./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:30:04,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:30:04,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:30:04,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:30:04,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:30:04,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:30:04,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:30:04,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:30:04,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:30:04,729 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:30:04,729 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:30:04,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:30:04,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:30:04,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:30:04,730 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:30:04,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:30:04,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:30:04,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:30:04,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:30:04,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:30:04,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:30:04,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:30:04,732 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:30:04,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:30:04,732 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:30:04,733 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:30:04,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:30:04,733 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:30:04,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:30:04,734 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:30:04,734 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:30:04,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:30:04,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:30:04,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:30:04,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:30:04,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:30:04,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:30:04,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:30:04,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:30:04,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:30:04,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:30:04,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:30:04,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:30:04,980 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:30:04,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:30:06,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:30:06,213 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:30:06,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:30:06,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f10c1f2/c93defab3cd54d30aced3fbc6e68f707/FLAGaeb668f3d [2024-06-27 20:30:06,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f10c1f2/c93defab3cd54d30aced3fbc6e68f707 [2024-06-27 20:30:06,243 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:30:06,244 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:30:06,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 20:30:06,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:30:06,362 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:30:06,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:30:06,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:30:06,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:30:06,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:30:06" (1/2) ... [2024-06-27 20:30:06,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbc0de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:30:06, skipping insertion in model container [2024-06-27 20:30:06,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:30:06" (1/2) ... [2024-06-27 20:30:06,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62b02008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:30:06, skipping insertion in model container [2024-06-27 20:30:06,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:30:06" (2/2) ... [2024-06-27 20:30:06,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbc0de9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:30:06, skipping insertion in model container [2024-06-27 20:30:06,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:30:06" (2/2) ... [2024-06-27 20:30:06,370 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:30:06,419 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:30:06,420 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:30:06,421 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 20:30:06,421 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:30:06,421 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-27 20:30:06,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:30:06,769 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:30:06,780 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:30:06,884 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:30:06,920 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:30:06,921 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:30:06 WrapperNode [2024-06-27 20:30:06,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:30:06,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:30:06,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:30:06,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:30:06,928 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 08:30:06" (1/1) ... [2024-06-27 20:30:06,952 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 08:30:06" (1/1) ... [2024-06-27 20:30:06,985 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-27 20:30:06,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:30:06,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:30:06,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:30:06,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:30:06,995 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 08:30:06" (1/1) ... [2024-06-27 20:30:06,995 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,009 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,025 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 20:30:07,029 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,030 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,037 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,043 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,046 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,050 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:30:07,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:30:07,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:30:07,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:30:07,056 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 08:30:06" (1/1) ... [2024-06-27 20:30:07,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:30:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:30:07,110 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 20:30:07,143 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 20:30:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:30:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:30:07,155 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:30:07,155 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:30:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:30:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:30:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:30:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:30:07,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:30:07,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:30:07,157 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 20:30:07,263 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:30:07,264 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:30:07,480 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:30:07,481 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:30:07,620 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:30:07,621 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:30:07,621 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:30:07 BoogieIcfgContainer [2024-06-27 20:30:07,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:30:07,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:30:07,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:30:07,625 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:30:07,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:30:06" (1/4) ... [2024-06-27 20:30:07,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f06fe91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:30:07, skipping insertion in model container [2024-06-27 20:30:07,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:30:06" (2/4) ... [2024-06-27 20:30:07,626 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f06fe91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:30:07, skipping insertion in model container [2024-06-27 20:30:07,627 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 08:30:06" (3/4) ... [2024-06-27 20:30:07,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f06fe91 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:30:07, skipping insertion in model container [2024-06-27 20:30:07,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:30:07" (4/4) ... [2024-06-27 20:30:07,632 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:30:07,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:30:07,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:30:07,645 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:30:07,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:30:07,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:30:07,750 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-27 20:30:07,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:30:07,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:30:07,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-27 20:30:07,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-27 20:30:07,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:30:07,784 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;@29e3eae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:30:07,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:30:07,788 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:30:07,788 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:30:07,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:30:07,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:07,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:30:07,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:07,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-27 20:30:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914264337] [2024-06-27 20:30:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:07,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:08,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:08,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914264337] [2024-06-27 20:30:08,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914264337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:08,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:08,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:30:08,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465230791] [2024-06-27 20:30:08,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:30:08,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:08,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:30:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:30:08,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-27 20:30:08,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:08,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:08,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-27 20:30:08,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:08,701 INFO L124 PetriNetUnfolderBase]: 162/320 cut-off events. [2024-06-27 20:30:08,701 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 20:30:08,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 320 events. 162/320 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1209 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-27 20:30:08,707 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-27 20:30:08,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-27 20:30:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:30:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:30:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-27 20:30:08,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-27 20:30:08,719 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-27 20:30:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-27 20:30:08,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:30:08,723 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-27 20:30:08,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-27 20:30:08,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-27 20:30:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-27 20:30:08,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:08,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:08,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:08,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:30:08,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:08,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-27 20:30:08,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:08,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510098624] [2024-06-27 20:30:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:09,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510098624] [2024-06-27 20:30:09,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510098624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:09,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:09,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:30:09,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322210186] [2024-06-27 20:30:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:30:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:30:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:30:09,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:30:09,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:09,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:09,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:30:09,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:09,279 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-27 20:30:09,279 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-27 20:30:09,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-27 20:30:09,284 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 20:30:09,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-27 20:30:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:30:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:30:09,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-27 20:30:09,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-27 20:30:09,287 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-27 20:30:09,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-27 20:30:09,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:30:09,291 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-27 20:30:09,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-27 20:30:09,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-27 20:30:09,292 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-27 20:30:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:09,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:09,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:09,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:30:09,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:09,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:09,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-27 20:30:09,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148356703] [2024-06-27 20:30:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:09,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148356703] [2024-06-27 20:30:09,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148356703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:09,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:30:09,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717259455] [2024-06-27 20:30:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:09,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:30:09,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:30:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:30:09,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:30:09,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:09,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:09,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:30:09,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:09,832 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-27 20:30:09,832 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-27 20:30:09,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1230 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-27 20:30:09,834 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-27 20:30:09,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-27 20:30:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:30:09,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:30:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-27 20:30:09,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-27 20:30:09,835 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-27 20:30:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-27 20:30:09,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:30:09,836 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-27 20:30:09,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-27 20:30:09,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-27 20:30:09,837 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-27 20:30:09,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:09,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:09,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:30:09,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:09,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-27 20:30:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:09,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848340259] [2024-06-27 20:30:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:09,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:10,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:10,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848340259] [2024-06-27 20:30:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848340259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:10,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:10,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:30:10,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459557664] [2024-06-27 20:30:10,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:10,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:30:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:10,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:30:10,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:30:10,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-27 20:30:10,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:10,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:10,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-27 20:30:10,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:10,923 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-27 20:30:10,923 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-27 20:30:10,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-27 20:30:10,925 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 20:30:10,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-27 20:30:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:30:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:30:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 20:30:10,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-27 20:30:10,926 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-27 20:30:10,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-27 20:30:10,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:10,928 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-27 20:30:10,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-27 20:30:10,929 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-27 20:30:10,929 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-27 20:30:10,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:10,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:10,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:10,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:30:10,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:10,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-27 20:30:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:10,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821956991] [2024-06-27 20:30:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:10,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821956991] [2024-06-27 20:30:11,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821956991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:11,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:11,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:30:11,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064891310] [2024-06-27 20:30:11,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:11,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:30:11,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:11,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:30:11,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:30:11,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-27 20:30:11,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:11,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:11,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-27 20:30:11,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:11,404 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2024-06-27 20:30:11,405 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-27 20:30:11,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 294 events. 147/294 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1061 event pairs, 53 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-27 20:30:11,406 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-27 20:30:11,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 196 flow [2024-06-27 20:30:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:30:11,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:30:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-27 20:30:11,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-27 20:30:11,408 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 63 transitions. [2024-06-27 20:30:11,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 196 flow [2024-06-27 20:30:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:11,412 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-27 20:30:11,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-27 20:30:11,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-27 20:30:11,413 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-27 20:30:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:11,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:11,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:11,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:30:11,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:11,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:11,415 INFO L85 PathProgramCache]: Analyzing trace with hash 29843198, now seen corresponding path program 1 times [2024-06-27 20:30:11,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:11,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756697074] [2024-06-27 20:30:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:11,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:12,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:12,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756697074] [2024-06-27 20:30:12,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756697074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:12,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:12,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:30:12,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339526552] [2024-06-27 20:30:12,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:12,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:30:12,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:30:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:30:12,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:12,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:12,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:12,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:12,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:12,234 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-27 20:30:12,235 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-27 20:30:12,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 329 events. 172/329 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 64 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 953. Up to 298 conditions per place. [2024-06-27 20:30:12,236 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-27 20:30:12,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-27 20:30:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:30:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:30:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-27 20:30:12,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:30:12,238 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-27 20:30:12,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-27 20:30:12,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:12,240 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-27 20:30:12,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-27 20:30:12,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-27 20:30:12,241 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-27 20:30:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:12,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:12,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:30:12,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:12,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 1 times [2024-06-27 20:30:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249243996] [2024-06-27 20:30:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:12,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:12,647 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 20:30:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249243996] [2024-06-27 20:30:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249243996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:12,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:30:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476614448] [2024-06-27 20:30:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:12,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:30:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:30:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:30:12,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:12,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:12,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:12,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:12,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:12,854 INFO L124 PetriNetUnfolderBase]: 188/348 cut-off events. [2024-06-27 20:30:12,854 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-27 20:30:12,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 348 events. 188/348 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 71 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1111. Up to 311 conditions per place. [2024-06-27 20:30:12,856 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 20:30:12,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 253 flow [2024-06-27 20:30:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:30:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:30:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 20:30:12,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-27 20:30:12,857 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 71 transitions. [2024-06-27 20:30:12,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 253 flow [2024-06-27 20:30:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:12,859 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-27 20:30:12,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-27 20:30:12,860 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-27 20:30:12,860 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-27 20:30:12,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:12,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:12,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:12,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:30:12,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:12,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash 703487631, now seen corresponding path program 2 times [2024-06-27 20:30:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:12,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347091028] [2024-06-27 20:30:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:13,228 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 20:30:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:13,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347091028] [2024-06-27 20:30:13,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347091028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:13,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:13,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:30:13,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068161200] [2024-06-27 20:30:13,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:30:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:30:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:30:13,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:13,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:13,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:13,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:13,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:13,396 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-27 20:30:13,396 INFO L125 PetriNetUnfolderBase]: For 1247/1249 co-relation queries the response was YES. [2024-06-27 20:30:13,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 346 events. 186/346 cut-off events. For 1247/1249 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 75 based on Foata normal form. 3/349 useless extension candidates. Maximal degree in co-relation 1174. Up to 302 conditions per place. [2024-06-27 20:30:13,400 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-27 20:30:13,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 263 flow [2024-06-27 20:30:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:30:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:30:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-27 20:30:13,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-27 20:30:13,410 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 70 transitions. [2024-06-27 20:30:13,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 263 flow [2024-06-27 20:30:13,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:13,414 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-27 20:30:13,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-27 20:30:13,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-27 20:30:13,414 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-27 20:30:13,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:13,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:13,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:13,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:30:13,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:13,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-27 20:30:13,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772030693] [2024-06-27 20:30:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:14,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:14,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772030693] [2024-06-27 20:30:14,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772030693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:14,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:14,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:14,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88149970] [2024-06-27 20:30:14,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:14,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:14,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:14,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:14,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:14,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:14,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:14,189 INFO L124 PetriNetUnfolderBase]: 171/323 cut-off events. [2024-06-27 20:30:14,189 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-27 20:30:14,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 323 events. 171/323 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 62 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1134. Up to 294 conditions per place. [2024-06-27 20:30:14,191 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-06-27 20:30:14,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 297 flow [2024-06-27 20:30:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-27 20:30:14,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:30:14,192 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 7 states and 77 transitions. [2024-06-27 20:30:14,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 297 flow [2024-06-27 20:30:14,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 270 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:14,194 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 199 flow [2024-06-27 20:30:14,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-27 20:30:14,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-27 20:30:14,197 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 199 flow [2024-06-27 20:30:14,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:14,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:14,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:30:14,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:14,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:14,198 INFO L85 PathProgramCache]: Analyzing trace with hash 10610739, now seen corresponding path program 1 times [2024-06-27 20:30:14,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747948111] [2024-06-27 20:30:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747948111] [2024-06-27 20:30:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747948111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163886690] [2024-06-27 20:30:14,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:14,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:14,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:14,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:14,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:14,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:14,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:14,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:14,990 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-27 20:30:14,990 INFO L125 PetriNetUnfolderBase]: For 1837/1837 co-relation queries the response was YES. [2024-06-27 20:30:14,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 349 events. 188/349 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1226 event pairs, 49 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1306. Up to 291 conditions per place. [2024-06-27 20:30:14,992 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-27 20:30:14,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 355 flow [2024-06-27 20:30:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:30:14,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:30:14,993 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 199 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:30:14,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 355 flow [2024-06-27 20:30:14,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 332 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:14,996 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 232 flow [2024-06-27 20:30:14,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-27 20:30:14,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-27 20:30:14,996 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 232 flow [2024-06-27 20:30:14,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:14,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:14,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:14,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:30:14,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:14,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 156149999, now seen corresponding path program 1 times [2024-06-27 20:30:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351129806] [2024-06-27 20:30:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:15,410 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 20:30:15,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:15,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351129806] [2024-06-27 20:30:15,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351129806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:15,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:15,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886727318] [2024-06-27 20:30:15,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:15,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:15,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:15,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:15,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:15,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:15,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:15,616 INFO L124 PetriNetUnfolderBase]: 205/368 cut-off events. [2024-06-27 20:30:15,616 INFO L125 PetriNetUnfolderBase]: For 2148/2148 co-relation queries the response was YES. [2024-06-27 20:30:15,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 368 events. 205/368 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1251 event pairs, 50 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1486. Up to 345 conditions per place. [2024-06-27 20:30:15,618 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-27 20:30:15,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 372 flow [2024-06-27 20:30:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 20:30:15,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-27 20:30:15,620 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 232 flow. Second operand 7 states and 74 transitions. [2024-06-27 20:30:15,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 372 flow [2024-06-27 20:30:15,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 352 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:15,622 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-27 20:30:15,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-27 20:30:15,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-27 20:30:15,623 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-27 20:30:15,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:15,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:15,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:15,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:30:15,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:15,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 2 times [2024-06-27 20:30:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:15,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882105851] [2024-06-27 20:30:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:16,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:16,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882105851] [2024-06-27 20:30:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882105851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712688924] [2024-06-27 20:30:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:16,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:16,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:16,290 INFO L124 PetriNetUnfolderBase]: 204/374 cut-off events. [2024-06-27 20:30:16,291 INFO L125 PetriNetUnfolderBase]: For 2784/2784 co-relation queries the response was YES. [2024-06-27 20:30:16,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 374 events. 204/374 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 48 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1589. Up to 301 conditions per place. [2024-06-27 20:30:16,293 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-27 20:30:16,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 453 flow [2024-06-27 20:30:16,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 20:30:16,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-27 20:30:16,294 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 7 states and 86 transitions. [2024-06-27 20:30:16,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 453 flow [2024-06-27 20:30:16,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 428 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:16,296 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 301 flow [2024-06-27 20:30:16,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-27 20:30:16,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-27 20:30:16,297 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 301 flow [2024-06-27 20:30:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:16,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:30:16,298 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:16,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 333281519, now seen corresponding path program 2 times [2024-06-27 20:30:16,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:16,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914815425] [2024-06-27 20:30:16,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:16,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:16,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:16,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914815425] [2024-06-27 20:30:16,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914815425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:16,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:16,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:16,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116108626] [2024-06-27 20:30:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:16,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:16,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:16,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:16,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:16,916 INFO L124 PetriNetUnfolderBase]: 219/392 cut-off events. [2024-06-27 20:30:16,916 INFO L125 PetriNetUnfolderBase]: For 3308/3312 co-relation queries the response was YES. [2024-06-27 20:30:16,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 392 events. 219/392 cut-off events. For 3308/3312 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1361 event pairs, 55 based on Foata normal form. 5/397 useless extension candidates. Maximal degree in co-relation 1750. Up to 352 conditions per place. [2024-06-27 20:30:16,918 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-27 20:30:16,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 491 flow [2024-06-27 20:30:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:16,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-27 20:30:16,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35023041474654376 [2024-06-27 20:30:16,933 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 301 flow. Second operand 7 states and 76 transitions. [2024-06-27 20:30:16,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 491 flow [2024-06-27 20:30:16,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 469 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:16,936 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 354 flow [2024-06-27 20:30:16,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-27 20:30:16,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-27 20:30:16,936 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 354 flow [2024-06-27 20:30:16,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:16,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:16,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:16,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:30:16,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:16,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1385657019, now seen corresponding path program 3 times [2024-06-27 20:30:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:16,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623553859] [2024-06-27 20:30:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:17,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623553859] [2024-06-27 20:30:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623553859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:17,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912668690] [2024-06-27 20:30:17,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:17,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:17,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:17,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:17,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:17,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:17,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:17,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:17,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:17,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:17,664 INFO L124 PetriNetUnfolderBase]: 202/374 cut-off events. [2024-06-27 20:30:17,664 INFO L125 PetriNetUnfolderBase]: For 3804/3806 co-relation queries the response was YES. [2024-06-27 20:30:17,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 374 events. 202/374 cut-off events. For 3804/3806 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 58 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1723. Up to 285 conditions per place. [2024-06-27 20:30:17,667 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2024-06-27 20:30:17,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 540 flow [2024-06-27 20:30:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:30:17,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:30:17,668 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 354 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:30:17,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 540 flow [2024-06-27 20:30:17,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 514 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:17,671 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 397 flow [2024-06-27 20:30:17,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-27 20:30:17,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 20:30:17,672 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 397 flow [2024-06-27 20:30:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:17,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:17,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:30:17,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:17,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:17,673 INFO L85 PathProgramCache]: Analyzing trace with hash 333518669, now seen corresponding path program 3 times [2024-06-27 20:30:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55517847] [2024-06-27 20:30:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:17,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:18,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:18,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55517847] [2024-06-27 20:30:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55517847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:18,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:30:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125036166] [2024-06-27 20:30:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:18,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:30:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:30:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:30:18,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:18,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:18,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:18,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:18,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:18,243 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-27 20:30:18,243 INFO L125 PetriNetUnfolderBase]: For 4102/4106 co-relation queries the response was YES. [2024-06-27 20:30:18,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 383 events. 213/383 cut-off events. For 4102/4106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 54 based on Foata normal form. 5/388 useless extension candidates. Maximal degree in co-relation 1846. Up to 344 conditions per place. [2024-06-27 20:30:18,245 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-06-27 20:30:18,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 531 flow [2024-06-27 20:30:18,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:18,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 20:30:18,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-27 20:30:18,246 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 397 flow. Second operand 7 states and 74 transitions. [2024-06-27 20:30:18,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 531 flow [2024-06-27 20:30:18,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 468 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:18,250 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 375 flow [2024-06-27 20:30:18,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-27 20:30:18,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-27 20:30:18,250 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 375 flow [2024-06-27 20:30:18,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:18,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:18,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:30:18,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:18,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -45321528, now seen corresponding path program 1 times [2024-06-27 20:30:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:18,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244610270] [2024-06-27 20:30:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:18,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244610270] [2024-06-27 20:30:18,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244610270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:18,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:18,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851807154] [2024-06-27 20:30:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:18,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:18,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 375 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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 20:30:18,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:18,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:18,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:19,187 INFO L124 PetriNetUnfolderBase]: 229/422 cut-off events. [2024-06-27 20:30:19,187 INFO L125 PetriNetUnfolderBase]: For 4627/4627 co-relation queries the response was YES. [2024-06-27 20:30:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 422 events. 229/422 cut-off events. For 4627/4627 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1581 event pairs, 47 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 2002. Up to 336 conditions per place. [2024-06-27 20:30:19,189 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-06-27 20:30:19,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 673 flow [2024-06-27 20:30:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 20:30:19,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-27 20:30:19,191 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 375 flow. Second operand 8 states and 97 transitions. [2024-06-27 20:30:19,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 673 flow [2024-06-27 20:30:19,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 628 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:19,198 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 506 flow [2024-06-27 20:30:19,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-06-27 20:30:19,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-27 20:30:19,198 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 506 flow [2024-06-27 20:30:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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 20:30:19,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:19,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:19,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:30:19,199 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:19,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1512606054, now seen corresponding path program 2 times [2024-06-27 20:30:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433238202] [2024-06-27 20:30:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:19,986 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 20:30:19,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:19,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433238202] [2024-06-27 20:30:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433238202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:19,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928050833] [2024-06-27 20:30:19,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:19,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:19,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:19,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:20,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:20,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 506 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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 20:30:20,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:20,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:20,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:20,295 INFO L124 PetriNetUnfolderBase]: 228/420 cut-off events. [2024-06-27 20:30:20,296 INFO L125 PetriNetUnfolderBase]: For 5135/5135 co-relation queries the response was YES. [2024-06-27 20:30:20,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 420 events. 228/420 cut-off events. For 5135/5135 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 50 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2069. Up to 321 conditions per place. [2024-06-27 20:30:20,298 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-27 20:30:20,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 692 flow [2024-06-27 20:30:20,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:30:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:30:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 20:30:20,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-27 20:30:20,300 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 506 flow. Second operand 7 states and 85 transitions. [2024-06-27 20:30:20,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 692 flow [2024-06-27 20:30:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 658 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:20,305 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 538 flow [2024-06-27 20:30:20,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-06-27 20:30:20,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-27 20:30:20,306 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 538 flow [2024-06-27 20:30:20,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 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 20:30:20,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:20,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:20,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:30:20,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:20,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 541959275, now seen corresponding path program 1 times [2024-06-27 20:30:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611852128] [2024-06-27 20:30:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611852128] [2024-06-27 20:30:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611852128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:20,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509599042] [2024-06-27 20:30:20,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:20,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:20,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:20,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:20,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:20,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:20,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:20,992 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-27 20:30:20,993 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-06-27 20:30:20,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 442 events. 246/442 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1627 event pairs, 50 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2232. Up to 359 conditions per place. [2024-06-27 20:30:20,995 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-27 20:30:20,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 766 flow [2024-06-27 20:30:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:30:20,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:30:20,997 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 538 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:30:20,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 766 flow [2024-06-27 20:30:21,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 708 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:21,003 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 556 flow [2024-06-27 20:30:21,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=556, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-27 20:30:21,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-27 20:30:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 556 flow [2024-06-27 20:30:21,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:21,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:21,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:21,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:30:21,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:21,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 545678345, now seen corresponding path program 2 times [2024-06-27 20:30:21,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513494498] [2024-06-27 20:30:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513494498] [2024-06-27 20:30:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513494498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:21,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649075443] [2024-06-27 20:30:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:21,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:21,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:21,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:21,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:21,641 INFO L124 PetriNetUnfolderBase]: 267/476 cut-off events. [2024-06-27 20:30:21,641 INFO L125 PetriNetUnfolderBase]: For 6622/6622 co-relation queries the response was YES. [2024-06-27 20:30:21,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 476 events. 267/476 cut-off events. For 6622/6622 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1784 event pairs, 58 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2487. Up to 348 conditions per place. [2024-06-27 20:30:21,644 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 32 changer transitions 0/90 dead transitions. [2024-06-27 20:30:21,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 908 flow [2024-06-27 20:30:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:30:21,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:30:21,646 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 556 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:30:21,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 908 flow [2024-06-27 20:30:21,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 850 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:21,657 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 637 flow [2024-06-27 20:30:21,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-06-27 20:30:21,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-27 20:30:21,657 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 637 flow [2024-06-27 20:30:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:21,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:21,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:21,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:30:21,658 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:21,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash 545684142, now seen corresponding path program 1 times [2024-06-27 20:30:21,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:21,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130434026] [2024-06-27 20:30:21,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:21,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:22,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:22,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130434026] [2024-06-27 20:30:22,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130434026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:22,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:22,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:22,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907701779] [2024-06-27 20:30:22,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:22,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:22,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:22,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:22,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:22,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:22,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:22,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:22,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:22,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:22,372 INFO L124 PetriNetUnfolderBase]: 270/481 cut-off events. [2024-06-27 20:30:22,372 INFO L125 PetriNetUnfolderBase]: For 7331/7331 co-relation queries the response was YES. [2024-06-27 20:30:22,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 481 events. 270/481 cut-off events. For 7331/7331 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1804 event pairs, 56 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2578. Up to 448 conditions per place. [2024-06-27 20:30:22,375 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-27 20:30:22,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 855 flow [2024-06-27 20:30:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:22,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:22,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 20:30:22,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-27 20:30:22,376 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 637 flow. Second operand 8 states and 82 transitions. [2024-06-27 20:30:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 855 flow [2024-06-27 20:30:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 818 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:22,383 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 651 flow [2024-06-27 20:30:22,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-27 20:30:22,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-27 20:30:22,384 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 651 flow [2024-06-27 20:30:22,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:22,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:22,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:22,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:30:22,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:22,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:22,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1542491959, now seen corresponding path program 3 times [2024-06-27 20:30:22,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:22,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739301361] [2024-06-27 20:30:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:22,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:22,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:22,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:22,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739301361] [2024-06-27 20:30:22,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739301361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:22,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:22,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349634465] [2024-06-27 20:30:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:22,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:22,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:22,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:22,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:22,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:22,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:22,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:23,072 INFO L124 PetriNetUnfolderBase]: 266/475 cut-off events. [2024-06-27 20:30:23,072 INFO L125 PetriNetUnfolderBase]: For 7627/7627 co-relation queries the response was YES. [2024-06-27 20:30:23,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 475 events. 266/475 cut-off events. For 7627/7627 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1763 event pairs, 54 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2580. Up to 350 conditions per place. [2024-06-27 20:30:23,075 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 36 changer transitions 0/91 dead transitions. [2024-06-27 20:30:23,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 907 flow [2024-06-27 20:30:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:23,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 20:30:23,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 20:30:23,076 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 651 flow. Second operand 8 states and 90 transitions. [2024-06-27 20:30:23,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 907 flow [2024-06-27 20:30:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 858 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:23,094 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 679 flow [2024-06-27 20:30:23,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=679, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-27 20:30:23,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-27 20:30:23,095 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 679 flow [2024-06-27 20:30:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:23,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:23,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:23,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:30:23,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:23,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1741793749, now seen corresponding path program 4 times [2024-06-27 20:30:23,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900864813] [2024-06-27 20:30:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900864813] [2024-06-27 20:30:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900864813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:23,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190589816] [2024-06-27 20:30:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:23,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:23,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:23,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:23,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:23,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:23,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:23,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:23,803 INFO L124 PetriNetUnfolderBase]: 282/502 cut-off events. [2024-06-27 20:30:23,803 INFO L125 PetriNetUnfolderBase]: For 9037/9041 co-relation queries the response was YES. [2024-06-27 20:30:23,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 502 events. 