flow [2024-06-27 18:41:21,372 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 18:41:21,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:21,372 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 18:41:21,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:41:21,373 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:21,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 753790305, now seen corresponding path program 8 times [2024-06-27 18:41:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809359407] [2024-06-27 18:41:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:21,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:21,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:21,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809359407] [2024-06-27 18:41:21,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809359407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:21,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:21,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:21,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590355920] [2024-06-27 18:41:21,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:21,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:21,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:21,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:21,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:21,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:21,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 256 transitions, 3105 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 18:41:21,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:21,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:21,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:22,737 INFO L124 PetriNetUnfolderBase]: 1544/2847 cut-off events. [2024-06-27 18:41:22,737 INFO L125 PetriNetUnfolderBase]: For 67153/67153 co-relation queries the response was YES. [2024-06-27 18:41:22,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15735 conditions, 2847 events. 1544/2847 cut-off events. For 67153/67153 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17577 event pairs, 334 based on Foata normal form. 2/2714 useless extension candidates. Maximal degree in co-relation 15615. Up to 1526 conditions per place. [2024-06-27 18:41:22,765 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 196 selfloop transitions, 86 changer transitions 0/289 dead transitions. [2024-06-27 18:41:22,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 289 transitions, 3831 flow [2024-06-27 18:41:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:41:22,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:41:22,767 INFO L175 Difference]: Start difference. First operand has 252 places, 256 transitions, 3105 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:41:22,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 289 transitions, 3831 flow [2024-06-27 18:41:23,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 289 transitions, 3661 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:23,135 INFO L231 Difference]: Finished difference. Result has 254 places, 258 transitions, 3166 flow [2024-06-27 18:41:23,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3166, PETRI_PLACES=254, PETRI_TRANSITIONS=258} [2024-06-27 18:41:23,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-27 18:41:23,135 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 258 transitions, 3166 flow [2024-06-27 18:41:23,135 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 18:41:23,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:23,136 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 18:41:23,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:41:23,136 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:23,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:23,136 INFO L85 PathProgramCache]: Analyzing trace with hash -120545021, now seen corresponding path program 9 times [2024-06-27 18:41:23,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220646806] [2024-06-27 18:41:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:23,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220646806] [2024-06-27 18:41:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220646806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:23,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882156275] [2024-06-27 18:41:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:23,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:23,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 258 transitions, 3166 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 18:41:23,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:23,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:23,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:24,533 INFO L124 PetriNetUnfolderBase]: 1568/2900 cut-off events. [2024-06-27 18:41:24,533 INFO L125 PetriNetUnfolderBase]: For 70409/70411 co-relation queries the response was YES. [2024-06-27 18:41:24,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16233 conditions, 2900 events. 1568/2900 cut-off events. For 70409/70411 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18093 event pairs, 263 based on Foata normal form. 4/2763 useless extension candidates. Maximal degree in co-relation 16111. Up to 1847 conditions per place. [2024-06-27 18:41:24,562 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 208 selfloop transitions, 80 changer transitions 0/295 dead transitions. [2024-06-27 18:41:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 295 transitions, 4067 flow [2024-06-27 18:41:24,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:41:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:41:24,563 INFO L175 Difference]: Start difference. First operand has 254 places, 258 transitions, 3166 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:41:24,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 295 transitions, 4067 flow [2024-06-27 18:41:24,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 295 transitions, 3879 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:24,975 INFO L231 Difference]: Finished difference. Result has 257 places, 260 transitions, 3192 flow [2024-06-27 18:41:24,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3192, PETRI_PLACES=257, PETRI_TRANSITIONS=260} [2024-06-27 18:41:24,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 18:41:24,976 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 260 transitions, 3192 flow [2024-06-27 18:41:24,976 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 18:41:24,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:24,976 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 18:41:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:41:24,976 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:24,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -120424865, now seen corresponding path program 5 times [2024-06-27 18:41:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469000623] [2024-06-27 18:41:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:25,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:25,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469000623] [2024-06-27 18:41:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469000623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:25,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:25,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344444048] [2024-06-27 18:41:25,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:25,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:25,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:25,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:25,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 260 transitions, 3192 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 18:41:25,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:25,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:25,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:26,447 INFO L124 PetriNetUnfolderBase]: 1564/2893 cut-off events. [2024-06-27 18:41:26,448 INFO L125 PetriNetUnfolderBase]: For 64605/64607 co-relation queries the response was YES. [2024-06-27 18:41:26,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16007 conditions, 2893 events. 1564/2893 cut-off events. For 64605/64607 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 17952 event pairs, 401 based on Foata normal form. 4/2743 useless extension candidates. Maximal degree in co-relation 15884. Up to 1910 conditions per place. [2024-06-27 18:41:26,479 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 92 changer transitions 0/286 dead transitions. [2024-06-27 18:41:26,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 286 transitions, 3975 flow [2024-06-27 18:41:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:41:26,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:41:26,481 INFO L175 Difference]: Start difference. First operand has 257 places, 260 transitions, 3192 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:41:26,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 286 transitions, 3975 flow [2024-06-27 18:41:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 286 transitions, 3601 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 18:41:26,918 INFO L231 Difference]: Finished difference. Result has 255 places, 260 transitions, 3010 flow [2024-06-27 18:41:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3010, PETRI_PLACES=255, PETRI_TRANSITIONS=260} [2024-06-27 18:41:26,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 18:41:26,925 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 260 transitions, 3010 flow [2024-06-27 18:41:26,926 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 18:41:26,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:26,926 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 18:41:26,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:41:26,926 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:26,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:26,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1063474131, now seen corresponding path program 10 times [2024-06-27 18:41:26,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:26,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361758475] [2024-06-27 18:41:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:26,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:27,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361758475] [2024-06-27 18:41:27,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361758475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:27,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:27,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:27,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107106762] [2024-06-27 18:41:27,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:27,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:27,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 260 transitions, 3010 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 18:41:27,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:27,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:27,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:28,286 INFO L124 PetriNetUnfolderBase]: 1611/2998 cut-off events. [2024-06-27 18:41:28,286 INFO L125 PetriNetUnfolderBase]: For 70437/70439 co-relation queries the response was YES. [2024-06-27 18:41:28,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15737 conditions, 2998 events. 1611/2998 cut-off events. For 70437/70439 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18929 event pairs, 411 based on Foata normal form. 4/2843 useless extension candidates. Maximal degree in co-relation 15618. Up to 2214 conditions per place. [2024-06-27 18:41:28,315 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 209 selfloop transitions, 79 changer transitions 0/295 dead transitions. [2024-06-27 18:41:28,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 295 transitions, 3907 flow [2024-06-27 18:41:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:41:28,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:41:28,316 INFO L175 Difference]: Start difference. First operand has 255 places, 260 transitions, 3010 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:41:28,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 295 transitions, 3907 flow [2024-06-27 18:41:28,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 295 transitions, 3636 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 18:41:28,689 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 2958 flow [2024-06-27 18:41:28,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2958, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2024-06-27 18:41:28,689 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 18:41:28,689 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 2958 flow [2024-06-27 18:41:28,689 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 18:41:28,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:28,690 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 18:41:28,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:41:28,690 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:28,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -120425051, now seen corresponding path program 11 times [2024-06-27 18:41:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:28,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828583570] [2024-06-27 18:41:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:29,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:29,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:29,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828583570] [2024-06-27 18:41:29,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828583570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:29,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:29,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:29,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916751145] [2024-06-27 18:41:29,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:29,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:29,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 2958 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 18:41:29,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:29,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:29,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:29,994 INFO L124 PetriNetUnfolderBase]: 1608/2993 cut-off events. [2024-06-27 18:41:29,994 INFO L125 PetriNetUnfolderBase]: For 64291/64293 co-relation queries the response was YES. [2024-06-27 18:41:30,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15383 conditions, 2993 events. 1608/2993 cut-off events. For 64291/64293 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18890 event pairs, 422 based on Foata normal form. 4/2836 useless extension candidates. Maximal degree in co-relation 15265. Up to 2304 conditions per place. [2024-06-27 18:41:30,029 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 203 selfloop transitions, 79 changer transitions 0/289 dead transitions. [2024-06-27 18:41:30,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 289 transitions, 3621 flow [2024-06-27 18:41:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:41:30,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:41:30,031 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 2958 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:41:30,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 289 transitions, 3621 flow [2024-06-27 18:41:30,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 289 transitions, 3503 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:30,340 INFO L231 Difference]: Finished difference. Result has 257 places, 263 transitions, 3002 flow [2024-06-27 18:41:30,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3002, PETRI_PLACES=257, PETRI_TRANSITIONS=263} [2024-06-27 18:41:30,341 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 18:41:30,341 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 263 transitions, 3002 flow [2024-06-27 18:41:30,341 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 18:41:30,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:30,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:30,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:41:30,341 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:30,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash -115783235, now seen corresponding path program 6 times [2024-06-27 18:41:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:30,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275741058] [2024-06-27 18:41:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:30,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:31,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275741058] [2024-06-27 18:41:31,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275741058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:31,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:31,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196085179] [2024-06-27 18:41:31,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:31,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:31,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:31,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:31,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 263 transitions, 3002 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 18:41:31,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:31,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:31,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:32,130 INFO L124 PetriNetUnfolderBase]: 1638/3035 cut-off events. [2024-06-27 18:41:32,131 INFO L125 PetriNetUnfolderBase]: For 71091/71093 co-relation queries the response was YES. [2024-06-27 18:41:32,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15915 conditions, 3035 events. 1638/3035 cut-off events. For 71091/71093 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19149 event pairs, 406 based on Foata normal form. 4/2871 useless extension candidates. Maximal degree in co-relation 15795. Up to 2333 conditions per place. [2024-06-27 18:41:32,161 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 219 selfloop transitions, 73 changer transitions 0/299 dead transitions. [2024-06-27 18:41:32,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 299 transitions, 3883 flow [2024-06-27 18:41:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:41:32,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:41:32,162 INFO L175 Difference]: Start difference. First operand has 257 places, 263 transitions, 3002 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:41:32,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 299 transitions, 3883 flow [2024-06-27 18:41:32,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 299 transitions, 3727 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:32,555 INFO L231 Difference]: Finished difference. Result has 260 places, 267 transitions, 3049 flow [2024-06-27 18:41:32,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3049, PETRI_PLACES=260, PETRI_TRANSITIONS=267} [2024-06-27 18:41:32,556 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:41:32,556 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 267 transitions, 3049 flow [2024-06-27 18:41:32,556 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 18:41:32,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:32,556 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 18:41:32,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:41:32,557 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:32,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:32,557 INFO L85 PathProgramCache]: Analyzing trace with hash 50272729, now seen corresponding path program 12 times [2024-06-27 18:41:32,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48014697] [2024-06-27 18:41:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48014697] [2024-06-27 18:41:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48014697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:33,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:33,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:33,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042630898] [2024-06-27 18:41:33,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:33,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 267 transitions, 3049 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 18:41:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:33,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:34,280 INFO L124 PetriNetUnfolderBase]: 1735/3229 cut-off events. [2024-06-27 18:41:34,280 INFO L125 PetriNetUnfolderBase]: For 79578/79578 co-relation queries the response was YES. [2024-06-27 18:41:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17084 conditions, 3229 events. 1735/3229 cut-off events. For 79578/79578 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20700 event pairs, 443 based on Foata normal form. 2/3054 useless extension candidates. Maximal degree in co-relation 16963. Up to 2401 conditions per place. [2024-06-27 18:41:34,314 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 221 selfloop transitions, 84 changer transitions 0/312 dead transitions. [2024-06-27 18:41:34,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 312 transitions, 4123 flow [2024-06-27 18:41:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:41:34,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:41:34,316 INFO L175 Difference]: Start difference. First operand has 260 places, 267 transitions, 3049 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:41:34,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 312 transitions, 4123 flow [2024-06-27 18:41:34,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 312 transitions, 4016 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:34,790 INFO L231 Difference]: Finished difference. Result has 265 places, 276 transitions, 3270 flow [2024-06-27 18:41:34,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2942, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3270, PETRI_PLACES=265, PETRI_TRANSITIONS=276} [2024-06-27 18:41:34,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-27 18:41:34,791 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 276 transitions, 3270 flow [2024-06-27 18:41:34,791 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 18:41:34,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:34,791 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 18:41:34,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:41:34,792 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:34,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:34,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1068120411, now seen corresponding path program 13 times [2024-06-27 18:41:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:34,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417253410] [2024-06-27 18:41:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:34,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:35,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:35,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417253410] [2024-06-27 18:41:35,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417253410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:35,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:35,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:35,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227620990] [2024-06-27 18:41:35,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:35,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:35,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:35,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:35,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:35,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 276 transitions, 3270 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 18:41:35,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:35,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:35,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:36,516 INFO L124 PetriNetUnfolderBase]: 1751/3253 cut-off events. [2024-06-27 18:41:36,517 INFO L125 PetriNetUnfolderBase]: For 82047/82049 co-relation queries the response was YES. [2024-06-27 18:41:36,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17561 conditions, 3253 events. 