282/502 cut-off events. For 9037/9041 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1889 event pairs, 67 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2830. Up to 329 conditions per place. [2024-06-27 20:30:23,807 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 43 changer transitions 0/98 dead transitions. [2024-06-27 20:30:23,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 1111 flow [2024-06-27 20:30:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:23,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 20:30:23,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-27 20:30:23,808 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 679 flow. Second operand 8 states and 95 transitions. [2024-06-27 20:30:23,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 1111 flow [2024-06-27 20:30:23,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 1046 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:23,818 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 787 flow [2024-06-27 20:30:23,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-06-27 20:30:23,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-27 20:30:23,819 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 787 flow [2024-06-27 20:30:23,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:23,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:23,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:23,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:30:23,819 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:23,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:23,820 INFO L85 PathProgramCache]: Analyzing trace with hash -5687394, now seen corresponding path program 2 times [2024-06-27 20:30:23,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:23,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259385901] [2024-06-27 20:30:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:24,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:24,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259385901] [2024-06-27 20:30:24,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259385901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:24,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:24,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:24,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119813941] [2024-06-27 20:30:24,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:24,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:24,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:24,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:24,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:24,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:24,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:24,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:24,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:24,479 INFO L124 PetriNetUnfolderBase]: 285/507 cut-off events. [2024-06-27 20:30:24,479 INFO L125 PetriNetUnfolderBase]: For 9758/9762 co-relation queries the response was YES. [2024-06-27 20:30:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 507 events. 285/507 cut-off events. For 9758/9762 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1938 event pairs, 61 based on Foata normal form. 5/512 useless extension candidates. Maximal degree in co-relation 2948. Up to 446 conditions per place. [2024-06-27 20:30:24,482 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-27 20:30:24,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 99 transitions, 1095 flow [2024-06-27 20:30:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 20:30:24,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-27 20:30:24,483 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 787 flow. Second operand 8 states and 86 transitions. [2024-06-27 20:30:24,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 99 transitions, 1095 flow [2024-06-27 20:30:24,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 997 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:24,494 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 803 flow [2024-06-27 20:30:24,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=803, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-06-27 20:30:24,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-27 20:30:24,495 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 803 flow [2024-06-27 20:30:24,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:24,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:24,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:24,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:30:24,495 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:24,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1741788169, now seen corresponding path program 5 times [2024-06-27 20:30:24,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:24,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961094011] [2024-06-27 20:30:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:24,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:24,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961094011] [2024-06-27 20:30:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961094011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892131139] [2024-06-27 20:30:24,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:24,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:24,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:24,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:24,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:24,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:24,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:25,157 INFO L124 PetriNetUnfolderBase]: 281/501 cut-off events. [2024-06-27 20:30:25,158 INFO L125 PetriNetUnfolderBase]: For 10020/10024 co-relation queries the response was YES. [2024-06-27 20:30:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 501 events. 281/501 cut-off events. For 10020/10024 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1887 event pairs, 67 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 2865. Up to 331 conditions per place. [2024-06-27 20:30:25,164 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 44 changer transitions 0/102 dead transitions. [2024-06-27 20:30:25,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 1127 flow [2024-06-27 20:30:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:30:25,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:30:25,166 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 803 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:30:25,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 1127 flow [2024-06-27 20:30:25,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 1088 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 20:30:25,180 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 857 flow [2024-06-27 20:30:25,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-27 20:30:25,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-27 20:30:25,180 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 857 flow [2024-06-27 20:30:25,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:25,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:25,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:25,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:30:25,181 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:25,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 3 times [2024-06-27 20:30:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97617386] [2024-06-27 20:30:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:25,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97617386] [2024-06-27 20:30:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97617386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:25,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:25,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:25,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626155983] [2024-06-27 20:30:25,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:25,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:25,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:25,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:25,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:25,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 857 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:25,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:25,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:25,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:25,870 INFO L124 PetriNetUnfolderBase]: 284/506 cut-off events. [2024-06-27 20:30:25,870 INFO L125 PetriNetUnfolderBase]: For 10733/10737 co-relation queries the response was YES. [2024-06-27 20:30:25,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 506 events. 284/506 cut-off events. For 10733/10737 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1933 event pairs, 60 based on Foata normal form. 5/511 useless extension candidates. Maximal degree in co-relation 3006. Up to 444 conditions per place. [2024-06-27 20:30:25,874 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2024-06-27 20:30:25,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1151 flow [2024-06-27 20:30:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:30:25,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:30:25,875 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 857 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:30:25,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1151 flow [2024-06-27 20:30:25,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 1065 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:25,886 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 856 flow [2024-06-27 20:30:25,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=856, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-27 20:30:25,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-27 20:30:25,887 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 856 flow [2024-06-27 20:30:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:25,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:25,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:30:25,888 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:25,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1664039, now seen corresponding path program 6 times [2024-06-27 20:30:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:25,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288208266] [2024-06-27 20:30:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288208266] [2024-06-27 20:30:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288208266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:26,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:26,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:26,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991344253] [2024-06-27 20:30:26,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:26,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:26,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:26,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:26,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:26,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:26,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:26,593 INFO L124 PetriNetUnfolderBase]: 280/500 cut-off events. [2024-06-27 20:30:26,594 INFO L125 PetriNetUnfolderBase]: For 11154/11158 co-relation queries the response was YES. [2024-06-27 20:30:26,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2964 conditions, 500 events. 280/500 cut-off events. For 11154/11158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1890 event pairs, 62 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2917. Up to 333 conditions per place. [2024-06-27 20:30:26,605 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 49 changer transitions 0/103 dead transitions. [2024-06-27 20:30:26,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1140 flow [2024-06-27 20:30:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:26,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 20:30:26,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-27 20:30:26,608 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 856 flow. Second operand 8 states and 90 transitions. [2024-06-27 20:30:26,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1140 flow [2024-06-27 20:30:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 1069 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:26,622 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 888 flow [2024-06-27 20:30:26,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-06-27 20:30:26,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-27 20:30:26,623 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 888 flow [2024-06-27 20:30:26,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:26,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:26,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:30:26,624 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:26,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:26,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1664256, now seen corresponding path program 4 times [2024-06-27 20:30:26,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:26,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296540837] [2024-06-27 20:30:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:27,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:27,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296540837] [2024-06-27 20:30:27,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296540837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:27,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:27,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:30:27,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103744501] [2024-06-27 20:30:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:27,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:30:27,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:30:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:30:27,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:27,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:27,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:27,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:27,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:27,223 INFO L124 PetriNetUnfolderBase]: 278/497 cut-off events. [2024-06-27 20:30:27,223 INFO L125 PetriNetUnfolderBase]: For 11402/11406 co-relation queries the response was YES. [2024-06-27 20:30:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 497 events. 278/497 cut-off events. For 11402/11406 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1894 event pairs, 59 based on Foata normal form. 5/502 useless extension candidates. Maximal degree in co-relation 2953. Up to 436 conditions per place. [2024-06-27 20:30:27,226 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 27 changer transitions 0/100 dead transitions. [2024-06-27 20:30:27,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 1110 flow [2024-06-27 20:30:27,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:27,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-27 20:30:27,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:30:27,227 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 888 flow. Second operand 8 states and 84 transitions. [2024-06-27 20:30:27,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 1110 flow [2024-06-27 20:30:27,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 984 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:27,239 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 821 flow [2024-06-27 20:30:27,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=821, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-06-27 20:30:27,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-27 20:30:27,240 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 821 flow [2024-06-27 20:30:27,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 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 20:30:27,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:27,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:30:27,241 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1941086, now seen corresponding path program 1 times [2024-06-27 20:30:27,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:27,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109929310] [2024-06-27 20:30:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:27,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109929310] [2024-06-27 20:30:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109929310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:27,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213520788] [2024-06-27 20:30:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:27,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:28,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:28,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:28,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:28,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:28,151 INFO L124 PetriNetUnfolderBase]: 276/493 cut-off events. [2024-06-27 20:30:28,151 INFO L125 PetriNetUnfolderBase]: For 11641/11641 co-relation queries the response was YES. [2024-06-27 20:30:28,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 493 events. 276/493 cut-off events. For 11641/11641 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1875 event pairs, 62 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2863. Up to 467 conditions per place. [2024-06-27 20:30:28,154 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-27 20:30:28,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 1055 flow [2024-06-27 20:30:28,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 20:30:28,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:30:28,155 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 821 flow. Second operand 9 states and 87 transitions. [2024-06-27 20:30:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 1055 flow [2024-06-27 20:30:28,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:28,167 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 821 flow [2024-06-27 20:30:28,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=821, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-27 20:30:28,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 20:30:28,167 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 821 flow [2024-06-27 20:30:28,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:28,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:28,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:30:28,168 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:28,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1493347194, now seen corresponding path program 1 times [2024-06-27 20:30:28,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:28,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916264124] [2024-06-27 20:30:28,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916264124] [2024-06-27 20:30:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916264124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160895638] [2024-06-27 20:30:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:28,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:28,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:28,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:28,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:28,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:28,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:28,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:28,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:29,157 INFO L124 PetriNetUnfolderBase]: 261/482 cut-off events. [2024-06-27 20:30:29,158 INFO L125 PetriNetUnfolderBase]: For 12826/12826 co-relation queries the response was YES. [2024-06-27 20:30:29,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 482 events. 261/482 cut-off events. For 12826/12826 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1918 event pairs, 33 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2847. Up to 358 conditions per place. [2024-06-27 20:30:29,161 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 76 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2024-06-27 20:30:29,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 1067 flow [2024-06-27 20:30:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:29,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-27 20:30:29,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:30:29,162 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 821 flow. Second operand 8 states and 92 transitions. [2024-06-27 20:30:29,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 1067 flow [2024-06-27 20:30:29,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 109 transitions, 986 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:30:29,175 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 798 flow [2024-06-27 20:30:29,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=798, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-06-27 20:30:29,176 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-27 20:30:29,176 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 798 flow [2024-06-27 20:30:29,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:29,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:29,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:29,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:30:29,177 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:29,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1493407644, now seen corresponding path program 2 times [2024-06-27 20:30:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:29,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171843236] [2024-06-27 20:30:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171843236] [2024-06-27 20:30:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171843236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079759424] [2024-06-27 20:30:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:29,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:29,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:29,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:29,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:29,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:29,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:29,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:30,154 INFO L124 PetriNetUnfolderBase]: 265/490 cut-off events. [2024-06-27 20:30:30,154 INFO L125 PetriNetUnfolderBase]: For 13837/13837 co-relation queries the response was YES. [2024-06-27 20:30:30,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 490 events. 265/490 cut-off events. For 13837/13837 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1963 event pairs, 48 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2911. Up to 364 conditions per place. [2024-06-27 20:30:30,158 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 70 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-27 20:30:30,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 1050 flow [2024-06-27 20:30:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:30,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:30:30,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:30:30,160 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 798 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:30:30,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 1050 flow [2024-06-27 20:30:30,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 1002 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:30,176 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 827 flow [2024-06-27 20:30:30,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-06-27 20:30:30,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 20:30:30,178 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 827 flow [2024-06-27 20:30:30,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:30,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:30,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:30:30,178 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:30,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash -381931536, now seen corresponding path program 1 times [2024-06-27 20:30:30,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:30,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847273678] [2024-06-27 20:30:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:30,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:30,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847273678] [2024-06-27 20:30:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847273678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520041670] [2024-06-27 20:30:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:31,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:31,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:31,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:31,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:31,298 INFO L124 PetriNetUnfolderBase]: 282/506 cut-off events. [2024-06-27 20:30:31,298 INFO L125 PetriNetUnfolderBase]: For 14097/14097 co-relation queries the response was YES. [2024-06-27 20:30:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 506 events. 282/506 cut-off events. For 14097/14097 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1952 event pairs, 50 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2990. Up to 410 conditions per place. [2024-06-27 20:30:31,301 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 29 changer transitions 0/110 dead transitions. [2024-06-27 20:30:31,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 1089 flow [2024-06-27 20:30:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:31,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 20:30:31,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:30:31,303 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 827 flow. Second operand 8 states and 88 transitions. [2024-06-27 20:30:31,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 1089 flow [2024-06-27 20:30:31,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 1020 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:31,318 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 826 flow [2024-06-27 20:30:31,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=826, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-27 20:30:31,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-27 20:30:31,318 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 826 flow [2024-06-27 20:30:31,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:31,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:31,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:30:31,319 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:31,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2064344296, now seen corresponding path program 1 times [2024-06-27 20:30:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:31,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994724609] [2024-06-27 20:30:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:31,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994724609] [2024-06-27 20:30:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994724609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:31,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501342475] [2024-06-27 20:30:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:31,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:31,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:31,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 826 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:31,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:31,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:31,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:32,109 INFO L124 PetriNetUnfolderBase]: 288/516 cut-off events. [2024-06-27 20:30:32,109 INFO L125 PetriNetUnfolderBase]: For 15357/15357 co-relation queries the response was YES. [2024-06-27 20:30:32,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 516 events. 288/516 cut-off events. For 15357/15357 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2002 event pairs, 48 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3050. Up to 425 conditions per place. [2024-06-27 20:30:32,126 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-27 20:30:32,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1122 flow [2024-06-27 20:30:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:30:32,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:30:32,130 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 826 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:30:32,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1122 flow [2024-06-27 20:30:32,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1035 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:32,146 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 820 flow [2024-06-27 20:30:32,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=820, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-27 20:30:32,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-27 20:30:32,147 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 820 flow [2024-06-27 20:30:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:32,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:32,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:32,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:30:32,148 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:32,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1611495324, now seen corresponding path program 3 times [2024-06-27 20:30:32,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:32,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994915331] [2024-06-27 20:30:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:32,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994915331] [2024-06-27 20:30:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994915331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034280014] [2024-06-27 20:30:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:32,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:32,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:32,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:32,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:32,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:33,183 INFO L124 PetriNetUnfolderBase]: 270/502 cut-off events. [2024-06-27 20:30:33,183 INFO L125 PetriNetUnfolderBase]: For 16645/16645 co-relation queries the response was YES. [2024-06-27 20:30:33,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 502 events. 270/502 cut-off events. For 16645/16645 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2019 event pairs, 49 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 3046. Up to 372 conditions per place. [2024-06-27 20:30:33,186 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 69 selfloop transitions, 28 changer transitions 0/111 dead transitions. [2024-06-27 20:30:33,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 1068 flow [2024-06-27 20:30:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 20:30:33,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-27 20:30:33,187 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 820 flow. Second operand 8 states and 94 transitions. [2024-06-27 20:30:33,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 1068 flow [2024-06-27 20:30:33,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 1003 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:33,204 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 835 flow [2024-06-27 20:30:33,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2024-06-27 20:30:33,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-27 20:30:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 835 flow [2024-06-27 20:30:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:33,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:33,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:33,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:30:33,205 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:33,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1611500284, now seen corresponding path program 2 times [2024-06-27 20:30:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702024378] [2024-06-27 20:30:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702024378] [2024-06-27 20:30:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702024378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641578126] [2024-06-27 20:30:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:33,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:33,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:33,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:33,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:33,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:33,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:33,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:33,998 INFO L124 PetriNetUnfolderBase]: 313/558 cut-off events. [2024-06-27 20:30:33,998 INFO L125 PetriNetUnfolderBase]: For 19220/19220 co-relation queries the response was YES. [2024-06-27 20:30:33,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 558 events. 313/558 cut-off events. For 19220/19220 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2209 event pairs, 58 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3419. Up to 398 conditions per place. [2024-06-27 20:30:34,001 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-27 20:30:34,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 1321 flow [2024-06-27 20:30:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:30:34,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:30:34,002 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 835 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:30:34,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 1321 flow [2024-06-27 20:30:34,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 1251 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:34,023 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 922 flow [2024-06-27 20:30:34,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-27 20:30:34,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-27 20:30:34,024 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 922 flow [2024-06-27 20:30:34,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:34,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:34,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:34,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:30:34,024 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:34,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2059702666, now seen corresponding path program 3 times [2024-06-27 20:30:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730779854] [2024-06-27 20:30:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730779854] [2024-06-27 20:30:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730779854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821147870] [2024-06-27 20:30:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:34,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:34,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:34,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:34,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:34,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:34,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:34,700 INFO L124 PetriNetUnfolderBase]: 319/568 cut-off events. [2024-06-27 20:30:34,700 INFO L125 PetriNetUnfolderBase]: For 20476/20476 co-relation queries the response was YES. [2024-06-27 20:30:34,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 568 events. 319/568 cut-off events. For 20476/20476 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2267 event pairs, 52 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3536. Up to 404 conditions per place. [2024-06-27 20:30:34,704 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-06-27 20:30:34,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 1372 flow [2024-06-27 20:30:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 20:30:34,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-27 20:30:34,705 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 922 flow. Second operand 9 states and 102 transitions. [2024-06-27 20:30:34,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 1372 flow [2024-06-27 20:30:34,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 1328 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:30:34,730 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 999 flow [2024-06-27 20:30:34,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=999, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2024-06-27 20:30:34,731 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-27 20:30:34,731 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 999 flow [2024-06-27 20:30:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:34,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:34,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:34,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:30:34,732 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:34,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2059696156, now seen corresponding path program 4 times [2024-06-27 20:30:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020281427] [2024-06-27 20:30:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:34,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:35,316 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 20:30:35,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:35,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020281427] [2024-06-27 20:30:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020281427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:35,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:35,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026011284] [2024-06-27 20:30:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:35,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:35,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:35,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:35,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:35,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:35,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 999 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:35,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:35,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:35,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:35,556 INFO L124 PetriNetUnfolderBase]: 315/562 cut-off events. [2024-06-27 20:30:35,557 INFO L125 PetriNetUnfolderBase]: For 20570/20570 co-relation queries the response was YES. [2024-06-27 20:30:35,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 562 events. 315/562 cut-off events. For 20570/20570 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2238 event pairs, 51 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 3545. Up to 401 conditions per place. [2024-06-27 20:30:35,561 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 47 changer transitions 0/122 dead transitions. [2024-06-27 20:30:35,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 122 transitions, 1353 flow [2024-06-27 20:30:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 20:30:35,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-27 20:30:35,581 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 999 flow. Second operand 9 states and 100 transitions. [2024-06-27 20:30:35,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 122 transitions, 1353 flow [2024-06-27 20:30:35,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1246 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:35,608 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 991 flow [2024-06-27 20:30:35,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=991, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-27 20:30:35,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-27 20:30:35,608 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 991 flow [2024-06-27 20:30:35,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:35,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:35,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:35,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:30:35,609 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:35,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1463532176, now seen corresponding path program 1 times [2024-06-27 20:30:35,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:35,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620955494] [2024-06-27 20:30:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:35,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:36,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620955494] [2024-06-27 20:30:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620955494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:36,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531576500] [2024-06-27 20:30:36,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:36,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:36,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:36,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 991 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:36,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:36,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:36,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:36,341 INFO L124 PetriNetUnfolderBase]: 318/567 cut-off events. [2024-06-27 20:30:36,341 INFO L125 PetriNetUnfolderBase]: For 20809/20809 co-relation queries the response was YES. [2024-06-27 20:30:36,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 567 events. 318/567 cut-off events. For 20809/20809 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2266 event pairs, 57 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3593. Up to 531 conditions per place. [2024-06-27 20:30:36,345 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 102 selfloop transitions, 16 changer transitions 0/120 dead transitions. [2024-06-27 20:30:36,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 120 transitions, 1281 flow [2024-06-27 20:30:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:36,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-27 20:30:36,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:30:36,353 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 991 flow. Second operand 9 states and 90 transitions. [2024-06-27 20:30:36,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 120 transitions, 1281 flow [2024-06-27 20:30:36,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 120 transitions, 1195 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:36,381 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 966 flow [2024-06-27 20:30:36,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=966, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-06-27 20:30:36,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-27 20:30:36,382 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 966 flow [2024-06-27 20:30:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:36,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:36,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:36,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:30:36,383 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:36,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:36,383 INFO L85 PathProgramCache]: Analyzing trace with hash 29837548, now seen corresponding path program 5 times [2024-06-27 20:30:36,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:36,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145842837] [2024-06-27 20:30:36,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:36,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:36,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:36,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145842837] [2024-06-27 20:30:36,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145842837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:36,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:36,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:36,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048720829] [2024-06-27 20:30:36,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:36,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:36,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:36,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:36,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:36,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:36,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:36,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:36,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:37,064 INFO L124 PetriNetUnfolderBase]: 334/594 cut-off events. [2024-06-27 20:30:37,064 INFO L125 PetriNetUnfolderBase]: For 23889/23893 co-relation queries the response was YES. [2024-06-27 20:30:37,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 594 events. 334/594 cut-off events. For 23889/23893 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2408 event pairs, 67 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3789. Up to 343 conditions per place. [2024-06-27 20:30:37,085 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 57 changer transitions 0/131 dead transitions. [2024-06-27 20:30:37,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 131 transitions, 1572 flow [2024-06-27 20:30:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 20:30:37,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-27 20:30:37,086 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 966 flow. Second operand 9 states and 107 transitions. [2024-06-27 20:30:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 131 transitions, 1572 flow [2024-06-27 20:30:37,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 1527 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:37,144 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 1128 flow [2024-06-27 20:30:37,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1128, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-06-27 20:30:37,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-27 20:30:37,145 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 1128 flow [2024-06-27 20:30:37,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:37,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:37,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:37,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:30:37,146 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:37,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:37,146 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-27 20:30:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:37,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213671498] [2024-06-27 20:30:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:37,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:37,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213671498] [2024-06-27 20:30:37,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213671498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:37,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:37,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:37,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998437760] [2024-06-27 20:30:37,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:37,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:37,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:37,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:37,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:37,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:37,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 1128 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:37,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:37,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:37,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:37,853 INFO L124 PetriNetUnfolderBase]: 337/599 cut-off events. [2024-06-27 20:30:37,853 INFO L125 PetriNetUnfolderBase]: For 24847/24851 co-relation queries the response was YES. [2024-06-27 20:30:37,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4030 conditions, 599 events. 337/599 cut-off events. For 24847/24851 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2449 event pairs, 63 based on Foata normal form. 5/604 useless extension candidates. Maximal degree in co-relation 3970. Up to 521 conditions per place. [2024-06-27 20:30:37,858 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 30 changer transitions 0/129 dead transitions. [2024-06-27 20:30:37,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 129 transitions, 1534 flow [2024-06-27 20:30:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:37,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:37,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:30:37,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:30:37,871 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 1128 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:30:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 129 transitions, 1534 flow [2024-06-27 20:30:37,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 1412 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:37,900 INFO L231 Difference]: Finished difference. Result has 131 places, 118 transitions, 1123 flow [2024-06-27 20:30:37,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1123, PETRI_PLACES=131, PETRI_TRANSITIONS=118} [2024-06-27 20:30:37,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-27 20:30:37,902 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 118 transitions, 1123 flow [2024-06-27 20:30:37,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:37,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:37,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:30:37,903 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:37,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 6 times [2024-06-27 20:30:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:37,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172322330] [2024-06-27 20:30:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172322330] [2024-06-27 20:30:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172322330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:38,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006492867] [2024-06-27 20:30:38,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:38,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:38,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 118 transitions, 1123 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:38,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:38,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:38,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:38,615 INFO L124 PetriNetUnfolderBase]: 343/609 cut-off events. [2024-06-27 20:30:38,615 INFO L125 PetriNetUnfolderBase]: For 26485/26489 co-relation queries the response was YES. [2024-06-27 20:30:38,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 609 events. 343/609 cut-off events. For 26485/26489 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2494 event pairs, 67 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3976. Up to 354 conditions per place. [2024-06-27 20:30:38,619 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 58 changer transitions 0/137 dead transitions. [2024-06-27 20:30:38,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 1693 flow [2024-06-27 20:30:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 20:30:38,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:30:38,629 INFO L175 Difference]: Start difference. First operand has 131 places, 118 transitions, 1123 flow. Second operand 9 states and 108 transitions. [2024-06-27 20:30:38,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 1693 flow [2024-06-27 20:30:38,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 1646 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:38,659 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1221 flow [2024-06-27 20:30:38,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1221, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-27 20:30:38,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 20:30:38,660 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1221 flow [2024-06-27 20:30:38,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:38,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:38,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:38,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:30:38,661 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:38,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 4 times [2024-06-27 20:30:38,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:38,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865950979] [2024-06-27 20:30:38,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:38,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:39,355 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 20:30:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865950979] [2024-06-27 20:30:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865950979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:39,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:39,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699661460] [2024-06-27 20:30:39,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:39,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:39,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-27 20:30:39,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:39,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:39,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-27 20:30:39,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:39,651 INFO L124 PetriNetUnfolderBase]: 309/569 cut-off events. [2024-06-27 20:30:39,651 INFO L125 PetriNetUnfolderBase]: For 26867/26875 co-relation queries the response was YES. [2024-06-27 20:30:39,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 569 events. 309/569 cut-off events. For 26867/26875 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2406 event pairs, 55 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3890. Up to 426 conditions per place. [2024-06-27 20:30:39,655 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 85 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2024-06-27 20:30:39,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 131 transitions, 1485 flow [2024-06-27 20:30:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:30:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:30:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-27 20:30:39,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:30:39,657 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1221 flow. Second operand 8 states and 93 transitions. [2024-06-27 20:30:39,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 131 transitions, 1485 flow [2024-06-27 20:30:39,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 131 transitions, 1364 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:39,691 INFO L231 Difference]: Finished difference. Result has 137 places, 120 transitions, 1168 flow [2024-06-27 20:30:39,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1168, PETRI_PLACES=137, PETRI_TRANSITIONS=120} [2024-06-27 20:30:39,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-27 20:30:39,692 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 120 transitions, 1168 flow [2024-06-27 20:30:39,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:39,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:39,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:39,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:30:39,693 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:39,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1839140140, now seen corresponding path program 7 times [2024-06-27 20:30:39,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:39,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934115330] [2024-06-27 20:30:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:39,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:40,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934115330] [2024-06-27 20:30:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934115330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396113305] [2024-06-27 20:30:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:40,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:40,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:40,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:40,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:40,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 120 transitions, 1168 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:40,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:40,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:40,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:40,490 INFO L124 PetriNetUnfolderBase]: 336/598 cut-off events. [2024-06-27 20:30:40,490 INFO L125 PetriNetUnfolderBase]: For 26042/26046 co-relation queries the response was YES. [2024-06-27 20:30:40,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 598 events. 336/598 cut-off events. For 26042/26046 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2448 event pairs, 68 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3870. Up to 346 conditions per place. [2024-06-27 20:30:40,494 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 61 changer transitions 0/135 dead transitions. [2024-06-27 20:30:40,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1636 flow [2024-06-27 20:30:40,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:40,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 20:30:40,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-27 20:30:40,495 INFO L175 Difference]: Start difference. First operand has 137 places, 120 transitions, 1168 flow. Second operand 9 states and 104 transitions. [2024-06-27 20:30:40,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1636 flow [2024-06-27 20:30:40,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1519 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:40,527 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 1178 flow [2024-06-27 20:30:40,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1178, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2024-06-27 20:30:40,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 20:30:40,528 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 1178 flow [2024-06-27 20:30:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:40,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:40,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:40,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:30:40,532 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:40,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1611059252, now seen corresponding path program 3 times [2024-06-27 20:30:40,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:40,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248912772] [2024-06-27 20:30:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:41,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248912772] [2024-06-27 20:30:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248912772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:41,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:41,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:41,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483482812] [2024-06-27 20:30:41,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:41,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:41,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 120 transitions, 1178 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:41,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:41,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:41,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:41,263 INFO L124 PetriNetUnfolderBase]: 339/603 cut-off events. [2024-06-27 20:30:41,263 INFO L125 PetriNetUnfolderBase]: For 26334/26338 co-relation queries the response was YES. [2024-06-27 20:30:41,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 603 events. 339/603 cut-off events. For 26334/26338 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2489 event pairs, 63 based on Foata normal form. 5/608 useless extension candidates. Maximal degree in co-relation 3938. Up to 524 conditions per place. [2024-06-27 20:30:41,267 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 33 changer transitions 0/133 dead transitions. [2024-06-27 20:30:41,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1580 flow [2024-06-27 20:30:41,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:41,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:41,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 20:30:41,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-27 20:30:41,284 INFO L175 Difference]: Start difference. First operand has 139 places, 120 transitions, 1178 flow. Second operand 9 states and 95 transitions. [2024-06-27 20:30:41,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1580 flow [2024-06-27 20:30:41,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1438 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:30:41,322 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1135 flow [2024-06-27 20:30:41,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-06-27 20:30:41,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-27 20:30:41,323 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1135 flow [2024-06-27 20:30:41,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:41,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:41,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:41,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:30:41,324 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:41,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:41,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1602488372, now seen corresponding path program 4 times [2024-06-27 20:30:41,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:41,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535966311] [2024-06-27 20:30:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:41,762 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 20:30:41,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:41,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535966311] [2024-06-27 20:30:41,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535966311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:41,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:41,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:41,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387856984] [2024-06-27 20:30:41,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:41,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:41,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:41,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:41,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:41,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:41,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:41,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:41,991 INFO L124 PetriNetUnfolderBase]: 342/607 cut-off events. [2024-06-27 20:30:41,992 INFO L125 PetriNetUnfolderBase]: For 27346/27346 co-relation queries the response was YES. [2024-06-27 20:30:41,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 607 events. 342/607 cut-off events. For 27346/27346 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2493 event pairs, 67 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 3865. Up to 581 conditions per place. [2024-06-27 20:30:41,996 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2024-06-27 20:30:41,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1451 flow [2024-06-27 20:30:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 20:30:41,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:30:41,997 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1135 flow. Second operand 9 states and 87 transitions. [2024-06-27 20:30:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1451 flow [2024-06-27 20:30:42,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 133 transitions, 1359 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:42,034 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1112 flow [2024-06-27 20:30:42,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-27 20:30:42,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-27 20:30:42,035 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1112 flow [2024-06-27 20:30:42,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:42,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:42,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:42,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:30:42,036 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:42,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785042, now seen corresponding path program 5 times [2024-06-27 20:30:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:42,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670716665] [2024-06-27 20:30:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:42,607 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 20:30:42,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:42,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670716665] [2024-06-27 20:30:42,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670716665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:42,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:42,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:42,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982818017] [2024-06-27 20:30:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:42,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:42,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:42,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1112 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:42,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:42,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:42,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:42,782 INFO L124 PetriNetUnfolderBase]: 340/605 cut-off events. [2024-06-27 20:30:42,783 INFO L125 PetriNetUnfolderBase]: For 27596/27600 co-relation queries the response was YES. [2024-06-27 20:30:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 605 events. 340/605 cut-off events. For 27596/27600 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2483 event pairs, 63 based on Foata normal form. 5/610 useless extension candidates. Maximal degree in co-relation 3777. Up to 526 conditions per place. [2024-06-27 20:30:42,787 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-06-27 20:30:42,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 1404 flow [2024-06-27 20:30:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:30:42,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:30:42,788 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1112 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:30:42,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 1404 flow [2024-06-27 20:30:42,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 134 transitions, 1343 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:42,825 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 1130 flow [2024-06-27 20:30:42,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-27 20:30:42,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-27 20:30:42,825 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 1130 flow [2024-06-27 20:30:42,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:42,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:42,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:30:42,826 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:42,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:42,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1611059500, now seen corresponding path program 8 times [2024-06-27 20:30:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:42,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850803468] [2024-06-27 20:30:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:42,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:43,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:43,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850803468] [2024-06-27 20:30:43,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850803468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:43,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:43,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:43,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123189821] [2024-06-27 20:30:43,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:43,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:43,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:43,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:43,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:43,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 1130 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:43,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:43,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:43,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:43,640 INFO L124 PetriNetUnfolderBase]: 356/631 cut-off events. [2024-06-27 20:30:43,641 INFO L125 PetriNetUnfolderBase]: For 31841/31845 co-relation queries the response was YES. [2024-06-27 20:30:43,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 631 events. 356/631 cut-off events. For 31841/31845 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2600 event pairs, 60 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4032. Up to 368 conditions per place. [2024-06-27 20:30:43,644 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 68 changer transitions 0/145 dead transitions. [2024-06-27 20:30:43,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 1780 flow [2024-06-27 20:30:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:43,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 20:30:43,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-27 20:30:43,645 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 1130 flow. Second operand 9 states and 106 transitions. [2024-06-27 20:30:43,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 1780 flow [2024-06-27 20:30:43,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 145 transitions, 1691 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:43,692 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 1234 flow [2024-06-27 20:30:43,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-06-27 20:30:43,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-27 20:30:43,692 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 1234 flow [2024-06-27 20:30:43,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:43,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:43,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:43,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:30:43,693 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:43,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:43,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1611066010, now seen corresponding path program 9 times [2024-06-27 20:30:43,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:43,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791165741] [2024-06-27 20:30:43,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:43,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:44,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:44,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791165741] [2024-06-27 20:30:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791165741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:44,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:44,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278773905] [2024-06-27 20:30:44,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:44,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:44,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:44,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:44,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:44,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:44,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 128 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:44,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:44,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:44,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:44,323 INFO L124 PetriNetUnfolderBase]: 352/625 cut-off events. [2024-06-27 20:30:44,323 INFO L125 PetriNetUnfolderBase]: For 31490/31494 co-relation queries the response was YES. [2024-06-27 20:30:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 625 events. 352/625 cut-off events. For 31490/31494 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2591 event pairs, 60 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4038. Up to 365 conditions per place. [2024-06-27 20:30:44,327 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2024-06-27 20:30:44,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 1738 flow [2024-06-27 20:30:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:44,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 20:30:44,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-27 20:30:44,328 INFO L175 Difference]: Start difference. First operand has 144 places, 128 transitions, 1234 flow. Second operand 9 states and 103 transitions. [2024-06-27 20:30:44,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 1738 flow [2024-06-27 20:30:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 1572 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 20:30:44,370 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 1211 flow [2024-06-27 20:30:44,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2024-06-27 20:30:44,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-27 20:30:44,371 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 1211 flow [2024-06-27 20:30:44,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:44,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:44,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:30:44,371 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:44,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:44,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785290, now seen corresponding path program 10 times [2024-06-27 20:30:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:44,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533700409] [2024-06-27 20:30:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:44,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:44,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533700409] [2024-06-27 20:30:44,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533700409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:44,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:44,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:30:44,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794694399] [2024-06-27 20:30:44,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:44,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:30:44,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:44,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:30:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:30:44,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:44,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:44,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:44,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:44,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:45,010 INFO L124 PetriNetUnfolderBase]: 348/619 cut-off events. [2024-06-27 20:30:45,011 INFO L125 PetriNetUnfolderBase]: For 30562/30566 co-relation queries the response was YES. [2024-06-27 20:30:45,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 619 events. 348/619 cut-off events. For 30562/30566 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2550 event pairs, 55 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3919. Up to 362 conditions per place. [2024-06-27 20:30:45,015 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 76 changer transitions 0/142 dead transitions. [2024-06-27 20:30:45,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 1623 flow [2024-06-27 20:30:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 20:30:45,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-27 20:30:45,017 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 1211 flow. Second operand 9 states and 101 transitions. [2024-06-27 20:30:45,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 1623 flow [2024-06-27 20:30:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 142 transitions, 1457 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:45,067 INFO L231 Difference]: Finished difference. Result has 148 places, 128 transitions, 1202 flow [2024-06-27 20:30:45,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1202, PETRI_PLACES=148, PETRI_TRANSITIONS=128} [2024-06-27 20:30:45,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-27 20:30:45,068 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 128 transitions, 1202 flow [2024-06-27 20:30:45,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:45,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:45,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:45,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:30:45,069 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:45,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:45,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1602477460, now seen corresponding path program 1 times [2024-06-27 20:30:45,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:45,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950326873] [2024-06-27 20:30:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:45,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:45,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950326873] [2024-06-27 20:30:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950326873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:45,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218044707] [2024-06-27 20:30:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:45,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:45,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 128 transitions, 1202 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:45,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:45,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:45,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:45,893 INFO L124 PetriNetUnfolderBase]: 345/613 cut-off events. [2024-06-27 20:30:45,893 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-06-27 20:30:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 613 events. 345/613 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2530 event pairs, 67 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3834. Up to 581 conditions per place. [2024-06-27 20:30:45,897 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2024-06-27 20:30:45,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 139 transitions, 1502 flow [2024-06-27 20:30:45,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-27 20:30:45,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-27 20:30:45,898 INFO L175 Difference]: Start difference. First operand has 148 places, 128 transitions, 1202 flow. Second operand 10 states and 94 transitions. [2024-06-27 20:30:45,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 139 transitions, 1502 flow [2024-06-27 20:30:45,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1334 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:30:45,948 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1068 flow [2024-06-27 20:30:45,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1068, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-27 20:30:45,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 20:30:45,949 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1068 flow [2024-06-27 20:30:45,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:45,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:45,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:45,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:30:45,950 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:45,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash 423396756, now seen corresponding path program 1 times [2024-06-27 20:30:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:45,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275503684] [2024-06-27 20:30:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:45,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:46,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275503684] [2024-06-27 20:30:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275503684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:46,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:46,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:46,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545996101] [2024-06-27 20:30:46,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:46,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:46,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:46,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:46,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:46,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1068 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:46,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:46,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:46,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:46,929 INFO L124 PetriNetUnfolderBase]: 349/621 cut-off events. [2024-06-27 20:30:46,929 INFO L125 PetriNetUnfolderBase]: For 30314/30314 co-relation queries the response was YES. [2024-06-27 20:30:46,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 621 events. 349/621 cut-off events. For 30314/30314 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2583 event pairs, 41 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3724. Up to 524 conditions per place. [2024-06-27 20:30:46,933 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-06-27 20:30:46,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 1414 flow [2024-06-27 20:30:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 20:30:46,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 20:30:46,935 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1068 flow. Second operand 9 states and 93 transitions. [2024-06-27 20:30:46,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 1414 flow [2024-06-27 20:30:46,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1376 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:46,988 INFO L231 Difference]: Finished difference. Result has 150 places, 129 transitions, 1088 flow [2024-06-27 20:30:46,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1088, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2024-06-27 20:30:46,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-27 20:30:46,989 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 129 transitions, 1088 flow [2024-06-27 20:30:46,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:46,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:46,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:46,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:30:46,989 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:46,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1045021866, now seen corresponding path program 2 times [2024-06-27 20:30:46,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:46,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090402485] [2024-06-27 20:30:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:46,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:47,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090402485] [2024-06-27 20:30:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090402485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089248603] [2024-06-27 20:30:47,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:47,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:47,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:47,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:47,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 129 transitions, 1088 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:47,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:47,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:47,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:48,040 INFO L124 PetriNetUnfolderBase]: 360/642 cut-off events. [2024-06-27 20:30:48,040 INFO L125 PetriNetUnfolderBase]: For 34084/34084 co-relation queries the response was YES. [2024-06-27 20:30:48,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 642 events. 360/642 cut-off events. For 34084/34084 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2735 event pairs, 57 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3963. Up to 515 conditions per place. [2024-06-27 20:30:48,044 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 28 changer transitions 0/149 dead transitions. [2024-06-27 20:30:48,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 149 transitions, 1558 flow [2024-06-27 20:30:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:30:48,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:30:48,046 INFO L175 Difference]: Start difference. First operand has 150 places, 129 transitions, 1088 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:30:48,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 149 transitions, 1558 flow [2024-06-27 20:30:48,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 1510 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:48,102 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1130 flow [2024-06-27 20:30:48,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-27 20:30:48,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-27 20:30:48,103 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1130 flow [2024-06-27 20:30:48,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:48,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:48,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:48,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:30:48,103 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:48,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:48,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025741, now seen corresponding path program 1 times [2024-06-27 20:30:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:48,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183334003] [2024-06-27 20:30:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:48,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183334003] [2024-06-27 20:30:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183334003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408769323] [2024-06-27 20:30:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:48,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:48,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:48,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:48,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:49,144 INFO L124 PetriNetUnfolderBase]: 358/639 cut-off events. [2024-06-27 20:30:49,144 INFO L125 PetriNetUnfolderBase]: For 33318/33318 co-relation queries the response was YES. [2024-06-27 20:30:49,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 639 events. 358/639 cut-off events. For 33318/33318 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2701 event pairs, 56 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 3937. Up to 532 conditions per place. [2024-06-27 20:30:49,148 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 33 changer transitions 0/148 dead transitions. [2024-06-27 20:30:49,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 148 transitions, 1474 flow [2024-06-27 20:30:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:30:49,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:30:49,149 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1130 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:30:49,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 148 transitions, 1474 flow [2024-06-27 20:30:49,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1415 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:49,216 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1145 flow [2024-06-27 20:30:49,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1145, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-27 20:30:49,217 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-27 20:30:49,217 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1145 flow [2024-06-27 20:30:49,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:49,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:49,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:49,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:30:49,217 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:49,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:49,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025586, now seen corresponding path program 3 times [2024-06-27 20:30:49,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:49,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351361758] [2024-06-27 20:30:49,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:49,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:49,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:49,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351361758] [2024-06-27 20:30:49,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351361758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:49,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:49,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:49,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240412529] [2024-06-27 20:30:49,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:49,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:49,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:49,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:49,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:50,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:50,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1145 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:50,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:50,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:50,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:50,306 INFO L124 PetriNetUnfolderBase]: 355/634 cut-off events. [2024-06-27 20:30:50,306 INFO L125 PetriNetUnfolderBase]: For 33162/33162 co-relation queries the response was YES. [2024-06-27 20:30:50,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 634 events. 355/634 cut-off events. For 33162/33162 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2655 event pairs, 55 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 3863. Up to 530 conditions per place. [2024-06-27 20:30:50,311 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 30 changer transitions 0/148 dead transitions. [2024-06-27 20:30:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 1487 flow [2024-06-27 20:30:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 20:30:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-27 20:30:50,312 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1145 flow. Second operand 9 states and 96 transitions. [2024-06-27 20:30:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 1487 flow [2024-06-27 20:30:50,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 148 transitions, 1360 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:30:50,382 INFO L231 Difference]: Finished difference. Result has 155 places, 131 transitions, 1083 flow [2024-06-27 20:30:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1083, PETRI_PLACES=155, PETRI_TRANSITIONS=131} [2024-06-27 20:30:50,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-27 20:30:50,383 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 131 transitions, 1083 flow [2024-06-27 20:30:50,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:50,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:50,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:50,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:30:50,384 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:50,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 427211988, now seen corresponding path program 1 times [2024-06-27 20:30:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:50,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106491457] [2024-06-27 20:30:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:50,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:50,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106491457] [2024-06-27 20:30:50,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106491457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:50,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:50,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788090852] [2024-06-27 20:30:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:50,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:50,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:50,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:50,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 131 transitions, 1083 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:50,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:50,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:50,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:51,195 INFO L124 PetriNetUnfolderBase]: 361/644 cut-off events. [2024-06-27 20:30:51,195 INFO L125 PetriNetUnfolderBase]: For 34371/34371 co-relation queries the response was YES. [2024-06-27 20:30:51,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 644 events. 361/644 cut-off events. For 34371/34371 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2717 event pairs, 53 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3868. Up to 545 conditions per place. [2024-06-27 20:30:51,200 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 122 selfloop transitions, 28 changer transitions 0/152 dead transitions. [2024-06-27 20:30:51,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1465 flow [2024-06-27 20:30:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:51,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:30:51,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:30:51,201 INFO L175 Difference]: Start difference. First operand has 155 places, 131 transitions, 1083 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:30:51,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1465 flow [2024-06-27 20:30:51,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 1400 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:51,292 INFO L231 Difference]: Finished difference. Result has 157 places, 133 transitions, 1107 flow [2024-06-27 20:30:51,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1107, PETRI_PLACES=157, PETRI_TRANSITIONS=133} [2024-06-27 20:30:51,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-27 20:30:51,292 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 133 transitions, 1107 flow [2024-06-27 20:30:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:51,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:51,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:51,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:30:51,293 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:51,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 410920520, now seen corresponding path program 4 times [2024-06-27 20:30:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:51,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751947030] [2024-06-27 20:30:51,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:51,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:52,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751947030] [2024-06-27 20:30:52,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751947030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:52,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:52,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:52,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736390076] [2024-06-27 20:30:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:52,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:52,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:52,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:52,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:52,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 133 transitions, 1107 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:52,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:52,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:52,334 INFO L124 PetriNetUnfolderBase]: 365/652 cut-off events. [2024-06-27 20:30:52,334 INFO L125 PetriNetUnfolderBase]: For 35696/35696 co-relation queries the response was YES. [2024-06-27 20:30:52,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 652 events. 365/652 cut-off events. For 35696/35696 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2782 event pairs, 56 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 3964. Up to 522 conditions per place. [2024-06-27 20:30:52,339 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 114 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2024-06-27 20:30:52,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1459 flow [2024-06-27 20:30:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:30:52,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:30:52,340 INFO L175 Difference]: Start difference. First operand has 157 places, 133 transitions, 1107 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:30:52,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1459 flow [2024-06-27 20:30:52,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1386 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:52,459 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1122 flow [2024-06-27 20:30:52,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1122, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-27 20:30:52,460 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-27 20:30:52,460 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1122 flow [2024-06-27 20:30:52,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:52,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:52,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:30:52,460 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:52,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 410926472, now seen corresponding path program 2 times [2024-06-27 20:30:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:52,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057572758] [2024-06-27 20:30:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:52,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057572758] [2024-06-27 20:30:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057572758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:52,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:52,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:52,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661585217] [2024-06-27 20:30:52,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:52,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:52,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:53,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:53,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1122 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:53,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:53,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:53,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:53,268 INFO L124 PetriNetUnfolderBase]: 411/726 cut-off events. [2024-06-27 20:30:53,268 INFO L125 PetriNetUnfolderBase]: For 48692/48692 co-relation queries the response was YES. [2024-06-27 20:30:53,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4847 conditions, 726 events. 411/726 cut-off events. For 48692/48692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 69 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4769. Up to 488 conditions per place. [2024-06-27 20:30:53,273 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-27 20:30:53,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 1824 flow [2024-06-27 20:30:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 20:30:53,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-27 20:30:53,274 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1122 flow. Second operand 10 states and 116 transitions. [2024-06-27 20:30:53,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 1824 flow [2024-06-27 20:30:53,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 1746 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:53,378 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 1290 flow [2024-06-27 20:30:53,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2024-06-27 20:30:53,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-27 20:30:53,379 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 1290 flow [2024-06-27 20:30:53,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:53,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:53,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:53,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:30:53,379 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:53,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:53,380 INFO L85 PathProgramCache]: Analyzing trace with hash 565586316, now seen corresponding path program 5 times [2024-06-27 20:30:53,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:53,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008937194] [2024-06-27 20:30:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:54,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:54,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:54,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008937194] [2024-06-27 20:30:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008937194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:54,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139439190] [2024-06-27 20:30:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:54,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:54,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:54,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:54,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 142 transitions, 1290 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:54,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:54,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:54,321 INFO L124 PetriNetUnfolderBase]: 422/747 cut-off events. [2024-06-27 20:30:54,321 INFO L125 PetriNetUnfolderBase]: For 53938/53938 co-relation queries the response was YES. [2024-06-27 20:30:54,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5279 conditions, 747 events. 422/747 cut-off events. For 53938/53938 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3276 event pairs, 65 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 5198. Up to 594 conditions per place. [2024-06-27 20:30:54,327 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 123 selfloop transitions, 35 changer transitions 0/160 dead transitions. [2024-06-27 20:30:54,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 1794 flow [2024-06-27 20:30:54,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:30:54,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:30:54,328 INFO L175 Difference]: Start difference. First operand has 163 places, 142 transitions, 1290 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:30:54,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 1794 flow [2024-06-27 20:30:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1745 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:54,432 INFO L231 Difference]: Finished difference. Result has 167 places, 144 transitions, 1353 flow [2024-06-27 20:30:54,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=167, PETRI_TRANSITIONS=144} [2024-06-27 20:30:54,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-27 20:30:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 144 transitions, 1353 flow [2024-06-27 20:30:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:54,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:54,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:54,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:30:54,433 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:54,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash 416282900, now seen corresponding path program 6 times [2024-06-27 20:30:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956052271] [2024-06-27 20:30:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:55,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956052271] [2024-06-27 20:30:55,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956052271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:55,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:55,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:55,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023564087] [2024-06-27 20:30:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:55,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:55,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:55,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:55,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 144 transitions, 1353 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:55,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:55,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:55,334 INFO L124 PetriNetUnfolderBase]: 419/742 cut-off events. [2024-06-27 20:30:55,335 INFO L125 PetriNetUnfolderBase]: For 52789/52789 co-relation queries the response was YES. [2024-06-27 20:30:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 742 events. 419/742 cut-off events. For 52789/52789 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3254 event pairs, 65 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 5140. Up to 612 conditions per place. [2024-06-27 20:30:55,340 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 120 selfloop transitions, 37 changer transitions 0/159 dead transitions. [2024-06-27 20:30:55,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 159 transitions, 1709 flow [2024-06-27 20:30:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:30:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:30:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:30:55,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:30:55,342 INFO L175 Difference]: Start difference. First operand has 167 places, 144 transitions, 1353 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:30:55,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 159 transitions, 1709 flow [2024-06-27 20:30:55,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 159 transitions, 1636 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 20:30:55,451 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 1358 flow [2024-06-27 20:30:55,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1358, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2024-06-27 20:30:55,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-27 20:30:55,452 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 1358 flow [2024-06-27 20:30:55,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:55,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:55,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:55,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:30:55,453 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:55,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1577734868, now seen corresponding path program 3 times [2024-06-27 20:30:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:55,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475645244] [2024-06-27 20:30:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:55,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:55,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475645244] [2024-06-27 20:30:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475645244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196784171] [2024-06-27 20:30:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:56,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:56,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 1358 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:56,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:56,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:56,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:56,300 INFO L124 PetriNetUnfolderBase]: 425/752 cut-off events. [2024-06-27 20:30:56,300 INFO L125 PetriNetUnfolderBase]: For 54624/54624 co-relation queries the response was YES. [2024-06-27 20:30:56,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 752 events. 425/752 cut-off events. For 54624/54624 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3312 event pairs, 56 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 5244. Up to 506 conditions per place. [2024-06-27 20:30:56,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 50 changer transitions 0/166 dead transitions. [2024-06-27 20:30:56,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 166 transitions, 2015 flow [2024-06-27 20:30:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:30:56,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-27 20:30:56,307 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 1358 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:30:56,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 166 transitions, 2015 flow [2024-06-27 20:30:56,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 166 transitions, 1935 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:30:56,408 INFO L231 Difference]: Finished difference. Result has 173 places, 146 transitions, 1416 flow [2024-06-27 20:30:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1416, PETRI_PLACES=173, PETRI_TRANSITIONS=146} [2024-06-27 20:30:56,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-27 20:30:56,409 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 146 transitions, 1416 flow [2024-06-27 20:30:56,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:56,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:56,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:56,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:30:56,409 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:56,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 416498102, now seen corresponding path program 4 times [2024-06-27 20:30:56,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:56,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750261211] [2024-06-27 20:30:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:56,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750261211] [2024-06-27 20:30:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750261211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:56,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:56,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006939488] [2024-06-27 20:30:56,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:56,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:56,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:56,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 146 transitions, 1416 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:56,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:56,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:56,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:57,144 INFO L124 PetriNetUnfolderBase]: 429/760 cut-off events. [2024-06-27 20:30:57,144 INFO L125 PetriNetUnfolderBase]: For 56852/56852 co-relation queries the response was YES. [2024-06-27 20:30:57,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5355 conditions, 760 events. 429/760 cut-off events. For 56852/56852 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3379 event pairs, 54 based on Foata normal form. 4/764 useless extension candidates. Maximal degree in co-relation 5269. Up to 508 conditions per place. [2024-06-27 20:30:57,149 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 57 changer transitions 0/167 dead transitions. [2024-06-27 20:30:57,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 167 transitions, 1965 flow [2024-06-27 20:30:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:30:57,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:30:57,150 INFO L175 Difference]: Start difference. First operand has 173 places, 146 transitions, 1416 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:30:57,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 167 transitions, 1965 flow [2024-06-27 20:30:57,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 1860 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:57,252 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1471 flow [2024-06-27 20:30:57,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1471, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-27 20:30:57,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-27 20:30:57,253 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1471 flow [2024-06-27 20:30:57,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:57,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:57,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:57,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:30:57,254 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:57,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash 573937823, now seen corresponding path program 1 times [2024-06-27 20:30:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925389354] [2024-06-27 20:30:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:57,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925389354] [2024-06-27 20:30:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925389354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:57,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:57,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:57,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250580147] [2024-06-27 20:30:57,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:57,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:57,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1471 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:57,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:57,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:57,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:58,183 INFO L124 PetriNetUnfolderBase]: 423/751 cut-off events. [2024-06-27 20:30:58,183 INFO L125 PetriNetUnfolderBase]: For 51925/51925 co-relation queries the response was YES. [2024-06-27 20:30:58,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 751 events. 423/751 cut-off events. For 51925/51925 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3327 event pairs, 55 based on Foata normal form. 3/754 useless extension candidates. Maximal degree in co-relation 5105. Up to 510 conditions per place. [2024-06-27 20:30:58,189 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 105 selfloop transitions, 62 changer transitions 0/169 dead transitions. [2024-06-27 20:30:58,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 169 transitions, 2037 flow [2024-06-27 20:30:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:30:58,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:30:58,192 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1471 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:30:58,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 169 transitions, 2037 flow [2024-06-27 20:30:58,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 169 transitions, 1885 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:58,347 INFO L231 Difference]: Finished difference. Result has 180 places, 151 transitions, 1540 flow [2024-06-27 20:30:58,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=180, PETRI_TRANSITIONS=151} [2024-06-27 20:30:58,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 20:30:58,348 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 151 transitions, 1540 flow [2024-06-27 20:30:58,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:58,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:58,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:30:58,348 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:58,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1577533058, now seen corresponding path program 5 times [2024-06-27 20:30:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073325478] [2024-06-27 20:30:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073325478] [2024-06-27 20:30:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073325478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801877855] [2024-06-27 20:30:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:58,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:58,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 151 transitions, 1540 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:58,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:58,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:58,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:30:59,221 INFO L124 PetriNetUnfolderBase]: 418/743 cut-off events. [2024-06-27 20:30:59,221 INFO L125 PetriNetUnfolderBase]: For 48031/48031 co-relation queries the response was YES. [2024-06-27 20:30:59,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5090 conditions, 743 events. 418/743 cut-off events. For 48031/48031 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3274 event pairs, 56 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5001. Up to 502 conditions per place. [2024-06-27 20:30:59,227 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 56 changer transitions 0/169 dead transitions. [2024-06-27 20:30:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 2046 flow [2024-06-27 20:30:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:30:59,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:30:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:30:59,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:30:59,228 INFO L175 Difference]: Start difference. First operand has 180 places, 151 transitions, 1540 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:30:59,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 2046 flow [2024-06-27 20:30:59,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1905 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:30:59,352 INFO L231 Difference]: Finished difference. Result has 183 places, 151 transitions, 1516 flow [2024-06-27 20:30:59,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1516, PETRI_PLACES=183, PETRI_TRANSITIONS=151} [2024-06-27 20:30:59,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-27 20:30:59,352 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 151 transitions, 1516 flow [2024-06-27 20:30:59,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:59,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:30:59,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:30:59,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:30:59,353 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:30:59,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:30:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1256343960, now seen corresponding path program 6 times [2024-06-27 20:30:59,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:30:59,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564848867] [2024-06-27 20:30:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:30:59,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:30:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:30:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:30:59,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:30:59,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564848867] [2024-06-27 20:30:59,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564848867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:30:59,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:30:59,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:30:59,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356239429] [2024-06-27 20:30:59,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:30:59,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:30:59,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:30:59,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:30:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:30:59,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:30:59,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 151 transitions, 1516 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:30:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:30:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:30:59,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:00,106 INFO L124 PetriNetUnfolderBase]: 457/808 cut-off events. [2024-06-27 20:31:00,107 INFO L125 PetriNetUnfolderBase]: For 62541/62545 co-relation queries the response was YES. [2024-06-27 20:31:00,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 808 events. 457/808 cut-off events. For 62541/62545 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3617 event pairs, 79 based on Foata normal form. 4/812 useless extension candidates. Maximal degree in co-relation 5664. Up to 348 conditions per place. [2024-06-27 20:31:00,119 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 72 changer transitions 0/181 dead transitions. [2024-06-27 20:31:00,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 181 transitions, 2464 flow [2024-06-27 20:31:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:31:00,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:31:00,120 INFO L175 Difference]: Start difference. First operand has 183 places, 151 transitions, 1516 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:31:00,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 181 transitions, 2464 flow [2024-06-27 20:31:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 2360 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:00,283 INFO L231 Difference]: Finished difference. Result has 186 places, 159 transitions, 1696 flow [2024-06-27 20:31:00,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1696, PETRI_PLACES=186, PETRI_TRANSITIONS=159} [2024-06-27 20:31:00,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-27 20:31:00,284 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 159 transitions, 1696 flow [2024-06-27 20:31:00,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:00,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:00,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:00,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:31:00,285 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:00,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1256344239, now seen corresponding path program 2 times [2024-06-27 20:31:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:00,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906209335] [2024-06-27 20:31:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:00,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906209335] [2024-06-27 20:31:00,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906209335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:00,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:00,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:00,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528708279] [2024-06-27 20:31:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:00,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:00,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:00,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:01,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:01,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 159 transitions, 1696 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:01,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:01,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:01,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:01,225 INFO L124 PetriNetUnfolderBase]: 451/799 cut-off events. [2024-06-27 20:31:01,225 INFO L125 PetriNetUnfolderBase]: For 57288/57292 co-relation queries the response was YES. [2024-06-27 20:31:01,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 799 events. 451/799 cut-off events. For 57288/57292 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3575 event pairs, 74 based on Foata normal form. 3/802 useless extension candidates. Maximal degree in co-relation 5598. Up to 415 conditions per place. [2024-06-27 20:31:01,232 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 103 selfloop transitions, 78 changer transitions 0/183 dead transitions. [2024-06-27 20:31:01,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 183 transitions, 2588 flow [2024-06-27 20:31:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:01,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:31:01,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:31:01,233 INFO L175 Difference]: Start difference. First operand has 186 places, 159 transitions, 1696 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:31:01,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 183 transitions, 2588 flow [2024-06-27 20:31:01,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 183 transitions, 2404 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:01,361 INFO L231 Difference]: Finished difference. Result has 192 places, 164 transitions, 1811 flow [2024-06-27 20:31:01,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=192, PETRI_TRANSITIONS=164} [2024-06-27 20:31:01,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-27 20:31:01,361 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 164 transitions, 1811 flow [2024-06-27 20:31:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:01,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:01,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:01,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:31:01,362 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:01,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1178918094, now seen corresponding path program 7 times [2024-06-27 20:31:01,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:01,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976718834] [2024-06-27 20:31:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:01,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:02,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976718834] [2024-06-27 20:31:02,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976718834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:02,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:02,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931520929] [2024-06-27 20:31:02,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:02,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:02,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:02,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:02,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:02,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:02,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 164 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:02,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:02,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:02,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:02,343 INFO L124 PetriNetUnfolderBase]: 455/807 cut-off events. [2024-06-27 20:31:02,344 INFO L125 PetriNetUnfolderBase]: For 57471/57475 co-relation queries the response was YES. [2024-06-27 20:31:02,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5808 conditions, 807 events. 455/807 cut-off events. For 57471/57475 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3637 event pairs, 66 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 5713. Up to 635 conditions per place. [2024-06-27 20:31:02,349 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 131 selfloop transitions, 45 changer transitions 0/178 dead transitions. [2024-06-27 20:31:02,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 178 transitions, 2219 flow [2024-06-27 20:31:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:31:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:31:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 20:31:02,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-27 20:31:02,350 INFO L175 Difference]: Start difference. First operand has 192 places, 164 transitions, 1811 flow. Second operand 9 states and 98 transitions. [2024-06-27 20:31:02,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 178 transitions, 2219 flow [2024-06-27 20:31:02,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 178 transitions, 2110 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:31:02,489 INFO L231 Difference]: Finished difference. Result has 196 places, 165 transitions, 1818 flow [2024-06-27 20:31:02,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1818, PETRI_PLACES=196, PETRI_TRANSITIONS=165} [2024-06-27 20:31:02,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-27 20:31:02,490 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 165 transitions, 1818 flow [2024-06-27 20:31:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:02,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:02,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:02,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:31:02,490 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:02,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1853265062, now seen corresponding path program 7 times [2024-06-27 20:31:02,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:02,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687814642] [2024-06-27 20:31:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:02,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:03,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687814642] [2024-06-27 20:31:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687814642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:03,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:03,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:03,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292677962] [2024-06-27 20:31:03,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:03,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:03,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:03,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:03,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:03,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 165 transitions, 1818 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:03,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:03,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:03,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:03,376 INFO L124 PetriNetUnfolderBase]: 496/873 cut-off events. [2024-06-27 20:31:03,377 INFO L125 PetriNetUnfolderBase]: For 72993/72997 co-relation queries the response was YES. [2024-06-27 20:31:03,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 873 events. 496/873 cut-off events. For 72993/72997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3985 event pairs, 56 based on Foata normal form. 2/875 useless extension candidates. Maximal degree in co-relation 6607. Up to 378 conditions per place. [2024-06-27 20:31:03,384 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 98 selfloop transitions, 94 changer transitions 0/194 dead transitions. [2024-06-27 20:31:03,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 194 transitions, 2824 flow [2024-06-27 20:31:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:03,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:31:03,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:31:03,394 INFO L175 Difference]: Start difference. First operand has 196 places, 165 transitions, 1818 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:31:03,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 194 transitions, 2824 flow [2024-06-27 20:31:03,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 194 transitions, 2718 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:03,556 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 2080 flow [2024-06-27 20:31:03,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2024-06-27 20:31:03,557 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-27 20:31:03,557 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 2080 flow [2024-06-27 20:31:03,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:03,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:03,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:03,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:31:03,557 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:03,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1450068168, now seen corresponding path program 8 times [2024-06-27 20:31:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759833699] [2024-06-27 20:31:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:04,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:04,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759833699] [2024-06-27 20:31:04,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759833699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:04,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:04,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:31:04,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681179887] [2024-06-27 20:31:04,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:04,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:31:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:31:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:31:04,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:04,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 2080 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:04,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:04,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:04,483 INFO L124 PetriNetUnfolderBase]: 500/881 cut-off events. [2024-06-27 20:31:04,483 INFO L125 PetriNetUnfolderBase]: For 75667/75671 co-relation queries the response was YES. [2024-06-27 20:31:04,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 881 events. 500/881 cut-off events. For 75667/75671 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4034 event pairs, 76 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 6857. Up to 709 conditions per place. [2024-06-27 20:31:04,491 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 136 selfloop transitions, 50 changer transitions 0/188 dead transitions. [2024-06-27 20:31:04,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 188 transitions, 2510 flow [2024-06-27 20:31:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:31:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:31:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 20:31:04,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-27 20:31:04,492 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 2080 flow. Second operand 9 states and 97 transitions. [2024-06-27 20:31:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 188 transitions, 2510 flow [2024-06-27 20:31:04,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 188 transitions, 2344 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 20:31:04,663 INFO L231 Difference]: Finished difference. Result has 204 places, 175 transitions, 2042 flow [2024-06-27 20:31:04,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2042, PETRI_PLACES=204, PETRI_TRANSITIONS=175} [2024-06-27 20:31:04,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-27 20:31:04,664 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 175 transitions, 2042 flow [2024-06-27 20:31:04,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:04,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:04,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:04,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:31:04,665 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:04,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:04,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1596764552, now seen corresponding path program 8 times [2024-06-27 20:31:04,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:04,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327821420] [2024-06-27 20:31:04,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:04,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:05,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:05,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327821420] [2024-06-27 20:31:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327821420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:05,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369842138] [2024-06-27 20:31:05,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:05,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:05,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:05,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:05,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:05,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:05,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 175 transitions, 2042 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:05,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:05,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:05,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:05,530 INFO L124 PetriNetUnfolderBase]: 526/923 cut-off events. [2024-06-27 20:31:05,531 INFO L125 PetriNetUnfolderBase]: For 87193/87197 co-relation queries the response was YES. [2024-06-27 20:31:05,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7391 conditions, 923 events. 526/923 cut-off events. For 87193/87197 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4272 event pairs, 74 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 7291. Up to 400 conditions per place. [2024-06-27 20:31:05,537 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 89 changer transitions 0/202 dead transitions. [2024-06-27 20:31:05,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 3162 flow [2024-06-27 20:31:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:05,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:31:05,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:31:05,538 INFO L175 Difference]: Start difference. First operand has 204 places, 175 transitions, 2042 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:31:05,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 3162 flow [2024-06-27 20:31:05,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 202 transitions, 3044 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:05,729 INFO L231 Difference]: Finished difference. Result has 208 places, 182 transitions, 2258 flow [2024-06-27 20:31:05,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2258, PETRI_PLACES=208, PETRI_TRANSITIONS=182} [2024-06-27 20:31:05,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-27 20:31:05,730 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 182 transitions, 2258 flow [2024-06-27 20:31:05,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:05,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:05,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:31:05,731 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:05,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1596771992, now seen corresponding path program 9 times [2024-06-27 20:31:05,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:05,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769113105] [2024-06-27 20:31:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:05,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:06,278 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 20:31:06,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:06,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769113105] [2024-06-27 20:31:06,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769113105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:06,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:06,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:06,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063016993] [2024-06-27 20:31:06,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:06,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:06,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:06,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:06,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:06,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 182 transitions, 2258 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:06,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:06,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:06,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:06,580 INFO L124 PetriNetUnfolderBase]: 520/915 cut-off events. [2024-06-27 20:31:06,581 INFO L125 PetriNetUnfolderBase]: For 85572/85576 co-relation queries the response was YES. [2024-06-27 20:31:06,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 915 events. 