1751/3253 cut-off events. For 82047/82049 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20852 event pairs, 449 based on Foata normal form. 4/3077 useless extension candidates. Maximal degree in co-relation 17437. Up to 2728 conditions per place. [2024-06-27 18:41:36,545 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 250 selfloop transitions, 49 changer transitions 0/306 dead transitions. [2024-06-27 18:41:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 306 transitions, 3994 flow [2024-06-27 18:41:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:41:36,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:41:36,547 INFO L175 Difference]: Start difference. First operand has 265 places, 276 transitions, 3270 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:41:36,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 306 transitions, 3994 flow [2024-06-27 18:41:37,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 306 transitions, 3919 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:37,059 INFO L231 Difference]: Finished difference. Result has 271 places, 278 transitions, 3331 flow [2024-06-27 18:41:37,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3195, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3331, PETRI_PLACES=271, PETRI_TRANSITIONS=278} [2024-06-27 18:41:37,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 18:41:37,061 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 278 transitions, 3331 flow [2024-06-27 18:41:37,061 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 18:41:37,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:37,061 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 18:41:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:41:37,061 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:37,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1067942781, now seen corresponding path program 14 times [2024-06-27 18:41:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:37,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091212903] [2024-06-27 18:41:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091212903] [2024-06-27 18:41:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091212903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:37,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:37,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:37,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683372481] [2024-06-27 18:41:37,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:37,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:37,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:37,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:37,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:37,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:37,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 278 transitions, 3331 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 18:41:37,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:37,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:37,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:38,886 INFO L124 PetriNetUnfolderBase]: 1838/3428 cut-off events. [2024-06-27 18:41:38,886 INFO L125 PetriNetUnfolderBase]: For 91422/91424 co-relation queries the response was YES. [2024-06-27 18:41:38,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18797 conditions, 3428 events. 1838/3428 cut-off events. For 91422/91424 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 22405 event pairs, 450 based on Foata normal form. 4/3246 useless extension candidates. Maximal degree in co-relation 18671. Up to 2445 conditions per place. [2024-06-27 18:41:38,920 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 226 selfloop transitions, 93 changer transitions 0/326 dead transitions. [2024-06-27 18:41:38,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 326 transitions, 4474 flow [2024-06-27 18:41:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:38,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:41:38,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:41:38,922 INFO L175 Difference]: Start difference. First operand has 271 places, 278 transitions, 3331 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:41:38,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 326 transitions, 4474 flow [2024-06-27 18:41:39,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 326 transitions, 4355 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:39,519 INFO L231 Difference]: Finished difference. Result has 274 places, 287 transitions, 3591 flow [2024-06-27 18:41:39,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3591, PETRI_PLACES=274, PETRI_TRANSITIONS=287} [2024-06-27 18:41:39,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-27 18:41:39,519 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 287 transitions, 3591 flow [2024-06-27 18:41:39,520 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 18:41:39,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:39,520 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 18:41:39,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:41:39,520 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:39,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash 589172331, now seen corresponding path program 7 times [2024-06-27 18:41:39,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:39,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067712093] [2024-06-27 18:41:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:39,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:40,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067712093] [2024-06-27 18:41:40,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067712093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:40,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:40,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:40,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367075639] [2024-06-27 18:41:40,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:40,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:40,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:40,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 287 transitions, 3591 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 18:41:40,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:40,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:40,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:41,503 INFO L124 PetriNetUnfolderBase]: 1851/3447 cut-off events. [2024-06-27 18:41:41,503 INFO L125 PetriNetUnfolderBase]: For 95402/95404 co-relation queries the response was YES. [2024-06-27 18:41:41,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19288 conditions, 3447 events. 1851/3447 cut-off events. For 95402/95404 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22475 event pairs, 459 based on Foata normal form. 4/3255 useless extension candidates. Maximal degree in co-relation 19160. Up to 2351 conditions per place. [2024-06-27 18:41:41,539 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 213 selfloop transitions, 107 changer transitions 0/327 dead transitions. [2024-06-27 18:41:41,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 327 transitions, 4708 flow [2024-06-27 18:41:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-27 18:41:41,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-27 18:41:41,540 INFO L175 Difference]: Start difference. First operand has 274 places, 287 transitions, 3591 flow. Second operand 12 states and 195 transitions. [2024-06-27 18:41:41,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 327 transitions, 4708 flow [2024-06-27 18:41:42,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 327 transitions, 4605 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:42,245 INFO L231 Difference]: Finished difference. Result has 282 places, 291 transitions, 3780 flow [2024-06-27 18:41:42,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3492, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3780, PETRI_PLACES=282, PETRI_TRANSITIONS=291} [2024-06-27 18:41:42,245 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 18:41:42,245 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 291 transitions, 3780 flow [2024-06-27 18:41:42,245 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 18:41:42,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:42,246 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 18:41:42,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:41:42,246 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:42,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:42,246 INFO L85 PathProgramCache]: Analyzing trace with hash 589351821, now seen corresponding path program 8 times [2024-06-27 18:41:42,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:42,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459356091] [2024-06-27 18:41:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:42,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:43,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459356091] [2024-06-27 18:41:43,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459356091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:43,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:43,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:43,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652110350] [2024-06-27 18:41:43,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:43,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:43,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:43,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:43,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:43,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 291 transitions, 3780 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 18:41:43,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:43,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:43,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:44,260 INFO L124 PetriNetUnfolderBase]: 1847/3441 cut-off events. [2024-06-27 18:41:44,261 INFO L125 PetriNetUnfolderBase]: For 88888/88890 co-relation queries the response was YES. [2024-06-27 18:41:44,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19451 conditions, 3441 events. 1847/3441 cut-off events. For 88888/88890 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 22452 event pairs, 459 based on Foata normal form. 4/3249 useless extension candidates. Maximal degree in co-relation 19321. Up to 2348 conditions per place. [2024-06-27 18:41:44,294 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 209 selfloop transitions, 104 changer transitions 0/320 dead transitions. [2024-06-27 18:41:44,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 320 transitions, 4651 flow [2024-06-27 18:41:44,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:44,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:41:44,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-27 18:41:44,295 INFO L175 Difference]: Start difference. First operand has 282 places, 291 transitions, 3780 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:41:44,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 320 transitions, 4651 flow [2024-06-27 18:41:44,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 320 transitions, 4425 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:44,765 INFO L231 Difference]: Finished difference. Result has 284 places, 291 transitions, 3767 flow [2024-06-27 18:41:44,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3767, PETRI_PLACES=284, PETRI_TRANSITIONS=291} [2024-06-27 18:41:44,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-27 18:41:44,766 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 291 transitions, 3767 flow [2024-06-27 18:41:44,766 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 18:41:44,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:44,766 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 18:41:44,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:41:44,767 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:44,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -115956401, now seen corresponding path program 15 times [2024-06-27 18:41:44,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:44,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256720071] [2024-06-27 18:41:44,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:44,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256720071] [2024-06-27 18:41:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256720071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:45,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:45,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:45,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902506595] [2024-06-27 18:41:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:45,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:45,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:45,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 291 transitions, 3767 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 18:41:45,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:45,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:45,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:46,337 INFO L124 PetriNetUnfolderBase]: 1888/3535 cut-off events. [2024-06-27 18:41:46,337 INFO L125 PetriNetUnfolderBase]: For 97845/97847 co-relation queries the response was YES. [2024-06-27 18:41:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19678 conditions, 3535 events. 1888/3535 cut-off events. For 97845/97847 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 23315 event pairs, 472 based on Foata normal form. 8/3341 useless extension candidates. Maximal degree in co-relation 19547. Up to 2813 conditions per place. [2024-06-27 18:41:46,377 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 77 changer transitions 0/324 dead transitions. [2024-06-27 18:41:46,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 324 transitions, 4561 flow [2024-06-27 18:41:46,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:46,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:41:46,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:41:46,378 INFO L175 Difference]: Start difference. First operand has 284 places, 291 transitions, 3767 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:41:46,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 324 transitions, 4561 flow [2024-06-27 18:41:46,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 324 transitions, 4340 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:46,817 INFO L231 Difference]: Finished difference. Result has 284 places, 294 transitions, 3757 flow [2024-06-27 18:41:46,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3757, PETRI_PLACES=284, PETRI_TRANSITIONS=294} [2024-06-27 18:41:46,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-27 18:41:46,818 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 294 transitions, 3757 flow [2024-06-27 18:41:46,818 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 18:41:46,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:46,818 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 18:41:46,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:41:46,818 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:46,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -374133785, now seen corresponding path program 9 times [2024-06-27 18:41:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:46,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380819788] [2024-06-27 18:41:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:47,739 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 18:41:47,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:47,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380819788] [2024-06-27 18:41:47,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380819788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:47,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:47,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:47,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169854398] [2024-06-27 18:41:47,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:47,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:47,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:47,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:47,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:47,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:47,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 294 transitions, 3757 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 18:41:47,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:47,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:47,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:48,786 INFO L124 PetriNetUnfolderBase]: 1918/3583 cut-off events. [2024-06-27 18:41:48,786 INFO L125 PetriNetUnfolderBase]: For 93190/93190 co-relation queries the response was YES. [2024-06-27 18:41:48,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20019 conditions, 3583 events. 1918/3583 cut-off events. For 93190/93190 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23619 event pairs, 482 based on Foata normal form. 2/3375 useless extension candidates. Maximal degree in co-relation 19887. Up to 2450 conditions per place. [2024-06-27 18:41:48,829 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 217 selfloop transitions, 110 changer transitions 0/334 dead transitions. [2024-06-27 18:41:48,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 334 transitions, 4923 flow [2024-06-27 18:41:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:48,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:41:48,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 18:41:48,830 INFO L175 Difference]: Start difference. First operand has 284 places, 294 transitions, 3757 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:41:48,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 334 transitions, 4923 flow [2024-06-27 18:41:49,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 334 transitions, 4761 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:49,368 INFO L231 Difference]: Finished difference. Result has 290 places, 300 transitions, 3927 flow [2024-06-27 18:41:49,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3599, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3927, PETRI_PLACES=290, PETRI_TRANSITIONS=300} [2024-06-27 18:41:49,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 18:41:49,368 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 300 transitions, 3927 flow [2024-06-27 18:41:49,369 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 18:41:49,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:49,369 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 18:41:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:41:49,369 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:49,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash 755579091, now seen corresponding path program 10 times [2024-06-27 18:41:49,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:49,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173267811] [2024-06-27 18:41:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:50,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173267811] [2024-06-27 18:41:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173267811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:50,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:50,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:50,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604925906] [2024-06-27 18:41:50,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:50,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:50,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:50,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:50,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:50,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 300 transitions, 3927 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 18:41:50,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:50,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:50,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:51,255 INFO L124 PetriNetUnfolderBase]: 1948/3625 cut-off events. [2024-06-27 18:41:51,255 INFO L125 PetriNetUnfolderBase]: For 102495/102498 co-relation queries the response was YES. [2024-06-27 18:41:51,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20658 conditions, 3625 events. 1948/3625 cut-off events. For 102495/102498 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 23854 event pairs, 462 based on Foata normal form. 5/3414 useless extension candidates. Maximal degree in co-relation 20524. Up to 2857 conditions per place. [2024-06-27 18:41:51,295 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 66 changer transitions 0/336 dead transitions. [2024-06-27 18:41:51,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 336 transitions, 4913 flow [2024-06-27 18:41:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:41:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:41:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:41:51,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 18:41:51,296 INFO L175 Difference]: Start difference. First operand has 290 places, 300 transitions, 3927 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:41:51,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 336 transitions, 4913 flow [2024-06-27 18:41:51,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 336 transitions, 4655 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:51,920 INFO L231 Difference]: Finished difference. Result has 293 places, 304 transitions, 3878 flow [2024-06-27 18:41:51,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3878, PETRI_PLACES=293, PETRI_TRANSITIONS=304} [2024-06-27 18:41:51,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 18:41:51,921 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 304 transitions, 3878 flow [2024-06-27 18:41:51,921 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 18:41:51,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:51,921 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 18:41:51,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:41:51,921 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:51,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:51,922 INFO L85 PathProgramCache]: Analyzing trace with hash 50450359, now seen corresponding path program 16 times [2024-06-27 18:41:51,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:51,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219914079] [2024-06-27 18:41:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:51,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:52,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:52,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219914079] [2024-06-27 18:41:52,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219914079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:52,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:52,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:52,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177171736] [2024-06-27 18:41:52,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:52,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:52,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:52,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:52,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:52,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:52,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 304 transitions, 3878 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 18:41:52,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:52,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:52,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:53,797 INFO L124 PetriNetUnfolderBase]: 1964/3654 cut-off events. [2024-06-27 18:41:53,797 INFO L125 PetriNetUnfolderBase]: For 103812/103815 co-relation queries the response was YES. [2024-06-27 18:41:53,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20534 conditions, 3654 events. 