520/915 cut-off events. For 85572/85576 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4225 event pairs, 69 based on Foata normal form. 4/919 useless extension candidates. Maximal degree in co-relation 7139. Up to 399 conditions per place. [2024-06-27 20:31:06,589 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 110 selfloop transitions, 89 changer transitions 0/201 dead transitions. [2024-06-27 20:31:06,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 201 transitions, 3112 flow [2024-06-27 20:31:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:31:06,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 20:31:06,590 INFO L175 Difference]: Start difference. First operand has 208 places, 182 transitions, 2258 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:31:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 201 transitions, 3112 flow [2024-06-27 20:31:06,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 201 transitions, 2806 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:06,771 INFO L231 Difference]: Finished difference. Result has 210 places, 182 transitions, 2138 flow [2024-06-27 20:31:06,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2138, PETRI_PLACES=210, PETRI_TRANSITIONS=182} [2024-06-27 20:31:06,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-27 20:31:06,772 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 182 transitions, 2138 flow [2024-06-27 20:31:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:06,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:06,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:06,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:31:06,773 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:06,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1853272781, now seen corresponding path program 3 times [2024-06-27 20:31:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151780393] [2024-06-27 20:31:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:07,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:07,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151780393] [2024-06-27 20:31:07,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151780393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:07,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:07,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:07,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320205809] [2024-06-27 20:31:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:07,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:07,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:07,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:07,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:07,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 182 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:07,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:07,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:07,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:07,765 INFO L124 PetriNetUnfolderBase]: 541/950 cut-off events. [2024-06-27 20:31:07,766 INFO L125 PetriNetUnfolderBase]: For 89880/89884 co-relation queries the response was YES. [2024-06-27 20:31:07,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7525 conditions, 950 events. 541/950 cut-off events. For 89880/89884 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4438 event pairs, 60 based on Foata normal form. 3/953 useless extension candidates. Maximal degree in co-relation 7422. Up to 540 conditions per place. [2024-06-27 20:31:07,773 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 105 selfloop transitions, 99 changer transitions 0/206 dead transitions. [2024-06-27 20:31:07,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 206 transitions, 3102 flow [2024-06-27 20:31:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:31:07,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:31:07,775 INFO L175 Difference]: Start difference. First operand has 210 places, 182 transitions, 2138 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:31:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 206 transitions, 3102 flow [2024-06-27 20:31:07,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 206 transitions, 2915 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:07,976 INFO L231 Difference]: Finished difference. Result has 212 places, 187 transitions, 2257 flow [2024-06-27 20:31:07,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2257, PETRI_PLACES=212, PETRI_TRANSITIONS=187} [2024-06-27 20:31:07,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-27 20:31:07,977 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 187 transitions, 2257 flow [2024-06-27 20:31:07,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:07,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:07,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:07,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:31:07,977 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:07,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1176296038, now seen corresponding path program 9 times [2024-06-27 20:31:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408931] [2024-06-27 20:31:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:07,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:08,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:08,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:08,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408931] [2024-06-27 20:31:08,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:08,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:08,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:08,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428465154] [2024-06-27 20:31:08,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:08,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:08,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 187 transitions, 2257 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:08,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:08,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:08,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:09,055 INFO L124 PetriNetUnfolderBase]: 545/958 cut-off events. [2024-06-27 20:31:09,055 INFO L125 PetriNetUnfolderBase]: For 89909/89913 co-relation queries the response was YES. [2024-06-27 20:31:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7658 conditions, 958 events. 545/958 cut-off events. For 89909/89913 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4506 event pairs, 77 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 7554. Up to 757 conditions per place. [2024-06-27 20:31:09,063 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 152 selfloop transitions, 48 changer transitions 0/202 dead transitions. [2024-06-27 20:31:09,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 202 transitions, 2855 flow [2024-06-27 20:31:09,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:31:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:31:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 20:31:09,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:09,066 INFO L175 Difference]: Start difference. First operand has 212 places, 187 transitions, 2257 flow. Second operand 9 states and 99 transitions. [2024-06-27 20:31:09,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 202 transitions, 2855 flow [2024-06-27 20:31:09,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 202 transitions, 2691 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:31:09,311 INFO L231 Difference]: Finished difference. Result has 216 places, 188 transitions, 2217 flow [2024-06-27 20:31:09,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2217, PETRI_PLACES=216, PETRI_TRANSITIONS=188} [2024-06-27 20:31:09,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-27 20:31:09,312 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 188 transitions, 2217 flow [2024-06-27 20:31:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:09,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:09,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:09,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:31:09,312 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:09,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1596562742, now seen corresponding path program 10 times [2024-06-27 20:31:09,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:09,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964895736] [2024-06-27 20:31:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:09,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:09,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964895736] [2024-06-27 20:31:09,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964895736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:09,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:09,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:09,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748989423] [2024-06-27 20:31:09,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:09,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:09,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:09,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:09,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 188 transitions, 2217 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:09,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:09,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:09,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:10,108 INFO L124 PetriNetUnfolderBase]: 541/952 cut-off events. [2024-06-27 20:31:10,108 INFO L125 PetriNetUnfolderBase]: For 88478/88482 co-relation queries the response was YES. [2024-06-27 20:31:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 952 events. 541/952 cut-off events. For 88478/88482 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4467 event pairs, 67 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 7270. Up to 420 conditions per place. [2024-06-27 20:31:10,116 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 101 changer transitions 0/207 dead transitions. [2024-06-27 20:31:10,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 207 transitions, 3101 flow [2024-06-27 20:31:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:10,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:31:10,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-27 20:31:10,130 INFO L175 Difference]: Start difference. First operand has 216 places, 188 transitions, 2217 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:31:10,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 207 transitions, 3101 flow [2024-06-27 20:31:10,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 207 transitions, 2955 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:10,347 INFO L231 Difference]: Finished difference. Result has 218 places, 188 transitions, 2278 flow [2024-06-27 20:31:10,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2071, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2278, PETRI_PLACES=218, PETRI_TRANSITIONS=188} [2024-06-27 20:31:10,348 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-27 20:31:10,348 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 188 transitions, 2278 flow [2024-06-27 20:31:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:10,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:10,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:31:10,348 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:10,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 919401298, now seen corresponding path program 11 times [2024-06-27 20:31:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140311202] [2024-06-27 20:31:10,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140311202] [2024-06-27 20:31:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140311202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697911169] [2024-06-27 20:31:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:10,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:10,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:10,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 188 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:10,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:10,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:10,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:11,241 INFO L124 PetriNetUnfolderBase]: 547/962 cut-off events. [2024-06-27 20:31:11,241 INFO L125 PetriNetUnfolderBase]: For 90459/90463 co-relation queries the response was YES. [2024-06-27 20:31:11,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7515 conditions, 962 events. 547/962 cut-off events. For 90459/90463 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4537 event pairs, 87 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 7411. Up to 422 conditions per place. [2024-06-27 20:31:11,250 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 103 changer transitions 0/209 dead transitions. [2024-06-27 20:31:11,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 209 transitions, 3214 flow [2024-06-27 20:31:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:31:11,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-27 20:31:11,251 INFO L175 Difference]: Start difference. First operand has 218 places, 188 transitions, 2278 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:31:11,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 209 transitions, 3214 flow [2024-06-27 20:31:11,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 209 transitions, 2968 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:11,457 INFO L231 Difference]: Finished difference. Result has 219 places, 190 transitions, 2285 flow [2024-06-27 20:31:11,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2285, PETRI_PLACES=219, PETRI_TRANSITIONS=190} [2024-06-27 20:31:11,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-27 20:31:11,457 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 190 transitions, 2285 flow [2024-06-27 20:31:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:11,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:11,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:11,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:31:11,458 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:11,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:11,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1126062178, now seen corresponding path program 12 times [2024-06-27 20:31:11,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:11,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274874000] [2024-06-27 20:31:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:11,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:11,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:11,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274874000] [2024-06-27 20:31:11,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274874000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:11,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:11,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:11,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453189490] [2024-06-27 20:31:11,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:11,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:11,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:11,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:11,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 190 transitions, 2285 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:11,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:11,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:11,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:12,128 INFO L124 PetriNetUnfolderBase]: 547/962 cut-off events. [2024-06-27 20:31:12,128 INFO L125 PetriNetUnfolderBase]: For 93292/93296 co-relation queries the response was YES. [2024-06-27 20:31:12,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7292 conditions, 962 events. 547/962 cut-off events. For 93292/93296 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4556 event pairs, 70 based on Foata normal form. 4/966 useless extension candidates. Maximal degree in co-relation 7189. Up to 424 conditions per place. [2024-06-27 20:31:12,135 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 102 changer transitions 0/210 dead transitions. [2024-06-27 20:31:12,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 210 transitions, 3071 flow [2024-06-27 20:31:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:31:12,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:31:12,137 INFO L175 Difference]: Start difference. First operand has 219 places, 190 transitions, 2285 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:31:12,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 210 transitions, 3071 flow [2024-06-27 20:31:12,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 210 transitions, 2863 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:12,322 INFO L231 Difference]: Finished difference. Result has 222 places, 192 transitions, 2319 flow [2024-06-27 20:31:12,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2319, PETRI_PLACES=222, PETRI_TRANSITIONS=192} [2024-06-27 20:31:12,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-27 20:31:12,323 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 192 transitions, 2319 flow [2024-06-27 20:31:12,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:12,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:12,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:31:12,324 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:12,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1862469551, now seen corresponding path program 4 times [2024-06-27 20:31:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573010638] [2024-06-27 20:31:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:12,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:12,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573010638] [2024-06-27 20:31:12,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573010638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:12,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:12,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240648380] [2024-06-27 20:31:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:13,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:13,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 192 transitions, 2319 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:13,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:13,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:13,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:13,286 INFO L124 PetriNetUnfolderBase]: 548/964 cut-off events. [2024-06-27 20:31:13,286 INFO L125 PetriNetUnfolderBase]: For 87531/87531 co-relation queries the response was YES. [2024-06-27 20:31:13,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 964 events. 548/964 cut-off events. For 87531/87531 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4556 event pairs, 95 based on Foata normal form. 3/967 useless extension candidates. Maximal degree in co-relation 7073. Up to 915 conditions per place. [2024-06-27 20:31:13,295 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-06-27 20:31:13,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 207 transitions, 2946 flow [2024-06-27 20:31:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-27 20:31:13,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:31:13,296 INFO L175 Difference]: Start difference. First operand has 222 places, 192 transitions, 2319 flow. Second operand 10 states and 100 transitions. [2024-06-27 20:31:13,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 207 transitions, 2946 flow [2024-06-27 20:31:13,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 207 transitions, 2742 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:13,501 INFO L231 Difference]: Finished difference. Result has 225 places, 194 transitions, 2199 flow [2024-06-27 20:31:13,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2199, PETRI_PLACES=225, PETRI_TRANSITIONS=194} [2024-06-27 20:31:13,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-27 20:31:13,501 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 194 transitions, 2199 flow [2024-06-27 20:31:13,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:13,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:13,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:13,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:31:13,502 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:13,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1170785788, now seen corresponding path program 10 times [2024-06-27 20:31:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:13,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068353062] [2024-06-27 20:31:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068353062] [2024-06-27 20:31:14,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068353062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:14,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:14,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:14,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899355912] [2024-06-27 20:31:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:14,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:14,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:14,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 194 transitions, 2199 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:14,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:14,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:14,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:14,595 INFO L124 PetriNetUnfolderBase]: 545/959 cut-off events. [2024-06-27 20:31:14,595 INFO L125 PetriNetUnfolderBase]: For 81817/81817 co-relation queries the response was YES. [2024-06-27 20:31:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 959 events. 545/959 cut-off events. For 81817/81817 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4535 event pairs, 74 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 6705. Up to 788 conditions per place. [2024-06-27 20:31:14,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 47 changer transitions 0/212 dead transitions. [2024-06-27 20:31:14,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 212 transitions, 2700 flow [2024-06-27 20:31:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:14,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:14,604 INFO L175 Difference]: Start difference. First operand has 225 places, 194 transitions, 2199 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:14,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 212 transitions, 2700 flow [2024-06-27 20:31:14,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 212 transitions, 2611 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:14,801 INFO L231 Difference]: Finished difference. Result has 228 places, 196 transitions, 2232 flow [2024-06-27 20:31:14,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2232, PETRI_PLACES=228, PETRI_TRANSITIONS=196} [2024-06-27 20:31:14,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-27 20:31:14,801 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 196 transitions, 2232 flow [2024-06-27 20:31:14,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:14,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:14,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:31:14,802 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:14,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1856167327, now seen corresponding path program 5 times [2024-06-27 20:31:14,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:14,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996730349] [2024-06-27 20:31:14,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996730349] [2024-06-27 20:31:15,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996730349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:15,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:15,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:15,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406798767] [2024-06-27 20:31:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:15,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:15,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:15,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:15,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:15,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 196 transitions, 2232 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:15,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:15,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:15,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:15,823 INFO L124 PetriNetUnfolderBase]: 543/956 cut-off events. [2024-06-27 20:31:15,823 INFO L125 PetriNetUnfolderBase]: For 78592/78592 co-relation queries the response was YES. [2024-06-27 20:31:15,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6736 conditions, 956 events. 543/956 cut-off events. For 78592/78592 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4507 event pairs, 94 based on Foata normal form. 1/957 useless extension candidates. Maximal degree in co-relation 6629. Up to 901 conditions per place. [2024-06-27 20:31:15,831 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-27 20:31:15,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 209 transitions, 2828 flow [2024-06-27 20:31:15,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:31:15,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 20:31:15,832 INFO L175 Difference]: Start difference. First operand has 228 places, 196 transitions, 2232 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:31:15,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 209 transitions, 2828 flow [2024-06-27 20:31:16,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 209 transitions, 2694 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:16,038 INFO L231 Difference]: Finished difference. Result has 231 places, 196 transitions, 2147 flow [2024-06-27 20:31:16,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=231, PETRI_TRANSITIONS=196} [2024-06-27 20:31:16,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 20:31:16,039 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 196 transitions, 2147 flow [2024-06-27 20:31:16,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:16,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:16,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:16,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:31:16,039 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:16,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 13 times [2024-06-27 20:31:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145783842] [2024-06-27 20:31:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:16,553 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 20:31:16,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:16,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145783842] [2024-06-27 20:31:16,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145783842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:16,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:16,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:16,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219724805] [2024-06-27 20:31:16,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:16,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:16,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:16,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:16,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:16,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 196 transitions, 2147 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:16,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:16,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:16,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:16,909 INFO L124 PetriNetUnfolderBase]: 549/967 cut-off events. [2024-06-27 20:31:16,909 INFO L125 PetriNetUnfolderBase]: For 83488/83492 co-relation queries the response was YES. [2024-06-27 20:31:16,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 967 events. 549/967 cut-off events. For 83488/83492 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4578 event pairs, 88 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 6610. Up to 422 conditions per place. [2024-06-27 20:31:16,917 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 93 changer transitions 0/216 dead transitions. [2024-06-27 20:31:16,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 216 transitions, 3121 flow [2024-06-27 20:31:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:31:16,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:31:16,918 INFO L175 Difference]: Start difference. First operand has 231 places, 196 transitions, 2147 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:31:16,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 216 transitions, 3121 flow [2024-06-27 20:31:17,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 216 transitions, 3051 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:17,126 INFO L231 Difference]: Finished difference. Result has 231 places, 198 transitions, 2310 flow [2024-06-27 20:31:17,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2310, PETRI_PLACES=231, PETRI_TRANSITIONS=198} [2024-06-27 20:31:17,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 20:31:17,127 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 198 transitions, 2310 flow [2024-06-27 20:31:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:17,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:17,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:31:17,127 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 6 times [2024-06-27 20:31:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776146909] [2024-06-27 20:31:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:17,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:17,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776146909] [2024-06-27 20:31:17,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776146909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:17,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:17,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:17,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181086051] [2024-06-27 20:31:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:17,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:17,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:17,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:17,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 198 transitions, 2310 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:17,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:17,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:18,073 INFO L124 PetriNetUnfolderBase]: 541/954 cut-off events. [2024-06-27 20:31:18,073 INFO L125 PetriNetUnfolderBase]: For 80399/80403 co-relation queries the response was YES. [2024-06-27 20:31:18,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6620 conditions, 954 events. 541/954 cut-off events. For 80399/80403 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4509 event pairs, 68 based on Foata normal form. 3/957 useless extension candidates. Maximal degree in co-relation 6510. Up to 541 conditions per place. [2024-06-27 20:31:18,080 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 97 changer transitions 0/215 dead transitions. [2024-06-27 20:31:18,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 215 transitions, 3092 flow [2024-06-27 20:31:18,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:18,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:31:18,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-27 20:31:18,081 INFO L175 Difference]: Start difference. First operand has 231 places, 198 transitions, 2310 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:31:18,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 215 transitions, 3092 flow [2024-06-27 20:31:18,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 215 transitions, 2875 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 20:31:18,269 INFO L231 Difference]: Finished difference. Result has 234 places, 198 transitions, 2296 flow [2024-06-27 20:31:18,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2296, PETRI_PLACES=234, PETRI_TRANSITIONS=198} [2024-06-27 20:31:18,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-27 20:31:18,270 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 198 transitions, 2296 flow [2024-06-27 20:31:18,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:18,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:18,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:18,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:31:18,270 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:18,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1862469272, now seen corresponding path program 14 times [2024-06-27 20:31:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:18,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025089241] [2024-06-27 20:31:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025089241] [2024-06-27 20:31:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025089241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:18,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:18,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:18,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35687993] [2024-06-27 20:31:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:18,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:18,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:18,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:18,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 198 transitions, 2296 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:18,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:18,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:18,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:19,131 INFO L124 PetriNetUnfolderBase]: 531/937 cut-off events. [2024-06-27 20:31:19,131 INFO L125 PetriNetUnfolderBase]: For 73014/73014 co-relation queries the response was YES. [2024-06-27 20:31:19,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6222 conditions, 937 events. 531/937 cut-off events. For 73014/73014 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4426 event pairs, 93 based on Foata normal form. 4/941 useless extension candidates. Maximal degree in co-relation 6111. Up to 880 conditions per place. [2024-06-27 20:31:19,139 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 184 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-06-27 20:31:19,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 209 transitions, 2738 flow [2024-06-27 20:31:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:31:19,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 20:31:19,140 INFO L175 Difference]: Start difference. First operand has 234 places, 198 transitions, 2296 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:31:19,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 209 transitions, 2738 flow [2024-06-27 20:31:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 209 transitions, 2394 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-27 20:31:19,292 INFO L231 Difference]: Finished difference. Result has 232 places, 198 transitions, 2007 flow [2024-06-27 20:31:19,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2024-06-27 20:31:19,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 20:31:19,292 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 2007 flow [2024-06-27 20:31:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:19,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:19,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:19,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:31:19,293 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:19,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1173405612, now seen corresponding path program 15 times [2024-06-27 20:31:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359402261] [2024-06-27 20:31:19,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:19,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:19,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359402261] [2024-06-27 20:31:19,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359402261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:19,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353051507] [2024-06-27 20:31:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:19,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:19,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:19,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:19,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:19,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:19,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:20,003 INFO L124 PetriNetUnfolderBase]: 525/928 cut-off events. [2024-06-27 20:31:20,003 INFO L125 PetriNetUnfolderBase]: For 60833/60837 co-relation queries the response was YES. [2024-06-27 20:31:20,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 928 events. 525/928 cut-off events. For 60833/60837 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4367 event pairs, 86 based on Foata normal form. 2/930 useless extension candidates. Maximal degree in co-relation 5602. Up to 404 conditions per place. [2024-06-27 20:31:20,011 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 93 changer transitions 0/214 dead transitions. [2024-06-27 20:31:20,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 214 transitions, 2635 flow [2024-06-27 20:31:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:31:20,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-27 20:31:20,013 INFO L175 Difference]: Start difference. First operand has 232 places, 198 transitions, 2007 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:31:20,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 214 transitions, 2635 flow [2024-06-27 20:31:20,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 214 transitions, 2546 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:20,178 INFO L231 Difference]: Finished difference. Result has 232 places, 198 transitions, 2109 flow [2024-06-27 20:31:20,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1918, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2109, PETRI_PLACES=232, PETRI_TRANSITIONS=198} [2024-06-27 20:31:20,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-27 20:31:20,179 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 198 transitions, 2109 flow [2024-06-27 20:31:20,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:20,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:20,179 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 20:31:20,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:31:20,180 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:20,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1254784367, now seen corresponding path program 1 times [2024-06-27 20:31:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433704139] [2024-06-27 20:31:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:20,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433704139] [2024-06-27 20:31:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433704139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116396435] [2024-06-27 20:31:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:20,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:20,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:20,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 198 transitions, 2109 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:20,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:20,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:20,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:21,124 INFO L124 PetriNetUnfolderBase]: 529/935 cut-off events. [2024-06-27 20:31:21,124 INFO L125 PetriNetUnfolderBase]: For 62504/62504 co-relation queries the response was YES. [2024-06-27 20:31:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 935 events. 529/935 cut-off events. For 62504/62504 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4446 event pairs, 68 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 5791. Up to 830 conditions per place. [2024-06-27 20:31:21,135 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 193 selfloop transitions, 22 changer transitions 0/217 dead transitions. [2024-06-27 20:31:21,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 217 transitions, 2598 flow [2024-06-27 20:31:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:21,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:21,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-27 20:31:21,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-27 20:31:21,137 INFO L175 Difference]: Start difference. First operand has 232 places, 198 transitions, 2109 flow. Second operand 10 states and 101 transitions. [2024-06-27 20:31:21,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 217 transitions, 2598 flow [2024-06-27 20:31:21,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 217 transitions, 2335 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:31:21,294 INFO L231 Difference]: Finished difference. Result has 231 places, 199 transitions, 1906 flow [2024-06-27 20:31:21,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=231, PETRI_TRANSITIONS=199} [2024-06-27 20:31:21,295 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 20:31:21,295 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 199 transitions, 1906 flow [2024-06-27 20:31:21,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:21,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:21,296 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 20:31:21,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:31:21,296 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:21,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 304292437, now seen corresponding path program 2 times [2024-06-27 20:31:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705402718] [2024-06-27 20:31:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:21,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705402718] [2024-06-27 20:31:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705402718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:21,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463386399] [2024-06-27 20:31:21,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:22,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:22,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 199 transitions, 1906 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:22,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:22,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:22,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:22,406 INFO L124 PetriNetUnfolderBase]: 540/956 cut-off events. [2024-06-27 20:31:22,406 INFO L125 PetriNetUnfolderBase]: For 69937/69937 co-relation queries the response was YES. [2024-06-27 20:31:22,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 956 events. 540/956 cut-off events. For 69937/69937 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4594 event pairs, 81 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 5830. Up to 798 conditions per place. [2024-06-27 20:31:22,414 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 32 changer transitions 0/220 dead transitions. [2024-06-27 20:31:22,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 220 transitions, 2581 flow [2024-06-27 20:31:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:31:22,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:31:22,415 INFO L175 Difference]: Start difference. First operand has 231 places, 199 transitions, 1906 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:31:22,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 220 transitions, 2581 flow [2024-06-27 20:31:22,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 220 transitions, 2531 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:22,586 INFO L231 Difference]: Finished difference. Result has 233 places, 201 transitions, 1950 flow [2024-06-27 20:31:22,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1950, PETRI_PLACES=233, PETRI_TRANSITIONS=201} [2024-06-27 20:31:22,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-27 20:31:22,586 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 201 transitions, 1950 flow [2024-06-27 20:31:22,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:22,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:22,587 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 20:31:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:31:22,587 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:22,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash 645835037, now seen corresponding path program 3 times [2024-06-27 20:31:22,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:22,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660005123] [2024-06-27 20:31:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:22,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660005123] [2024-06-27 20:31:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660005123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:23,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:23,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353380885] [2024-06-27 20:31:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:23,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:23,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 201 transitions, 1950 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:23,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:23,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:23,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:23,710 INFO L124 PetriNetUnfolderBase]: 544/964 cut-off events. [2024-06-27 20:31:23,710 INFO L125 PetriNetUnfolderBase]: For 72069/72069 co-relation queries the response was YES. [2024-06-27 20:31:23,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6026 conditions, 964 events. 544/964 cut-off events. For 72069/72069 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4654 event pairs, 83 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 5911. Up to 849 conditions per place. [2024-06-27 20:31:23,719 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 35 changer transitions 0/220 dead transitions. [2024-06-27 20:31:23,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 220 transitions, 2455 flow [2024-06-27 20:31:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 20:31:23,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-27 20:31:23,720 INFO L175 Difference]: Start difference. First operand has 233 places, 201 transitions, 1950 flow. Second operand 10 states and 105 transitions. [2024-06-27 20:31:23,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 220 transitions, 2455 flow [2024-06-27 20:31:23,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 220 transitions, 2397 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:23,915 INFO L231 Difference]: Finished difference. Result has 237 places, 202 transitions, 1983 flow [2024-06-27 20:31:23,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1983, PETRI_PLACES=237, PETRI_TRANSITIONS=202} [2024-06-27 20:31:23,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 20:31:23,916 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 202 transitions, 1983 flow [2024-06-27 20:31:23,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:23,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:23,916 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 20:31:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:31:23,916 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:23,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:23,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1072513319, now seen corresponding path program 4 times [2024-06-27 20:31:23,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:23,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121931733] [2024-06-27 20:31:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:23,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:24,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121931733] [2024-06-27 20:31:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121931733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:24,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:24,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:24,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558959084] [2024-06-27 20:31:24,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:24,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:24,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:24,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:24,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 202 transitions, 1983 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:24,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:24,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:24,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:24,928 INFO L124 PetriNetUnfolderBase]: 541/959 cut-off events. [2024-06-27 20:31:24,928 INFO L125 PetriNetUnfolderBase]: For 66885/66885 co-relation queries the response was YES. [2024-06-27 20:31:24,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5888 conditions, 959 events. 541/959 cut-off events. For 66885/66885 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4630 event pairs, 80 based on Foata normal form. 2/961 useless extension candidates. Maximal degree in co-relation 5771. Up to 828 conditions per place. [2024-06-27 20:31:24,937 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 35 changer transitions 0/220 dead transitions. [2024-06-27 20:31:24,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 220 transitions, 2472 flow [2024-06-27 20:31:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:24,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:31:24,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:31:24,938 INFO L175 Difference]: Start difference. First operand has 237 places, 202 transitions, 1983 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:31:24,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 220 transitions, 2472 flow [2024-06-27 20:31:25,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 220 transitions, 2393 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:25,108 INFO L231 Difference]: Finished difference. Result has 239 places, 202 transitions, 1978 flow [2024-06-27 20:31:25,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1978, PETRI_PLACES=239, PETRI_TRANSITIONS=202} [2024-06-27 20:31:25,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-27 20:31:25,109 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 202 transitions, 1978 flow [2024-06-27 20:31:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:25,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:25,109 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 20:31:25,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:31:25,110 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:25,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:25,110 INFO L85 PathProgramCache]: Analyzing trace with hash 645835223, now seen corresponding path program 1 times [2024-06-27 20:31:25,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:25,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133435820] [2024-06-27 20:31:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:25,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:25,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:25,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133435820] [2024-06-27 20:31:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133435820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:25,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:25,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89990314] [2024-06-27 20:31:25,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:25,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:25,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:25,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:25,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 202 transitions, 1978 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:25,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:25,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:25,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:26,224 INFO L124 PetriNetUnfolderBase]: 538/954 cut-off events. [2024-06-27 20:31:26,225 INFO L125 PetriNetUnfolderBase]: For 61426/61426 co-relation queries the response was YES. [2024-06-27 20:31:26,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 954 events. 538/954 cut-off events. For 61426/61426 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4591 event pairs, 81 based on Foata normal form. 1/955 useless extension candidates. Maximal degree in co-relation 5655. Up to 836 conditions per place. [2024-06-27 20:31:26,233 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 180 selfloop transitions, 38 changer transitions 0/220 dead transitions. [2024-06-27 20:31:26,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 220 transitions, 2471 flow [2024-06-27 20:31:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 20:31:26,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-27 20:31:26,235 INFO L175 Difference]: Start difference. First operand has 239 places, 202 transitions, 1978 flow. Second operand 10 states and 106 transitions. [2024-06-27 20:31:26,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 220 transitions, 2471 flow [2024-06-27 20:31:26,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 220 transitions, 2378 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:26,432 INFO L231 Difference]: Finished difference. Result has 240 places, 202 transitions, 1969 flow [2024-06-27 20:31:26,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1969, PETRI_PLACES=240, PETRI_TRANSITIONS=202} [2024-06-27 20:31:26,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 20:31:26,433 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 202 transitions, 1969 flow [2024-06-27 20:31:26,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:26,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:26,433 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 20:31:26,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:31:26,434 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:26,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:26,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2121991841, now seen corresponding path program 5 times [2024-06-27 20:31:26,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:26,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324661597] [2024-06-27 20:31:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324661597] [2024-06-27 20:31:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324661597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073348154] [2024-06-27 20:31:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:27,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:27,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 202 transitions, 1969 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:27,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:27,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:27,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:27,509 INFO L124 PetriNetUnfolderBase]: 542/962 cut-off events. [2024-06-27 20:31:27,510 INFO L125 PetriNetUnfolderBase]: For 66547/66547 co-relation queries the response was YES. [2024-06-27 20:31:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 962 events. 542/962 cut-off events. For 66547/66547 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4628 event pairs, 81 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 5697. Up to 796 conditions per place. [2024-06-27 20:31:27,519 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-27 20:31:27,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 219 transitions, 2461 flow [2024-06-27 20:31:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:27,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:27,520 INFO L175 Difference]: Start difference. First operand has 240 places, 202 transitions, 1969 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:27,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 219 transitions, 2461 flow [2024-06-27 20:31:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 219 transitions, 2294 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:31:27,716 INFO L231 Difference]: Finished difference. Result has 238 places, 203 transitions, 1906 flow [2024-06-27 20:31:27,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=238, PETRI_TRANSITIONS=203} [2024-06-27 20:31:27,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-27 20:31:27,717 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 203 transitions, 1906 flow [2024-06-27 20:31:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:27,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:27,717 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 20:31:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:31:27,718 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:27,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash -150832949, now seen corresponding path program 6 times [2024-06-27 20:31:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508550901] [2024-06-27 20:31:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508550901] [2024-06-27 20:31:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508550901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:28,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:28,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896500208] [2024-06-27 20:31:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:28,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:28,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 203 transitions, 1906 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:28,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:28,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:28,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:28,774 INFO L124 PetriNetUnfolderBase]: 546/970 cut-off events. [2024-06-27 20:31:28,775 INFO L125 PetriNetUnfolderBase]: For 67896/67896 co-relation queries the response was YES. [2024-06-27 20:31:28,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5783 conditions, 970 events. 546/970 cut-off events. For 67896/67896 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4690 event pairs, 81 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 5663. Up to 790 conditions per place. [2024-06-27 20:31:28,783 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 43 changer transitions 0/220 dead transitions. [2024-06-27 20:31:28,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 220 transitions, 2400 flow [2024-06-27 20:31:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:28,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:28,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:28,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:28,784 INFO L175 Difference]: Start difference. First operand has 238 places, 203 transitions, 1906 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:28,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 220 transitions, 2400 flow [2024-06-27 20:31:28,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 220 transitions, 2306 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:28,979 INFO L231 Difference]: Finished difference. Result has 240 places, 204 transitions, 1920 flow [2024-06-27 20:31:28,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=240, PETRI_TRANSITIONS=204} [2024-06-27 20:31:28,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-27 20:31:28,979 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 204 transitions, 1920 flow [2024-06-27 20:31:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:28,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:28,980 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 20:31:28,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:31:28,980 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:28,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -150948269, now seen corresponding path program 7 times [2024-06-27 20:31:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:28,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557923221] [2024-06-27 20:31:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:28,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:29,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557923221] [2024-06-27 20:31:29,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557923221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:29,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952054610] [2024-06-27 20:31:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:29,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:29,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:29,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:29,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 204 transitions, 1920 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:29,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:29,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:29,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:30,167 INFO L124 PetriNetUnfolderBase]: 557/991 cut-off events. [2024-06-27 20:31:30,167 INFO L125 PetriNetUnfolderBase]: For 77331/77331 co-relation queries the response was YES. [2024-06-27 20:31:30,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6088 conditions, 991 events. 557/991 cut-off events. For 77331/77331 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4845 event pairs, 84 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 5967. Up to 768 conditions per place. [2024-06-27 20:31:30,178 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 45 changer transitions 0/223 dead transitions. [2024-06-27 20:31:30,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 223 transitions, 2614 flow [2024-06-27 20:31:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:30,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:30,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:30,179 INFO L175 Difference]: Start difference. First operand has 240 places, 204 transitions, 1920 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:30,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 223 transitions, 2614 flow [2024-06-27 20:31:30,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 223 transitions, 2516 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:30,429 INFO L231 Difference]: Finished difference. Result has 242 places, 206 transitions, 1954 flow [2024-06-27 20:31:30,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1954, PETRI_PLACES=242, PETRI_TRANSITIONS=206} [2024-06-27 20:31:30,429 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-27 20:31:30,430 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 206 transitions, 1954 flow [2024-06-27 20:31:30,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:30,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:30,430 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 20:31:30,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:31:30,430 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:30,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash 19874131, now seen corresponding path program 8 times [2024-06-27 20:31:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:30,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594825262] [2024-06-27 20:31:30,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:30,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594825262] [2024-06-27 20:31:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594825262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:31,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170462202] [2024-06-27 20:31:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:31,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:31,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:31,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 206 transitions, 1954 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:31,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:31,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:31,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:31,647 INFO L124 PetriNetUnfolderBase]: 561/999 cut-off events. [2024-06-27 20:31:31,648 INFO L125 PetriNetUnfolderBase]: For 79222/79222 co-relation queries the response was YES. [2024-06-27 20:31:31,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6155 conditions, 999 events. 561/999 cut-off events. For 79222/79222 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4920 event pairs, 80 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6033. Up to 833 conditions per place. [2024-06-27 20:31:31,656 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 46 changer transitions 0/223 dead transitions. [2024-06-27 20:31:31,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 223 transitions, 2460 flow [2024-06-27 20:31:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:31,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:31:31,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:31:31,657 INFO L175 Difference]: Start difference. First operand has 242 places, 206 transitions, 1954 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:31:31,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 223 transitions, 2460 flow [2024-06-27 20:31:31,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 223 transitions, 2378 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:31:31,910 INFO L231 Difference]: Finished difference. Result has 246 places, 207 transitions, 1990 flow [2024-06-27 20:31:31,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=246, PETRI_TRANSITIONS=207} [2024-06-27 20:31:31,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-27 20:31:31,911 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 207 transitions, 1990 flow [2024-06-27 20:31:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:31,911 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 20:31:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:31:31,912 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:31,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:31,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2006746325, now seen corresponding path program 9 times [2024-06-27 20:31:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:31,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849139154] [2024-06-27 20:31:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:32,621 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 20:31:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:32,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849139154] [2024-06-27 20:31:32,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849139154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:32,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:32,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:32,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75384470] [2024-06-27 20:31:32,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:32,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:32,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 207 transitions, 1990 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:32,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:32,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:32,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:33,068 INFO L124 PetriNetUnfolderBase]: 565/1007 cut-off events. [2024-06-27 20:31:33,069 INFO L125 PetriNetUnfolderBase]: For 80831/80831 co-relation queries the response was YES. [2024-06-27 20:31:33,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 1007 events. 565/1007 cut-off events. For 80831/80831 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4989 event pairs, 80 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 6124. Up to 818 conditions per place. [2024-06-27 20:31:33,078 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 48 changer transitions 0/225 dead transitions. [2024-06-27 20:31:33,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 225 transitions, 2674 flow [2024-06-27 20:31:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:33,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:33,079 INFO L175 Difference]: Start difference. First operand has 246 places, 207 transitions, 1990 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:33,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 225 transitions, 2674 flow [2024-06-27 20:31:33,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 225 transitions, 2574 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:33,310 INFO L231 Difference]: Finished difference. Result has 248 places, 208 transitions, 2006 flow [2024-06-27 20:31:33,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2006, PETRI_PLACES=248, PETRI_TRANSITIONS=208} [2024-06-27 20:31:33,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-27 20:31:33,310 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 208 transitions, 2006 flow [2024-06-27 20:31:33,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:33,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:33,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:31:33,311 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:33,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2000312585, now seen corresponding path program 10 times [2024-06-27 20:31:33,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:33,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307658271] [2024-06-27 20:31:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:34,025 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 20:31:34,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:34,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307658271] [2024-06-27 20:31:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307658271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:34,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:34,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359600443] [2024-06-27 20:31:34,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:34,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:34,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:34,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:34,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 208 transitions, 2006 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:34,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:34,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:34,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:34,424 INFO L124 PetriNetUnfolderBase]: 562/1002 cut-off events. [2024-06-27 20:31:34,424 INFO L125 PetriNetUnfolderBase]: For 74554/74554 co-relation queries the response was YES. [2024-06-27 20:31:34,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 1002 events. 