1964/3654 cut-off events. For 103812/103815 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24085 event pairs, 486 based on Foata normal form. 5/3443 useless extension candidates. Maximal degree in co-relation 20399. Up to 3084 conditions per place. [2024-06-27 18:41:53,842 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 280 selfloop transitions, 44 changer transitions 0/331 dead transitions. [2024-06-27 18:41:53,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 331 transitions, 4644 flow [2024-06-27 18:41:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:53,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:41:53,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:41:53,843 INFO L175 Difference]: Start difference. First operand has 293 places, 304 transitions, 3878 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:41:53,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 331 transitions, 4644 flow [2024-06-27 18:41:54,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 331 transitions, 4555 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:54,462 INFO L231 Difference]: Finished difference. Result has 296 places, 306 transitions, 3918 flow [2024-06-27 18:41:54,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3789, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3918, PETRI_PLACES=296, PETRI_TRANSITIONS=306} [2024-06-27 18:41:54,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:41:54,465 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 306 transitions, 3918 flow [2024-06-27 18:41:54,465 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 18:41:54,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:54,465 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 18:41:54,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:41:54,465 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:54,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash 50457055, now seen corresponding path program 11 times [2024-06-27 18:41:54,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:54,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291371164] [2024-06-27 18:41:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:54,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:55,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:55,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291371164] [2024-06-27 18:41:55,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291371164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:55,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:55,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:55,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134518877] [2024-06-27 18:41:55,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:55,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:55,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 306 transitions, 3918 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 18:41:55,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:55,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:55,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:56,611 INFO L124 PetriNetUnfolderBase]: 1960/3648 cut-off events. [2024-06-27 18:41:56,612 INFO L125 PetriNetUnfolderBase]: For 99044/99047 co-relation queries the response was YES. [2024-06-27 18:41:56,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20506 conditions, 3648 events. 1960/3648 cut-off events. For 99044/99047 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24055 event pairs, 464 based on Foata normal form. 5/3436 useless extension candidates. Maximal degree in co-relation 20369. Up to 2897 conditions per place. [2024-06-27 18:41:56,654 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 265 selfloop transitions, 62 changer transitions 0/334 dead transitions. [2024-06-27 18:41:56,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 334 transitions, 4658 flow [2024-06-27 18:41:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:41:56,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:41:56,655 INFO L175 Difference]: Start difference. First operand has 296 places, 306 transitions, 3918 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:41:56,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 334 transitions, 4658 flow [2024-06-27 18:41:57,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 334 transitions, 4545 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:57,304 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 3934 flow [2024-06-27 18:41:57,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3934, PETRI_PLACES=298, PETRI_TRANSITIONS=306} [2024-06-27 18:41:57,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 18:41:57,304 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 3934 flow [2024-06-27 18:41:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:57,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:41:57,305 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:57,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash 56713165, now seen corresponding path program 12 times [2024-06-27 18:41:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922880751] [2024-06-27 18:41:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:58,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:58,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:58,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922880751] [2024-06-27 18:41:58,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922880751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:58,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:58,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:58,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99578898] [2024-06-27 18:41:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:58,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:58,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:58,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 3934 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 18:41:58,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:58,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:58,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:59,251 INFO L124 PetriNetUnfolderBase]: 1973/3669 cut-off events. [2024-06-27 18:41:59,251 INFO L125 PetriNetUnfolderBase]: For 101607/101607 co-relation queries the response was YES. [2024-06-27 18:41:59,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20698 conditions, 3669 events. 1973/3669 cut-off events. For 101607/101607 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24190 event pairs, 483 based on Foata normal form. 2/3451 useless extension candidates. Maximal degree in co-relation 20560. Up to 2514 conditions per place. [2024-06-27 18:41:59,289 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 204 selfloop transitions, 123 changer transitions 0/334 dead transitions. [2024-06-27 18:41:59,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 334 transitions, 4859 flow [2024-06-27 18:41:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:41:59,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:41:59,290 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 3934 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:41:59,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 334 transitions, 4859 flow [2024-06-27 18:41:59,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 334 transitions, 4730 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:59,918 INFO L231 Difference]: Finished difference. Result has 299 places, 308 transitions, 4084 flow [2024-06-27 18:41:59,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4084, PETRI_PLACES=299, PETRI_TRANSITIONS=308} [2024-06-27 18:41:59,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:41:59,918 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 308 transitions, 4084 flow [2024-06-27 18:41:59,919 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 18:41:59,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:59,919 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 18:41:59,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:41:59,919 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:59,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:59,919 INFO L85 PathProgramCache]: Analyzing trace with hash 56706469, now seen corresponding path program 17 times [2024-06-27 18:41:59,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:59,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173344954] [2024-06-27 18:41:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:00,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:00,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:00,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173344954] [2024-06-27 18:42:00,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173344954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:00,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:00,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:00,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941596729] [2024-06-27 18:42:00,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:00,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:00,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:00,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 308 transitions, 4084 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 18:42:00,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:00,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:00,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,806 INFO L124 PetriNetUnfolderBase]: 1970/3662 cut-off events. [2024-06-27 18:42:01,807 INFO L125 PetriNetUnfolderBase]: For 96631/96634 co-relation queries the response was YES. [2024-06-27 18:42:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20808 conditions, 3662 events. 1970/3662 cut-off events. For 96631/96634 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24145 event pairs, 487 based on Foata normal form. 5/3448 useless extension candidates. Maximal degree in co-relation 20669. Up to 3092 conditions per place. [2024-06-27 18:42:01,847 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 279 selfloop transitions, 48 changer transitions 0/334 dead transitions. [2024-06-27 18:42:01,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 334 transitions, 4855 flow [2024-06-27 18:42:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:42:01,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:42:01,860 INFO L175 Difference]: Start difference. First operand has 299 places, 308 transitions, 4084 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:42:01,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 334 transitions, 4855 flow [2024-06-27 18:42:02,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 334 transitions, 4671 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:02,495 INFO L231 Difference]: Finished difference. Result has 302 places, 310 transitions, 4041 flow [2024-06-27 18:42:02,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4041, PETRI_PLACES=302, PETRI_TRANSITIONS=310} [2024-06-27 18:42:02,495 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-27 18:42:02,495 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 310 transitions, 4041 flow [2024-06-27 18:42:02,496 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 18:42:02,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:02,496 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 18:42:02,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:42:02,496 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:02,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash 56952733, now seen corresponding path program 1 times [2024-06-27 18:42:02,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:02,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292030385] [2024-06-27 18:42:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:03,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:03,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292030385] [2024-06-27 18:42:03,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292030385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:03,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:03,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:03,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606436746] [2024-06-27 18:42:03,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:03,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:03,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:03,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 310 transitions, 4041 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 18:42:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:03,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:03,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:04,667 INFO L124 PetriNetUnfolderBase]: 2070/3850 cut-off events. [2024-06-27 18:42:04,667 INFO L125 PetriNetUnfolderBase]: For 145325/145331 co-relation queries the response was YES. [2024-06-27 18:42:04,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21247 conditions, 3850 events. 2070/3850 cut-off events. For 145325/145331 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25671 event pairs, 501 based on Foata normal form. 20/3652 useless extension candidates. Maximal degree in co-relation 21107. Up to 2917 conditions per place. [2024-06-27 18:42:04,715 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 279 selfloop transitions, 62 changer transitions 0/348 dead transitions. [2024-06-27 18:42:04,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 348 transitions, 4883 flow [2024-06-27 18:42:04,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:42:04,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:42:04,717 INFO L175 Difference]: Start difference. First operand has 302 places, 310 transitions, 4041 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:42:04,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 348 transitions, 4883 flow [2024-06-27 18:42:05,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 348 transitions, 4766 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:05,509 INFO L231 Difference]: Finished difference. Result has 305 places, 312 transitions, 4091 flow [2024-06-27 18:42:05,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3924, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4091, PETRI_PLACES=305, PETRI_TRANSITIONS=312} [2024-06-27 18:42:05,510 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 18:42:05,510 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 312 transitions, 4091 flow [2024-06-27 18:42:05,510 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 18:42:05,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:05,510 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 18:42:05,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:42:05,511 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:05,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash 56943805, now seen corresponding path program 13 times [2024-06-27 18:42:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244609300] [2024-06-27 18:42:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:06,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:06,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244609300] [2024-06-27 18:42:06,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244609300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:06,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:06,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792100134] [2024-06-27 18:42:06,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:06,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:06,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:06,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 312 transitions, 4091 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 18:42:06,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:06,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:06,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:07,793 INFO L124 PetriNetUnfolderBase]: 2083/3872 cut-off events. [2024-06-27 18:42:07,793 INFO L125 PetriNetUnfolderBase]: For 103205/103205 co-relation queries the response was YES. [2024-06-27 18:42:07,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21557 conditions, 3872 events. 2083/3872 cut-off events. For 103205/103205 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25833 event pairs, 512 based on Foata normal form. 2/3649 useless extension candidates. Maximal degree in co-relation 21416. Up to 2705 conditions per place. [2024-06-27 18:42:07,839 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 202 selfloop transitions, 130 changer transitions 0/339 dead transitions. [2024-06-27 18:42:07,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 339 transitions, 5032 flow [2024-06-27 18:42:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:42:07,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 18:42:07,840 INFO L175 Difference]: Start difference. First operand has 305 places, 312 transitions, 4091 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:42:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 339 transitions, 5032 flow [2024-06-27 18:42:08,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 339 transitions, 4891 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:08,632 INFO L231 Difference]: Finished difference. Result has 306 places, 314 transitions, 4245 flow [2024-06-27 18:42:08,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3950, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4245, PETRI_PLACES=306, PETRI_TRANSITIONS=314} [2024-06-27 18:42:08,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-27 18:42:08,633 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 314 transitions, 4245 flow [2024-06-27 18:42:08,633 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 18:42:08,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:08,633 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 18:42:08,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:42:08,633 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:08,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash 56706655, now seen corresponding path program 14 times [2024-06-27 18:42:08,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:08,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365625168] [2024-06-27 18:42:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:08,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:09,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365625168] [2024-06-27 18:42:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365625168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043290527] [2024-06-27 18:42:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:09,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:09,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 314 transitions, 4245 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 18:42:09,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:09,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:10,672 INFO L124 PetriNetUnfolderBase]: 2079/3864 cut-off events. [2024-06-27 18:42:10,672 INFO L125 PetriNetUnfolderBase]: For 97209/97212 co-relation queries the response was YES. [2024-06-27 18:42:10,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21532 conditions, 3864 events. 2079/3864 cut-off events. For 97209/97212 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25764 event pairs, 494 based on Foata normal form. 5/3644 useless extension candidates. Maximal degree in co-relation 21390. Up to 3080 conditions per place. [2024-06-27 18:42:10,717 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 71 changer transitions 0/341 dead transitions. [2024-06-27 18:42:10,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 341 transitions, 4994 flow [2024-06-27 18:42:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:42:10,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:42:10,718 INFO L175 Difference]: Start difference. First operand has 306 places, 314 transitions, 4245 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:42:10,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 341 transitions, 4994 flow [2024-06-27 18:42:11,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 341 transitions, 4804 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:11,467 INFO L231 Difference]: Finished difference. Result has 309 places, 314 transitions, 4202 flow [2024-06-27 18:42:11,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4055, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4202, PETRI_PLACES=309, PETRI_TRANSITIONS=314} [2024-06-27 18:42:11,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 18:42:11,468 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 314 transitions, 4202 flow [2024-06-27 18:42:11,468 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 18:42:11,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:11,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:11,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:42:11,469 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:11,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2134692475, now seen corresponding path program 2 times [2024-06-27 18:42:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672509688] [2024-06-27 18:42:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:12,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:12,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672509688] [2024-06-27 18:42:12,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672509688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:12,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:12,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:12,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581534415] [2024-06-27 18:42:12,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:12,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:12,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:12,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:12,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:12,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 314 transitions, 4202 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 18:42:12,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:12,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:13,445 INFO L124 PetriNetUnfolderBase]: 2099/3909 cut-off events. [2024-06-27 18:42:13,445 INFO L125 PetriNetUnfolderBase]: For 99643/99643 co-relation queries the response was YES. [2024-06-27 18:42:13,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21521 conditions, 3909 events. 2099/3909 cut-off events. For 99643/99643 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 26202 event pairs, 573 based on Foata normal form. 2/3684 useless extension candidates. Maximal degree in co-relation 21378. Up to 3443 conditions per place. [2024-06-27 18:42:13,495 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 304 selfloop transitions, 29 changer transitions 0/340 dead transitions. [2024-06-27 18:42:13,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 340 transitions, 4978 flow [2024-06-27 18:42:13,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:42:13,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:42:13,497 INFO L175 Difference]: Start difference. First operand has 309 places, 314 transitions, 4202 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:42:13,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 340 transitions, 4978 flow [2024-06-27 18:42:14,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 340 transitions, 4623 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 18:42:14,292 INFO L231 Difference]: Finished difference. Result has 308 places, 315 transitions, 3923 flow [2024-06-27 18:42:14,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3847, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3923, PETRI_PLACES=308, PETRI_TRANSITIONS=315} [2024-06-27 18:42:14,292 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-27 18:42:14,293 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 315 transitions, 3923 flow [2024-06-27 18:42:14,293 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 18:42:14,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:14,293 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 18:42:14,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:42:14,293 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:14,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1735237317, now seen corresponding path program 3 times [2024-06-27 18:42:14,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:14,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801570176] [2024-06-27 18:42:14,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:15,349 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 18:42:15,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:15,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801570176] [2024-06-27 18:42:15,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801570176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:15,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:15,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:15,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961838517] [2024-06-27 18:42:15,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:15,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:15,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:15,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:15,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 315 transitions, 3923 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 18:42:15,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:15,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:15,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:16,381 INFO L124 PetriNetUnfolderBase]: 2119/3951 cut-off events. [2024-06-27 18:42:16,382 INFO L125 PetriNetUnfolderBase]: For 99124/99124 co-relation queries the response was YES. [2024-06-27 18:42:16,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21161 conditions, 3951 events. 