562/1002 cut-off events. For 74554/74554 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4961 event pairs, 79 based on Foata normal form. 2/1004 useless extension candidates. Maximal degree in co-relation 5932. Up to 836 conditions per place. [2024-06-27 20:31:34,434 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 49 changer transitions 0/224 dead transitions. [2024-06-27 20:31:34,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 224 transitions, 2494 flow [2024-06-27 20:31:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:34,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 20:31:34,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-27 20:31:34,435 INFO L175 Difference]: Start difference. First operand has 248 places, 208 transitions, 2006 flow. Second operand 10 states and 107 transitions. [2024-06-27 20:31:34,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 224 transitions, 2494 flow [2024-06-27 20:31:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 224 transitions, 2372 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:34,644 INFO L231 Difference]: Finished difference. Result has 250 places, 208 transitions, 1986 flow [2024-06-27 20:31:34,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1986, PETRI_PLACES=250, PETRI_TRANSITIONS=208} [2024-06-27 20:31:34,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-27 20:31:34,644 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 208 transitions, 1986 flow [2024-06-27 20:31:34,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:34,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:34,645 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 20:31:34,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:31:34,645 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash 26549485, now seen corresponding path program 1 times [2024-06-27 20:31:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646961062] [2024-06-27 20:31:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:34,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:35,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646961062] [2024-06-27 20:31:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646961062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:35,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843417300] [2024-06-27 20:31:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:35,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:35,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:35,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 208 transitions, 1986 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:35,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:35,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:35,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:35,778 INFO L124 PetriNetUnfolderBase]: 582/1046 cut-off events. [2024-06-27 20:31:35,778 INFO L125 PetriNetUnfolderBase]: For 116485/116485 co-relation queries the response was YES. [2024-06-27 20:31:35,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6214 conditions, 1046 events. 582/1046 cut-off events. For 116485/116485 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5240 event pairs, 87 based on Foata normal form. 12/1058 useless extension candidates. Maximal degree in co-relation 6088. Up to 765 conditions per place. [2024-06-27 20:31:35,790 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 57 changer transitions 12/231 dead transitions. [2024-06-27 20:31:35,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 231 transitions, 2550 flow [2024-06-27 20:31:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:35,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:31:35,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:31:35,791 INFO L175 Difference]: Start difference. First operand has 250 places, 208 transitions, 1986 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:31:35,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 231 transitions, 2550 flow [2024-06-27 20:31:35,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 231 transitions, 2446 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:35,987 INFO L231 Difference]: Finished difference. Result has 252 places, 202 transitions, 1957 flow [2024-06-27 20:31:35,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=252, PETRI_TRANSITIONS=202} [2024-06-27 20:31:35,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-27 20:31:35,988 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 202 transitions, 1957 flow [2024-06-27 20:31:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:35,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:35,988 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 20:31:35,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:31:35,989 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:35,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1928185851, now seen corresponding path program 11 times [2024-06-27 20:31:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773447024] [2024-06-27 20:31:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:36,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773447024] [2024-06-27 20:31:36,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773447024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:36,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:36,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496990076] [2024-06-27 20:31:36,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:36,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:36,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:36,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 202 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:36,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:36,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:36,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:37,045 INFO L124 PetriNetUnfolderBase]: 542/987 cut-off events. [2024-06-27 20:31:37,046 INFO L125 PetriNetUnfolderBase]: For 78084/78088 co-relation queries the response was YES. [2024-06-27 20:31:37,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 987 events. 542/987 cut-off events. For 78084/78088 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4982 event pairs, 82 based on Foata normal form. 2/989 useless extension candidates. Maximal degree in co-relation 5869. Up to 725 conditions per place. [2024-06-27 20:31:37,057 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 65 changer transitions 0/218 dead transitions. [2024-06-27 20:31:37,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 218 transitions, 2451 flow [2024-06-27 20:31:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:37,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 20:31:37,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-27 20:31:37,058 INFO L175 Difference]: Start difference. First operand has 252 places, 202 transitions, 1957 flow. Second operand 10 states and 112 transitions. [2024-06-27 20:31:37,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 218 transitions, 2451 flow [2024-06-27 20:31:37,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 218 transitions, 2315 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:37,291 INFO L231 Difference]: Finished difference. Result has 253 places, 203 transitions, 1977 flow [2024-06-27 20:31:37,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1977, PETRI_PLACES=253, PETRI_TRANSITIONS=203} [2024-06-27 20:31:37,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-27 20:31:37,291 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 203 transitions, 1977 flow [2024-06-27 20:31:37,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:37,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:37,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:37,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:31:37,292 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:37,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:37,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1927939587, now seen corresponding path program 2 times [2024-06-27 20:31:37,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:37,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225965381] [2024-06-27 20:31:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:37,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:38,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225965381] [2024-06-27 20:31:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225965381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:38,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882853511] [2024-06-27 20:31:38,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:38,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:38,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:38,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:38,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:38,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 203 transitions, 1977 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:38,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:38,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:38,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:38,568 INFO L124 PetriNetUnfolderBase]: 562/1031 cut-off events. [2024-06-27 20:31:38,569 INFO L125 PetriNetUnfolderBase]: For 122405/122409 co-relation queries the response was YES. [2024-06-27 20:31:38,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 1031 events. 562/1031 cut-off events. For 122405/122409 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5256 event pairs, 96 based on Foata normal form. 12/1043 useless extension candidates. Maximal degree in co-relation 6052. Up to 573 conditions per place. [2024-06-27 20:31:38,578 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 130 selfloop transitions, 83 changer transitions 10/225 dead transitions. [2024-06-27 20:31:38,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 225 transitions, 2529 flow [2024-06-27 20:31:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:31:38,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:31:38,579 INFO L175 Difference]: Start difference. First operand has 253 places, 203 transitions, 1977 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:31:38,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 225 transitions, 2529 flow [2024-06-27 20:31:38,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 225 transitions, 2383 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:38,796 INFO L231 Difference]: Finished difference. Result has 256 places, 199 transitions, 1991 flow [2024-06-27 20:31:38,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1991, PETRI_PLACES=256, PETRI_TRANSITIONS=199} [2024-06-27 20:31:38,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-27 20:31:38,796 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 199 transitions, 1991 flow [2024-06-27 20:31:38,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:38,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:38,797 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 20:31:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:31:38,797 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2016013997, now seen corresponding path program 12 times [2024-06-27 20:31:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402251867] [2024-06-27 20:31:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:38,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:39,409 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 20:31:39,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:39,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402251867] [2024-06-27 20:31:39,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402251867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:39,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:39,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:39,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483245916] [2024-06-27 20:31:39,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:39,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:39,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:39,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:39,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 199 transitions, 1991 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:39,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:39,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:39,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:39,686 INFO L124 PetriNetUnfolderBase]: 528/977 cut-off events. [2024-06-27 20:31:39,686 INFO L125 PetriNetUnfolderBase]: For 81605/81609 co-relation queries the response was YES. [2024-06-27 20:31:39,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 977 events. 528/977 cut-off events. For 81605/81609 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5024 event pairs, 82 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5892. Up to 715 conditions per place. [2024-06-27 20:31:39,695 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 64 changer transitions 0/215 dead transitions. [2024-06-27 20:31:39,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 215 transitions, 2481 flow [2024-06-27 20:31:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:31:39,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:31:39,696 INFO L175 Difference]: Start difference. First operand has 256 places, 199 transitions, 1991 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:31:39,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 215 transitions, 2481 flow [2024-06-27 20:31:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 215 transitions, 2291 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:39,942 INFO L231 Difference]: Finished difference. Result has 257 places, 200 transitions, 1957 flow [2024-06-27 20:31:39,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1957, PETRI_PLACES=257, PETRI_TRANSITIONS=200} [2024-06-27 20:31:39,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-27 20:31:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 200 transitions, 1957 flow [2024-06-27 20:31:39,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:39,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:39,943 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 20:31:39,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:31:39,943 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:39,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2016018647, now seen corresponding path program 13 times [2024-06-27 20:31:39,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:39,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945730729] [2024-06-27 20:31:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945730729] [2024-06-27 20:31:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945730729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:40,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:40,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067782979] [2024-06-27 20:31:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:40,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:40,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:40,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:40,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:40,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:40,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 200 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:40,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:40,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:40,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:41,088 INFO L124 PetriNetUnfolderBase]: 532/985 cut-off events. [2024-06-27 20:31:41,088 INFO L125 PetriNetUnfolderBase]: For 83207/83211 co-relation queries the response was YES. [2024-06-27 20:31:41,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6020 conditions, 985 events. 532/985 cut-off events. For 83207/83211 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5091 event pairs, 82 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 5890. Up to 703 conditions per place. [2024-06-27 20:31:41,098 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 66 changer transitions 0/216 dead transitions. [2024-06-27 20:31:41,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 216 transitions, 2449 flow [2024-06-27 20:31:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:31:41,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-27 20:31:41,099 INFO L175 Difference]: Start difference. First operand has 257 places, 200 transitions, 1957 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:31:41,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 216 transitions, 2449 flow [2024-06-27 20:31:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 216 transitions, 2303 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:41,393 INFO L231 Difference]: Finished difference. Result has 259 places, 201 transitions, 1973 flow [2024-06-27 20:31:41,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1973, PETRI_PLACES=259, PETRI_TRANSITIONS=201} [2024-06-27 20:31:41,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-27 20:31:41,394 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 201 transitions, 1973 flow [2024-06-27 20:31:41,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:41,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:41,394 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 20:31:41,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:31:41,395 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:41,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2108250869, now seen corresponding path program 14 times [2024-06-27 20:31:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198847306] [2024-06-27 20:31:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198847306] [2024-06-27 20:31:42,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198847306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651990188] [2024-06-27 20:31:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:42,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:42,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 201 transitions, 1973 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:42,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:42,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:42,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:42,547 INFO L124 PetriNetUnfolderBase]: 536/993 cut-off events. [2024-06-27 20:31:42,547 INFO L125 PetriNetUnfolderBase]: For 85031/85035 co-relation queries the response was YES. [2024-06-27 20:31:42,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6081 conditions, 993 events. 536/993 cut-off events. For 85031/85035 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5146 event pairs, 86 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 5950. Up to 731 conditions per place. [2024-06-27 20:31:42,556 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 147 selfloop transitions, 67 changer transitions 0/216 dead transitions. [2024-06-27 20:31:42,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 216 transitions, 2465 flow [2024-06-27 20:31:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:42,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:31:42,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:31:42,557 INFO L175 Difference]: Start difference. First operand has 259 places, 201 transitions, 1973 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:31:42,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 216 transitions, 2465 flow [2024-06-27 20:31:42,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 216 transitions, 2313 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:42,830 INFO L231 Difference]: Finished difference. Result has 261 places, 202 transitions, 1987 flow [2024-06-27 20:31:42,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1987, PETRI_PLACES=261, PETRI_TRANSITIONS=202} [2024-06-27 20:31:42,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-27 20:31:42,831 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 202 transitions, 1987 flow [2024-06-27 20:31:42,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:42,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:42,831 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 20:31:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:31:42,832 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:42,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2108246219, now seen corresponding path program 15 times [2024-06-27 20:31:42,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:42,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219455118] [2024-06-27 20:31:42,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:42,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:43,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219455118] [2024-06-27 20:31:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219455118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:43,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:43,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831102455] [2024-06-27 20:31:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:43,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:43,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:43,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:43,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:43,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:43,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 202 transitions, 1987 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:43,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:43,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:43,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:44,134 INFO L124 PetriNetUnfolderBase]: 540/1000 cut-off events. [2024-06-27 20:31:44,135 INFO L125 PetriNetUnfolderBase]: For 86716/86716 co-relation queries the response was YES. [2024-06-27 20:31:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6133 conditions, 1000 events. 540/1000 cut-off events. For 86716/86716 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5205 event pairs, 83 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 6001. Up to 725 conditions per place. [2024-06-27 20:31:44,145 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 70 changer transitions 0/220 dead transitions. [2024-06-27 20:31:44,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 220 transitions, 2514 flow [2024-06-27 20:31:44,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:44,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:31:44,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:31:44,146 INFO L175 Difference]: Start difference. First operand has 261 places, 202 transitions, 1987 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:31:44,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 220 transitions, 2514 flow [2024-06-27 20:31:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 220 transitions, 2358 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:44,435 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 2005 flow [2024-06-27 20:31:44,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2005, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2024-06-27 20:31:44,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-27 20:31:44,436 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 2005 flow [2024-06-27 20:31:44,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:44,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:44,436 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 20:31:44,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:31:44,437 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:44,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2105437341, now seen corresponding path program 16 times [2024-06-27 20:31:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:44,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180151922] [2024-06-27 20:31:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:44,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180151922] [2024-06-27 20:31:45,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180151922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452387192] [2024-06-27 20:31:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:45,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:45,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:45,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:45,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:45,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:45,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:45,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:45,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:45,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:45,496 INFO L124 PetriNetUnfolderBase]: 544/1009 cut-off events. [2024-06-27 20:31:45,496 INFO L125 PetriNetUnfolderBase]: For 88811/88815 co-relation queries the response was YES. [2024-06-27 20:31:45,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6195 conditions, 1009 events. 544/1009 cut-off events. For 88811/88815 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5281 event pairs, 88 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 6062. Up to 662 conditions per place. [2024-06-27 20:31:45,506 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 73 changer transitions 0/219 dead transitions. [2024-06-27 20:31:45,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 219 transitions, 2701 flow [2024-06-27 20:31:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:45,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:31:45,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:31:45,507 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 2005 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:31:45,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 219 transitions, 2701 flow [2024-06-27 20:31:45,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 219 transitions, 2537 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:45,843 INFO L231 Difference]: Finished difference. Result has 265 places, 204 transitions, 2021 flow [2024-06-27 20:31:45,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2021, PETRI_PLACES=265, PETRI_TRANSITIONS=204} [2024-06-27 20:31:45,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-27 20:31:45,843 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 204 transitions, 2021 flow [2024-06-27 20:31:45,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:45,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:45,844 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 20:31:45,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:31:45,844 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:45,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:45,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1698035717, now seen corresponding path program 17 times [2024-06-27 20:31:45,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:45,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808960225] [2024-06-27 20:31:45,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:45,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:46,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808960225] [2024-06-27 20:31:46,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808960225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:46,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:46,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:46,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243633502] [2024-06-27 20:31:46,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:46,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:46,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:46,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:46,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:46,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:46,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 204 transitions, 2021 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:46,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:46,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:46,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:46,834 INFO L124 PetriNetUnfolderBase]: 548/1017 cut-off events. [2024-06-27 20:31:46,834 INFO L125 PetriNetUnfolderBase]: For 90802/90806 co-relation queries the response was YES. [2024-06-27 20:31:46,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6262 conditions, 1017 events. 548/1017 cut-off events. For 90802/90806 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5334 event pairs, 78 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6128. Up to 755 conditions per place. [2024-06-27 20:31:46,843 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 78 changer transitions 0/219 dead transitions. [2024-06-27 20:31:46,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 219 transitions, 2525 flow [2024-06-27 20:31:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 20:31:46,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-27 20:31:46,868 INFO L175 Difference]: Start difference. First operand has 265 places, 204 transitions, 2021 flow. Second operand 10 states and 108 transitions. [2024-06-27 20:31:46,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 219 transitions, 2525 flow [2024-06-27 20:31:47,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 219 transitions, 2314 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:47,177 INFO L231 Difference]: Finished difference. Result has 266 places, 205 transitions, 2004 flow [2024-06-27 20:31:47,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2004, PETRI_PLACES=266, PETRI_TRANSITIONS=205} [2024-06-27 20:31:47,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-27 20:31:47,178 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 205 transitions, 2004 flow [2024-06-27 20:31:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:47,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:47,178 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 20:31:47,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:31:47,179 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:47,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1993857371, now seen corresponding path program 3 times [2024-06-27 20:31:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:47,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576013266] [2024-06-27 20:31:47,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:47,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:47,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:47,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576013266] [2024-06-27 20:31:47,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576013266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:47,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:47,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:47,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846711091] [2024-06-27 20:31:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:47,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:47,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:48,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:48,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 205 transitions, 2004 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:48,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:48,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:48,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:48,370 INFO L124 PetriNetUnfolderBase]: 588/1096 cut-off events. [2024-06-27 20:31:48,371 INFO L125 PetriNetUnfolderBase]: For 151747/151747 co-relation queries the response was YES. [2024-06-27 20:31:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7680 conditions, 1096 events. 588/1096 cut-off events. For 151747/151747 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5762 event pairs, 122 based on Foata normal form. 2/1098 useless extension candidates. Maximal degree in co-relation 7547. Up to 957 conditions per place. [2024-06-27 20:31:48,382 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 24 changer transitions 0/227 dead transitions. [2024-06-27 20:31:48,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 227 transitions, 2782 flow [2024-06-27 20:31:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:31:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:31:48,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 20:31:48,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 20:31:48,384 INFO L175 Difference]: Start difference. First operand has 266 places, 205 transitions, 2004 flow. Second operand 12 states and 121 transitions. [2024-06-27 20:31:48,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 227 transitions, 2782 flow [2024-06-27 20:31:48,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 227 transitions, 2536 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:48,807 INFO L231 Difference]: Finished difference. Result has 268 places, 207 transitions, 1874 flow [2024-06-27 20:31:48,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1874, PETRI_PLACES=268, PETRI_TRANSITIONS=207} [2024-06-27 20:31:48,808 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-27 20:31:48,808 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 207 transitions, 1874 flow [2024-06-27 20:31:48,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:48,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:48,808 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 20:31:48,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:31:48,808 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:48,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash -211031437, now seen corresponding path program 18 times [2024-06-27 20:31:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644727271] [2024-06-27 20:31:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:49,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:49,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644727271] [2024-06-27 20:31:49,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644727271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:49,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:49,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:49,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890223040] [2024-06-27 20:31:49,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:49,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:49,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:49,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 207 transitions, 1874 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:49,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:49,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:49,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:49,855 INFO L124 PetriNetUnfolderBase]: 592/1105 cut-off events. [2024-06-27 20:31:49,855 INFO L125 PetriNetUnfolderBase]: For 154423/154427 co-relation queries the response was YES. [2024-06-27 20:31:49,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7429 conditions, 1105 events. 592/1105 cut-off events. For 154423/154427 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5830 event pairs, 100 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 7297. Up to 843 conditions per place. [2024-06-27 20:31:49,866 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 70 changer transitions 0/223 dead transitions. [2024-06-27 20:31:49,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 223 transitions, 2383 flow [2024-06-27 20:31:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:49,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 20:31:49,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-27 20:31:49,867 INFO L175 Difference]: Start difference. First operand has 268 places, 207 transitions, 1874 flow. Second operand 10 states and 111 transitions. [2024-06-27 20:31:49,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 223 transitions, 2383 flow [2024-06-27 20:31:50,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 223 transitions, 2317 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:50,313 INFO L231 Difference]: Finished difference. Result has 270 places, 208 transitions, 1979 flow [2024-06-27 20:31:50,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1979, PETRI_PLACES=270, PETRI_TRANSITIONS=208} [2024-06-27 20:31:50,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-27 20:31:50,313 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 208 transitions, 1979 flow [2024-06-27 20:31:50,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:50,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:50,314 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 20:31:50,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:31:50,314 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:50,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:50,314 INFO L85 PathProgramCache]: Analyzing trace with hash 548199361, now seen corresponding path program 4 times [2024-06-27 20:31:50,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:50,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072931066] [2024-06-27 20:31:50,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:50,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:50,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:50,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072931066] [2024-06-27 20:31:50,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072931066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:50,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219401501] [2024-06-27 20:31:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:51,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:51,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 208 transitions, 1979 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:51,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:51,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:51,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:51,426 INFO L124 PetriNetUnfolderBase]: 612/1149 cut-off events. [2024-06-27 20:31:51,427 INFO L125 PetriNetUnfolderBase]: For 208867/208871 co-relation queries the response was YES. [2024-06-27 20:31:51,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7724 conditions, 1149 events. 612/1149 cut-off events. For 208867/208871 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6125 event pairs, 98 based on Foata normal form. 12/1161 useless extension candidates. Maximal degree in co-relation 7590. Up to 699 conditions per place. [2024-06-27 20:31:51,438 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 92 changer transitions 8/230 dead transitions. [2024-06-27 20:31:51,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 230 transitions, 2541 flow [2024-06-27 20:31:51,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:31:51,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:31:51,440 INFO L175 Difference]: Start difference. First operand has 270 places, 208 transitions, 1979 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:31:51,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 230 transitions, 2541 flow [2024-06-27 20:31:51,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 230 transitions, 2381 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:51,887 INFO L231 Difference]: Finished difference. Result has 273 places, 206 transitions, 2013 flow [2024-06-27 20:31:51,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2013, PETRI_PLACES=273, PETRI_TRANSITIONS=206} [2024-06-27 20:31:51,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-27 20:31:51,887 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 206 transitions, 2013 flow [2024-06-27 20:31:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:51,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:51,888 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 20:31:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:31:51,888 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:51,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:51,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 5 times [2024-06-27 20:31:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:51,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075541954] [2024-06-27 20:31:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:51,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075541954] [2024-06-27 20:31:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075541954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:52,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:52,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816272728] [2024-06-27 20:31:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:52,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:52,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 206 transitions, 2013 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:52,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:52,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:52,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:53,036 INFO L124 PetriNetUnfolderBase]: 586/1102 cut-off events. [2024-06-27 20:31:53,036 INFO L125 PetriNetUnfolderBase]: For 160691/160691 co-relation queries the response was YES. [2024-06-27 20:31:53,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7616 conditions, 1102 events. 586/1102 cut-off events. For 160691/160691 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5897 event pairs, 126 based on Foata normal form. 2/1104 useless extension candidates. Maximal degree in co-relation 7481. Up to 1047 conditions per place. [2024-06-27 20:31:53,047 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2024-06-27 20:31:53,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 221 transitions, 2505 flow [2024-06-27 20:31:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:31:53,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:31:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-27 20:31:53,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-27 20:31:53,048 INFO L175 Difference]: Start difference. First operand has 273 places, 206 transitions, 2013 flow. Second operand 12 states and 116 transitions. [2024-06-27 20:31:53,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 221 transitions, 2505 flow [2024-06-27 20:31:53,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 221 transitions, 2295 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 20:31:53,438 INFO L231 Difference]: Finished difference. Result has 276 places, 207 transitions, 1875 flow [2024-06-27 20:31:53,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1875, PETRI_PLACES=276, PETRI_TRANSITIONS=207} [2024-06-27 20:31:53,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-27 20:31:53,444 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 207 transitions, 1875 flow [2024-06-27 20:31:53,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:53,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:53,445 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 20:31:53,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:31:53,445 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:53,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1964941887, now seen corresponding path program 19 times [2024-06-27 20:31:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901611857] [2024-06-27 20:31:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:54,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:54,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901611857] [2024-06-27 20:31:54,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901611857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:54,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:54,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:31:54,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54392703] [2024-06-27 20:31:54,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:54,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:31:54,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:31:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:31:54,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:54,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 207 transitions, 1875 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:54,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:54,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:54,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:54,450 INFO L124 PetriNetUnfolderBase]: 590/1111 cut-off events. [2024-06-27 20:31:54,450 INFO L125 PetriNetUnfolderBase]: For 163256/163260 co-relation queries the response was YES. [2024-06-27 20:31:54,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7504 conditions, 1111 events. 590/1111 cut-off events. For 163256/163260 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5942 event pairs, 102 based on Foata normal form. 2/1113 useless extension candidates. Maximal degree in co-relation 7368. Up to 849 conditions per place. [2024-06-27 20:31:54,464 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 71 changer transitions 0/222 dead transitions. [2024-06-27 20:31:54,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 222 transitions, 2380 flow [2024-06-27 20:31:54,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:54,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:54,465 INFO L175 Difference]: Start difference. First operand has 276 places, 207 transitions, 1875 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:54,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 222 transitions, 2380 flow [2024-06-27 20:31:54,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 222 transitions, 2320 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:54,950 INFO L231 Difference]: Finished difference. Result has 276 places, 208 transitions, 1990 flow [2024-06-27 20:31:54,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1990, PETRI_PLACES=276, PETRI_TRANSITIONS=208} [2024-06-27 20:31:54,951 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-27 20:31:54,951 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 208 transitions, 1990 flow [2024-06-27 20:31:54,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:31:54,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:54,951 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 20:31:54,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:31:54,951 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:54,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:54,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1983381851, now seen corresponding path program 6 times [2024-06-27 20:31:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148984832] [2024-06-27 20:31:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:54,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:55,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:55,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148984832] [2024-06-27 20:31:55,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148984832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:55,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:55,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:55,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949345619] [2024-06-27 20:31:55,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:55,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:55,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:55,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:55,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 208 transitions, 1990 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:55,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:55,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:55,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:56,304 INFO L124 PetriNetUnfolderBase]: 574/1082 cut-off events. [2024-06-27 20:31:56,305 INFO L125 PetriNetUnfolderBase]: For 155528/155528 co-relation queries the response was YES. [2024-06-27 20:31:56,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6276 conditions, 1082 events. 574/1082 cut-off events. For 155528/155528 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5814 event pairs, 114 based on Foata normal form. 12/1094 useless extension candidates. Maximal degree in co-relation 6139. Up to 991 conditions per place. [2024-06-27 20:31:56,313 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 17 changer transitions 7/225 dead transitions. [2024-06-27 20:31:56,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 225 transitions, 2496 flow [2024-06-27 20:31:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:56,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:31:56,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-27 20:31:56,314 INFO L175 Difference]: Start difference. First operand has 276 places, 208 transitions, 1990 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:31:56,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 225 transitions, 2496 flow [2024-06-27 20:31:56,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 225 transitions, 2316 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 20:31:56,586 INFO L231 Difference]: Finished difference. Result has 279 places, 206 transitions, 1831 flow [2024-06-27 20:31:56,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1831, PETRI_PLACES=279, PETRI_TRANSITIONS=206} [2024-06-27 20:31:56,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 20:31:56,587 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 206 transitions, 1831 flow [2024-06-27 20:31:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:56,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:56,587 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 20:31:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:31:56,587 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:56,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:56,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1964946537, now seen corresponding path program 20 times [2024-06-27 20:31:56,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:56,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113906158] [2024-06-27 20:31:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:57,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:57,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113906158] [2024-06-27 20:31:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113906158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:57,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997803054] [2024-06-27 20:31:57,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:57,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:57,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:57,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:57,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:57,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 206 transitions, 1831 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:57,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:57,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:57,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:57,719 INFO L124 PetriNetUnfolderBase]: 545/1028 cut-off events. [2024-06-27 20:31:57,720 INFO L125 PetriNetUnfolderBase]: For 91088/91092 co-relation queries the response was YES. [2024-06-27 20:31:57,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 1028 events. 545/1028 cut-off events. For 91088/91092 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5509 event pairs, 79 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 5514. Up to 740 conditions per place. [2024-06-27 20:31:57,730 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 74 changer transitions 0/220 dead transitions. [2024-06-27 20:31:57,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 220 transitions, 2303 flow [2024-06-27 20:31:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:31:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:31:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 20:31:57,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-27 20:31:57,731 INFO L175 Difference]: Start difference. First operand has 279 places, 206 transitions, 1831 flow. Second operand 10 states and 109 transitions. [2024-06-27 20:31:57,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 220 transitions, 2303 flow [2024-06-27 20:31:58,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 220 transitions, 2253 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:58,019 INFO L231 Difference]: Finished difference. Result has 279 places, 206 transitions, 1933 flow [2024-06-27 20:31:58,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1933, PETRI_PLACES=279, PETRI_TRANSITIONS=206} [2024-06-27 20:31:58,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 20:31:58,020 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 206 transitions, 1933 flow [2024-06-27 20:31:58,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:58,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:58,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:31:58,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:31:58,021 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:58,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266533, now seen corresponding path program 7 times [2024-06-27 20:31:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271686270] [2024-06-27 20:31:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:31:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:31:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:31:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271686270] [2024-06-27 20:31:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271686270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:31:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:31:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:31:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294615373] [2024-06-27 20:31:58,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:31:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:31:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:31:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:31:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:31:58,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:31:58,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 206 transitions, 1933 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:58,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:31:58,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:31:58,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:31:59,261 INFO L124 PetriNetUnfolderBase]: 558/1059 cut-off events. [2024-06-27 20:31:59,262 INFO L125 PetriNetUnfolderBase]: For 137879/137883 co-relation queries the response was YES. [2024-06-27 20:31:59,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5651 conditions, 1059 events. 558/1059 cut-off events. For 137879/137883 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5671 event pairs, 92 based on Foata normal form. 12/1071 useless extension candidates. Maximal degree in co-relation 5512. Up to 605 conditions per place. [2024-06-27 20:31:59,272 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 81 changer transitions 9/227 dead transitions. [2024-06-27 20:31:59,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 227 transitions, 2459 flow [2024-06-27 20:31:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:31:59,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:31:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:31:59,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-27 20:31:59,273 INFO L175 Difference]: Start difference. First operand has 279 places, 206 transitions, 1933 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:31:59,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 227 transitions, 2459 flow [2024-06-27 20:31:59,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 227 transitions, 2220 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-27 20:31:59,562 INFO L231 Difference]: Finished difference. Result has 280 places, 202 transitions, 1825 flow [2024-06-27 20:31:59,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1825, PETRI_PLACES=280, PETRI_TRANSITIONS=202} [2024-06-27 20:31:59,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-27 20:31:59,563 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 202 transitions, 1825 flow [2024-06-27 20:31:59,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 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 20:31:59,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:31:59,563 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 20:31:59,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:31:59,563 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:31:59,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:31:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1750555725, now seen corresponding path program 1 times [2024-06-27 20:31:59,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:31:59,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394094721] [2024-06-27 20:31:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:31:59,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:31:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394094721] [2024-06-27 20:32:00,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394094721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:00,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:00,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:00,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321763480] [2024-06-27 20:32:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:00,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:00,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 202 transitions, 1825 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:00,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:00,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:00,796 INFO L124 PetriNetUnfolderBase]: 528/1008 cut-off events. [2024-06-27 20:32:00,796 INFO L125 PetriNetUnfolderBase]: For 82663/82663 co-relation queries the response was YES. [2024-06-27 20:32:00,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5365 conditions, 1008 events. 528/1008 cut-off events. For 82663/82663 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5464 event pairs, 82 based on Foata normal form. 2/1010 useless extension candidates. Maximal degree in co-relation 5225. Up to 895 conditions per place. [2024-06-27 20:32:00,806 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 23 changer transitions 0/223 dead transitions. [2024-06-27 20:32:00,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 223 transitions, 2340 flow [2024-06-27 20:32:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-27 20:32:00,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-27 20:32:00,807 INFO L175 Difference]: Start difference. First operand has 280 places, 202 transitions, 1825 flow. Second operand 11 states and 109 transitions. [2024-06-27 20:32:00,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 223 transitions, 2340 flow [2024-06-27 20:32:01,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 223 transitions, 2049 flow, removed 15 selfloop flow, removed 15 redundant places. [2024-06-27 20:32:01,038 INFO L231 Difference]: Finished difference. Result has 276 places, 203 transitions, 1606 flow [2024-06-27 20:32:01,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1606, PETRI_PLACES=276, PETRI_TRANSITIONS=203} [2024-06-27 20:32:01,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-27 20:32:01,038 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 203 transitions, 1606 flow [2024-06-27 20:32:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:01,039 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 20:32:01,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:32:01,039 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -756286999, now seen corresponding path program 2 times [2024-06-27 20:32:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55854674] [2024-06-27 20:32:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:01,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55854674] [2024-06-27 20:32:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55854674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:01,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414475165] [2024-06-27 20:32:01,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:01,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:01,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 203 transitions, 1606 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:01,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:01,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:01,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:02,155 INFO L124 PetriNetUnfolderBase]: 539/1029 cut-off events. [2024-06-27 20:32:02,155 INFO L125 PetriNetUnfolderBase]: For 95381/95381 co-relation queries the response was YES. [2024-06-27 20:32:02,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 1029 events. 539/1029 cut-off events. For 95381/95381 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5619 event pairs, 96 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 5312. Up to 832 conditions per place. [2024-06-27 20:32:02,164 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 33 changer transitions 0/226 dead transitions. [2024-06-27 20:32:02,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 226 transitions, 2373 flow [2024-06-27 20:32:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 20:32:02,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-27 20:32:02,166 INFO L175 Difference]: Start difference. First operand has 276 places, 203 transitions, 1606 flow. Second operand 11 states and 117 transitions. [2024-06-27 20:32:02,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 226 transitions, 2373 flow [2024-06-27 20:32:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 226 transitions, 2282 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:02,471 INFO L231 Difference]: Finished difference. Result has 277 places, 205 transitions, 1631 flow [2024-06-27 20:32:02,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1631, PETRI_PLACES=277, PETRI_TRANSITIONS=205} [2024-06-27 20:32:02,472 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-27 20:32:02,472 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 205 transitions, 1631 flow [2024-06-27 20:32:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:02,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:02,472 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 20:32:02,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:32:02,472 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:02,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -752712079, now seen corresponding path program 3 times [2024-06-27 20:32:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162812952] [2024-06-27 20:32:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:03,285 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 20:32:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162812952] [2024-06-27 20:32:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162812952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727676818] [2024-06-27 20:32:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:03,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:03,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:03,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 205 transitions, 1631 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:03,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:03,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:03,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:03,769 INFO L124 PetriNetUnfolderBase]: 543/1037 cut-off events. [2024-06-27 20:32:03,769 INFO L125 PetriNetUnfolderBase]: For 98189/98189 co-relation queries the response was YES. [2024-06-27 20:32:03,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5454 conditions, 1037 events. 543/1037 cut-off events. For 98189/98189 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5676 event pairs, 92 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 5318. Up to 872 conditions per place. [2024-06-27 20:32:03,777 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 36 changer transitions 0/227 dead transitions. [2024-06-27 20:32:03,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 227 transitions, 2382 flow [2024-06-27 20:32:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:32:03,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:32:03,779 INFO L175 Difference]: Start difference. First operand has 277 places, 205 transitions, 1631 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:32:03,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 227 transitions, 2382 flow [2024-06-27 20:32:04,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 227 transitions, 2310 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:32:04,082 INFO L231 Difference]: Finished difference. Result has 281 places, 206 transitions, 1657 flow [2024-06-27 20:32:04,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1657, PETRI_PLACES=281, PETRI_TRANSITIONS=206} [2024-06-27 20:32:04,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-27 20:32:04,083 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 206 transitions, 1657 flow [2024-06-27 20:32:04,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:04,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:04,083 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 20:32:04,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:32:04,084 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:04,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash -752562349, now seen corresponding path program 4 times [2024-06-27 20:32:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920406183] [2024-06-27 20:32:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:04,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:04,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:04,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920406183] [2024-06-27 20:32:04,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920406183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:04,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852062541] [2024-06-27 20:32:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:04,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:04,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 206 transitions, 1657 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:04,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:04,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:04,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:05,262 INFO L124 PetriNetUnfolderBase]: 547/1045 cut-off events. [2024-06-27 20:32:05,263 INFO L125 PetriNetUnfolderBase]: For 99776/99776 co-relation queries the response was YES. [2024-06-27 20:32:05,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5515 conditions, 1045 events. 547/1045 cut-off events. For 99776/99776 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5717 event pairs, 98 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 5377. Up to 919 conditions per place. [2024-06-27 20:32:05,273 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2024-06-27 20:32:05,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 227 transitions, 2186 flow [2024-06-27 20:32:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:32:05,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 20:32:05,274 INFO L175 Difference]: Start difference. First operand has 281 places, 206 transitions, 1657 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:32:05,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 227 transitions, 2186 flow [2024-06-27 20:32:05,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 227 transitions, 2097 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:05,547 INFO L231 Difference]: Finished difference. Result has 283 places, 207 transitions, 1667 flow [2024-06-27 20:32:05,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1667, PETRI_PLACES=283, PETRI_TRANSITIONS=207} [2024-06-27 20:32:05,547 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-27 20:32:05,547 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 207 transitions, 1667 flow [2024-06-27 20:32:05,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:05,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:05,548 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 20:32:05,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:32:05,548 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1813352033, now seen corresponding path program 5 times [2024-06-27 20:32:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354017673] [2024-06-27 20:32:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:06,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:06,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354017673] [2024-06-27 20:32:06,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354017673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:06,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:06,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:06,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495324039] [2024-06-27 20:32:06,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:06,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:06,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:06,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:06,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 207 transitions, 1667 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:06,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:06,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:06,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:06,692 INFO L124 PetriNetUnfolderBase]: 544/1040 cut-off events. [2024-06-27 20:32:06,692 INFO L125 PetriNetUnfolderBase]: For 89020/89020 co-relation queries the response was YES. [2024-06-27 20:32:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 1040 events. 544/1040 cut-off events. For 89020/89020 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5701 event pairs, 95 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 5117. Up to 898 conditions per place. [2024-06-27 20:32:06,702 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 188 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2024-06-27 20:32:06,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 227 transitions, 2176 flow [2024-06-27 20:32:06,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:32:06,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-27 20:32:06,703 INFO L175 Difference]: Start difference. First operand has 283 places, 207 transitions, 1667 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:32:06,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 227 transitions, 2176 flow [2024-06-27 20:32:06,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 227 transitions, 2081 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:06,995 INFO L231 Difference]: Finished difference. Result has 285 places, 207 transitions, 1650 flow [2024-06-27 20:32:06,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1650, PETRI_PLACES=285, PETRI_TRANSITIONS=207} [2024-06-27 20:32:06,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-27 20:32:06,995 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 207 transitions, 1650 flow [2024-06-27 20:32:06,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:06,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:06,996 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 20:32:06,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:32:06,996 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:06,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:06,996 INFO L85 PathProgramCache]: Analyzing trace with hash -943555647, now seen corresponding path program 6 times [2024-06-27 20:32:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:06,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749180387] [2024-06-27 20:32:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:07,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749180387] [2024-06-27 20:32:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749180387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:07,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258282920] [2024-06-27 20:32:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:07,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:07,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:07,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:07,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:07,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 207 transitions, 1650 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:07,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:07,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:07,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:08,037 INFO L124 PetriNetUnfolderBase]: 548/1048 cut-off events. [2024-06-27 20:32:08,037 INFO L125 PetriNetUnfolderBase]: For 90535/90535 co-relation queries the response was YES. [2024-06-27 20:32:08,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5287 conditions, 1048 events. 