2119/3951 cut-off events. For 99124/99124 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26582 event pairs, 589 based on Foata normal form. 2/3724 useless extension candidates. Maximal degree in co-relation 21018. Up to 3542 conditions per place. [2024-06-27 18:42:16,433 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 316 selfloop transitions, 16 changer transitions 0/339 dead transitions. [2024-06-27 18:42:16,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 339 transitions, 4691 flow [2024-06-27 18:42:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 18:42:16,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864864864864865 [2024-06-27 18:42:16,434 INFO L175 Difference]: Start difference. First operand has 308 places, 315 transitions, 3923 flow. Second operand 10 states and 143 transitions. [2024-06-27 18:42:16,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 339 transitions, 4691 flow [2024-06-27 18:42:17,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 339 transitions, 4627 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:17,203 INFO L231 Difference]: Finished difference. Result has 310 places, 316 transitions, 3911 flow [2024-06-27 18:42:17,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3859, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3911, PETRI_PLACES=310, PETRI_TRANSITIONS=316} [2024-06-27 18:42:17,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 18:42:17,204 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 316 transitions, 3911 flow [2024-06-27 18:42:17,204 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 18:42:17,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:17,204 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 18:42:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:42:17,204 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1195192091, now seen corresponding path program 15 times [2024-06-27 18:42:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266265104] [2024-06-27 18:42:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:17,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:17,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266265104] [2024-06-27 18:42:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266265104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:17,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071651061] [2024-06-27 18:42:17,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:17,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:17,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:17,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:18,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:18,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 316 transitions, 3911 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 18:42:18,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:18,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:18,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:18,958 INFO L124 PetriNetUnfolderBase]: 2132/3971 cut-off events. [2024-06-27 18:42:18,958 INFO L125 PetriNetUnfolderBase]: For 100796/100796 co-relation queries the response was YES. [2024-06-27 18:42:18,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21211 conditions, 3971 events. 2132/3971 cut-off events. For 100796/100796 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26682 event pairs, 596 based on Foata normal form. 2/3742 useless extension candidates. Maximal degree in co-relation 21067. Up to 3514 conditions per place. [2024-06-27 18:42:19,004 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 305 selfloop transitions, 29 changer transitions 0/341 dead transitions. [2024-06-27 18:42:19,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 341 transitions, 4675 flow [2024-06-27 18:42:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:19,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:42:19,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 18:42:19,007 INFO L175 Difference]: Start difference. First operand has 310 places, 316 transitions, 3911 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:42:19,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 341 transitions, 4675 flow [2024-06-27 18:42:19,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 341 transitions, 4635 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:19,737 INFO L231 Difference]: Finished difference. Result has 312 places, 318 transitions, 3966 flow [2024-06-27 18:42:19,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3966, PETRI_PLACES=312, PETRI_TRANSITIONS=318} [2024-06-27 18:42:19,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 18:42:19,738 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 318 transitions, 3966 flow [2024-06-27 18:42:19,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:19,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:19,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:19,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:42:19,739 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:19,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash -802042793, now seen corresponding path program 16 times [2024-06-27 18:42:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415192979] [2024-06-27 18:42:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:19,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:20,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:20,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:20,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415192979] [2024-06-27 18:42:20,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415192979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:20,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:20,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:20,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79406052] [2024-06-27 18:42:20,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:20,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:20,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:20,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:20,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:20,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 318 transitions, 3966 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 18:42:20,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:20,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:20,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:21,614 INFO L124 PetriNetUnfolderBase]: 2145/3990 cut-off events. [2024-06-27 18:42:21,614 INFO L125 PetriNetUnfolderBase]: For 102922/102922 co-relation queries the response was YES. [2024-06-27 18:42:21,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21345 conditions, 3990 events. 2145/3990 cut-off events. For 102922/102922 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 26792 event pairs, 591 based on Foata normal form. 2/3757 useless extension candidates. Maximal degree in co-relation 21200. Up to 3578 conditions per place. [2024-06-27 18:42:21,665 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 315 selfloop transitions, 18 changer transitions 0/340 dead transitions. [2024-06-27 18:42:21,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 340 transitions, 4720 flow [2024-06-27 18:42:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-06-27 18:42:21,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3837837837837838 [2024-06-27 18:42:21,667 INFO L175 Difference]: Start difference. First operand has 312 places, 318 transitions, 3966 flow. Second operand 10 states and 142 transitions. [2024-06-27 18:42:21,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 340 transitions, 4720 flow [2024-06-27 18:42:22,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 340 transitions, 4651 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:22,719 INFO L231 Difference]: Finished difference. Result has 314 places, 320 transitions, 3974 flow [2024-06-27 18:42:22,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3974, PETRI_PLACES=314, PETRI_TRANSITIONS=320} [2024-06-27 18:42:22,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 18:42:22,720 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 320 transitions, 3974 flow [2024-06-27 18:42:22,720 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 18:42:22,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:22,720 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 18:42:22,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:42:22,720 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:22,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1341797301, now seen corresponding path program 17 times [2024-06-27 18:42:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:22,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367223614] [2024-06-27 18:42:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:23,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367223614] [2024-06-27 18:42:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367223614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:23,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971383257] [2024-06-27 18:42:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:23,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:23,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:23,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 320 transitions, 3974 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 18:42:23,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:23,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:23,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:24,803 INFO L124 PetriNetUnfolderBase]: 2158/4010 cut-off events. [2024-06-27 18:42:24,804 INFO L125 PetriNetUnfolderBase]: For 105218/105218 co-relation queries the response was YES. [2024-06-27 18:42:24,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21446 conditions, 4010 events. 2158/4010 cut-off events. For 105218/105218 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26907 event pairs, 589 based on Foata normal form. 2/3775 useless extension candidates. Maximal degree in co-relation 21300. Up to 3537 conditions per place. [2024-06-27 18:42:24,854 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 308 selfloop transitions, 33 changer transitions 0/348 dead transitions. [2024-06-27 18:42:24,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 348 transitions, 4768 flow [2024-06-27 18:42:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:42:24,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 18:42:24,855 INFO L175 Difference]: Start difference. First operand has 314 places, 320 transitions, 3974 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:42:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 348 transitions, 4768 flow [2024-06-27 18:42:25,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 348 transitions, 4717 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:25,614 INFO L231 Difference]: Finished difference. Result has 317 places, 322 transitions, 4034 flow [2024-06-27 18:42:25,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4034, PETRI_PLACES=317, PETRI_TRANSITIONS=322} [2024-06-27 18:42:25,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-27 18:42:25,615 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 322 transitions, 4034 flow [2024-06-27 18:42:25,615 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 18:42:25,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:25,616 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 18:42:25,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:42:25,616 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:25,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1341797487, now seen corresponding path program 18 times [2024-06-27 18:42:25,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:25,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238568831] [2024-06-27 18:42:25,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:26,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:26,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238568831] [2024-06-27 18:42:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238568831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005809625] [2024-06-27 18:42:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:26,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:26,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:26,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 322 transitions, 4034 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 18:42:26,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:26,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:26,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:27,412 INFO L124 PetriNetUnfolderBase]: 2174/4038 cut-off events. [2024-06-27 18:42:27,412 INFO L125 PetriNetUnfolderBase]: For 107567/107567 co-relation queries the response was YES. [2024-06-27 18:42:27,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21672 conditions, 4038 events. 2174/4038 cut-off events. For 107567/107567 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 27144 event pairs, 610 based on Foata normal form. 2/3804 useless extension candidates. Maximal degree in co-relation 21525. Up to 3623 conditions per place. [2024-06-27 18:42:27,465 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 314 selfloop transitions, 24 changer transitions 0/345 dead transitions. [2024-06-27 18:42:27,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 345 transitions, 4821 flow [2024-06-27 18:42:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:42:27,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 18:42:27,467 INFO L175 Difference]: Start difference. First operand has 317 places, 322 transitions, 4034 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:42:27,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 345 transitions, 4821 flow [2024-06-27 18:42:28,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 345 transitions, 4736 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:28,197 INFO L231 Difference]: Finished difference. Result has 318 places, 324 transitions, 4047 flow [2024-06-27 18:42:28,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4047, PETRI_PLACES=318, PETRI_TRANSITIONS=324} [2024-06-27 18:42:28,197 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-27 18:42:28,197 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 324 transitions, 4047 flow [2024-06-27 18:42:28,198 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 18:42:28,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:28,198 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 18:42:28,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:42:28,198 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:28,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1341970281, now seen corresponding path program 18 times [2024-06-27 18:42:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729687494] [2024-06-27 18:42:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729687494] [2024-06-27 18:42:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729687494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:29,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493554885] [2024-06-27 18:42:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:29,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:29,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:29,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:29,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 324 transitions, 4047 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 18:42:29,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:29,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:29,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:30,123 INFO L124 PetriNetUnfolderBase]: 2187/4052 cut-off events. [2024-06-27 18:42:30,124 INFO L125 PetriNetUnfolderBase]: For 109723/109725 co-relation queries the response was YES. [2024-06-27 18:42:30,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21793 conditions, 4052 events. 2187/4052 cut-off events. For 109723/109725 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 27200 event pairs, 503 based on Foata normal form. 4/3814 useless extension candidates. Maximal degree in co-relation 21645. Up to 3003 conditions per place. [2024-06-27 18:42:30,185 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 230 selfloop transitions, 120 changer transitions 0/357 dead transitions. [2024-06-27 18:42:30,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 357 transitions, 5076 flow [2024-06-27 18:42:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:30,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:42:30,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:42:30,187 INFO L175 Difference]: Start difference. First operand has 318 places, 324 transitions, 4047 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:42:30,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 357 transitions, 5076 flow [2024-06-27 18:42:30,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 357 transitions, 4995 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:30,912 INFO L231 Difference]: Finished difference. Result has 319 places, 326 transitions, 4257 flow [2024-06-27 18:42:30,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3966, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4257, PETRI_PLACES=319, PETRI_TRANSITIONS=326} [2024-06-27 18:42:30,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:42:30,913 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 326 transitions, 4257 flow [2024-06-27 18:42:30,913 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 18:42:30,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:30,913 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 18:42:30,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:42:30,913 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:30,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1341975117, now seen corresponding path program 19 times [2024-06-27 18:42:30,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:30,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359864453] [2024-06-27 18:42:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:30,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:31,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:31,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359864453] [2024-06-27 18:42:31,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359864453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:31,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:31,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:31,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454910875] [2024-06-27 18:42:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:31,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:31,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:31,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:31,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 326 transitions, 4257 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 18:42:31,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:31,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:31,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:32,590 INFO L124 PetriNetUnfolderBase]: 2207/4095 cut-off events. [2024-06-27 18:42:32,590 INFO L125 PetriNetUnfolderBase]: For 112445/112447 co-relation queries the response was YES. [2024-06-27 18:42:32,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22499 conditions, 4095 events. 2207/4095 cut-off events. For 112445/112447 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 27609 event pairs, 377 based on Foata normal form. 4/3873 useless extension candidates. Maximal degree in co-relation 22350. Up to 2859 conditions per place. [2024-06-27 18:42:32,641 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 259 selfloop transitions, 97 changer transitions 0/363 dead transitions. [2024-06-27 18:42:32,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 363 transitions, 5349 flow [2024-06-27 18:42:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:42:32,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:42:32,642 INFO L175 Difference]: Start difference. First operand has 319 places, 326 transitions, 4257 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:42:32,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 363 transitions, 5349 flow [2024-06-27 18:42:33,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 363 transitions, 5140 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:33,570 INFO L231 Difference]: Finished difference. Result has 320 places, 327 transitions, 4279 flow [2024-06-27 18:42:33,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4279, PETRI_PLACES=320, PETRI_TRANSITIONS=327} [2024-06-27 18:42:33,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-27 18:42:33,571 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 327 transitions, 4279 flow [2024-06-27 18:42:33,571 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 18:42:33,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:33,571 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 18:42:33,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:42:33,571 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:33,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:33,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1335295113, now seen corresponding path program 4 times [2024-06-27 18:42:33,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:33,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983689087] [2024-06-27 18:42:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:33,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:34,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983689087] [2024-06-27 18:42:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983689087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:34,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:34,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098820185] [2024-06-27 18:42:34,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:34,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:34,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 327 transitions, 4279 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 18:42:34,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:34,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:34,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:35,653 INFO L124 PetriNetUnfolderBase]: 2227/4141 cut-off events. [2024-06-27 18:42:35,653 INFO L125 PetriNetUnfolderBase]: For 113149/113149 co-relation queries the response was YES. [2024-06-27 18:42:35,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22769 conditions, 4141 events. 2227/4141 cut-off events. For 113149/113149 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 27974 event pairs, 611 based on Foata normal form. 2/3897 useless extension candidates. Maximal degree in co-relation 22621. Up to 3710 conditions per place. [2024-06-27 18:42:35,705 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 324 selfloop transitions, 20 changer transitions 0/351 dead transitions. [2024-06-27 18:42:35,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 351 transitions, 5076 flow [2024-06-27 18:42:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:35,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 18:42:35,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-27 18:42:35,706 INFO L175 Difference]: Start difference. First operand has 320 places, 327 transitions, 4279 flow. Second operand 10 states and 145 transitions. [2024-06-27 18:42:35,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 351 transitions, 5076 flow [2024-06-27 18:42:36,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 351 transitions, 4731 flow, removed 15 selfloop flow, removed 17 redundant places. [2024-06-27 18:42:36,557 INFO L231 Difference]: Finished difference. Result has 313 places, 328 transitions, 3996 flow [2024-06-27 18:42:36,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3934, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3996, PETRI_PLACES=313, PETRI_TRANSITIONS=328} [2024-06-27 18:42:36,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 18:42:36,558 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 328 transitions, 3996 flow [2024-06-27 18:42:36,558 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 18:42:36,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:36,558 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 18:42:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:42:36,559 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:36,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 270148215, now seen corresponding path program 19 times [2024-06-27 18:42:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:36,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198650950] [2024-06-27 18:42:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:37,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:37,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198650950] [2024-06-27 18:42:37,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198650950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:37,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:37,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973264261] [2024-06-27 18:42:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:37,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:37,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 328 transitions, 3996 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 18:42:37,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:37,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:38,603 INFO L124 PetriNetUnfolderBase]: 2257/4187 cut-off events. [2024-06-27 18:42:38,603 INFO L125 PetriNetUnfolderBase]: For 120515/120515 co-relation queries the response was YES. [2024-06-27 18:42:38,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22130 conditions, 4187 events. 2257/4187 cut-off events. For 120515/120515 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 28275 event pairs, 616 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 21991. Up to 3691 conditions per place. [2024-06-27 18:42:38,652 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 314 selfloop transitions, 33 changer transitions 0/354 dead transitions. [2024-06-27 18:42:38,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 354 transitions, 5023 flow [2024-06-27 18:42:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:42:38,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 18:42:38,653 INFO L175 Difference]: Start difference. First operand has 313 places, 328 transitions, 3996 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:42:38,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 354 transitions, 5023 flow [2024-06-27 18:42:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 354 transitions, 4973 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:39,571 INFO L231 Difference]: Finished difference. Result has 315 places, 332 transitions, 4101 flow [2024-06-27 18:42:39,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3946, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4101, PETRI_PLACES=315, PETRI_TRANSITIONS=332} [2024-06-27 18:42:39,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-27 18:42:39,572 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 332 transitions, 4101 flow [2024-06-27 18:42:39,572 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 18:42:39,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:39,572 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 18:42:39,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:42:39,572 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:39,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1335541377, now seen corresponding path program 20 times [2024-06-27 18:42:39,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:39,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211498715] [2024-06-27 18:42:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:40,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:40,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211498715] [2024-06-27 18:42:40,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211498715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:40,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:40,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:40,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231950789] [2024-06-27 18:42:40,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:40,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:40,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:40,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:40,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 332 transitions, 4101 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 18:42:40,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:40,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:40,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:41,359 INFO L124 PetriNetUnfolderBase]: 2273/4216 cut-off events. [2024-06-27 18:42:41,360 INFO L125 PetriNetUnfolderBase]: For 122962/122962 co-relation queries the response was YES. [2024-06-27 18:42:41,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22324 conditions, 4216 events. 2273/4216 cut-off events. For 122962/122962 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 28527 event pairs, 633 based on Foata normal form. 2/3967 useless extension candidates. Maximal degree in co-relation 22184. Up to 3786 conditions per place. [2024-06-27 18:42:41,411 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 25 changer transitions 0/353 dead transitions. [2024-06-27 18:42:41,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 353 transitions, 4899 flow [2024-06-27 18:42:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:41,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:42:41,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 18:42:41,413 INFO L175 Difference]: Start difference. First operand has 315 places, 332 transitions, 4101 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:42:41,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 353 transitions, 4899 flow [2024-06-27 18:42:42,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 353 transitions, 4832 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:42,271 INFO L231 Difference]: Finished difference. Result has 319 places, 334 transitions, 4138 flow [2024-06-27 18:42:42,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4034, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4138, PETRI_PLACES=319, PETRI_TRANSITIONS=334} [2024-06-27 18:42:42,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:42:42,272 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 334 transitions, 4138 flow [2024-06-27 18:42:42,272 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 18:42:42,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:42,272 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 18:42:42,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:42:42,273 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:42,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash -790635785, now seen corresponding path program 5 times [2024-06-27 18:42:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765007482] [2024-06-27 18:42:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765007482] [2024-06-27 18:42:43,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765007482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056391669] [2024-06-27 18:42:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:43,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:43,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:43,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 334 transitions, 4138 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 18:42:43,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:44,326 INFO L124 PetriNetUnfolderBase]: 2293/4256 cut-off events. [2024-06-27 18:42:44,326 INFO L125 PetriNetUnfolderBase]: For 126011/126011 co-relation queries the response was YES. [2024-06-27 18:42:44,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22616 conditions, 4256 events. 2293/4256 cut-off events. For 126011/126011 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 28833 event pairs, 610 based on Foata normal form. 2/4003 useless extension candidates. Maximal degree in co-relation 22474. Up to 3818 conditions per place. [2024-06-27 18:42:44,379 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 338 selfloop transitions, 16 changer transitions 0/361 dead transitions. [2024-06-27 18:42:44,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 361 transitions, 4974 flow [2024-06-27 18:42:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:42:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 18:42:44,380 INFO L175 Difference]: Start difference. First operand has 319 places, 334 transitions, 4138 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:42:44,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 361 transitions, 4974 flow [2024-06-27 18:42:45,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 361 transitions, 4887 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:45,268 INFO L231 Difference]: Finished difference. Result has 322 places, 337 transitions, 4124 flow [2024-06-27 18:42:45,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4124, PETRI_PLACES=322, PETRI_TRANSITIONS=337} [2024-06-27 18:42:45,268 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 18:42:45,268 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 337 transitions, 4124 flow [2024-06-27 18:42:45,269 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 18:42:45,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:45,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:45,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:42:45,269 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:45,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:45,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1201678841, now seen corresponding path program 20 times [2024-06-27 18:42:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:45,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748403960] [2024-06-27 18:42:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:46,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:46,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748403960] [2024-06-27 18:42:46,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748403960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:46,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:46,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:46,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70663228] [2024-06-27 18:42:46,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:46,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:46,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:46,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 337 transitions, 4124 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 18:42:46,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:46,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:46,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:47,330 INFO L124 PetriNetUnfolderBase]: 2306/4278 cut-off events. [2024-06-27 18:42:47,330 INFO L125 PetriNetUnfolderBase]: For 128740/128740 co-relation queries the response was YES. [2024-06-27 18:42:47,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22848 conditions, 4278 events. 2306/4278 cut-off events. For 128740/128740 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 29075 event pairs, 621 based on Foata normal form. 2/4023 useless extension candidates. Maximal degree in co-relation 22704. Up to 3798 conditions per place. [2024-06-27 18:42:47,380 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 31 changer transitions 0/359 dead transitions. [2024-06-27 18:42:47,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 359 transitions, 4923 flow [2024-06-27 18:42:47,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:47,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:42:47,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972972972972973 [2024-06-27 18:42:47,382 INFO L175 Difference]: Start difference. First operand has 322 places, 337 transitions, 4124 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:42:47,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 359 transitions, 4923 flow [2024-06-27 18:42:48,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 359 transitions, 4878 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:48,467 INFO L231 Difference]: Finished difference. Result has 325 places, 339 transitions, 4188 flow [2024-06-27 18:42:48,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4079, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4188, PETRI_PLACES=325, PETRI_TRANSITIONS=339} [2024-06-27 18:42:48,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 284 predicate places. [2024-06-27 18:42:48,468 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 339 transitions, 4188 flow [2024-06-27 18:42:48,468 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 18:42:48,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:48,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:48,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:42:48,469 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:48,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1113896151, now seen corresponding path program 21 times [2024-06-27 18:42:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50503352] [2024-06-27 18:42:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50503352] [2024-06-27 18:42:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50503352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:49,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:49,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901952153] [2024-06-27 18:42:49,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:49,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:49,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:49,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 339 transitions, 4188 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 18:42:49,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:49,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:49,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:50,402 INFO L124 PetriNetUnfolderBase]: 2319/4295 cut-off events. [2024-06-27 18:42:50,402 INFO L125 PetriNetUnfolderBase]: For 130501/130501 co-relation queries the response was YES. [2024-06-27 18:42:50,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22979 conditions, 4295 events. 2319/4295 cut-off events. For 130501/130501 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29099 event pairs, 624 based on Foata normal form. 2/4036 useless extension candidates. Maximal degree in co-relation 22834. Up to 3782 conditions per place. [2024-06-27 18:42:50,455 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 327 selfloop transitions, 32 changer transitions 0/366 dead transitions. [2024-06-27 18:42:50,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 366 transitions, 5218 flow [2024-06-27 18:42:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:42:50,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-27 18:42:50,456 INFO L175 Difference]: Start difference. First operand has 325 places, 339 transitions, 4188 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:42:50,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 366 transitions, 5218 flow [2024-06-27 18:42:51,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 366 transitions, 5137 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:51,498 INFO L231 Difference]: Finished difference. Result has 328 places, 341 transitions, 4220 flow [2024-06-27 18:42:51,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4107, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4220, PETRI_PLACES=328, PETRI_TRANSITIONS=341} [2024-06-27 18:42:51,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-27 18:42:51,499 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 341 transitions, 4220 flow [2024-06-27 18:42:51,499 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 18:42:51,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:51,499 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 18:42:51,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:42:51,499 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:51,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:51,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1964942491, now seen corresponding path program 21 times [2024-06-27 18:42:51,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:51,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249914495] [2024-06-27 18:42:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:52,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249914495] [2024-06-27 18:42:52,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249914495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:52,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:52,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759834974] [2024-06-27 18:42:52,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:52,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:52,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:52,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 341 transitions, 4220 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 18:42:52,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:52,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:52,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:53,521 INFO L124 PetriNetUnfolderBase]: 2316/4290 cut-off events. [2024-06-27 18:42:53,521 INFO L125 PetriNetUnfolderBase]: For 122097/122097 co-relation queries the response was YES. [2024-06-27 18:42:53,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22606 conditions, 4290 events. 2316/4290 cut-off events. For 122097/122097 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29104 event pairs, 639 based on Foata normal form. 2/4032 useless extension candidates. Maximal degree in co-relation 22460. Up to 3873 conditions per place. [2024-06-27 18:42:53,570 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 336 selfloop transitions, 19 changer transitions 0/362 dead transitions. [2024-06-27 18:42:53,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 362 transitions, 5039 flow [2024-06-27 18:42:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 18:42:53,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36855036855036855 [2024-06-27 18:42:53,571 INFO L175 Difference]: Start difference. First operand has 328 places, 341 transitions, 4220 flow. Second operand 11 states and 150 transitions. [2024-06-27 18:42:53,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 362 transitions, 5039 flow [2024-06-27 18:42:54,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 362 transitions, 4784 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-27 18:42:54,567 INFO L231 Difference]: Finished difference. Result has 327 places, 343 transitions, 4061 flow [2024-06-27 18:42:54,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3969, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4061, PETRI_PLACES=327, PETRI_TRANSITIONS=343} [2024-06-27 18:42:54,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-27 18:42:54,567 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 343 transitions, 4061 flow [2024-06-27 18:42:54,567 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 18:42:54,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:54,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:42:54,568 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:54,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:54,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1335534681, now seen corresponding path program 22 times [2024-06-27 18:42:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:54,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173090388] [2024-06-27 18:42:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:55,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173090388] [2024-06-27 18:42:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173090388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:55,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55416269] [2024-06-27 18:42:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:55,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:55,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:55,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 343 transitions, 4061 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 18:42:55,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:55,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:55,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:56,519 INFO L124 PetriNetUnfolderBase]: 2312/4286 cut-off events. [2024-06-27 18:42:56,519 INFO L125 PetriNetUnfolderBase]: For 113004/113004 co-relation queries the response was YES. [2024-06-27 18:42:56,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21779 conditions, 4286 events. 2312/4286 cut-off events. For 113004/113004 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29066 event pairs, 622 based on Foata normal form. 2/4028 useless extension candidates. Maximal degree in co-relation 21635. Up to 3806 conditions per place. [2024-06-27 18:42:56,569 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 327 selfloop transitions, 30 changer transitions 0/364 dead transitions. [2024-06-27 18:42:56,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 364 transitions, 4834 flow [2024-06-27 18:42:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:42:56,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 18:42:56,570 INFO L175 Difference]: Start difference. First operand has 327 places, 343 transitions, 4061 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:42:56,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 364 transitions, 4834 flow [2024-06-27 18:42:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 364 transitions, 4743 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:57,262 INFO L231 Difference]: Finished difference. Result has 328 places, 343 transitions, 4035 flow [2024-06-27 18:42:57,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4035, PETRI_PLACES=328, PETRI_TRANSITIONS=343} [2024-06-27 18:42:57,263 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-27 18:42:57,263 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 343 transitions, 4035 flow [2024-06-27 18:42:57,263 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 18:42:57,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:57,263 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 18:42:57,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:42:57,263 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:57,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1114839365, now seen corresponding path program 6 times [2024-06-27 18:42:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:57,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250190178] [2024-06-27 18:42:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:57,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:58,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250190178] [2024-06-27 18:42:58,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250190178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:58,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:58,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:58,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123897364] [2024-06-27 18:42:58,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:58,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:58,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:58,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:58,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:58,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:58,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 343 transitions, 4035 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 18:42:58,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:58,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:58,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:59,360 INFO L124 PetriNetUnfolderBase]: 2316/4297 cut-off events. [2024-06-27 18:42:59,361 INFO L125 PetriNetUnfolderBase]: For 103904/103904 co-relation queries the response was YES. [2024-06-27 18:42:59,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21577 conditions, 4297 events. 