548/1048 cut-off events. For 90535/90535 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5733 event pairs, 99 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 5147. Up to 829 conditions per place. [2024-06-27 20:32:08,047 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 48 changer transitions 0/226 dead transitions. [2024-06-27 20:32:08,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 226 transitions, 2170 flow [2024-06-27 20:32:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:32:08,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:32:08,048 INFO L175 Difference]: Start difference. First operand has 285 places, 207 transitions, 1650 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:32:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 226 transitions, 2170 flow [2024-06-27 20:32:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 226 transitions, 2087 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:08,413 INFO L231 Difference]: Finished difference. Result has 286 places, 208 transitions, 1691 flow [2024-06-27 20:32:08,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1691, PETRI_PLACES=286, PETRI_TRANSITIONS=208} [2024-06-27 20:32:08,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-27 20:32:08,413 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 208 transitions, 1691 flow [2024-06-27 20:32:08,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:08,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:08,414 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 20:32:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:32:08,414 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:08,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash -380708473, now seen corresponding path program 7 times [2024-06-27 20:32:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:08,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133702233] [2024-06-27 20:32:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:08,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:09,121 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 20:32:09,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:09,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133702233] [2024-06-27 20:32:09,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133702233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:09,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047639682] [2024-06-27 20:32:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:09,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:09,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:09,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:09,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:09,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:09,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 208 transitions, 1691 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:09,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:09,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:09,618 INFO L124 PetriNetUnfolderBase]: 552/1056 cut-off events. [2024-06-27 20:32:09,618 INFO L125 PetriNetUnfolderBase]: For 92340/92340 co-relation queries the response was YES. [2024-06-27 20:32:09,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5374 conditions, 1056 events. 552/1056 cut-off events. For 92340/92340 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5803 event pairs, 99 based on Foata normal form. 2/1058 useless extension candidates. Maximal degree in co-relation 5233. Up to 823 conditions per place. [2024-06-27 20:32:09,627 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 49 changer transitions 0/227 dead transitions. [2024-06-27 20:32:09,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 227 transitions, 2213 flow [2024-06-27 20:32:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:32:09,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:32:09,629 INFO L175 Difference]: Start difference. First operand has 286 places, 208 transitions, 1691 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:32:09,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 227 transitions, 2213 flow [2024-06-27 20:32:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 227 transitions, 2099 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:09,930 INFO L231 Difference]: Finished difference. Result has 288 places, 209 transitions, 1705 flow [2024-06-27 20:32:09,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1705, PETRI_PLACES=288, PETRI_TRANSITIONS=209} [2024-06-27 20:32:09,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-27 20:32:09,930 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 209 transitions, 1705 flow [2024-06-27 20:32:09,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:09,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:09,931 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 20:32:09,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:32:09,931 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:09,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash -380852623, now seen corresponding path program 8 times [2024-06-27 20:32:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:09,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213544104] [2024-06-27 20:32:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:09,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:10,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213544104] [2024-06-27 20:32:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213544104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738980712] [2024-06-27 20:32:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:10,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:10,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 209 transitions, 1705 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:10,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:11,210 INFO L124 PetriNetUnfolderBase]: 556/1064 cut-off events. [2024-06-27 20:32:11,211 INFO L125 PetriNetUnfolderBase]: For 94194/94194 co-relation queries the response was YES. [2024-06-27 20:32:11,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1064 events. 556/1064 cut-off events. For 94194/94194 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5862 event pairs, 97 based on Foata normal form. 2/1066 useless extension candidates. Maximal degree in co-relation 5285. Up to 809 conditions per place. [2024-06-27 20:32:11,221 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 50 changer transitions 0/228 dead transitions. [2024-06-27 20:32:11,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 228 transitions, 2229 flow [2024-06-27 20:32:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:11,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:32:11,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:32:11,222 INFO L175 Difference]: Start difference. First operand has 288 places, 209 transitions, 1705 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:32:11,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 228 transitions, 2229 flow [2024-06-27 20:32:11,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 228 transitions, 2111 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:11,548 INFO L231 Difference]: Finished difference. Result has 290 places, 210 transitions, 1719 flow [2024-06-27 20:32:11,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1719, PETRI_PLACES=290, PETRI_TRANSITIONS=210} [2024-06-27 20:32:11,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-27 20:32:11,549 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 210 transitions, 1719 flow [2024-06-27 20:32:11,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:11,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:11,549 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 20:32:11,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:32:11,550 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:11,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash -384427543, now seen corresponding path program 9 times [2024-06-27 20:32:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:11,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452659401] [2024-06-27 20:32:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:11,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:12,278 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 20:32:12,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:12,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452659401] [2024-06-27 20:32:12,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452659401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:12,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:12,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:12,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236647085] [2024-06-27 20:32:12,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:12,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:12,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:12,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 210 transitions, 1719 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:12,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:12,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:12,691 INFO L124 PetriNetUnfolderBase]: 596/1144 cut-off events. [2024-06-27 20:32:12,691 INFO L125 PetriNetUnfolderBase]: For 176086/176086 co-relation queries the response was YES. [2024-06-27 20:32:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 1144 events. 596/1144 cut-off events. For 176086/176086 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6346 event pairs, 121 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 7013. Up to 743 conditions per place. [2024-06-27 20:32:12,701 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 52 changer transitions 0/235 dead transitions. [2024-06-27 20:32:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 235 transitions, 2547 flow [2024-06-27 20:32:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:12,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:12,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:12,702 INFO L175 Difference]: Start difference. First operand has 290 places, 210 transitions, 1719 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:12,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 235 transitions, 2547 flow [2024-06-27 20:32:13,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 235 transitions, 2425 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:13,170 INFO L231 Difference]: Finished difference. Result has 292 places, 212 transitions, 1763 flow [2024-06-27 20:32:13,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=292, PETRI_TRANSITIONS=212} [2024-06-27 20:32:13,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-27 20:32:13,170 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 212 transitions, 1763 flow [2024-06-27 20:32:13,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:13,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:13,171 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 20:32:13,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:32:13,171 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:13,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:13,171 INFO L85 PathProgramCache]: Analyzing trace with hash 616105141, now seen corresponding path program 10 times [2024-06-27 20:32:13,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:13,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3557811] [2024-06-27 20:32:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:13,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3557811] [2024-06-27 20:32:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3557811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:13,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141215755] [2024-06-27 20:32:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:13,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:14,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 212 transitions, 1763 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:14,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:14,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:14,382 INFO L124 PetriNetUnfolderBase]: 600/1152 cut-off events. [2024-06-27 20:32:14,383 INFO L125 PetriNetUnfolderBase]: For 179404/179404 co-relation queries the response was YES. [2024-06-27 20:32:14,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7229 conditions, 1152 events. 600/1152 cut-off events. For 179404/179404 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6403 event pairs, 117 based on Foata normal form. 2/1154 useless extension candidates. Maximal degree in co-relation 7085. Up to 933 conditions per place. [2024-06-27 20:32:14,392 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 52 changer transitions 0/231 dead transitions. [2024-06-27 20:32:14,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 231 transitions, 2301 flow [2024-06-27 20:32:14,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:32:14,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-27 20:32:14,393 INFO L175 Difference]: Start difference. First operand has 292 places, 212 transitions, 1763 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:32:14,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 231 transitions, 2301 flow [2024-06-27 20:32:14,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 231 transitions, 2177 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:14,963 INFO L231 Difference]: Finished difference. Result has 295 places, 213 transitions, 1779 flow [2024-06-27 20:32:14,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1779, PETRI_PLACES=295, PETRI_TRANSITIONS=213} [2024-06-27 20:32:14,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-27 20:32:14,964 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 213 transitions, 1779 flow [2024-06-27 20:32:14,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:14,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:14,964 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 20:32:14,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:32:14,964 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:14,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:14,965 INFO L85 PathProgramCache]: Analyzing trace with hash -85281343, now seen corresponding path program 11 times [2024-06-27 20:32:14,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:14,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914268619] [2024-06-27 20:32:14,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:14,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:15,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914268619] [2024-06-27 20:32:15,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914268619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586505181] [2024-06-27 20:32:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:15,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:15,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:15,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 213 transitions, 1779 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:15,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:15,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:16,219 INFO L124 PetriNetUnfolderBase]: 604/1160 cut-off events. [2024-06-27 20:32:16,219 INFO L125 PetriNetUnfolderBase]: For 181842/181842 co-relation queries the response was YES. [2024-06-27 20:32:16,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7277 conditions, 1160 events. 604/1160 cut-off events. For 181842/181842 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6476 event pairs, 117 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 7132. Up to 927 conditions per place. [2024-06-27 20:32:16,231 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 53 changer transitions 0/232 dead transitions. [2024-06-27 20:32:16,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 232 transitions, 2311 flow [2024-06-27 20:32:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:16,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:32:16,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-27 20:32:16,233 INFO L175 Difference]: Start difference. First operand has 295 places, 213 transitions, 1779 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:32:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 232 transitions, 2311 flow [2024-06-27 20:32:16,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 232 transitions, 2191 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:16,857 INFO L231 Difference]: Finished difference. Result has 297 places, 214 transitions, 1795 flow [2024-06-27 20:32:16,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1795, PETRI_PLACES=297, PETRI_TRANSITIONS=214} [2024-06-27 20:32:16,857 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-27 20:32:16,857 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 214 transitions, 1795 flow [2024-06-27 20:32:16,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:16,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:16,858 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 20:32:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:32:16,858 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:16,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:16,858 INFO L85 PathProgramCache]: Analyzing trace with hash -85425493, now seen corresponding path program 12 times [2024-06-27 20:32:16,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141119358] [2024-06-27 20:32:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:17,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:17,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:17,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141119358] [2024-06-27 20:32:17,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141119358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:17,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:17,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129054508] [2024-06-27 20:32:17,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:17,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:17,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:17,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:17,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:17,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 214 transitions, 1795 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:17,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:17,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:17,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:18,018 INFO L124 PetriNetUnfolderBase]: 608/1168 cut-off events. [2024-06-27 20:32:18,018 INFO L125 PetriNetUnfolderBase]: For 185043/185043 co-relation queries the response was YES. [2024-06-27 20:32:18,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7346 conditions, 1168 events. 608/1168 cut-off events. For 185043/185043 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6532 event pairs, 115 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 7200. Up to 827 conditions per place. [2024-06-27 20:32:18,031 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 55 changer transitions 0/238 dead transitions. [2024-06-27 20:32:18,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 238 transitions, 2607 flow [2024-06-27 20:32:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:18,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:32:18,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:32:18,032 INFO L175 Difference]: Start difference. First operand has 297 places, 214 transitions, 1795 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:32:18,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 238 transitions, 2607 flow [2024-06-27 20:32:18,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 238 transitions, 2483 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:18,591 INFO L231 Difference]: Finished difference. Result has 299 places, 215 transitions, 1811 flow [2024-06-27 20:32:18,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1811, PETRI_PLACES=299, PETRI_TRANSITIONS=215} [2024-06-27 20:32:18,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2024-06-27 20:32:18,591 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 215 transitions, 1811 flow [2024-06-27 20:32:18,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:18,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:18,592 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 20:32:18,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:32:18,592 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:18,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 121377677, now seen corresponding path program 13 times [2024-06-27 20:32:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098593124] [2024-06-27 20:32:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:18,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:19,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098593124] [2024-06-27 20:32:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098593124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:19,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:19,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844381280] [2024-06-27 20:32:19,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:19,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:19,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:19,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:19,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:19,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:19,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 215 transitions, 1811 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:19,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:19,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:19,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:19,720 INFO L124 PetriNetUnfolderBase]: 599/1153 cut-off events. [2024-06-27 20:32:19,720 INFO L125 PetriNetUnfolderBase]: For 188380/188380 co-relation queries the response was YES. [2024-06-27 20:32:19,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6151 conditions, 1153 events. 599/1153 cut-off events. For 188380/188380 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6472 event pairs, 104 based on Foata normal form. 12/1165 useless extension candidates. Maximal degree in co-relation 6004. Up to 892 conditions per place. [2024-06-27 20:32:19,737 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 173 selfloop transitions, 56 changer transitions 7/238 dead transitions. [2024-06-27 20:32:19,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 238 transitions, 2389 flow [2024-06-27 20:32:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:32:19,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:32:19,738 INFO L175 Difference]: Start difference. First operand has 299 places, 215 transitions, 1811 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:32:19,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 238 transitions, 2389 flow [2024-06-27 20:32:20,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 238 transitions, 2249 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:20,131 INFO L231 Difference]: Finished difference. Result has 301 places, 213 transitions, 1798 flow [2024-06-27 20:32:20,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1673, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1798, PETRI_PLACES=301, PETRI_TRANSITIONS=213} [2024-06-27 20:32:20,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-27 20:32:20,132 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 213 transitions, 1798 flow [2024-06-27 20:32:20,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:20,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:20,132 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 20:32:20,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:32:20,132 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:20,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 823035287, now seen corresponding path program 1 times [2024-06-27 20:32:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959227133] [2024-06-27 20:32:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:20,681 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 20:32:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:20,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959227133] [2024-06-27 20:32:20,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959227133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:20,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:20,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:20,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682109062] [2024-06-27 20:32:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:20,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:20,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 213 transitions, 1798 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:20,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:20,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:20,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:21,102 INFO L124 PetriNetUnfolderBase]: 609/1179 cut-off events. [2024-06-27 20:32:21,103 INFO L125 PetriNetUnfolderBase]: For 220540/220540 co-relation queries the response was YES. [2024-06-27 20:32:21,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7202 conditions, 1179 events. 609/1179 cut-off events. For 220540/220540 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6644 event pairs, 116 based on Foata normal form. 8/1187 useless extension candidates. Maximal degree in co-relation 7054. Up to 844 conditions per place. [2024-06-27 20:32:21,115 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 53 changer transitions 8/238 dead transitions. [2024-06-27 20:32:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 238 transitions, 2620 flow [2024-06-27 20:32:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:32:21,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:32:21,117 INFO L175 Difference]: Start difference. First operand has 301 places, 213 transitions, 1798 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:32:21,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 238 transitions, 2620 flow [2024-06-27 20:32:21,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 238 transitions, 2462 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:21,736 INFO L231 Difference]: Finished difference. Result has 301 places, 210 transitions, 1730 flow [2024-06-27 20:32:21,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1730, PETRI_PLACES=301, PETRI_TRANSITIONS=210} [2024-06-27 20:32:21,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-27 20:32:21,737 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 210 transitions, 1730 flow [2024-06-27 20:32:21,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:21,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:21,737 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 20:32:21,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:32:21,737 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:21,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash 815406931, now seen corresponding path program 14 times [2024-06-27 20:32:21,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:21,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437455594] [2024-06-27 20:32:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:21,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:22,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:22,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437455594] [2024-06-27 20:32:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437455594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:22,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285635831] [2024-06-27 20:32:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:22,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:22,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:22,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:22,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 210 transitions, 1730 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:22,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:22,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:22,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:23,033 INFO L124 PetriNetUnfolderBase]: 587/1133 cut-off events. [2024-06-27 20:32:23,034 INFO L125 PetriNetUnfolderBase]: For 165392/165392 co-relation queries the response was YES. [2024-06-27 20:32:23,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6728 conditions, 1133 events. 587/1133 cut-off events. For 165392/165392 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6311 event pairs, 115 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 6580. Up to 923 conditions per place. [2024-06-27 20:32:23,046 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 51 changer transitions 0/229 dead transitions. [2024-06-27 20:32:23,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 229 transitions, 2262 flow [2024-06-27 20:32:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 20:32:23,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-27 20:32:23,047 INFO L175 Difference]: Start difference. First operand has 301 places, 210 transitions, 1730 flow. Second operand 11 states and 115 transitions. [2024-06-27 20:32:23,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 229 transitions, 2262 flow [2024-06-27 20:32:23,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 229 transitions, 2156 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:23,592 INFO L231 Difference]: Finished difference. Result has 298 places, 211 transitions, 1760 flow [2024-06-27 20:32:23,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1760, PETRI_PLACES=298, PETRI_TRANSITIONS=211} [2024-06-27 20:32:23,592 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-27 20:32:23,592 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 211 transitions, 1760 flow [2024-06-27 20:32:23,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:23,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:23,593 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 20:32:23,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:32:23,593 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:23,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1880146491, now seen corresponding path program 15 times [2024-06-27 20:32:23,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:23,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502057686] [2024-06-27 20:32:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:23,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:24,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:24,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502057686] [2024-06-27 20:32:24,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502057686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:24,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:24,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:24,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925421148] [2024-06-27 20:32:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:24,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:24,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:24,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:24,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 211 transitions, 1760 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:24,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:24,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:24,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:24,705 INFO L124 PetriNetUnfolderBase]: 584/1128 cut-off events. [2024-06-27 20:32:24,705 INFO L125 PetriNetUnfolderBase]: For 145776/145776 co-relation queries the response was YES. [2024-06-27 20:32:24,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6422 conditions, 1128 events. 584/1128 cut-off events. For 145776/145776 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6289 event pairs, 114 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6276. Up to 898 conditions per place. [2024-06-27 20:32:24,717 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 53 changer transitions 0/229 dead transitions. [2024-06-27 20:32:24,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 229 transitions, 2262 flow [2024-06-27 20:32:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:24,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:32:24,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:32:24,718 INFO L175 Difference]: Start difference. First operand has 298 places, 211 transitions, 1760 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:32:24,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 229 transitions, 2262 flow [2024-06-27 20:32:25,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 229 transitions, 2120 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:25,200 INFO L231 Difference]: Finished difference. Result has 300 places, 211 transitions, 1728 flow [2024-06-27 20:32:25,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1728, PETRI_PLACES=300, PETRI_TRANSITIONS=211} [2024-06-27 20:32:25,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-27 20:32:25,200 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 211 transitions, 1728 flow [2024-06-27 20:32:25,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:25,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:25,201 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 20:32:25,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:32:25,201 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:25,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:25,202 INFO L85 PathProgramCache]: Analyzing trace with hash 363139493, now seen corresponding path program 16 times [2024-06-27 20:32:25,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:25,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155855870] [2024-06-27 20:32:25,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:25,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:26,167 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 20:32:26,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:26,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155855870] [2024-06-27 20:32:26,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155855870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:26,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:26,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018781527] [2024-06-27 20:32:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:26,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:26,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:26,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 211 transitions, 1728 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:26,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:26,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:26,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:26,553 INFO L124 PetriNetUnfolderBase]: 588/1137 cut-off events. [2024-06-27 20:32:26,553 INFO L125 PetriNetUnfolderBase]: For 147987/147991 co-relation queries the response was YES. [2024-06-27 20:32:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 1137 events. 588/1137 cut-off events. For 147987/147991 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6349 event pairs, 129 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 6289. Up to 744 conditions per place. [2024-06-27 20:32:26,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 152 selfloop transitions, 75 changer transitions 0/229 dead transitions. [2024-06-27 20:32:26,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 229 transitions, 2256 flow [2024-06-27 20:32:26,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:26,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:32:26,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:32:26,566 INFO L175 Difference]: Start difference. First operand has 300 places, 211 transitions, 1728 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:32:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 229 transitions, 2256 flow [2024-06-27 20:32:27,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 229 transitions, 2132 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:27,149 INFO L231 Difference]: Finished difference. Result has 301 places, 212 transitions, 1786 flow [2024-06-27 20:32:27,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1786, PETRI_PLACES=301, PETRI_TRANSITIONS=212} [2024-06-27 20:32:27,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-27 20:32:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 212 transitions, 1786 flow [2024-06-27 20:32:27,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:27,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:27,150 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 20:32:27,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:32:27,150 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:27,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:27,150 INFO L85 PathProgramCache]: Analyzing trace with hash 363416199, now seen corresponding path program 2 times [2024-06-27 20:32:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947973043] [2024-06-27 20:32:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:27,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:27,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947973043] [2024-06-27 20:32:27,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947973043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:27,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:27,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049865796] [2024-06-27 20:32:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:27,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:27,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:27,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 212 transitions, 1786 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:27,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:27,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:27,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:28,207 INFO L124 PetriNetUnfolderBase]: 636/1237 cut-off events. [2024-06-27 20:32:28,207 INFO L125 PetriNetUnfolderBase]: For 281470/281474 co-relation queries the response was YES. [2024-06-27 20:32:28,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8310 conditions, 1237 events. 636/1237 cut-off events. For 281470/281474 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6980 event pairs, 143 based on Foata normal form. 8/1245 useless extension candidates. Maximal degree in co-relation 8162. Up to 674 conditions per place. [2024-06-27 20:32:28,219 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 82 changer transitions 7/238 dead transitions. [2024-06-27 20:32:28,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 238 transitions, 2628 flow [2024-06-27 20:32:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:32:28,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-27 20:32:28,220 INFO L175 Difference]: Start difference. First operand has 301 places, 212 transitions, 1786 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:32:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 238 transitions, 2628 flow [2024-06-27 20:32:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 238 transitions, 2449 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:28,975 INFO L231 Difference]: Finished difference. Result has 303 places, 210 transitions, 1762 flow [2024-06-27 20:32:28,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1607, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=303, PETRI_TRANSITIONS=210} [2024-06-27 20:32:28,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-27 20:32:28,976 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 210 transitions, 1762 flow [2024-06-27 20:32:28,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:28,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:28,976 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 20:32:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:32:28,977 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:28,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1444065907, now seen corresponding path program 17 times [2024-06-27 20:32:28,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:28,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897446257] [2024-06-27 20:32:28,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:28,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:29,686 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 20:32:29,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:29,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897446257] [2024-06-27 20:32:29,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897446257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:29,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298666277] [2024-06-27 20:32:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:29,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:29,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 210 transitions, 1762 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:29,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:29,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:30,210 INFO L124 PetriNetUnfolderBase]: 622/1207 cut-off events. [2024-06-27 20:32:30,210 INFO L125 PetriNetUnfolderBase]: For 244046/244050 co-relation queries the response was YES. [2024-06-27 20:32:30,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 1207 events. 622/1207 cut-off events. For 244046/244050 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6770 event pairs, 147 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 8102. Up to 770 conditions per place. [2024-06-27 20:32:30,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 92 changer transitions 0/227 dead transitions. [2024-06-27 20:32:30,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 227 transitions, 2284 flow [2024-06-27 20:32:30,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:32:30,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:32:30,225 INFO L175 Difference]: Start difference. First operand has 303 places, 210 transitions, 1762 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:32:30,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 227 transitions, 2284 flow [2024-06-27 20:32:31,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 227 transitions, 2122 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:32:31,008 INFO L231 Difference]: Finished difference. Result has 302 places, 211 transitions, 1818 flow [2024-06-27 20:32:31,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1818, PETRI_PLACES=302, PETRI_TRANSITIONS=211} [2024-06-27 20:32:31,009 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-27 20:32:31,009 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 211 transitions, 1818 flow [2024-06-27 20:32:31,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:31,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:31,009 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 20:32:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:32:31,009 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:31,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -247956083, now seen corresponding path program 18 times [2024-06-27 20:32:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690841180] [2024-06-27 20:32:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:31,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:31,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690841180] [2024-06-27 20:32:31,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690841180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:31,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:31,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231804963] [2024-06-27 20:32:31,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:31,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:31,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 211 transitions, 1818 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:31,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:31,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:31,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:32,083 INFO L124 PetriNetUnfolderBase]: 626/1215 cut-off events. [2024-06-27 20:32:32,083 INFO L125 PetriNetUnfolderBase]: For 238198/238202 co-relation queries the response was YES. [2024-06-27 20:32:32,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8338 conditions, 1215 events. 626/1215 cut-off events. For 238198/238202 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6822 event pairs, 145 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 8190. Up to 778 conditions per place. [2024-06-27 20:32:32,096 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 144 selfloop transitions, 83 changer transitions 0/229 dead transitions. [2024-06-27 20:32:32,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 229 transitions, 2350 flow [2024-06-27 20:32:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:32,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:32,097 INFO L175 Difference]: Start difference. First operand has 302 places, 211 transitions, 1818 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:32,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 229 transitions, 2350 flow [2024-06-27 20:32:32,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 229 transitions, 2142 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:32,983 INFO L231 Difference]: Finished difference. Result has 304 places, 212 transitions, 1812 flow [2024-06-27 20:32:32,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1812, PETRI_PLACES=304, PETRI_TRANSITIONS=212} [2024-06-27 20:32:32,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 20:32:32,984 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 212 transitions, 1812 flow [2024-06-27 20:32:32,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:32,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:32,984 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 20:32:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:32:32,985 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:32,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:32,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1928082613, now seen corresponding path program 19 times [2024-06-27 20:32:32,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:32,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103802446] [2024-06-27 20:32:32,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:32,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:33,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:33,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103802446] [2024-06-27 20:32:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103802446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:33,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:33,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:33,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412324824] [2024-06-27 20:32:33,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:33,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:33,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:33,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 212 transitions, 1812 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:33,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:33,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:33,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:34,287 INFO L124 PetriNetUnfolderBase]: 623/1210 cut-off events. [2024-06-27 20:32:34,287 INFO L125 PetriNetUnfolderBase]: For 229213/229217 co-relation queries the response was YES. [2024-06-27 20:32:34,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 1210 events. 623/1210 cut-off events. For 229213/229217 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6799 event pairs, 142 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 7884. Up to 773 conditions per place. [2024-06-27 20:32:34,300 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 82 changer transitions 0/230 dead transitions. [2024-06-27 20:32:34,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 230 transitions, 2348 flow [2024-06-27 20:32:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:32:34,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:32:34,301 INFO L175 Difference]: Start difference. First operand has 304 places, 212 transitions, 1812 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:32:34,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 230 transitions, 2348 flow [2024-06-27 20:32:35,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 230 transitions, 2156 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:35,113 INFO L231 Difference]: Finished difference. Result has 306 places, 213 transitions, 1822 flow [2024-06-27 20:32:35,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1822, PETRI_PLACES=306, PETRI_TRANSITIONS=213} [2024-06-27 20:32:35,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-27 20:32:35,114 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 213 transitions, 1822 flow [2024-06-27 20:32:35,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:35,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:35,114 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 20:32:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:32:35,114 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:35,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 931268999, now seen corresponding path program 20 times [2024-06-27 20:32:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328719386] [2024-06-27 20:32:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:35,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:35,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328719386] [2024-06-27 20:32:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328719386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359843188] [2024-06-27 20:32:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:35,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:36,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:36,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 213 transitions, 1822 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:36,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:36,428 INFO L124 PetriNetUnfolderBase]: 627/1218 cut-off events. [2024-06-27 20:32:36,428 INFO L125 PetriNetUnfolderBase]: For 233072/233076 co-relation queries the response was YES. [2024-06-27 20:32:36,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8094 conditions, 1218 events. 627/1218 cut-off events. For 233072/233076 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6859 event pairs, 144 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 7944. Up to 767 conditions per place. [2024-06-27 20:32:36,440 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 93 changer transitions 0/230 dead transitions. [2024-06-27 20:32:36,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 230 transitions, 2354 flow [2024-06-27 20:32:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:32:36,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:32:36,442 INFO L175 Difference]: Start difference. First operand has 306 places, 213 transitions, 1822 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:32:36,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 230 transitions, 2354 flow [2024-06-27 20:32:37,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 230 transitions, 2162 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:37,367 INFO L231 Difference]: Finished difference. Result has 308 places, 214 transitions, 1856 flow [2024-06-27 20:32:37,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1856, PETRI_PLACES=308, PETRI_TRANSITIONS=214} [2024-06-27 20:32:37,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-27 20:32:37,368 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 214 transitions, 1856 flow [2024-06-27 20:32:37,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:37,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:37,368 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 20:32:37,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:32:37,368 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:37,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash 931124849, now seen corresponding path program 21 times [2024-06-27 20:32:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32531332] [2024-06-27 20:32:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:38,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:38,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32531332] [2024-06-27 20:32:38,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32531332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:38,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:38,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079052081] [2024-06-27 20:32:38,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:38,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:38,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:38,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:38,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:38,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:38,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 214 transitions, 1856 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:38,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:38,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:38,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:38,719 INFO L124 PetriNetUnfolderBase]: 631/1226 cut-off events. [2024-06-27 20:32:38,719 INFO L125 PetriNetUnfolderBase]: For 235598/235602 co-relation queries the response was YES. [2024-06-27 20:32:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8183 conditions, 1226 events. 631/1226 cut-off events. For 235598/235602 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6927 event pairs, 146 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 8032. Up to 753 conditions per place. [2024-06-27 20:32:38,733 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 94 changer transitions 0/231 dead transitions. [2024-06-27 20:32:38,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 231 transitions, 2390 flow [2024-06-27 20:32:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:32:38,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-27 20:32:38,734 INFO L175 Difference]: Start difference. First operand has 308 places, 214 transitions, 1856 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:32:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 231 transitions, 2390 flow [2024-06-27 20:32:39,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 231 transitions, 2174 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:39,513 INFO L231 Difference]: Finished difference. Result has 310 places, 215 transitions, 1870 flow [2024-06-27 20:32:39,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1870, PETRI_PLACES=310, PETRI_TRANSITIONS=215} [2024-06-27 20:32:39,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-27 20:32:39,513 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 215 transitions, 1870 flow [2024-06-27 20:32:39,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:39,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:39,514 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 20:32:39,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:32:39,514 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:39,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:39,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378823, now seen corresponding path program 22 times [2024-06-27 20:32:39,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:39,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292414660] [2024-06-27 20:32:39,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:39,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:40,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:40,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292414660] [2024-06-27 20:32:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292414660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:40,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:40,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:40,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285348464] [2024-06-27 20:32:40,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:40,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:40,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:40,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:40,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:40,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:40,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 215 transitions, 1870 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:40,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:40,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:40,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:40,716 INFO L124 PetriNetUnfolderBase]: 650/1267 cut-off events. [2024-06-27 20:32:40,716 INFO L125 PetriNetUnfolderBase]: For 287320/287324 co-relation queries the response was YES. [2024-06-27 20:32:40,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9088 conditions, 1267 events. 650/1267 cut-off events. For 287320/287324 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7175 event pairs, 155 based on Foata normal form. 2/1269 useless extension candidates. Maximal degree in co-relation 8936. Up to 745 conditions per place. [2024-06-27 20:32:40,732 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 151 selfloop transitions, 85 changer transitions 0/238 dead transitions. [2024-06-27 20:32:40,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 238 transitions, 2708 flow [2024-06-27 20:32:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:40,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 20:32:40,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-27 20:32:40,734 INFO L175 Difference]: Start difference. First operand has 310 places, 215 transitions, 1870 flow. Second operand 11 states and 132 transitions. [2024-06-27 20:32:40,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 238 transitions, 2708 flow [2024-06-27 20:32:41,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 238 transitions, 2488 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:41,729 INFO L231 Difference]: Finished difference. Result has 312 places, 216 transitions, 1864 flow [2024-06-27 20:32:41,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1864, PETRI_PLACES=312, PETRI_TRANSITIONS=216} [2024-06-27 20:32:41,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 20:32:41,730 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 216 transitions, 1864 flow [2024-06-27 20:32:41,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:41,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:41,730 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 20:32:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:32:41,731 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:41,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2135003459, now seen corresponding path program 3 times [2024-06-27 20:32:41,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:41,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050746098] [2024-06-27 20:32:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:41,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050746098] [2024-06-27 20:32:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050746098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:42,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:42,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:32:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248529360] [2024-06-27 20:32:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:32:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:32:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:32:42,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:42,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 216 transitions, 1864 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:42,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:42,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:42,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:42,760 INFO L124 PetriNetUnfolderBase]: 637/1244 cut-off events. [2024-06-27 20:32:42,760 INFO L125 PetriNetUnfolderBase]: For 275245/275249 co-relation queries the response was YES. [2024-06-27 20:32:42,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7717 conditions, 1244 events. 637/1244 cut-off events. For 275245/275249 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7067 event pairs, 148 based on Foata normal form. 10/1254 useless extension candidates. Maximal degree in co-relation 7564. Up to 765 conditions per place. [2024-06-27 20:32:42,774 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 145 selfloop transitions, 82 changer transitions 8/237 dead transitions. [2024-06-27 20:32:42,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 237 transitions, 2410 flow [2024-06-27 20:32:42,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:42,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:32:42,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:32:42,775 INFO L175 Difference]: Start difference. First operand has 312 places, 216 transitions, 1864 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:32:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 237 transitions, 2410 flow [2024-06-27 20:32:43,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 237 transitions, 2206 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:43,523 INFO L231 Difference]: Finished difference. Result has 314 places, 212 transitions, 1801 flow [2024-06-27 20:32:43,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1801, PETRI_PLACES=314, PETRI_TRANSITIONS=212} [2024-06-27 20:32:43,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 20:32:43,524 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 212 transitions, 1801 flow [2024-06-27 20:32:43,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:32:43,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:43,524 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 20:32:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:32:43,524 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:43,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:43,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1928077033, now seen corresponding path program 23 times [2024-06-27 20:32:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:43,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733995333] [2024-06-27 20:32:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:44,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:44,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733995333] [2024-06-27 20:32:44,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733995333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:44,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:44,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:44,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231820673] [2024-06-27 20:32:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:44,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:44,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:44,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:44,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:44,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:44,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 212 transitions, 1801 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:44,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:44,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:44,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:44,801 INFO L124 PetriNetUnfolderBase]: 616/1201 cut-off events. [2024-06-27 20:32:44,801 INFO L125 PetriNetUnfolderBase]: For 215096/215100 co-relation queries the response was YES. [2024-06-27 20:32:44,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7586 conditions, 1201 events. 616/1201 cut-off events. For 215096/215100 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6777 event pairs, 146 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 7432. Up to 759 conditions per place. [2024-06-27 20:32:44,841 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 80 changer transitions 0/230 dead transitions. [2024-06-27 20:32:44,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 230 transitions, 2343 flow [2024-06-27 20:32:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:44,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:44,842 INFO L175 Difference]: Start difference. First operand has 314 places, 212 transitions, 1801 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:44,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 230 transitions, 2343 flow [2024-06-27 20:32:45,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 230 transitions, 2163 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 20:32:45,577 INFO L231 Difference]: Finished difference. Result has 310 places, 213 transitions, 1827 flow [2024-06-27 20:32:45,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1827, PETRI_PLACES=310, PETRI_TRANSITIONS=213} [2024-06-27 20:32:45,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-27 20:32:45,577 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 213 transitions, 1827 flow [2024-06-27 20:32:45,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:45,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:45,578 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 20:32:45,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:32:45,578 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:45,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 24 times [2024-06-27 20:32:45,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:45,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373240891] [2024-06-27 20:32:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:45,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:46,358 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 20:32:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:46,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373240891] [2024-06-27 20:32:46,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373240891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:46,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:46,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494991650] [2024-06-27 20:32:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:46,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:46,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 213 transitions, 1827 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:46,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:46,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:46,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:46,859 INFO L124 PetriNetUnfolderBase]: 649/1268 cut-off events. [2024-06-27 20:32:46,859 INFO L125 PetriNetUnfolderBase]: For 292246/292250 co-relation queries the response was YES. [2024-06-27 20:32:46,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9092 conditions, 1268 events. 649/1268 cut-off events. For 292246/292250 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7203 event pairs, 171 based on Foata normal form. 2/1270 useless extension candidates. Maximal degree in co-relation 8940. Up to 566 conditions per place. [2024-06-27 20:32:46,872 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 98 changer transitions 0/235 dead transitions. [2024-06-27 20:32:46,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 235 transitions, 2657 flow [2024-06-27 20:32:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:32:46,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:32:46,873 INFO L175 Difference]: Start difference. First operand has 310 places, 213 transitions, 1827 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:32:46,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 235 transitions, 2657 flow [2024-06-27 20:32:47,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 235 transitions, 2461 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:47,933 INFO L231 Difference]: Finished difference. Result has 312 places, 214 transitions, 1873 flow [2024-06-27 20:32:47,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=312, PETRI_TRANSITIONS=214} [2024-06-27 20:32:47,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 20:32:47,934 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 214 transitions, 1873 flow [2024-06-27 20:32:47,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:47,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:47,934 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 20:32:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:32:47,935 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:47,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1927932883, now seen corresponding path program 25 times [2024-06-27 20:32:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191752652] [2024-06-27 20:32:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:48,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:48,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191752652] [2024-06-27 20:32:48,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191752652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:48,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:48,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931941144] [2024-06-27 20:32:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:48,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:48,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:48,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:48,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 214 transitions, 1873 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:48,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:48,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:48,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:49,146 INFO L124 PetriNetUnfolderBase]: 653/1276 cut-off events. [2024-06-27 20:32:49,146 INFO L125 PetriNetUnfolderBase]: For 297208/297212 co-relation queries the response was YES. [2024-06-27 20:32:49,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9213 conditions, 1276 events. 653/1276 cut-off events. For 297208/297212 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7267 event pairs, 167 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 9060. Up to 786 conditions per place. [2024-06-27 20:32:49,161 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 146 selfloop transitions, 84 changer transitions 0/232 dead transitions. [2024-06-27 20:32:49,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 232 transitions, 2421 flow [2024-06-27 20:32:49,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:32:49,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-27 20:32:49,162 INFO L175 Difference]: Start difference. First operand has 312 places, 214 transitions, 1873 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:32:49,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 232 transitions, 2421 flow [2024-06-27 20:32:50,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 232 transitions, 2123 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-27 20:32:50,159 INFO L231 Difference]: Finished difference. Result has 312 places, 215 transitions, 1793 flow [2024-06-27 20:32:50,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1793, PETRI_PLACES=312, PETRI_TRANSITIONS=215} [2024-06-27 20:32:50,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 20:32:50,159 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 215 transitions, 1793 flow [2024-06-27 20:32:50,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:50,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:50,160 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 20:32:50,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:32:50,160 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:50,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2100625333, now seen corresponding path program 26 times [2024-06-27 20:32:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:50,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981928012] [2024-06-27 20:32:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:50,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:50,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981928012] [2024-06-27 20:32:50,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981928012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:50,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:50,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:50,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308145879] [2024-06-27 20:32:50,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:50,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:51,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:51,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 215 transitions, 1793 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:51,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:51,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:51,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:51,356 INFO L124 PetriNetUnfolderBase]: 657/1284 cut-off events. [2024-06-27 20:32:51,357 INFO L125 PetriNetUnfolderBase]: For 301254/301258 co-relation queries the response was YES. [2024-06-27 20:32:51,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 1284 events. 657/1284 cut-off events. For 301254/301258 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7315 event pairs, 155 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 8897. Up to 891 conditions per place. [2024-06-27 20:32:51,371 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 86 changer transitions 0/232 dead transitions. [2024-06-27 20:32:51,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 232 transitions, 2336 flow [2024-06-27 20:32:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 20:32:51,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-27 20:32:51,372 INFO L175 Difference]: Start difference. First operand has 312 places, 215 transitions, 1793 flow. Second operand 11 states and 118 transitions. [2024-06-27 20:32:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 232 transitions, 2336 flow [2024-06-27 20:32:52,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 232 transitions, 2136 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 20:32:52,463 INFO L231 Difference]: Finished difference. Result has 314 places, 216 transitions, 1810 flow [2024-06-27 20:32:52,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1810, PETRI_PLACES=314, PETRI_TRANSITIONS=216} [2024-06-27 20:32:52,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-27 20:32:52,464 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 216 transitions, 1810 flow [2024-06-27 20:32:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:52,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:52,464 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 20:32:52,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:32:52,465 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:52,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 2100619753, now seen corresponding path program 27 times [2024-06-27 20:32:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793194038] [2024-06-27 20:32:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:53,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793194038] [2024-06-27 20:32:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793194038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:53,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:53,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664007039] [2024-06-27 20:32:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:53,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:53,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:53,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 216 transitions, 1810 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:53,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:53,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:53,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:53,686 INFO L124 PetriNetUnfolderBase]: 697/1364 cut-off events. [2024-06-27 20:32:53,686 INFO L125 PetriNetUnfolderBase]: For 407182/407186 co-relation queries the response was YES. [2024-06-27 20:32:53,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11003 conditions, 1364 events. 697/1364 cut-off events. For 407182/407186 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7866 event pairs, 163 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 10851. Up to 840 conditions per place. [2024-06-27 20:32:53,701 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 99 changer transitions 0/239 dead transitions. [2024-06-27 20:32:53,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 239 transitions, 2698 flow [2024-06-27 20:32:53,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:32:53,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-27 20:32:53,702 INFO L175 Difference]: Start difference. First operand has 314 places, 216 transitions, 1810 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:32:53,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 239 transitions, 2698 flow [2024-06-27 20:32:54,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 239 transitions, 2499 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 20:32:54,879 INFO L231 Difference]: Finished difference. Result has 317 places, 218 transitions, 1897 flow [2024-06-27 20:32:54,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1897, PETRI_PLACES=317, PETRI_TRANSITIONS=218} [2024-06-27 20:32:54,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 20:32:54,880 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 218 transitions, 1897 flow [2024-06-27 20:32:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:54,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:54,880 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 20:32:54,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:32:54,880 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:54,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -674705401, now seen corresponding path program 28 times [2024-06-27 20:32:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059498691] [2024-06-27 20:32:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:55,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:55,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059498691] [2024-06-27 20:32:55,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059498691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:55,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:55,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:55,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824188859] [2024-06-27 20:32:55,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:55,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:55,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:55,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:55,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:55,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:55,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 218 transitions, 1897 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:55,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:55,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:55,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:56,206 INFO L124 PetriNetUnfolderBase]: 701/1372 cut-off events. [2024-06-27 20:32:56,206 INFO L125 PetriNetUnfolderBase]: For 413801/413805 co-relation queries the response was YES. [2024-06-27 20:32:56,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11130 conditions, 1372 events. 701/1372 cut-off events. For 413801/413805 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7935 event pairs, 173 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 10977. Up to 944 conditions per place. [2024-06-27 20:32:56,223 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 92 changer transitions 0/235 dead transitions. [2024-06-27 20:32:56,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 235 transitions, 2450 flow [2024-06-27 20:32:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:32:56,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:32:56,224 INFO L175 Difference]: Start difference. First operand has 317 places, 218 transitions, 1897 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:32:56,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 235 transitions, 2450 flow [2024-06-27 20:32:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 235 transitions, 2278 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:32:57,354 INFO L231 Difference]: Finished difference. Result has 321 places, 219 transitions, 1958 flow [2024-06-27 20:32:57,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=321, PETRI_TRANSITIONS=219} [2024-06-27 20:32:57,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 20:32:57,354 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 219 transitions, 1958 flow [2024-06-27 20:32:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:57,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:32:57,354 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 20:32:57,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:32:57,355 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:32:57,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:32:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 29 times [2024-06-27 20:32:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:32:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765737372] [2024-06-27 20:32:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:32:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:32:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:32:58,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:32:58,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:32:58,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765737372] [2024-06-27 20:32:58,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765737372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:32:58,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:32:58,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:32:58,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133147985] [2024-06-27 20:32:58,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:32:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:32:58,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:32:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:32:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:32:58,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:32:58,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 219 transitions, 1958 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:32:58,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:32:58,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:32:58,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:32:58,790 INFO L124 PetriNetUnfolderBase]: 705/1380 cut-off events. [2024-06-27 20:32:58,790 INFO L125 PetriNetUnfolderBase]: For 420404/420408 co-relation queries the response was YES. [2024-06-27 20:32:58,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11319 conditions, 1380 events. 705/1380 cut-off events. For 420404/420408 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8013 event pairs, 183 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 11164. Up to 987 conditions per place. [2024-06-27 20:32:58,805 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 78 changer transitions 0/237 dead transitions. [2024-06-27 20:32:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 237 transitions, 2521 flow [2024-06-27 20:32:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:32:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:32:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 20:32:58,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-27 20:32:58,807 INFO L175 Difference]: Start difference. First operand has 321 places, 219 transitions, 1958 flow. Second operand 11 states and 122 transitions. [2024-06-27 20:32:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 237 transitions, 2521 flow [2024-06-27 20:33:00,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 237 transitions, 2299 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:00,038 INFO L231 Difference]: Finished difference. Result has 323 places, 220 transitions, 1943 flow [2024-06-27 20:33:00,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1943, PETRI_PLACES=323, PETRI_TRANSITIONS=220} [2024-06-27 20:33:00,039 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 20:33:00,039 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 220 transitions, 1943 flow [2024-06-27 20:33:00,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:00,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:00,039 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 20:33:00,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:33:00,039 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:00,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1106858405, now seen corresponding path program 30 times [2024-06-27 20:33:00,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:00,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946373892] [2024-06-27 20:33:00,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:00,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946373892] [2024-06-27 20:33:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946373892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:00,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:00,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:00,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514770451] [2024-06-27 20:33:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:01,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:01,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 220 transitions, 1943 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:01,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:01,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:01,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:01,356 INFO L124 PetriNetUnfolderBase]: 709/1388 cut-off events. [2024-06-27 20:33:01,356 INFO L125 PetriNetUnfolderBase]: For 426670/426674 co-relation queries the response was YES. [2024-06-27 20:33:01,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11362 conditions, 1388 events. 709/1388 cut-off events. For 426670/426674 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8057 event pairs, 177 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 11206. Up to 995 conditions per place. [2024-06-27 20:33:01,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 85 changer transitions 0/238 dead transitions. [2024-06-27 20:33:01,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 238 transitions, 2506 flow [2024-06-27 20:33:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:33:01,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:33:01,373 INFO L175 Difference]: Start difference. First operand has 323 places, 220 transitions, 1943 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:33:01,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 238 transitions, 2506 flow [2024-06-27 20:33:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 238 transitions, 2305 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:02,733 INFO L231 Difference]: Finished difference. Result has 325 places, 221 transitions, 1961 flow [2024-06-27 20:33:02,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1961, PETRI_PLACES=325, PETRI_TRANSITIONS=221} [2024-06-27 20:33:02,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 20:33:02,734 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 221 transitions, 1961 flow [2024-06-27 20:33:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:02,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:02,734 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 20:33:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:33:02,734 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:02,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1107125811, now seen corresponding path program 4 times [2024-06-27 20:33:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152253487] [2024-06-27 20:33:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:03,316 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 20:33:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152253487] [2024-06-27 20:33:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152253487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:03,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009427546] [2024-06-27 20:33:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:03,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:03,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:03,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 221 transitions, 1961 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:03,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:03,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:03,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:03,751 INFO L124 PetriNetUnfolderBase]: 725/1424 cut-off events. [2024-06-27 20:33:03,751 INFO L125 PetriNetUnfolderBase]: For 502970/502974 co-relation queries the response was YES. [2024-06-27 20:33:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11463 conditions, 1424 events. 725/1424 cut-off events. For 502970/502974 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8340 event pairs, 167 based on Foata normal form. 10/1434 useless extension candidates. Maximal degree in co-relation 11306. Up to 954 conditions per place. [2024-06-27 20:33:03,767 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 142 selfloop transitions, 91 changer transitions 7/242 dead transitions. [2024-06-27 20:33:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 242 transitions, 2517 flow [2024-06-27 20:33:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:33:03,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-27 20:33:03,769 INFO L175 Difference]: Start difference. First operand has 325 places, 221 transitions, 1961 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:33:03,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 242 transitions, 2517 flow [2024-06-27 20:33:05,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 242 transitions, 2308 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:05,128 INFO L231 Difference]: Finished difference. Result has 327 places, 218 transitions, 1917 flow [2024-06-27 20:33:05,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1917, PETRI_PLACES=327, PETRI_TRANSITIONS=218} [2024-06-27 20:33:05,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-27 20:33:05,133 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 218 transitions, 1917 flow [2024-06-27 20:33:05,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:05,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:05,133 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 20:33:05,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:33:05,133 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:05,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:05,134 INFO L85 PathProgramCache]: Analyzing trace with hash -576728427, now seen corresponding path program 5 times [2024-06-27 20:33:05,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:05,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8660692] [2024-06-27 20:33:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:05,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:05,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8660692] [2024-06-27 20:33:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8660692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:05,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:05,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110235378] [2024-06-27 20:33:05,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:05,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:05,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:05,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 218 transitions, 1917 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:05,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:05,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:05,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:06,167 INFO L124 PetriNetUnfolderBase]: 688/1353 cut-off events. [2024-06-27 20:33:06,168 INFO L125 PetriNetUnfolderBase]: For 419579/419583 co-relation queries the response was YES. [2024-06-27 20:33:06,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9868 conditions, 1353 events. 688/1353 cut-off events. For 419579/419583 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7852 event pairs, 164 based on Foata normal form. 10/1363 useless extension candidates. Maximal degree in co-relation 9710. Up to 889 conditions per place. [2024-06-27 20:33:06,184 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 82 changer transitions 7/239 dead transitions. [2024-06-27 20:33:06,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 239 transitions, 2467 flow [2024-06-27 20:33:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:06,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:33:06,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:33:06,185 INFO L175 Difference]: Start difference. First operand has 327 places, 218 transitions, 1917 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:33:06,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 239 transitions, 2467 flow [2024-06-27 20:33:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 239 transitions, 2279 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:07,407 INFO L231 Difference]: Finished difference. Result has 326 places, 215 transitions, 1876 flow [2024-06-27 20:33:07,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1876, PETRI_PLACES=326, PETRI_TRANSITIONS=215} [2024-06-27 20:33:07,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-27 20:33:07,408 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 215 transitions, 1876 flow [2024-06-27 20:33:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:07,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:07,408 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 20:33:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:33:07,408 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:07,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 31 times [2024-06-27 20:33:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502308778] [2024-06-27 20:33:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502308778] [2024-06-27 20:33:08,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502308778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:08,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:08,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:08,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450924098] [2024-06-27 20:33:08,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:08,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:08,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:08,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 215 transitions, 1876 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:08,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:08,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:08,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:08,676 INFO L124 PetriNetUnfolderBase]: 668/1313 cut-off events. [2024-06-27 20:33:08,676 INFO L125 PetriNetUnfolderBase]: For 348754/348758 co-relation queries the response was YES. [2024-06-27 20:33:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9774 conditions, 1313 events. 668/1313 cut-off events. For 348754/348758 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7589 event pairs, 162 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 9616. Up to 883 conditions per place. [2024-06-27 20:33:08,691 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 87 changer transitions 0/232 dead transitions. [2024-06-27 20:33:08,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 232 transitions, 2425 flow [2024-06-27 20:33:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:33:08,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:33:08,692 INFO L175 Difference]: Start difference. First operand has 326 places, 215 transitions, 1876 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:33:08,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 232 transitions, 2425 flow [2024-06-27 20:33:09,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 232 transitions, 2255 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:09,753 INFO L231 Difference]: Finished difference. Result has 325 places, 216 transitions, 1933 flow [2024-06-27 20:33:09,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=325, PETRI_TRANSITIONS=216} [2024-06-27 20:33:09,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-27 20:33:09,754 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 216 transitions, 1933 flow [2024-06-27 20:33:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:09,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:09,754 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 20:33:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:33:09,755 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:09,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:09,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1107135111, now seen corresponding path program 6 times [2024-06-27 20:33:09,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:09,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903666292] [2024-06-27 20:33:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903666292] [2024-06-27 20:33:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903666292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:10,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:10,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312987269] [2024-06-27 20:33:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:10,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:10,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:10,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 216 transitions, 1933 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:10,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:10,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:10,768 INFO L124 PetriNetUnfolderBase]: 695/1374 cut-off events. [2024-06-27 20:33:10,769 INFO L125 PetriNetUnfolderBase]: For 457238/457242 co-relation queries the response was YES. [2024-06-27 20:33:10,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10764 conditions, 1374 events. 695/1374 cut-off events. For 457238/457242 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8049 event pairs, 165 based on Foata normal form. 8/1382 useless extension candidates. Maximal degree in co-relation 10606. Up to 873 conditions per place. [2024-06-27 20:33:10,784 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 86 changer transitions 8/239 dead transitions. [2024-06-27 20:33:10,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 239 transitions, 2755 flow [2024-06-27 20:33:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:33:10,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-27 20:33:10,786 INFO L175 Difference]: Start difference. First operand has 325 places, 216 transitions, 1933 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:33:10,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 239 transitions, 2755 flow [2024-06-27 20:33:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 239 transitions, 2539 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:12,240 INFO L231 Difference]: Finished difference. Result has 327 places, 213 transitions, 1873 flow [2024-06-27 20:33:12,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1717, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1873, PETRI_PLACES=327, PETRI_TRANSITIONS=213} [2024-06-27 20:33:12,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-27 20:33:12,240 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 213 transitions, 1873 flow [2024-06-27 20:33:12,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:12,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:12,241 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 20:33:12,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 20:33:12,241 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:12,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1355019783, now seen corresponding path program 32 times [2024-06-27 20:33:12,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:12,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866531050] [2024-06-27 20:33:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:12,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:13,038 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 20:33:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:13,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866531050] [2024-06-27 20:33:13,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866531050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:13,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:13,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:13,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187024358] [2024-06-27 20:33:13,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:13,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:13,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:13,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:13,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:13,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 213 transitions, 1873 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:13,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:13,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:13,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:13,522 INFO L124 PetriNetUnfolderBase]: 660/1304 cut-off events. [2024-06-27 20:33:13,523 INFO L125 PetriNetUnfolderBase]: For 389861/389861 co-relation queries the response was YES. [2024-06-27 20:33:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8844 conditions, 1304 events. 660/1304 cut-off events. For 389861/389861 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7539 event pairs, 183 based on Foata normal form. 12/1316 useless extension candidates. Maximal degree in co-relation 8685. Up to 1207 conditions per place. [2024-06-27 20:33:13,537 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 18 changer transitions 8/229 dead transitions. [2024-06-27 20:33:13,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 229 transitions, 2383 flow [2024-06-27 20:33:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 20:33:13,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:33:13,538 INFO L175 Difference]: Start difference. First operand has 327 places, 213 transitions, 1873 flow. Second operand 11 states and 110 transitions. [2024-06-27 20:33:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 229 transitions, 2383 flow [2024-06-27 20:33:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 229 transitions, 2173 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 20:33:14,597 INFO L231 Difference]: Finished difference. Result has 324 places, 209 transitions, 1677 flow [2024-06-27 20:33:14,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1677, PETRI_PLACES=324, PETRI_TRANSITIONS=209} [2024-06-27 20:33:14,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-27 20:33:14,598 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 209 transitions, 1677 flow [2024-06-27 20:33:14,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:14,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:14,598 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 20:33:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 20:33:14,598 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:14,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -783799003, now seen corresponding path program 33 times [2024-06-27 20:33:14,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:14,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307726355] [2024-06-27 20:33:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:15,401 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 20:33:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307726355] [2024-06-27 20:33:15,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307726355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:15,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:15,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:15,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782971875] [2024-06-27 20:33:15,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:15,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:15,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:15,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:15,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 209 transitions, 1677 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:15,860 INFO L124 PetriNetUnfolderBase]: 638/1263 cut-off events. [2024-06-27 20:33:15,860 INFO L125 PetriNetUnfolderBase]: For 290087/290091 co-relation queries the response was YES. [2024-06-27 20:33:15,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8497 conditions, 1263 events. 638/1263 cut-off events. For 290087/290091 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7289 event pairs, 161 based on Foata normal form. 2/1265 useless extension candidates. Maximal degree in co-relation 8340. Up to 765 conditions per place. [2024-06-27 20:33:15,874 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 89 changer transitions 0/227 dead transitions. [2024-06-27 20:33:15,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 227 transitions, 2486 flow [2024-06-27 20:33:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:33:15,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-27 20:33:15,875 INFO L175 Difference]: Start difference. First operand has 324 places, 209 transitions, 1677 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:33:15,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 227 transitions, 2486 flow [2024-06-27 20:33:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 227 transitions, 2409 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:16,958 INFO L231 Difference]: Finished difference. Result has 322 places, 210 transitions, 1831 flow [2024-06-27 20:33:16,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1831, PETRI_PLACES=322, PETRI_TRANSITIONS=210} [2024-06-27 20:33:16,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-27 20:33:16,959 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 210 transitions, 1831 flow [2024-06-27 20:33:16,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:16,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:16,959 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 20:33:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 20:33:16,959 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:16,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:16,960 INFO L85 PathProgramCache]: Analyzing trace with hash -576719127, now seen corresponding path program 7 times [2024-06-27 20:33:16,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021066830] [2024-06-27 20:33:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:17,531 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 20:33:17,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:17,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021066830] [2024-06-27 20:33:17,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021066830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:17,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:17,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:17,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948366225] [2024-06-27 20:33:17,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:17,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:17,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:17,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:17,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:17,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 210 transitions, 1831 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:17,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:17,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:17,959 INFO L124 PetriNetUnfolderBase]: 672/1337 cut-off events. [2024-06-27 20:33:17,960 INFO L125 PetriNetUnfolderBase]: For 422120/422124 co-relation queries the response was YES. [2024-06-27 20:33:17,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 1337 events. 672/1337 cut-off events. For 422120/422124 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7791 event pairs, 177 based on Foata normal form. 8/1345 useless extension candidates. Maximal degree in co-relation 9904. Up to 832 conditions per place. [2024-06-27 20:33:17,974 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 76 changer transitions 8/234 dead transitions. [2024-06-27 20:33:17,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 234 transitions, 2694 flow [2024-06-27 20:33:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 20:33:17,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-27 20:33:17,975 INFO L175 Difference]: Start difference. First operand has 322 places, 210 transitions, 1831 flow. Second operand 11 states and 131 transitions. [2024-06-27 20:33:17,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 234 transitions, 2694 flow [2024-06-27 20:33:19,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 234 transitions, 2450 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:19,141 INFO L231 Difference]: Finished difference. Result has 324 places, 207 transitions, 1726 flow [2024-06-27 20:33:19,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1726, PETRI_PLACES=324, PETRI_TRANSITIONS=207} [2024-06-27 20:33:19,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-27 20:33:19,141 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 207 transitions, 1726 flow [2024-06-27 20:33:19,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:19,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:19,142 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 20:33:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 20:33:19,142 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:19,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -584347483, now seen corresponding path program 34 times [2024-06-27 20:33:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809298458] [2024-06-27 20:33:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809298458] [2024-06-27 20:33:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809298458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476927675] [2024-06-27 20:33:19,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:19,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:19,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 207 transitions, 1726 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:19,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:19,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:20,349 INFO L124 PetriNetUnfolderBase]: 650/1291 cut-off events. [2024-06-27 20:33:20,350 INFO L125 PetriNetUnfolderBase]: For 354128/354132 co-relation queries the response was YES. [2024-06-27 20:33:20,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9484 conditions, 1291 events. 650/1291 cut-off events. For 354128/354132 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7436 event pairs, 176 based on Foata normal form. 2/1293 useless extension candidates. Maximal degree in co-relation 9326. Up to 898 conditions per place. [2024-06-27 20:33:20,365 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 75 changer transitions 0/225 dead transitions. [2024-06-27 20:33:20,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 225 transitions, 2269 flow [2024-06-27 20:33:20,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:20,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 20:33:20,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-27 20:33:20,366 INFO L175 Difference]: Start difference. First operand has 324 places, 207 transitions, 1726 flow. Second operand 11 states and 121 transitions. [2024-06-27 20:33:20,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 225 transitions, 2269 flow [2024-06-27 20:33:21,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 225 transitions, 2114 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:33:21,519 INFO L231 Difference]: Finished difference. Result has 321 places, 208 transitions, 1776 flow [2024-06-27 20:33:21,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1776, PETRI_PLACES=321, PETRI_TRANSITIONS=208} [2024-06-27 20:33:21,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-27 20:33:21,520 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 208 transitions, 1776 flow [2024-06-27 20:33:21,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:21,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:21,520 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 20:33:21,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 20:33:21,520 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:21,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1668995719, now seen corresponding path program 8 times [2024-06-27 20:33:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564453840] [2024-06-27 20:33:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:22,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:22,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564453840] [2024-06-27 20:33:22,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564453840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:22,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:22,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:22,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42762573] [2024-06-27 20:33:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:22,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:22,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:22,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:22,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:22,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 208 transitions, 1776 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:22,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:22,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:22,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:22,669 INFO L124 PetriNetUnfolderBase]: 677/1351 cut-off events. [2024-06-27 20:33:22,670 INFO L125 PetriNetUnfolderBase]: For 450487/450487 co-relation queries the response was YES. [2024-06-27 20:33:22,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10393 conditions, 1351 events. 677/1351 cut-off events. For 450487/450487 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7894 event pairs, 207 based on Foata normal form. 8/1359 useless extension candidates. Maximal degree in co-relation 10237. Up to 1219 conditions per place. [2024-06-27 20:33:22,686 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 13 changer transitions 11/227 dead transitions. [2024-06-27 20:33:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 227 transitions, 2556 flow [2024-06-27 20:33:22,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 20:33:22,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-27 20:33:22,687 INFO L175 Difference]: Start difference. First operand has 321 places, 208 transitions, 1776 flow. Second operand 11 states and 113 transitions. [2024-06-27 20:33:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 227 transitions, 2556 flow [2024-06-27 20:33:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 227 transitions, 2362 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 20:33:24,139 INFO L231 Difference]: Finished difference. Result has 323 places, 202 transitions, 1577 flow [2024-06-27 20:33:24,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1577, PETRI_PLACES=323, PETRI_TRANSITIONS=202} [2024-06-27 20:33:24,139 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-27 20:33:24,139 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 202 transitions, 1577 flow [2024-06-27 20:33:24,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:24,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:24,140 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 20:33:24,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 20:33:24,140 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:24,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1680037609, now seen corresponding path program 9 times [2024-06-27 20:33:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8343663] [2024-06-27 20:33:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:24,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:24,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:24,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8343663] [2024-06-27 20:33:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8343663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370873308] [2024-06-27 20:33:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:24,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:24,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:24,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:24,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 202 transitions, 1577 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:24,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:24,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:24,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:25,163 INFO L124 PetriNetUnfolderBase]: 649/1299 cut-off events. [2024-06-27 20:33:25,163 INFO L125 PetriNetUnfolderBase]: For 419205/419205 co-relation queries the response was YES. [2024-06-27 20:33:25,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 1299 events. 649/1299 cut-off events. For 419205/419205 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7514 event pairs, 197 based on Foata normal form. 8/1307 useless extension candidates. Maximal degree in co-relation 9329. Up to 1175 conditions per place. [2024-06-27 20:33:25,177 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 12 changer transitions 11/222 dead transitions. [2024-06-27 20:33:25,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 222 transitions, 2337 flow [2024-06-27 20:33:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-27 20:33:25,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-27 20:33:25,178 INFO L175 Difference]: Start difference. First operand has 323 places, 202 transitions, 1577 flow. Second operand 12 states and 118 transitions. [2024-06-27 20:33:25,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 222 transitions, 2337 flow [2024-06-27 20:33:26,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 222 transitions, 2292 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:26,284 INFO L231 Difference]: Finished difference. Result has 317 places, 197 transitions, 1530 flow [2024-06-27 20:33:26,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1530, PETRI_PLACES=317, PETRI_TRANSITIONS=197} [2024-06-27 20:33:26,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-27 20:33:26,284 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 197 transitions, 1530 flow [2024-06-27 20:33:26,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 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 20:33:26,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:26,285 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 20:33:26,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 20:33:26,285 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:26,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash -584353063, now seen corresponding path program 35 times [2024-06-27 20:33:26,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:26,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732548906] [2024-06-27 20:33:26,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:26,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732548906] [2024-06-27 20:33:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732548906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:27,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:27,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:27,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887493364] [2024-06-27 20:33:27,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:27,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:27,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:27,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 197 transitions, 1530 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:27,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:27,593 INFO L124 PetriNetUnfolderBase]: 623/1246 cut-off events. [2024-06-27 20:33:27,593 INFO L125 PetriNetUnfolderBase]: For 327372/327376 co-relation queries the response was YES. [2024-06-27 20:33:27,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8861 conditions, 1246 events. 623/1246 cut-off events. For 327372/327376 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7113 event pairs, 176 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8708. Up to 833 conditions per place. [2024-06-27 20:33:27,607 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 75 changer transitions 0/213 dead transitions. [2024-06-27 20:33:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 213 transitions, 1994 flow [2024-06-27 20:33:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:33:27,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-27 20:33:27,608 INFO L175 Difference]: Start difference. First operand has 317 places, 197 transitions, 1530 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:33:27,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 213 transitions, 1994 flow [2024-06-27 20:33:28,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 213 transitions, 1876 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:28,489 INFO L231 Difference]: Finished difference. Result has 311 places, 197 transitions, 1566 flow [2024-06-27 20:33:28,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1566, PETRI_PLACES=311, PETRI_TRANSITIONS=197} [2024-06-27 20:33:28,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-27 20:33:28,489 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 197 transitions, 1566 flow [2024-06-27 20:33:28,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:28,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:28,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:28,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 20:33:28,490 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:28,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:28,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1421831180, now seen corresponding path program 1 times [2024-06-27 20:33:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:28,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71494708] [2024-06-27 20:33:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:29,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:29,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71494708] [2024-06-27 20:33:29,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71494708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:29,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:29,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:29,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533553073] [2024-06-27 20:33:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:29,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:29,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:29,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:29,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:29,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:29,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 197 transitions, 1566 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:29,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:29,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:29,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:29,536 INFO L124 PetriNetUnfolderBase]: 631/1265 cut-off events. [2024-06-27 20:33:29,536 INFO L125 PetriNetUnfolderBase]: For 333733/333733 co-relation queries the response was YES. [2024-06-27 20:33:29,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8672 conditions, 1265 events. 631/1265 cut-off events. For 333733/333733 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7276 event pairs, 185 based on Foata normal form. 6/1271 useless extension candidates. Maximal degree in co-relation 8522. Up to 1128 conditions per place. [2024-06-27 20:33:29,550 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 12 changer transitions 26/217 dead transitions. [2024-06-27 20:33:29,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 217 transitions, 2042 flow [2024-06-27 20:33:29,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-27 20:33:29,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-27 20:33:29,551 INFO L175 Difference]: Start difference. First operand has 311 places, 197 transitions, 1566 flow. Second operand 11 states and 108 transitions. [2024-06-27 20:33:29,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 217 transitions, 2042 flow [2024-06-27 20:33:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 217 transitions, 1744 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:30,379 INFO L231 Difference]: Finished difference. Result has 310 places, 187 transitions, 1228 flow [2024-06-27 20:33:30,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1228, PETRI_PLACES=310, PETRI_TRANSITIONS=187} [2024-06-27 20:33:30,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-27 20:33:30,379 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 187 transitions, 1228 flow [2024-06-27 20:33:30,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:30,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:30,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 20:33:30,380 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1970058958, now seen corresponding path program 2 times [2024-06-27 20:33:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179873668] [2024-06-27 20:33:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:31,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:31,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179873668] [2024-06-27 20:33:31,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179873668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:31,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:31,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768594583] [2024-06-27 20:33:31,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:31,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:31,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:31,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:31,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 187 transitions, 1228 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:31,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:31,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:31,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:32,049 INFO L124 PetriNetUnfolderBase]: 667/1339 cut-off events. [2024-06-27 20:33:32,049 INFO L125 PetriNetUnfolderBase]: For 333350/333350 co-relation queries the response was YES. [2024-06-27 20:33:32,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1339 events. 667/1339 cut-off events. For 333350/333350 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7867 event pairs, 197 based on Foata normal form. 6/1345 useless extension candidates. Maximal degree in co-relation 8353. Up to 1136 conditions per place. [2024-06-27 20:33:32,066 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 24 changer transitions 16/234 dead transitions. [2024-06-27 20:33:32,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 234 transitions, 1920 flow [2024-06-27 20:33:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:33:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:33:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-27 20:33:32,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31265508684863524 [2024-06-27 20:33:32,068 INFO L175 Difference]: Start difference. First operand has 310 places, 187 transitions, 1228 flow. Second operand 13 states and 126 transitions. [2024-06-27 20:33:32,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 234 transitions, 1920 flow [2024-06-27 20:33:32,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 234 transitions, 1865 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:32,917 INFO L231 Difference]: Finished difference. Result has 306 places, 198 transitions, 1365 flow [2024-06-27 20:33:32,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1365, PETRI_PLACES=306, PETRI_TRANSITIONS=198} [2024-06-27 20:33:32,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-27 20:33:32,918 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 198 transitions, 1365 flow [2024-06-27 20:33:32,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:32,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:32,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:32,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 20:33:32,918 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:32,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:32,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1939487008, now seen corresponding path program 3 times [2024-06-27 20:33:32,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:32,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854426606] [2024-06-27 20:33:32,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:32,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854426606] [2024-06-27 20:33:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854426606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:33,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113220559] [2024-06-27 20:33:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:33,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:33,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 198 transitions, 1365 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:33,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:33,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:33,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:34,160 INFO L124 PetriNetUnfolderBase]: 781/1565 cut-off events. [2024-06-27 20:33:34,161 INFO L125 PetriNetUnfolderBase]: For 307577/307577 co-relation queries the response was YES. [2024-06-27 20:33:34,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9050 conditions, 1565 events. 781/1565 cut-off events. For 307577/307577 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9582 event pairs, 196 based on Foata normal form. 6/1571 useless extension candidates. Maximal degree in co-relation 8900. Up to 1115 conditions per place. [2024-06-27 20:33:34,175 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 41 changer transitions 23/271 dead transitions. [2024-06-27 20:33:34,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 271 transitions, 2204 flow [2024-06-27 20:33:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:34,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 20:33:34,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-27 20:33:34,176 INFO L175 Difference]: Start difference. First operand has 306 places, 198 transitions, 1365 flow. Second operand 12 states and 121 transitions. [2024-06-27 20:33:34,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 271 transitions, 2204 flow [2024-06-27 20:33:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 271 transitions, 2176 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:33:34,928 INFO L231 Difference]: Finished difference. Result has 312 places, 208 transitions, 1540 flow [2024-06-27 20:33:34,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1540, PETRI_PLACES=312, PETRI_TRANSITIONS=208} [2024-06-27 20:33:34,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-27 20:33:34,928 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 208 transitions, 1540 flow [2024-06-27 20:33:34,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:34,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:34,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 20:33:34,929 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:34,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -216185920, now seen corresponding path program 4 times [2024-06-27 20:33:34,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624364189] [2024-06-27 20:33:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:35,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:35,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624364189] [2024-06-27 20:33:35,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624364189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:35,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:35,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216882759] [2024-06-27 20:33:35,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:35,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:35,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:35,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:35,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:35,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 208 transitions, 1540 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:35,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:35,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:35,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:36,129 INFO L124 PetriNetUnfolderBase]: 739/1491 cut-off events. [2024-06-27 20:33:36,129 INFO L125 PetriNetUnfolderBase]: For 308185/308185 co-relation queries the response was YES. [2024-06-27 20:33:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9041 conditions, 1491 events. 739/1491 cut-off events. For 308185/308185 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9065 event pairs, 186 based on Foata normal form. 6/1497 useless extension candidates. Maximal degree in co-relation 8889. Up to 1103 conditions per place. [2024-06-27 20:33:36,141 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 40 changer transitions 21/258 dead transitions. [2024-06-27 20:33:36,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 258 transitions, 2249 flow [2024-06-27 20:33:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:36,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 20:33:36,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-27 20:33:36,142 INFO L175 Difference]: Start difference. First operand has 312 places, 208 transitions, 1540 flow. Second operand 12 states and 120 transitions. [2024-06-27 20:33:36,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 258 transitions, 2249 flow [2024-06-27 20:33:36,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 258 transitions, 2161 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-06-27 20:33:36,998 INFO L231 Difference]: Finished difference. Result has 304 places, 205 transitions, 1552 flow [2024-06-27 20:33:36,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1552, PETRI_PLACES=304, PETRI_TRANSITIONS=205} [2024-06-27 20:33:36,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-27 20:33:36,999 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 205 transitions, 1552 flow [2024-06-27 20:33:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:36,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:36,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 20:33:37,000 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:37,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 5 times [2024-06-27 20:33:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553893025] [2024-06-27 20:33:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:37,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:37,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553893025] [2024-06-27 20:33:37,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553893025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:37,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293238058] [2024-06-27 20:33:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:37,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:37,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:37,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:37,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 205 transitions, 1552 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:37,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:37,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:37,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:38,140 INFO L124 PetriNetUnfolderBase]: 695/1411 cut-off events. [2024-06-27 20:33:38,140 INFO L125 PetriNetUnfolderBase]: For 288159/288159 co-relation queries the response was YES. [2024-06-27 20:33:38,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8711 conditions, 1411 events. 695/1411 cut-off events. For 288159/288159 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8474 event pairs, 184 based on Foata normal form. 6/1417 useless extension candidates. Maximal degree in co-relation 8565. Up to 1141 conditions per place. [2024-06-27 20:33:38,156 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 30 changer transitions 26/241 dead transitions. [2024-06-27 20:33:38,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 241 transitions, 2165 flow [2024-06-27 20:33:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 20:33:38,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-27 20:33:38,157 INFO L175 Difference]: Start difference. First operand has 304 places, 205 transitions, 1552 flow. Second operand 12 states and 119 transitions. [2024-06-27 20:33:38,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 241 transitions, 2165 flow [2024-06-27 20:33:39,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 241 transitions, 2055 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 20:33:39,049 INFO L231 Difference]: Finished difference. Result has 305 places, 199 transitions, 1478 flow [2024-06-27 20:33:39,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1478, PETRI_PLACES=305, PETRI_TRANSITIONS=199} [2024-06-27 20:33:39,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-27 20:33:39,050 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 199 transitions, 1478 flow [2024-06-27 20:33:39,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:39,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:39,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 20:33:39,050 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:39,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash -211717270, now seen corresponding path program 6 times [2024-06-27 20:33:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891573944] [2024-06-27 20:33:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891573944] [2024-06-27 20:33:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891573944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:39,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:39,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:33:39,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864689395] [2024-06-27 20:33:39,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:39,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:33:39,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:39,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:33:39,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:33:39,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:39,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 199 transitions, 1478 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:39,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:39,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:39,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:40,157 INFO L124 PetriNetUnfolderBase]: 643/1315 cut-off events. [2024-06-27 20:33:40,158 INFO L125 PetriNetUnfolderBase]: For 287971/287971 co-relation queries the response was YES. [2024-06-27 20:33:40,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8345 conditions, 1315 events. 