2316/4297 cut-off events. For 103904/103904 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29172 event pairs, 626 based on Foata normal form. 2/4036 useless extension candidates. Maximal degree in co-relation 21432. Up to 3846 conditions per place. [2024-06-27 18:42:59,413 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 342 selfloop transitions, 19 changer transitions 0/368 dead transitions. [2024-06-27 18:42:59,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 368 transitions, 4875 flow [2024-06-27 18:42:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 18:42:59,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945945945945946 [2024-06-27 18:42:59,414 INFO L175 Difference]: Start difference. First operand has 328 places, 343 transitions, 4035 flow. Second operand 10 states and 146 transitions. [2024-06-27 18:42:59,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 368 transitions, 4875 flow [2024-06-27 18:43:00,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 368 transitions, 4803 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:00,220 INFO L231 Difference]: Finished difference. Result has 329 places, 344 transitions, 4027 flow [2024-06-27 18:43:00,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4027, PETRI_PLACES=329, PETRI_TRANSITIONS=344} [2024-06-27 18:43:00,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 18:43:00,221 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 344 transitions, 4027 flow [2024-06-27 18:43:00,221 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 18:43:00,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:00,221 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 18:43:00,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:43:00,222 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:00,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:00,222 INFO L85 PathProgramCache]: Analyzing trace with hash 490610473, now seen corresponding path program 23 times [2024-06-27 18:43:00,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528892955] [2024-06-27 18:43:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:00,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:01,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:01,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528892955] [2024-06-27 18:43:01,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528892955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:01,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:01,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:01,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699713995] [2024-06-27 18:43:01,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:01,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:01,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:01,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:01,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:01,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 344 transitions, 4027 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 18:43:01,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:01,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:01,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:02,287 INFO L124 PetriNetUnfolderBase]: 2329/4317 cut-off events. [2024-06-27 18:43:02,287 INFO L125 PetriNetUnfolderBase]: For 105976/105976 co-relation queries the response was YES. [2024-06-27 18:43:02,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21676 conditions, 4317 events. 2329/4317 cut-off events. For 105976/105976 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29300 event pairs, 625 based on Foata normal form. 2/4053 useless extension candidates. Maximal degree in co-relation 21530. Up to 3835 conditions per place. [2024-06-27 18:43:02,330 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 26 changer transitions 0/367 dead transitions. [2024-06-27 18:43:02,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 4839 flow [2024-06-27 18:43:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 18:43:02,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945945945945946 [2024-06-27 18:43:02,332 INFO L175 Difference]: Start difference. First operand has 329 places, 344 transitions, 4027 flow. Second operand 10 states and 146 transitions. [2024-06-27 18:43:02,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 4839 flow [2024-06-27 18:43:03,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 367 transitions, 4787 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:03,042 INFO L231 Difference]: Finished difference. Result has 331 places, 346 transitions, 4070 flow [2024-06-27 18:43:03,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4070, PETRI_PLACES=331, PETRI_TRANSITIONS=346} [2024-06-27 18:43:03,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:43:03,043 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 346 transitions, 4070 flow [2024-06-27 18:43:03,043 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 18:43:03,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:03,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:03,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:43:03,043 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:03,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:03,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1113659001, now seen corresponding path program 24 times [2024-06-27 18:43:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:03,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397377926] [2024-06-27 18:43:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397377926] [2024-06-27 18:43:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397377926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:03,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:03,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786272949] [2024-06-27 18:43:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:03,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:03,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:03,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:04,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:04,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 346 transitions, 4070 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 18:43:04,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:04,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:04,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:05,121 INFO L124 PetriNetUnfolderBase]: 2325/4311 cut-off events. [2024-06-27 18:43:05,122 INFO L125 PetriNetUnfolderBase]: For 96009/96009 co-relation queries the response was YES. [2024-06-27 18:43:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21375 conditions, 4311 events. 2325/4311 cut-off events. For 96009/96009 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29240 event pairs, 624 based on Foata normal form. 2/4047 useless extension candidates. Maximal degree in co-relation 21228. Up to 3829 conditions per place. [2024-06-27 18:43:05,173 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 335 selfloop transitions, 25 changer transitions 0/367 dead transitions. [2024-06-27 18:43:05,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 367 transitions, 4848 flow [2024-06-27 18:43:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:43:05,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972972972972973 [2024-06-27 18:43:05,174 INFO L175 Difference]: Start difference. First operand has 331 places, 346 transitions, 4070 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:43:05,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 367 transitions, 4848 flow [2024-06-27 18:43:05,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 367 transitions, 4769 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:05,929 INFO L231 Difference]: Finished difference. Result has 333 places, 346 transitions, 4046 flow [2024-06-27 18:43:05,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4046, PETRI_PLACES=333, PETRI_TRANSITIONS=346} [2024-06-27 18:43:05,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-27 18:43:05,930 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 346 transitions, 4046 flow [2024-06-27 18:43:05,930 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 18:43:05,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:05,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:05,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:43:05,931 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:05,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1230503578, now seen corresponding path program 1 times [2024-06-27 18:43:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:05,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157588184] [2024-06-27 18:43:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:05,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157588184] [2024-06-27 18:43:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157588184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744889626] [2024-06-27 18:43:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:06,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:06,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:06,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 346 transitions, 4046 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:06,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:06,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:08,116 INFO L124 PetriNetUnfolderBase]: 2476/4632 cut-off events. [2024-06-27 18:43:08,116 INFO L125 PetriNetUnfolderBase]: For 165986/165989 co-relation queries the response was YES. [2024-06-27 18:43:08,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23001 conditions, 4632 events. 2476/4632 cut-off events. For 165986/165989 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 32124 event pairs, 575 based on Foata normal form. 11/4371 useless extension candidates. Maximal degree in co-relation 22853. Up to 2459 conditions per place. [2024-06-27 18:43:08,172 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 256 selfloop transitions, 140 changer transitions 0/403 dead transitions. [2024-06-27 18:43:08,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 403 transitions, 5324 flow [2024-06-27 18:43:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:43:08,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:43:08,173 INFO L175 Difference]: Start difference. First operand has 333 places, 346 transitions, 4046 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:43:08,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 403 transitions, 5324 flow [2024-06-27 18:43:09,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 403 transitions, 5195 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:43:09,039 INFO L231 Difference]: Finished difference. Result has 334 places, 346 transitions, 4200 flow [2024-06-27 18:43:09,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4200, PETRI_PLACES=334, PETRI_TRANSITIONS=346} [2024-06-27 18:43:09,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 18:43:09,039 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 346 transitions, 4200 flow [2024-06-27 18:43:09,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:09,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:09,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:09,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:43:09,040 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:09,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash 186213926, now seen corresponding path program 2 times [2024-06-27 18:43:09,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:09,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146301842] [2024-06-27 18:43:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:09,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:09,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146301842] [2024-06-27 18:43:09,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146301842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:09,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350704095] [2024-06-27 18:43:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:09,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:09,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:09,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 346 transitions, 4200 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:09,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:09,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:09,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:11,275 INFO L124 PetriNetUnfolderBase]: 2650/5023 cut-off events. [2024-06-27 18:43:11,275 INFO L125 PetriNetUnfolderBase]: For 229673/229676 co-relation queries the response was YES. [2024-06-27 18:43:11,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25738 conditions, 5023 events. 2650/5023 cut-off events. For 229673/229676 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 35856 event pairs, 706 based on Foata normal form. 11/4746 useless extension candidates. Maximal degree in co-relation 25590. Up to 3031 conditions per place. [2024-06-27 18:43:11,340 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 139 changer transitions 0/414 dead transitions. [2024-06-27 18:43:11,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 414 transitions, 5602 flow [2024-06-27 18:43:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:11,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:43:11,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:43:11,341 INFO L175 Difference]: Start difference. First operand has 334 places, 346 transitions, 4200 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:43:11,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 414 transitions, 5602 flow [2024-06-27 18:43:12,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 414 transitions, 5421 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:12,565 INFO L231 Difference]: Finished difference. Result has 337 places, 348 transitions, 4320 flow [2024-06-27 18:43:12,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4320, PETRI_PLACES=337, PETRI_TRANSITIONS=348} [2024-06-27 18:43:12,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-27 18:43:12,566 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 348 transitions, 4320 flow [2024-06-27 18:43:12,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:12,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:12,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:43:12,566 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:12,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:12,567 INFO L85 PathProgramCache]: Analyzing trace with hash 189938576, now seen corresponding path program 3 times [2024-06-27 18:43:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:12,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817028286] [2024-06-27 18:43:12,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:12,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:13,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817028286] [2024-06-27 18:43:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817028286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658415227] [2024-06-27 18:43:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:13,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:13,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:13,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 348 transitions, 4320 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:13,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:13,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:13,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:14,574 INFO L124 PetriNetUnfolderBase]: 2716/5227 cut-off events. [2024-06-27 18:43:14,574 INFO L125 PetriNetUnfolderBase]: For 259657/259657 co-relation queries the response was YES. [2024-06-27 18:43:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25625 conditions, 5227 events. 2716/5227 cut-off events. For 259657/259657 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37980 event pairs, 856 based on Foata normal form. 20/4931 useless extension candidates. Maximal degree in co-relation 25476. Up to 3404 conditions per place. [2024-06-27 18:43:14,641 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 244 selfloop transitions, 133 changer transitions 0/384 dead transitions. [2024-06-27 18:43:14,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 384 transitions, 5248 flow [2024-06-27 18:43:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:14,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:43:14,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:43:14,642 INFO L175 Difference]: Start difference. First operand has 337 places, 348 transitions, 4320 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:43:14,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 384 transitions, 5248 flow [2024-06-27 18:43:15,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 384 transitions, 4973 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:15,863 INFO L231 Difference]: Finished difference. Result has 339 places, 350 transitions, 4355 flow [2024-06-27 18:43:15,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4355, PETRI_PLACES=339, PETRI_TRANSITIONS=350} [2024-06-27 18:43:15,863 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-27 18:43:15,863 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 350 transitions, 4355 flow [2024-06-27 18:43:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:15,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:15,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:43:15,864 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:15,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:15,864 INFO L85 PathProgramCache]: Analyzing trace with hash 189788846, now seen corresponding path program 4 times [2024-06-27 18:43:15,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:15,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966297648] [2024-06-27 18:43:15,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966297648] [2024-06-27 18:43:16,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966297648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:16,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:16,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188192366] [2024-06-27 18:43:16,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:16,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:16,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 350 transitions, 4355 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:16,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:16,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:17,999 INFO L124 PetriNetUnfolderBase]: 2780/5352 cut-off events. [2024-06-27 18:43:17,999 INFO L125 PetriNetUnfolderBase]: For 193199/193202 co-relation queries the response was YES. [2024-06-27 18:43:18,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26104 conditions, 5352 events. 2780/5352 cut-off events. For 193199/193202 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39166 event pairs, 814 based on Foata normal form. 11/5047 useless extension candidates. Maximal degree in co-relation 25954. Up to 3334 conditions per place. [2024-06-27 18:43:18,202 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 264 selfloop transitions, 138 changer transitions 0/409 dead transitions. [2024-06-27 18:43:18,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 409 transitions, 5688 flow [2024-06-27 18:43:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:43:18,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:43:18,203 INFO L175 Difference]: Start difference. First operand has 339 places, 350 transitions, 4355 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:43:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 409 transitions, 5688 flow [2024-06-27 18:43:19,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 409 transitions, 5408 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:19,329 INFO L231 Difference]: Finished difference. Result has 343 places, 353 transitions, 4398 flow [2024-06-27 18:43:19,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4398, PETRI_PLACES=343, PETRI_TRANSITIONS=353} [2024-06-27 18:43:19,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-27 18:43:19,330 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 353 transitions, 4398 flow [2024-06-27 18:43:19,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:19,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:19,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:43:19,331 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:19,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash 574081442, now seen corresponding path program 5 times [2024-06-27 18:43:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:19,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881830053] [2024-06-27 18:43:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:20,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:20,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:20,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881830053] [2024-06-27 18:43:20,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881830053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:20,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127346307] [2024-06-27 18:43:20,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:20,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:20,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:20,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:20,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 353 transitions, 4398 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:20,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:20,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:20,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:21,388 INFO L124 PetriNetUnfolderBase]: 2834/5513 cut-off events. [2024-06-27 18:43:21,388 INFO L125 PetriNetUnfolderBase]: For 197394/197394 co-relation queries the response was YES. [2024-06-27 18:43:21,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25770 conditions, 5513 events. 2834/5513 cut-off events. For 197394/197394 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 40808 event pairs, 870 based on Foata normal form. 16/5199 useless extension candidates. Maximal degree in co-relation 25618. Up to 3306 conditions per place. [2024-06-27 18:43:21,451 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 255 selfloop transitions, 134 changer transitions 0/396 dead transitions. [2024-06-27 18:43:21,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 396 transitions, 5380 flow [2024-06-27 18:43:21,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:21,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:43:21,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:43:21,452 INFO L175 Difference]: Start difference. First operand has 343 places, 353 transitions, 4398 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:43:21,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 396 transitions, 5380 flow [2024-06-27 18:43:22,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 396 transitions, 5115 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:22,399 INFO L231 Difference]: Finished difference. Result has 346 places, 353 transitions, 4407 flow [2024-06-27 18:43:22,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4407, PETRI_PLACES=346, PETRI_TRANSITIONS=353} [2024-06-27 18:43:22,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 18:43:22,400 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 353 transitions, 4407 flow [2024-06-27 18:43:22,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:43:22,400 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:22,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2040274312, now seen corresponding path program 6 times [2024-06-27 18:43:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748668168] [2024-06-27 18:43:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:23,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748668168] [2024-06-27 18:43:23,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748668168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:23,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:23,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126570663] [2024-06-27 18:43:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:23,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:23,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:23,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:23,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:23,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:23,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 353 transitions, 4407 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:23,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:25,030 INFO L124 PetriNetUnfolderBase]: 3031/5954 cut-off events. [2024-06-27 18:43:25,030 INFO L125 PetriNetUnfolderBase]: For 215324/215330 co-relation queries the response was YES. [2024-06-27 18:43:25,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28327 conditions, 5954 events. 3031/5954 cut-off events. For 215324/215330 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45298 event pairs, 1068 based on Foata normal form. 14/5617 useless extension candidates. Maximal degree in co-relation 28174. Up to 4380 conditions per place. [2024-06-27 18:43:25,108 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 330 selfloop transitions, 64 changer transitions 0/401 dead transitions. [2024-06-27 18:43:25,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 401 transitions, 5639 flow [2024-06-27 18:43:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:43:25,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:43:25,109 INFO L175 Difference]: Start difference. First operand has 346 places, 353 transitions, 4407 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:43:25,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 401 transitions, 5639 flow [2024-06-27 18:43:26,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 401 transitions, 5389 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:26,507 INFO L231 Difference]: Finished difference. Result has 350 places, 353 transitions, 4289 flow [2024-06-27 18:43:26,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4289, PETRI_PLACES=350, PETRI_TRANSITIONS=353} [2024-06-27 18:43:26,508 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 18:43:26,508 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 353 transitions, 4289 flow [2024-06-27 18:43:26,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:26,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:26,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:26,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:43:26,509 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2040279892, now seen corresponding path program 7 times [2024-06-27 18:43:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298438475] [2024-06-27 18:43:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:27,410 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 18:43:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298438475] [2024-06-27 18:43:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298438475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:27,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:27,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55755093] [2024-06-27 18:43:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:27,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:27,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:27,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:27,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 353 transitions, 4289 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:27,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:27,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:27,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:28,921 INFO L124 PetriNetUnfolderBase]: 3034/5997 cut-off events. [2024-06-27 18:43:28,921 INFO L125 PetriNetUnfolderBase]: For 167276/167282 co-relation queries the response was YES. [2024-06-27 18:43:28,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26990 conditions, 5997 events. 3034/5997 cut-off events. For 167276/167282 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45915 event pairs, 1125 based on Foata normal form. 16/5649 useless extension candidates. Maximal degree in co-relation 26836. Up to 4724 conditions per place. [2024-06-27 18:43:29,002 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 63 changer transitions 0/391 dead transitions. [2024-06-27 18:43:29,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 391 transitions, 5211 flow [2024-06-27 18:43:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:29,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:43:29,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:43:29,003 INFO L175 Difference]: Start difference. First operand has 350 places, 353 transitions, 4289 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:43:29,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 391 transitions, 5211 flow [2024-06-27 18:43:29,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 391 transitions, 5090 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:29,977 INFO L231 Difference]: Finished difference. Result has 353 places, 353 transitions, 4298 flow [2024-06-27 18:43:29,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4298, PETRI_PLACES=353, PETRI_TRANSITIONS=353} [2024-06-27 18:43:29,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-27 18:43:29,978 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 353 transitions, 4298 flow [2024-06-27 18:43:29,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:29,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:29,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:43:29,978 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:29,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:29,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2034767782, now seen corresponding path program 8 times [2024-06-27 18:43:29,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:29,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855829996] [2024-06-27 18:43:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:30,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855829996] [2024-06-27 18:43:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855829996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:30,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691632198] [2024-06-27 18:43:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:30,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:30,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 353 transitions, 4298 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:30,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:32,355 INFO L124 PetriNetUnfolderBase]: 3195/6343 cut-off events. [2024-06-27 18:43:32,355 INFO L125 PetriNetUnfolderBase]: For 222664/222670 co-relation queries the response was YES. [2024-06-27 18:43:32,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29302 conditions, 6343 events. 3195/6343 cut-off events. For 222664/222670 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49432 event pairs, 1176 based on Foata normal form. 14/5991 useless extension candidates. Maximal degree in co-relation 29147. Up to 4138 conditions per place. [2024-06-27 18:43:32,434 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 326 selfloop transitions, 73 changer transitions 0/406 dead transitions. [2024-06-27 18:43:32,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 406 transitions, 5601 flow [2024-06-27 18:43:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:43:32,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:43:32,435 INFO L175 Difference]: Start difference. First operand has 353 places, 353 transitions, 4298 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:43:32,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 406 transitions, 5601 flow [2024-06-27 18:43:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 406 transitions, 5477 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:33,886 INFO L231 Difference]: Finished difference. Result has 354 places, 353 transitions, 4323 flow [2024-06-27 18:43:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4323, PETRI_PLACES=354, PETRI_TRANSITIONS=353} [2024-06-27 18:43:33,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 313 predicate places. [2024-06-27 18:43:33,887 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 353 transitions, 4323 flow [2024-06-27 18:43:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:33,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:33,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:33,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:43:33,888 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:33,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:33,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2034911932, now seen corresponding path program 9 times [2024-06-27 18:43:33,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454015258] [2024-06-27 18:43:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454015258] [2024-06-27 18:43:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454015258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:34,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432673145] [2024-06-27 18:43:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:34,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:34,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:34,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:34,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:34,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 353 transitions, 4323 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:34,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:34,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:36,269 INFO L124 PetriNetUnfolderBase]: 3259/6496 cut-off events. [2024-06-27 18:43:36,269 INFO L125 PetriNetUnfolderBase]: For 227404/227410 co-relation queries the response was YES. [2024-06-27 18:43:36,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29894 conditions, 6496 events. 3259/6496 cut-off events. For 227404/227410 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 51070 event pairs, 1254 based on Foata normal form. 14/6128 useless extension candidates. Maximal degree in co-relation 29738. Up to 4938 conditions per place. [2024-06-27 18:43:36,356 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 321 selfloop transitions, 70 changer transitions 0/398 dead transitions. [2024-06-27 18:43:36,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 398 transitions, 5539 flow [2024-06-27 18:43:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:43:36,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:43:36,358 INFO L175 Difference]: Start difference. First operand has 354 places, 353 transitions, 4323 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:43:36,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 398 transitions, 5539 flow [2024-06-27 18:43:38,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 398 transitions, 5394 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:38,227 INFO L231 Difference]: Finished difference. Result has 356 places, 353 transitions, 4321 flow [2024-06-27 18:43:38,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4178, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4321, PETRI_PLACES=356, PETRI_TRANSITIONS=353} [2024-06-27 18:43:38,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 315 predicate places. [2024-06-27 18:43:38,228 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 353 transitions, 4321 flow [2024-06-27 18:43:38,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:43:38,228 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2034917512, now seen corresponding path program 10 times [2024-06-27 18:43:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910294435] [2024-06-27 18:43:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:39,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910294435] [2024-06-27 18:43:39,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910294435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:39,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:39,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:39,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454628799] [2024-06-27 18:43:39,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:39,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:39,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:39,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:39,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:39,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:39,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 353 transitions, 4321 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:39,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:39,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:39,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:40,711 INFO L124 PetriNetUnfolderBase]: 3246/6497 cut-off events. [2024-06-27 18:43:40,711 INFO L125 PetriNetUnfolderBase]: For 178291/178297 co-relation queries the response was YES. [2024-06-27 18:43:40,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28699 conditions, 6497 events. 3246/6497 cut-off events. For 178291/178297 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51236 event pairs, 1309 based on Foata normal form. 16/6122 useless extension candidates. Maximal degree in co-relation 28542. Up to 5106 conditions per place. [2024-06-27 18:43:40,777 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 70 changer transitions 0/389 dead transitions. [2024-06-27 18:43:40,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 389 transitions, 5233 flow [2024-06-27 18:43:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:43:40,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:43:40,792 INFO L175 Difference]: Start difference. First operand has 356 places, 353 transitions, 4321 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:43:40,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 389 transitions, 5233 flow [2024-06-27 18:43:41,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 389 transitions, 5094 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:41,977 INFO L231 Difference]: Finished difference. Result has 358 places, 353 transitions, 4326 flow [2024-06-27 18:43:41,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4326, PETRI_PLACES=358, PETRI_TRANSITIONS=353} [2024-06-27 18:43:41,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 317 predicate places. [2024-06-27 18:43:41,978 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 353 transitions, 4326 flow [2024-06-27 18:43:41,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:41,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:41,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:43:41,980 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:41,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:41,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1896239632, now seen corresponding path program 11 times [2024-06-27 18:43:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:41,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265531119] [2024-06-27 18:43:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:42,853 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 18:43:42,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:42,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265531119] [2024-06-27 18:43:42,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265531119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:42,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:42,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778870513] [2024-06-27 18:43:42,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:42,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:42,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:42,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:42,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:42,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:42,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 353 transitions, 4326 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:42,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:42,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:42,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:44,520 INFO L124 PetriNetUnfolderBase]: 3310/6605 cut-off events. [2024-06-27 18:43:44,521 INFO L125 PetriNetUnfolderBase]: For 168039/168039 co-relation queries the response was YES. [2024-06-27 18:43:44,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29146 conditions, 6605 events. 3310/6605 cut-off events. For 168039/168039 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 52156 event pairs, 1202 based on Foata normal form. 8/6237 useless extension candidates. Maximal degree in co-relation 28988. Up to 3782 conditions per place. [2024-06-27 18:43:44,600 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 262 selfloop transitions, 132 changer transitions 0/401 dead transitions. [2024-06-27 18:43:44,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 401 transitions, 5362 flow [2024-06-27 18:43:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:43:44,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:43:44,602 INFO L175 Difference]: Start difference. First operand has 358 places, 353 transitions, 4326 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:43:44,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 401 transitions, 5362 flow [2024-06-27 18:43:45,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 401 transitions, 5224 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:45,791 INFO L231 Difference]: Finished difference. Result has 360 places, 353 transitions, 4456 flow [2024-06-27 18:43:45,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4188, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4456, PETRI_PLACES=360, PETRI_TRANSITIONS=353} [2024-06-27 18:43:45,791 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 319 predicate places. [2024-06-27 18:43:45,791 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 353 transitions, 4456 flow [2024-06-27 18:43:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:45,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:45,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:45,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:43:45,792 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:45,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:45,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2018154138, now seen corresponding path program 12 times [2024-06-27 18:43:45,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200387254] [2024-06-27 18:43:45,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:46,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200387254] [2024-06-27 18:43:46,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200387254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:46,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934802660] [2024-06-27 18:43:46,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:46,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:46,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:46,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 353 transitions, 4456 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:46,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:46,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:46,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:48,932 INFO L124 PetriNetUnfolderBase]: 5043/10336 cut-off events. [2024-06-27 18:43:48,932 INFO L125 PetriNetUnfolderBase]: For 192811/192811 co-relation queries the response was YES. [2024-06-27 18:43:49,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43571 conditions, 10336 events. 5043/10336 cut-off events. For 192811/192811 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 90751 event pairs, 2698 based on Foata normal form. 8/9730 useless extension candidates. Maximal degree in co-relation 43412. Up to 5372 conditions per place. [2024-06-27 18:43:49,080 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 403 selfloop transitions, 130 changer transitions 0/540 dead transitions. [2024-06-27 18:43:49,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 540 transitions, 7660 flow [2024-06-27 18:43:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:43:49,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:43:49,081 INFO L175 Difference]: Start difference. First operand has 360 places, 353 transitions, 4456 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:43:49,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 540 transitions, 7660 flow [2024-06-27 18:43:51,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 540 transitions, 7242 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:51,474 INFO L231 Difference]: Finished difference. Result has 367 places, 427 transitions, 5760 flow [2024-06-27 18:43:51,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5760, PETRI_PLACES=367, PETRI_TRANSITIONS=427} [2024-06-27 18:43:51,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-27 18:43:51,475 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 427 transitions, 5760 flow [2024-06-27 18:43:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:51,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:51,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:43:51,475 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:51,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 942221828, now seen corresponding path program 13 times [2024-06-27 18:43:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:51,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972239466] [2024-06-27 18:43:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:52,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:52,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972239466] [2024-06-27 18:43:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972239466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347385447] [2024-06-27 18:43:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:52,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:52,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:52,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:52,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 427 transitions, 5760 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:52,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:52,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:52,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:55,133 INFO L124 PetriNetUnfolderBase]: 5227/10772 cut-off events. [2024-06-27 18:43:55,133 INFO L125 PetriNetUnfolderBase]: For 277030/277032 co-relation queries the response was YES. [2024-06-27 18:43:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47078 conditions, 10772 events. 5227/10772 cut-off events. For 277030/277032 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 95565 event pairs, 2306 based on Foata normal form. 10/10155 useless extension candidates. Maximal degree in co-relation 46914. Up to 6418 conditions per place. [2024-06-27 18:43:55,289 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 195 changer transitions 0/480 dead transitions. [2024-06-27 18:43:55,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 480 transitions, 7206 flow [2024-06-27 18:43:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 18:43:55,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-27 18:43:55,291 INFO L175 Difference]: Start difference. First operand has 367 places, 427 transitions, 5760 flow. Second operand 10 states and 187 transitions. [2024-06-27 18:43:55,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 480 transitions, 7206 flow [2024-06-27 18:43:58,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 480 transitions, 7115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:58,425 INFO L231 Difference]: Finished difference. Result has 373 places, 427 transitions, 6062 flow [2024-06-27 18:43:58,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6062, PETRI_PLACES=373, PETRI_TRANSITIONS=427} [2024-06-27 18:43:58,425 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 18:43:58,425 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 427 transitions, 6062 flow [2024-06-27 18:43:58,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:58,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:58,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:43:58,426 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:58,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash 561798032, now seen corresponding path program 14 times [2024-06-27 18:43:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81572195] [2024-06-27 18:43:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:58,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:59,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:59,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81572195] [2024-06-27 18:43:59,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81572195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:59,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:59,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942864803] [2024-06-27 18:43:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:59,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:59,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:59,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:59,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 427 transitions, 6062 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:59,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:59,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:02,205 INFO L124 PetriNetUnfolderBase]: 5331/11034 cut-off events. [2024-06-27 18:44:02,205 INFO L125 PetriNetUnfolderBase]: For 314653/314655 co-relation queries the response was YES. [2024-06-27 18:44:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48548 conditions, 11034 events. 