643/1315 cut-off events. For 287971/287971 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7808 event pairs, 176 based on Foata normal form. 6/1321 useless extension candidates. Maximal degree in co-relation 8199. Up to 1067 conditions per place. [2024-06-27 20:33:40,171 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 7 changer transitions 54/227 dead transitions. [2024-06-27 20:33:40,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 227 transitions, 2016 flow [2024-06-27 20:33:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-27 20:33:40,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31451612903225806 [2024-06-27 20:33:40,172 INFO L175 Difference]: Start difference. First operand has 305 places, 199 transitions, 1478 flow. Second operand 12 states and 117 transitions. [2024-06-27 20:33:40,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 227 transitions, 2016 flow [2024-06-27 20:33:41,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 227 transitions, 1948 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:33:41,011 INFO L231 Difference]: Finished difference. Result has 307 places, 170 transitions, 1127 flow [2024-06-27 20:33:41,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1410, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1127, PETRI_PLACES=307, PETRI_TRANSITIONS=170} [2024-06-27 20:33:41,012 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-27 20:33:41,012 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 170 transitions, 1127 flow [2024-06-27 20:33:41,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:41,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:41,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:41,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 20:33:41,012 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:41,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1859236438, now seen corresponding path program 7 times [2024-06-27 20:33:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:41,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491235] [2024-06-27 20:33:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:41,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:41,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:41,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491235] [2024-06-27 20:33:41,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:41,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:41,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:41,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391868341] [2024-06-27 20:33:41,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:41,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:41,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:41,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:41,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:42,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:42,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 170 transitions, 1127 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:42,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:42,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:42,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:42,413 INFO L124 PetriNetUnfolderBase]: 548/1110 cut-off events. [2024-06-27 20:33:42,413 INFO L125 PetriNetUnfolderBase]: For 287384/287384 co-relation queries the response was YES. [2024-06-27 20:33:42,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7494 conditions, 1110 events. 548/1110 cut-off events. For 287384/287384 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6361 event pairs, 158 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 7358. Up to 973 conditions per place. [2024-06-27 20:33:42,425 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 17 changer transitions 13/189 dead transitions. [2024-06-27 20:33:42,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 189 transitions, 1549 flow [2024-06-27 20:33:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:33:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:33:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 119 transitions. [2024-06-27 20:33:42,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29528535980148884 [2024-06-27 20:33:42,426 INFO L175 Difference]: Start difference. First operand has 307 places, 170 transitions, 1127 flow. Second operand 13 states and 119 transitions. [2024-06-27 20:33:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 189 transitions, 1549 flow [2024-06-27 20:33:43,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 189 transitions, 1435 flow, removed 30 selfloop flow, removed 20 redundant places. [2024-06-27 20:33:43,191 INFO L231 Difference]: Finished difference. Result has 286 places, 165 transitions, 1022 flow [2024-06-27 20:33:43,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1022, PETRI_PLACES=286, PETRI_TRANSITIONS=165} [2024-06-27 20:33:43,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-27 20:33:43,191 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 165 transitions, 1022 flow [2024-06-27 20:33:43,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:43,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:43,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 20:33:43,192 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:43,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1854767788, now seen corresponding path program 8 times [2024-06-27 20:33:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900037365] [2024-06-27 20:33:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:43,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:44,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900037365] [2024-06-27 20:33:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900037365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:44,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225577468] [2024-06-27 20:33:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:44,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:44,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:44,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:44,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 165 transitions, 1022 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:44,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:44,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:44,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:44,676 INFO L124 PetriNetUnfolderBase]: 532/1082 cut-off events. [2024-06-27 20:33:44,676 INFO L125 PetriNetUnfolderBase]: For 287051/287051 co-relation queries the response was YES. [2024-06-27 20:33:44,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1082 events. 532/1082 cut-off events. For 287051/287051 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6167 event pairs, 158 based on Foata normal form. 6/1088 useless extension candidates. Maximal degree in co-relation 7173. Up to 969 conditions per place. [2024-06-27 20:33:44,686 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 15 changer transitions 10/184 dead transitions. [2024-06-27 20:33:44,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 184 transitions, 1436 flow [2024-06-27 20:33:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:44,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 20:33:44,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 20:33:44,687 INFO L175 Difference]: Start difference. First operand has 286 places, 165 transitions, 1022 flow. Second operand 12 states and 112 transitions. [2024-06-27 20:33:44,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 184 transitions, 1436 flow [2024-06-27 20:33:45,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 184 transitions, 1394 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:45,499 INFO L231 Difference]: Finished difference. Result has 279 places, 161 transitions, 989 flow [2024-06-27 20:33:45,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=989, PETRI_PLACES=279, PETRI_TRANSITIONS=161} [2024-06-27 20:33:45,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-27 20:33:45,499 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 161 transitions, 989 flow [2024-06-27 20:33:45,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:45,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:45,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:45,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 20:33:45,500 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:45,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:45,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2122566352, now seen corresponding path program 9 times [2024-06-27 20:33:45,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:45,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012554882] [2024-06-27 20:33:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:45,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:46,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012554882] [2024-06-27 20:33:46,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012554882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:46,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:46,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901991134] [2024-06-27 20:33:46,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:46,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:46,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 161 transitions, 989 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:46,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:46,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:46,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:46,872 INFO L124 PetriNetUnfolderBase]: 520/1062 cut-off events. [2024-06-27 20:33:46,873 INFO L125 PetriNetUnfolderBase]: For 272382/272382 co-relation queries the response was YES. [2024-06-27 20:33:46,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7126 conditions, 1062 events. 520/1062 cut-off events. For 272382/272382 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6041 event pairs, 160 based on Foata normal form. 6/1068 useless extension candidates. Maximal degree in co-relation 7002. Up to 965 conditions per place. [2024-06-27 20:33:46,882 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 5 changer transitions 29/180 dead transitions. [2024-06-27 20:33:46,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 180 transitions, 1397 flow [2024-06-27 20:33:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-27 20:33:46,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-27 20:33:46,883 INFO L175 Difference]: Start difference. First operand has 279 places, 161 transitions, 989 flow. Second operand 12 states and 110 transitions. [2024-06-27 20:33:46,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 180 transitions, 1397 flow [2024-06-27 20:33:47,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 180 transitions, 1361 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:47,505 INFO L231 Difference]: Finished difference. Result has 275 places, 148 transitions, 874 flow [2024-06-27 20:33:47,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=874, PETRI_PLACES=275, PETRI_TRANSITIONS=148} [2024-06-27 20:33:47,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-27 20:33:47,505 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 148 transitions, 874 flow [2024-06-27 20:33:47,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:47,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:47,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:47,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 20:33:47,506 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:47,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:47,506 INFO L85 PathProgramCache]: Analyzing trace with hash 814547546, now seen corresponding path program 10 times [2024-06-27 20:33:47,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:47,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90770052] [2024-06-27 20:33:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:47,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:48,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90770052] [2024-06-27 20:33:48,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90770052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:48,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:48,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:48,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59046538] [2024-06-27 20:33:48,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:48,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:48,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:48,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:48,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:48,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 148 transitions, 874 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:48,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:48,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:48,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:48,766 INFO L124 PetriNetUnfolderBase]: 475/965 cut-off events. [2024-06-27 20:33:48,767 INFO L125 PetriNetUnfolderBase]: For 225299/225299 co-relation queries the response was YES. [2024-06-27 20:33:48,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 965 events. 475/965 cut-off events. For 225299/225299 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5368 event pairs, 135 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 5928. Up to 808 conditions per place. [2024-06-27 20:33:48,774 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 16 changer transitions 21/165 dead transitions. [2024-06-27 20:33:48,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 165 transitions, 1246 flow [2024-06-27 20:33:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-27 20:33:48,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-27 20:33:48,775 INFO L175 Difference]: Start difference. First operand has 275 places, 148 transitions, 874 flow. Second operand 11 states and 107 transitions. [2024-06-27 20:33:48,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 165 transitions, 1246 flow [2024-06-27 20:33:49,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 165 transitions, 1210 flow, removed 12 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:49,258 INFO L231 Difference]: Finished difference. Result has 255 places, 135 transitions, 819 flow [2024-06-27 20:33:49,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=819, PETRI_PLACES=255, PETRI_TRANSITIONS=135} [2024-06-27 20:33:49,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-27 20:33:49,259 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 135 transitions, 819 flow [2024-06-27 20:33:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:49,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:49,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:49,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 20:33:49,260 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:49,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 814969212, now seen corresponding path program 11 times [2024-06-27 20:33:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:49,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118922406] [2024-06-27 20:33:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:50,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:50,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118922406] [2024-06-27 20:33:50,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118922406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:50,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:50,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891987520] [2024-06-27 20:33:50,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:50,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:50,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:50,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:50,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 135 transitions, 819 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:50,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:50,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:50,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:50,732 INFO L124 PetriNetUnfolderBase]: 436/892 cut-off events. [2024-06-27 20:33:50,733 INFO L125 PetriNetUnfolderBase]: For 201773/201773 co-relation queries the response was YES. [2024-06-27 20:33:50,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 892 events. 436/892 cut-off events. For 201773/201773 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4856 event pairs, 135 based on Foata normal form. 6/898 useless extension candidates. Maximal degree in co-relation 5509. Up to 790 conditions per place. [2024-06-27 20:33:50,740 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 14 changer transitions 14/153 dead transitions. [2024-06-27 20:33:50,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 153 transitions, 1161 flow [2024-06-27 20:33:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 20:33:50,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 20:33:50,741 INFO L175 Difference]: Start difference. First operand has 255 places, 135 transitions, 819 flow. Second operand 12 states and 112 transitions. [2024-06-27 20:33:50,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 153 transitions, 1161 flow [2024-06-27 20:33:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 153 transitions, 1109 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-27 20:33:51,110 INFO L231 Difference]: Finished difference. Result has 237 places, 131 transitions, 780 flow [2024-06-27 20:33:51,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=780, PETRI_PLACES=237, PETRI_TRANSITIONS=131} [2024-06-27 20:33:51,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-27 20:33:51,110 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 131 transitions, 780 flow [2024-06-27 20:33:51,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:51,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:51,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:51,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 20:33:51,111 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:51,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1078472106, now seen corresponding path program 12 times [2024-06-27 20:33:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868819774] [2024-06-27 20:33:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:52,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:52,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:52,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868819774] [2024-06-27 20:33:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868819774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:52,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:52,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019515443] [2024-06-27 20:33:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:52,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:52,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:52,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 131 transitions, 780 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:52,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:52,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:52,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:52,426 INFO L124 PetriNetUnfolderBase]: 422/866 cut-off events. [2024-06-27 20:33:52,427 INFO L125 PetriNetUnfolderBase]: For 168937/168937 co-relation queries the response was YES. [2024-06-27 20:33:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 866 events. 422/866 cut-off events. For 168937/168937 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4665 event pairs, 131 based on Foata normal form. 6/872 useless extension candidates. Maximal degree in co-relation 5163. Up to 764 conditions per place. [2024-06-27 20:33:52,434 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 12 changer transitions 17/149 dead transitions. [2024-06-27 20:33:52,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 149 transitions, 1114 flow [2024-06-27 20:33:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 20:33:52,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-27 20:33:52,435 INFO L175 Difference]: Start difference. First operand has 237 places, 131 transitions, 780 flow. Second operand 12 states and 111 transitions. [2024-06-27 20:33:52,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 149 transitions, 1114 flow [2024-06-27 20:33:52,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 149 transitions, 1078 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:33:52,763 INFO L231 Difference]: Finished difference. Result has 231 places, 126 transitions, 749 flow [2024-06-27 20:33:52,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=749, PETRI_PLACES=231, PETRI_TRANSITIONS=126} [2024-06-27 20:33:52,764 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-27 20:33:52,764 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 126 transitions, 749 flow [2024-06-27 20:33:52,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:52,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:52,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:52,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 20:33:52,764 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:52,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 699678042, now seen corresponding path program 13 times [2024-06-27 20:33:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:52,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915297201] [2024-06-27 20:33:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:52,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:53,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:53,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915297201] [2024-06-27 20:33:53,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915297201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:53,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:53,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:33:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202464151] [2024-06-27 20:33:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:33:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:33:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:33:53,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:53,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 126 transitions, 749 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:53,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:53,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:53,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:53,833 INFO L124 PetriNetUnfolderBase]: 404/832 cut-off events. [2024-06-27 20:33:53,833 INFO L125 PetriNetUnfolderBase]: For 158631/158631 co-relation queries the response was YES. [2024-06-27 20:33:53,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5082 conditions, 832 events. 404/832 cut-off events. For 158631/158631 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4452 event pairs, 116 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 4979. Up to 680 conditions per place. [2024-06-27 20:33:53,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 114 selfloop transitions, 11 changer transitions 16/143 dead transitions. [2024-06-27 20:33:53,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 143 transitions, 1069 flow [2024-06-27 20:33:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:33:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:33:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-27 20:33:53,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-27 20:33:53,841 INFO L175 Difference]: Start difference. First operand has 231 places, 126 transitions, 749 flow. Second operand 11 states and 106 transitions. [2024-06-27 20:33:53,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 143 transitions, 1069 flow [2024-06-27 20:33:54,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 143 transitions, 1035 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:33:54,155 INFO L231 Difference]: Finished difference. Result has 222 places, 120 transitions, 713 flow [2024-06-27 20:33:54,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=713, PETRI_PLACES=222, PETRI_TRANSITIONS=120} [2024-06-27 20:33:54,155 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-27 20:33:54,155 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 120 transitions, 713 flow [2024-06-27 20:33:54,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:54,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:54,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 20:33:54,156 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:54,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1919218738, now seen corresponding path program 14 times [2024-06-27 20:33:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130058057] [2024-06-27 20:33:54,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130058057] [2024-06-27 20:33:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130058057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:55,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789446056] [2024-06-27 20:33:55,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:55,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:55,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:55,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 120 transitions, 713 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:55,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:55,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:55,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:55,469 INFO L124 PetriNetUnfolderBase]: 384/792 cut-off events. [2024-06-27 20:33:55,469 INFO L125 PetriNetUnfolderBase]: For 145395/145395 co-relation queries the response was YES. [2024-06-27 20:33:55,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 792 events. 384/792 cut-off events. For 145395/145395 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4179 event pairs, 121 based on Foata normal form. 6/798 useless extension candidates. Maximal degree in co-relation 4759. Up to 712 conditions per place. [2024-06-27 20:33:55,474 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 111 selfloop transitions, 10 changer transitions 14/137 dead transitions. [2024-06-27 20:33:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 137 transitions, 1021 flow [2024-06-27 20:33:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-27 20:33:55,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-27 20:33:55,475 INFO L175 Difference]: Start difference. First operand has 222 places, 120 transitions, 713 flow. Second operand 12 states and 108 transitions. [2024-06-27 20:33:55,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 137 transitions, 1021 flow [2024-06-27 20:33:55,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 137 transitions, 987 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:33:55,705 INFO L231 Difference]: Finished difference. Result has 213 places, 116 transitions, 684 flow [2024-06-27 20:33:55,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=684, PETRI_PLACES=213, PETRI_TRANSITIONS=116} [2024-06-27 20:33:55,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-27 20:33:55,706 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 116 transitions, 684 flow [2024-06-27 20:33:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:55,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:55,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:55,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 20:33:55,707 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:55,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1914750088, now seen corresponding path program 15 times [2024-06-27 20:33:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322221955] [2024-06-27 20:33:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:55,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:56,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322221955] [2024-06-27 20:33:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322221955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:56,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:56,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14327860] [2024-06-27 20:33:56,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:56,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:56,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:56,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 116 transitions, 684 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:56,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:56,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:56,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:57,143 INFO L124 PetriNetUnfolderBase]: 370/766 cut-off events. [2024-06-27 20:33:57,143 INFO L125 PetriNetUnfolderBase]: For 129754/129754 co-relation queries the response was YES. [2024-06-27 20:33:57,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 766 events. 370/766 cut-off events. For 129754/129754 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4022 event pairs, 115 based on Foata normal form. 6/772 useless extension candidates. Maximal degree in co-relation 4533. Up to 672 conditions per place. [2024-06-27 20:33:57,149 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 9 changer transitions 13/133 dead transitions. [2024-06-27 20:33:57,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 133 transitions, 984 flow [2024-06-27 20:33:57,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:57,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-27 20:33:57,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29301075268817206 [2024-06-27 20:33:57,150 INFO L175 Difference]: Start difference. First operand has 213 places, 116 transitions, 684 flow. Second operand 12 states and 109 transitions. [2024-06-27 20:33:57,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 133 transitions, 984 flow [2024-06-27 20:33:57,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 133 transitions, 956 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:33:57,327 INFO L231 Difference]: Finished difference. Result has 207 places, 111 transitions, 654 flow [2024-06-27 20:33:57,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=654, PETRI_PLACES=207, PETRI_TRANSITIONS=111} [2024-06-27 20:33:57,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-27 20:33:57,329 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 111 transitions, 654 flow [2024-06-27 20:33:57,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:57,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:57,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:57,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 20:33:57,330 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:57,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash -760331908, now seen corresponding path program 16 times [2024-06-27 20:33:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265362071] [2024-06-27 20:33:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:57,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:58,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:58,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265362071] [2024-06-27 20:33:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265362071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:58,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:58,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367598687] [2024-06-27 20:33:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:58,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:58,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 111 transitions, 654 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:58,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:58,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:58,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:33:58,764 INFO L124 PetriNetUnfolderBase]: 354/734 cut-off events. [2024-06-27 20:33:58,764 INFO L125 PetriNetUnfolderBase]: For 120659/120659 co-relation queries the response was YES. [2024-06-27 20:33:58,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 734 events. 354/734 cut-off events. For 120659/120659 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3804 event pairs, 115 based on Foata normal form. 6/740 useless extension candidates. Maximal degree in co-relation 4359. Up to 668 conditions per place. [2024-06-27 20:33:58,770 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 99 selfloop transitions, 3 changer transitions 23/127 dead transitions. [2024-06-27 20:33:58,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 127 transitions, 940 flow [2024-06-27 20:33:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:33:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:33:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-27 20:33:58,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28225806451612906 [2024-06-27 20:33:58,771 INFO L175 Difference]: Start difference. First operand has 207 places, 111 transitions, 654 flow. Second operand 12 states and 105 transitions. [2024-06-27 20:33:58,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 127 transitions, 940 flow [2024-06-27 20:33:58,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 127 transitions, 912 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 20:33:58,924 INFO L231 Difference]: Finished difference. Result has 199 places, 103 transitions, 598 flow [2024-06-27 20:33:58,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=598, PETRI_PLACES=199, PETRI_TRANSITIONS=103} [2024-06-27 20:33:58,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-27 20:33:58,925 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 103 transitions, 598 flow [2024-06-27 20:33:58,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:58,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:33:58,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:33:58,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 20:33:58,925 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:33:58,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:33:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -868299010, now seen corresponding path program 17 times [2024-06-27 20:33:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:33:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903246452] [2024-06-27 20:33:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:33:58,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:33:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:33:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:33:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:33:59,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903246452] [2024-06-27 20:33:59,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903246452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:33:59,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:33:59,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:33:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530098810] [2024-06-27 20:33:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:33:59,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:33:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:33:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:33:59,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:33:59,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:33:59,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 103 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:33:59,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:33:59,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:33:59,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:00,263 INFO L124 PetriNetUnfolderBase]: 337/696 cut-off events. [2024-06-27 20:34:00,263 INFO L125 PetriNetUnfolderBase]: For 109136/109136 co-relation queries the response was YES. [2024-06-27 20:34:00,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 696 events. 337/696 cut-off events. For 109136/109136 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3571 event pairs, 103 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4121. Up to 476 conditions per place. [2024-06-27 20:34:00,268 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 33 changer transitions 11/120 dead transitions. [2024-06-27 20:34:00,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 120 transitions, 870 flow [2024-06-27 20:34:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 20:34:00,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:34:00,269 INFO L175 Difference]: Start difference. First operand has 199 places, 103 transitions, 598 flow. Second operand 12 states and 114 transitions. [2024-06-27 20:34:00,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 120 transitions, 870 flow [2024-06-27 20:34:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 120 transitions, 846 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 20:34:00,416 INFO L231 Difference]: Finished difference. Result has 184 places, 100 transitions, 628 flow [2024-06-27 20:34:00,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=184, PETRI_TRANSITIONS=100} [2024-06-27 20:34:00,416 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-27 20:34:00,416 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 100 transitions, 628 flow [2024-06-27 20:34:00,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:00,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:00,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:00,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 20:34:00,417 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:00,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash -868471990, now seen corresponding path program 18 times [2024-06-27 20:34:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:00,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315678908] [2024-06-27 20:34:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:01,515 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 20:34:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315678908] [2024-06-27 20:34:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315678908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:01,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885684852] [2024-06-27 20:34:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:01,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:01,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:01,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:01,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:01,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:01,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 100 transitions, 628 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:01,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:01,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:01,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:01,877 INFO L124 PetriNetUnfolderBase]: 327/678 cut-off events. [2024-06-27 20:34:01,877 INFO L125 PetriNetUnfolderBase]: For 90484/90484 co-relation queries the response was YES. [2024-06-27 20:34:01,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4006 conditions, 678 events. 327/678 cut-off events. For 90484/90484 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3459 event pairs, 101 based on Foata normal form. 6/684 useless extension candidates. Maximal degree in co-relation 3926. Up to 452 conditions per place. [2024-06-27 20:34:01,881 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 32 changer transitions 10/117 dead transitions. [2024-06-27 20:34:01,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 117 transitions, 894 flow [2024-06-27 20:34:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 20:34:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:34:01,882 INFO L175 Difference]: Start difference. First operand has 184 places, 100 transitions, 628 flow. Second operand 12 states and 114 transitions. [2024-06-27 20:34:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 117 transitions, 894 flow [2024-06-27 20:34:02,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 117 transitions, 822 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:02,035 INFO L231 Difference]: Finished difference. Result has 180 places, 96 transitions, 604 flow [2024-06-27 20:34:02,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=180, PETRI_TRANSITIONS=96} [2024-06-27 20:34:02,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-27 20:34:02,035 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 96 transitions, 604 flow [2024-06-27 20:34:02,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:02,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:02,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:02,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 20:34:02,036 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:02,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:02,037 INFO L85 PathProgramCache]: Analyzing trace with hash -280176104, now seen corresponding path program 19 times [2024-06-27 20:34:02,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:02,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888318990] [2024-06-27 20:34:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:02,898 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 20:34:02,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:02,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888318990] [2024-06-27 20:34:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888318990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:02,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:02,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:02,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877629209] [2024-06-27 20:34:02,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:02,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:02,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:03,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:03,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 96 transitions, 604 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:03,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:03,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:03,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:03,316 INFO L124 PetriNetUnfolderBase]: 315/654 cut-off events. [2024-06-27 20:34:03,316 INFO L125 PetriNetUnfolderBase]: For 85450/85450 co-relation queries the response was YES. [2024-06-27 20:34:03,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3880 conditions, 654 events. 315/654 cut-off events. For 85450/85450 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3312 event pairs, 105 based on Foata normal form. 6/660 useless extension candidates. Maximal degree in co-relation 3802. Up to 448 conditions per place. [2024-06-27 20:34:03,320 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 64 selfloop transitions, 35 changer transitions 11/112 dead transitions. [2024-06-27 20:34:03,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 112 transitions, 858 flow [2024-06-27 20:34:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:03,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 20:34:03,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 20:34:03,321 INFO L175 Difference]: Start difference. First operand has 180 places, 96 transitions, 604 flow. Second operand 12 states and 112 transitions. [2024-06-27 20:34:03,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 112 transitions, 858 flow [2024-06-27 20:34:03,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 112 transitions, 786 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:34:03,453 INFO L231 Difference]: Finished difference. Result has 174 places, 93 transitions, 590 flow [2024-06-27 20:34:03,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=590, PETRI_PLACES=174, PETRI_TRANSITIONS=93} [2024-06-27 20:34:03,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-27 20:34:03,453 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 93 transitions, 590 flow [2024-06-27 20:34:03,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:03,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:03,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 20:34:03,454 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash -640397860, now seen corresponding path program 20 times [2024-06-27 20:34:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090098217] [2024-06-27 20:34:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:03,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090098217] [2024-06-27 20:34:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090098217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:04,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364933471] [2024-06-27 20:34:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:04,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:04,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:04,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:04,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 93 transitions, 590 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:04,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:04,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:04,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:04,796 INFO L124 PetriNetUnfolderBase]: 305/636 cut-off events. [2024-06-27 20:34:04,797 INFO L125 PetriNetUnfolderBase]: For 78174/78174 co-relation queries the response was YES. [2024-06-27 20:34:04,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 636 events. 305/636 cut-off events. For 78174/78174 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3180 event pairs, 101 based on Foata normal form. 6/642 useless extension candidates. Maximal degree in co-relation 3664. Up to 438 conditions per place. [2024-06-27 20:34:04,801 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 67 selfloop transitions, 28 changer transitions 13/110 dead transitions. [2024-06-27 20:34:04,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 110 transitions, 842 flow [2024-06-27 20:34:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:34:04,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:34:04,803 INFO L175 Difference]: Start difference. First operand has 174 places, 93 transitions, 590 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:34:04,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 110 transitions, 842 flow [2024-06-27 20:34:04,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 110 transitions, 766 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:04,923 INFO L231 Difference]: Finished difference. Result has 170 places, 88 transitions, 549 flow [2024-06-27 20:34:04,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=549, PETRI_PLACES=170, PETRI_TRANSITIONS=88} [2024-06-27 20:34:04,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-27 20:34:04,924 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 88 transitions, 549 flow [2024-06-27 20:34:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:04,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:04,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:04,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 20:34:04,924 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:04,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:04,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1190108920, now seen corresponding path program 21 times [2024-06-27 20:34:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231135123] [2024-06-27 20:34:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231135123] [2024-06-27 20:34:05,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231135123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:05,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:05,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485526611] [2024-06-27 20:34:05,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:05,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:05,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:05,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:05,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 88 transitions, 549 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:05,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:05,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:05,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:05,917 INFO L124 PetriNetUnfolderBase]: 295/614 cut-off events. [2024-06-27 20:34:05,918 INFO L125 PetriNetUnfolderBase]: For 73490/73490 co-relation queries the response was YES. [2024-06-27 20:34:05,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 614 events. 295/614 cut-off events. For 73490/73490 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3029 event pairs, 95 based on Foata normal form. 6/620 useless extension candidates. Maximal degree in co-relation 3532. Up to 428 conditions per place. [2024-06-27 20:34:05,921 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 61 selfloop transitions, 31 changer transitions 11/105 dead transitions. [2024-06-27 20:34:05,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 105 transitions, 791 flow [2024-06-27 20:34:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:34:05,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:34:05,922 INFO L175 Difference]: Start difference. First operand has 170 places, 88 transitions, 549 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:34:05,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 105 transitions, 791 flow [2024-06-27 20:34:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 105 transitions, 725 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 20:34:06,030 INFO L231 Difference]: Finished difference. Result has 162 places, 85 transitions, 533 flow [2024-06-27 20:34:06,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=533, PETRI_PLACES=162, PETRI_TRANSITIONS=85} [2024-06-27 20:34:06,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-27 20:34:06,031 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 85 transitions, 533 flow [2024-06-27 20:34:06,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:06,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:06,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:06,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 20:34:06,031 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:06,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:06,032 INFO L85 PathProgramCache]: Analyzing trace with hash 556101878, now seen corresponding path program 22 times [2024-06-27 20:34:06,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:06,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511597933] [2024-06-27 20:34:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:06,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:06,762 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 20:34:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511597933] [2024-06-27 20:34:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511597933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132701235] [2024-06-27 20:34:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:06,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:06,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 85 transitions, 533 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:06,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:06,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:06,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:07,101 INFO L124 PetriNetUnfolderBase]: 270/563 cut-off events. [2024-06-27 20:34:07,101 INFO L125 PetriNetUnfolderBase]: For 53842/53842 co-relation queries the response was YES. [2024-06-27 20:34:07,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3005 conditions, 563 events. 270/563 cut-off events. For 53842/53842 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2724 event pairs, 86 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 2936. Up to 385 conditions per place. [2024-06-27 20:34:07,105 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 64 selfloop transitions, 25 changer transitions 11/102 dead transitions. [2024-06-27 20:34:07,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 769 flow [2024-06-27 20:34:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:34:07,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:34:07,106 INFO L175 Difference]: Start difference. First operand has 162 places, 85 transitions, 533 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:34:07,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 769 flow [2024-06-27 20:34:07,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 102 transitions, 701 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:07,173 INFO L231 Difference]: Finished difference. Result has 158 places, 82 transitions, 503 flow [2024-06-27 20:34:07,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=158, PETRI_TRANSITIONS=82} [2024-06-27 20:34:07,185 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-27 20:34:07,185 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 82 transitions, 503 flow [2024-06-27 20:34:07,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:07,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:07,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 20:34:07,186 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:07,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:07,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1476677844, now seen corresponding path program 23 times [2024-06-27 20:34:07,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:07,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096928375] [2024-06-27 20:34:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:07,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:07,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096928375] [2024-06-27 20:34:07,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096928375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:07,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729549609] [2024-06-27 20:34:07,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:07,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:08,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:08,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 82 transitions, 503 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:08,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:08,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:08,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:08,217 INFO L124 PetriNetUnfolderBase]: 260/545 cut-off events. [2024-06-27 20:34:08,218 INFO L125 PetriNetUnfolderBase]: For 50308/50308 co-relation queries the response was YES. [2024-06-27 20:34:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 545 events. 260/545 cut-off events. For 50308/50308 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2599 event pairs, 84 based on Foata normal form. 6/551 useless extension candidates. Maximal degree in co-relation 2822. Up to 375 conditions per place. [2024-06-27 20:34:08,221 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 29 changer transitions 11/99 dead transitions. [2024-06-27 20:34:08,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 99 transitions, 733 flow [2024-06-27 20:34:08,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-27 20:34:08,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-27 20:34:08,222 INFO L175 Difference]: Start difference. First operand has 158 places, 82 transitions, 503 flow. Second operand 12 states and 114 transitions. [2024-06-27 20:34:08,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 99 transitions, 733 flow [2024-06-27 20:34:08,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 99 transitions, 677 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:08,304 INFO L231 Difference]: Finished difference. Result has 153 places, 79 transitions, 493 flow [2024-06-27 20:34:08,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=493, PETRI_PLACES=153, PETRI_TRANSITIONS=79} [2024-06-27 20:34:08,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2024-06-27 20:34:08,305 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 79 transitions, 493 flow [2024-06-27 20:34:08,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:08,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:08,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 20:34:08,305 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:08,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash -280349084, now seen corresponding path program 24 times [2024-06-27 20:34:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437252715] [2024-06-27 20:34:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:08,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:09,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:09,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:09,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437252715] [2024-06-27 20:34:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437252715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:09,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:09,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:09,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479002079] [2024-06-27 20:34:09,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:09,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:09,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:09,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:09,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:09,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 79 transitions, 493 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:09,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:09,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:09,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:09,681 INFO L124 PetriNetUnfolderBase]: 250/527 cut-off events. [2024-06-27 20:34:09,682 INFO L125 PetriNetUnfolderBase]: For 46896/46896 co-relation queries the response was YES. [2024-06-27 20:34:09,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 527 events. 250/527 cut-off events. For 46896/46896 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2496 event pairs, 84 based on Foata normal form. 6/533 useless extension candidates. Maximal degree in co-relation 2732. Up to 357 conditions per place. [2024-06-27 20:34:09,685 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 28 changer transitions 14/95 dead transitions. [2024-06-27 20:34:09,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 95 transitions, 713 flow [2024-06-27 20:34:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-27 20:34:09,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-27 20:34:09,686 INFO L175 Difference]: Start difference. First operand has 153 places, 79 transitions, 493 flow. Second operand 12 states and 111 transitions. [2024-06-27 20:34:09,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 95 transitions, 713 flow [2024-06-27 20:34:09,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 95 transitions, 649 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:09,751 INFO L231 Difference]: Finished difference. Result has 149 places, 75 transitions, 470 flow [2024-06-27 20:34:09,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=470, PETRI_PLACES=149, PETRI_TRANSITIONS=75} [2024-06-27 20:34:09,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-27 20:34:09,752 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 75 transitions, 470 flow [2024-06-27 20:34:09,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:09,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:09,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:09,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 20:34:09,752 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:09,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:09,753 INFO L85 PathProgramCache]: Analyzing trace with hash 702360480, now seen corresponding path program 25 times [2024-06-27 20:34:09,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:09,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069946855] [2024-06-27 20:34:09,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:09,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:10,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069946855] [2024-06-27 20:34:10,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069946855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:10,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560286811] [2024-06-27 20:34:10,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:10,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:10,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 75 transitions, 470 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:10,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:10,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:11,031 INFO L124 PetriNetUnfolderBase]: 236/501 cut-off events. [2024-06-27 20:34:11,031 INFO L125 PetriNetUnfolderBase]: For 43600/43600 co-relation queries the response was YES. [2024-06-27 20:34:11,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 501 events. 236/501 cut-off events. For 43600/43600 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2330 event pairs, 80 based on Foata normal form. 6/507 useless extension candidates. Maximal degree in co-relation 2612. Up to 331 conditions per place. [2024-06-27 20:34:11,033 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 46 selfloop transitions, 26 changer transitions 17/91 dead transitions. [2024-06-27 20:34:11,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 91 transitions, 682 flow [2024-06-27 20:34:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-27 20:34:11,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-27 20:34:11,035 INFO L175 Difference]: Start difference. First operand has 149 places, 75 transitions, 470 flow. Second operand 12 states and 110 transitions. [2024-06-27 20:34:11,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 91 transitions, 682 flow [2024-06-27 20:34:11,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 91 transitions, 618 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:11,089 INFO L231 Difference]: Finished difference. Result has 143 places, 70 transitions, 439 flow [2024-06-27 20:34:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=439, PETRI_PLACES=143, PETRI_TRANSITIONS=70} [2024-06-27 20:34:11,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-27 20:34:11,090 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 70 transitions, 439 flow [2024-06-27 20:34:11,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:11,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:11,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:11,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 20:34:11,091 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:11,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1543107112, now seen corresponding path program 26 times [2024-06-27 20:34:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:11,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373820315] [2024-06-27 20:34:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:11,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373820315] [2024-06-27 20:34:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373820315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:11,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:11,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:11,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868526474] [2024-06-27 20:34:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:12,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:12,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 70 transitions, 439 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:12,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:12,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:12,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:12,322 INFO L124 PetriNetUnfolderBase]: 218/467 cut-off events. [2024-06-27 20:34:12,323 INFO L125 PetriNetUnfolderBase]: For 38880/38880 co-relation queries the response was YES. [2024-06-27 20:34:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2506 conditions, 467 events. 218/467 cut-off events. For 38880/38880 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2137 event pairs, 76 based on Foata normal form. 6/473 useless extension candidates. Maximal degree in co-relation 2446. Up to 313 conditions per place. [2024-06-27 20:34:12,325 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 51 selfloop transitions, 19 changer transitions 14/86 dead transitions. [2024-06-27 20:34:12,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 86 transitions, 641 flow [2024-06-27 20:34:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 109 transitions. [2024-06-27 20:34:12,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29301075268817206 [2024-06-27 20:34:12,326 INFO L175 Difference]: Start difference. First operand has 143 places, 70 transitions, 439 flow. Second operand 12 states and 109 transitions. [2024-06-27 20:34:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 86 transitions, 641 flow [2024-06-27 20:34:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 86 transitions, 579 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:12,375 INFO L231 Difference]: Finished difference. Result has 135 places, 66 transitions, 400 flow [2024-06-27 20:34:12,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=400, PETRI_PLACES=135, PETRI_TRANSITIONS=66} [2024-06-27 20:34:12,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-27 20:34:12,375 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 66 transitions, 400 flow [2024-06-27 20:34:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:12,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:12,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:12,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 20:34:12,376 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:12,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -363621240, now seen corresponding path program 27 times [2024-06-27 20:34:12,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:12,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233834054] [2024-06-27 20:34:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:12,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:13,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233834054] [2024-06-27 20:34:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233834054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:34:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034277495] [2024-06-27 20:34:13,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:13,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:34:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:34:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:34:13,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 66 transitions, 400 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:13,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:13,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:13,657 INFO L124 PetriNetUnfolderBase]: 204/441 cut-off events. [2024-06-27 20:34:13,657 INFO L125 PetriNetUnfolderBase]: For 33002/33002 co-relation queries the response was YES. [2024-06-27 20:34:13,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2324 conditions, 441 events. 204/441 cut-off events. For 33002/33002 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1988 event pairs, 72 based on Foata normal form. 6/447 useless extension candidates. Maximal degree in co-relation 2268. Up to 287 conditions per place. [2024-06-27 20:34:13,660 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 44 selfloop transitions, 17 changer transitions 18/81 dead transitions. [2024-06-27 20:34:13,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 81 transitions, 590 flow [2024-06-27 20:34:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 107 transitions. [2024-06-27 20:34:13,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28763440860215056 [2024-06-27 20:34:13,661 INFO L175 Difference]: Start difference. First operand has 135 places, 66 transitions, 400 flow. Second operand 12 states and 107 transitions. [2024-06-27 20:34:13,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 81 transitions, 590 flow [2024-06-27 20:34:13,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 81 transitions, 544 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:13,715 INFO L231 Difference]: Finished difference. Result has 129 places, 60 transitions, 364 flow [2024-06-27 20:34:13,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=364, PETRI_PLACES=129, PETRI_TRANSITIONS=60} [2024-06-27 20:34:13,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-27 20:34:13,716 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 60 transitions, 364 flow [2024-06-27 20:34:13,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:13,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:13,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:13,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 20:34:13,716 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:13,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:13,717 INFO L85 PathProgramCache]: Analyzing trace with hash -707000108, now seen corresponding path program 28 times [2024-06-27 20:34:13,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:13,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822583382] [2024-06-27 20:34:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:14,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822583382] [2024-06-27 20:34:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822583382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588401464] [2024-06-27 20:34:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:14,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:14,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 60 transitions, 364 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:14,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:14,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:14,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:14,936 INFO L