5331/11034 cut-off events. For 314653/314655 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 98876 event pairs, 2576 based on Foata normal form. 14/10360 useless extension candidates. Maximal degree in co-relation 48383. Up to 8236 conditions per place. [2024-06-27 18:44:02,329 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 259 selfloop transitions, 198 changer transitions 0/464 dead transitions. [2024-06-27 18:44:02,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 464 transitions, 7133 flow [2024-06-27 18:44:02,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:44:02,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:44:02,330 INFO L175 Difference]: Start difference. First operand has 373 places, 427 transitions, 6062 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:44:02,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 464 transitions, 7133 flow [2024-06-27 18:44:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 464 transitions, 6744 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:05,085 INFO L231 Difference]: Finished difference. Result has 375 places, 428 transitions, 6090 flow [2024-06-27 18:44:05,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5673, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6090, PETRI_PLACES=375, PETRI_TRANSITIONS=428} [2024-06-27 18:44:05,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 18:44:05,085 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 428 transitions, 6090 flow [2024-06-27 18:44:05,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:05,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:05,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:44:05,086 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:05,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash 561648302, now seen corresponding path program 15 times [2024-06-27 18:44:05,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:05,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562418447] [2024-06-27 18:44:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:05,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:06,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562418447] [2024-06-27 18:44:06,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562418447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:06,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:06,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:06,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989170339] [2024-06-27 18:44:06,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:06,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:06,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:06,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:06,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 428 transitions, 6090 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:06,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:06,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:09,120 INFO L124 PetriNetUnfolderBase]: 5349/11068 cut-off events. [2024-06-27 18:44:09,120 INFO L125 PetriNetUnfolderBase]: For 262935/262937 co-relation queries the response was YES. [2024-06-27 18:44:09,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48202 conditions, 11068 events. 5349/11068 cut-off events. For 262935/262937 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 99394 event pairs, 2532 based on Foata normal form. 10/10397 useless extension candidates. Maximal degree in co-relation 48036. Up to 7854 conditions per place. [2024-06-27 18:44:09,256 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 275 selfloop transitions, 196 changer transitions 0/478 dead transitions. [2024-06-27 18:44:09,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 478 transitions, 7519 flow [2024-06-27 18:44:09,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:44:09,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:44:09,257 INFO L175 Difference]: Start difference. First operand has 375 places, 428 transitions, 6090 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:44:09,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 478 transitions, 7519 flow [2024-06-27 18:44:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 478 transitions, 7126 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:12,102 INFO L231 Difference]: Finished difference. Result has 377 places, 428 transitions, 6092 flow [2024-06-27 18:44:12,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6092, PETRI_PLACES=377, PETRI_TRANSITIONS=428} [2024-06-27 18:44:12,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:44:12,102 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 428 transitions, 6092 flow [2024-06-27 18:44:12,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:12,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:12,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:44:12,103 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:12,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:12,103 INFO L85 PathProgramCache]: Analyzing trace with hash 561792452, now seen corresponding path program 16 times [2024-06-27 18:44:12,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:12,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986665643] [2024-06-27 18:44:12,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:12,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:12,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:12,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986665643] [2024-06-27 18:44:12,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986665643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:12,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:12,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:12,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614025530] [2024-06-27 18:44:12,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:12,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:13,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:13,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 428 transitions, 6092 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:13,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:13,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:16,008 INFO L124 PetriNetUnfolderBase]: 5339/11050 cut-off events. [2024-06-27 18:44:16,009 INFO L125 PetriNetUnfolderBase]: For 208400/208402 co-relation queries the response was YES. [2024-06-27 18:44:16,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47239 conditions, 11050 events. 5339/11050 cut-off events. For 208400/208402 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 99145 event pairs, 2534 based on Foata normal form. 10/10377 useless extension candidates. Maximal degree in co-relation 47072. Up to 8092 conditions per place. [2024-06-27 18:44:16,137 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 268 selfloop transitions, 197 changer transitions 0/472 dead transitions. [2024-06-27 18:44:16,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 472 transitions, 7225 flow [2024-06-27 18:44:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:44:16,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:44:16,138 INFO L175 Difference]: Start difference. First operand has 377 places, 428 transitions, 6092 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:44:16,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 472 transitions, 7225 flow [2024-06-27 18:44:18,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 472 transitions, 6834 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:18,392 INFO L231 Difference]: Finished difference. Result has 379 places, 428 transitions, 6098 flow [2024-06-27 18:44:18,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5701, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6098, PETRI_PLACES=379, PETRI_TRANSITIONS=428} [2024-06-27 18:44:18,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 18:44:18,393 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 428 transitions, 6098 flow [2024-06-27 18:44:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:18,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:18,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:44:18,393 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:18,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1253510420, now seen corresponding path program 17 times [2024-06-27 18:44:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:18,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914384944] [2024-06-27 18:44:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:19,358 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 18:44:19,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:19,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914384944] [2024-06-27 18:44:19,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914384944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:19,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:19,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:19,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052770877] [2024-06-27 18:44:19,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:19,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:19,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:19,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:19,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:19,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:19,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 428 transitions, 6098 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:19,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:19,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:22,453 INFO L124 PetriNetUnfolderBase]: 5500/11419 cut-off events. [2024-06-27 18:44:22,454 INFO L125 PetriNetUnfolderBase]: For 284857/284859 co-relation queries the response was YES. [2024-06-27 18:44:22,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49628 conditions, 11419 events. 5500/11419 cut-off events. For 284857/284859 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 103303 event pairs, 2515 based on Foata normal form. 10/10769 useless extension candidates. Maximal degree in co-relation 49460. Up to 7610 conditions per place. [2024-06-27 18:44:22,625 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 299 selfloop transitions, 176 changer transitions 0/482 dead transitions. [2024-06-27 18:44:22,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 482 transitions, 7555 flow [2024-06-27 18:44:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 18:44:22,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081081081081081 [2024-06-27 18:44:22,626 INFO L175 Difference]: Start difference. First operand has 379 places, 428 transitions, 6098 flow. Second operand 10 states and 188 transitions. [2024-06-27 18:44:22,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 482 transitions, 7555 flow [2024-06-27 18:44:25,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 482 transitions, 7162 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:25,806 INFO L231 Difference]: Finished difference. Result has 381 places, 428 transitions, 6062 flow [2024-06-27 18:44:25,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5705, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6062, PETRI_PLACES=381, PETRI_TRANSITIONS=428} [2024-06-27 18:44:25,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 340 predicate places. [2024-06-27 18:44:25,807 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 428 transitions, 6062 flow [2024-06-27 18:44:25,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:25,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:44:25,807 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:25,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:25,807 INFO L85 PathProgramCache]: Analyzing trace with hash 700326182, now seen corresponding path program 18 times [2024-06-27 18:44:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:25,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845559980] [2024-06-27 18:44:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:25,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:26,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:26,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845559980] [2024-06-27 18:44:26,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845559980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:26,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:26,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467440219] [2024-06-27 18:44:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:26,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:26,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:26,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:26,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:26,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 428 transitions, 6062 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:26,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:26,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:29,696 INFO L124 PetriNetUnfolderBase]: 5584/11642 cut-off events. [2024-06-27 18:44:29,697 INFO L125 PetriNetUnfolderBase]: For 305473/305475 co-relation queries the response was YES. [2024-06-27 18:44:29,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50376 conditions, 11642 events. 5584/11642 cut-off events. For 305473/305475 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 106240 event pairs, 2759 based on Foata normal form. 12/10932 useless extension candidates. Maximal degree in co-relation 50207. Up to 8555 conditions per place. [2024-06-27 18:44:29,850 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 265 selfloop transitions, 201 changer transitions 0/473 dead transitions. [2024-06-27 18:44:29,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 473 transitions, 7168 flow [2024-06-27 18:44:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:44:29,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:44:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-27 18:44:29,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2024-06-27 18:44:29,852 INFO L175 Difference]: Start difference. First operand has 381 places, 428 transitions, 6062 flow. Second operand 13 states and 213 transitions. [2024-06-27 18:44:29,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 473 transitions, 7168 flow [2024-06-27 18:44:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 473 transitions, 6819 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:33,469 INFO L231 Difference]: Finished difference. Result has 386 places, 428 transitions, 6128 flow [2024-06-27 18:44:33,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6128, PETRI_PLACES=386, PETRI_TRANSITIONS=428} [2024-06-27 18:44:33,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 18:44:33,470 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 428 transitions, 6128 flow [2024-06-27 18:44:33,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:33,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:33,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:44:33,471 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:33,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:33,471 INFO L85 PathProgramCache]: Analyzing trace with hash 705688562, now seen corresponding path program 19 times [2024-06-27 18:44:33,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:33,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627747099] [2024-06-27 18:44:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:34,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:34,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627747099] [2024-06-27 18:44:34,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627747099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:34,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:34,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:34,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010209362] [2024-06-27 18:44:34,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:34,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:34,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:34,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 428 transitions, 6128 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:34,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:34,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:34,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:37,839 INFO L124 PetriNetUnfolderBase]: 5571/11617 cut-off events. [2024-06-27 18:44:37,840 INFO L125 PetriNetUnfolderBase]: For 234725/234727 co-relation queries the response was YES. [2024-06-27 18:44:37,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49139 conditions, 11617 events. 5571/11617 cut-off events. For 234725/234727 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 106067 event pairs, 2840 based on Foata normal form. 12/10904 useless extension candidates. Maximal degree in co-relation 48969. Up to 9363 conditions per place. [2024-06-27 18:44:37,987 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 375 selfloop transitions, 90 changer transitions 0/472 dead transitions. [2024-06-27 18:44:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 472 transitions, 7231 flow [2024-06-27 18:44:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-27 18:44:37,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-27 18:44:37,988 INFO L175 Difference]: Start difference. First operand has 386 places, 428 transitions, 6128 flow. Second operand 12 states and 195 transitions. [2024-06-27 18:44:37,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 472 transitions, 7231 flow [2024-06-27 18:44:40,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 472 transitions, 6834 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-27 18:44:40,785 INFO L231 Difference]: Finished difference. Result has 387 places, 428 transitions, 5920 flow [2024-06-27 18:44:40,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5920, PETRI_PLACES=387, PETRI_TRANSITIONS=428} [2024-06-27 18:44:40,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-27 18:44:40,786 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 428 transitions, 5920 flow [2024-06-27 18:44:40,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:40,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:40,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:44:40,786 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:40,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:40,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1558600486, now seen corresponding path program 20 times [2024-06-27 18:44:40,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:40,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268997033] [2024-06-27 18:44:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:40,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:41,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:41,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268997033] [2024-06-27 18:44:41,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268997033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311795422] [2024-06-27 18:44:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:41,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:41,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:41,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 428 transitions, 5920 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:41,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:44,983 INFO L124 PetriNetUnfolderBase]: 5755/12017 cut-off events. [2024-06-27 18:44:44,983 INFO L125 PetriNetUnfolderBase]: For 314057/314061 co-relation queries the response was YES. [2024-06-27 18:44:45,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51522 conditions, 12017 events. 5755/12017 cut-off events. For 314057/314061 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 110698 event pairs, 2910 based on Foata normal form. 12/11292 useless extension candidates. Maximal degree in co-relation 51351. Up to 9397 conditions per place. [2024-06-27 18:44:45,148 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 370 selfloop transitions, 104 changer transitions 0/481 dead transitions. [2024-06-27 18:44:45,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 481 transitions, 7355 flow [2024-06-27 18:44:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:45,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:44:45,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:44:45,149 INFO L175 Difference]: Start difference. First operand has 387 places, 428 transitions, 5920 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:44:45,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 481 transitions, 7355 flow [2024-06-27 18:44:48,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 481 transitions, 7182 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:48,956 INFO L231 Difference]: Finished difference. Result has 390 places, 429 transitions, 5982 flow [2024-06-27 18:44:48,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5982, PETRI_PLACES=390, PETRI_TRANSITIONS=429} [2024-06-27 18:44:48,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 18:44:48,957 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 429 transitions, 5982 flow [2024-06-27 18:44:48,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:48,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:48,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:44:48,957 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:48,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:48,958 INFO L85 PathProgramCache]: Analyzing trace with hash 700320602, now seen corresponding path program 21 times [2024-06-27 18:44:48,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:48,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562366831] [2024-06-27 18:44:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:48,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:50,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562366831] [2024-06-27 18:44:50,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562366831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:50,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:50,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679823381] [2024-06-27 18:44:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:50,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:50,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:50,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 429 transitions, 5982 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:50,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:50,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:50,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:53,489 INFO L124 PetriNetUnfolderBase]: 5819/12167 cut-off events. [2024-06-27 18:44:53,489 INFO L125 PetriNetUnfolderBase]: For 319811/319813 co-relation queries the response was YES. [2024-06-27 18:44:53,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52197 conditions, 12167 events. 5819/12167 cut-off events. For 319811/319813 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 112424 event pairs, 2950 based on Foata normal form. 10/11429 useless extension candidates. Maximal degree in co-relation 52024. Up to 9633 conditions per place. [2024-06-27 18:44:53,636 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 375 selfloop transitions, 100 changer transitions 0/482 dead transitions. [2024-06-27 18:44:53,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 482 transitions, 7166 flow [2024-06-27 18:44:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:44:53,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-27 18:44:53,637 INFO L175 Difference]: Start difference. First operand has 390 places, 429 transitions, 5982 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:44:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 482 transitions, 7166 flow [2024-06-27 18:44:56,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 482 transitions, 6967 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:56,816 INFO L231 Difference]: Finished difference. Result has 393 places, 429 transitions, 5986 flow [2024-06-27 18:44:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5783, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5986, PETRI_PLACES=393, PETRI_TRANSITIONS=429} [2024-06-27 18:44:56,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 18:44:56,817 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 429 transitions, 5986 flow [2024-06-27 18:44:56,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:56,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:56,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:44:56,818 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:56,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 705890372, now seen corresponding path program 22 times [2024-06-27 18:44:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93382581] [2024-06-27 18:44:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:56,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:57,898 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 18:44:57,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:57,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93382581] [2024-06-27 18:44:57,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93382581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:57,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:57,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:57,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465680266] [2024-06-27 18:44:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:57,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:57,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:57,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:57,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 429 transitions, 5986 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:57,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:57,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand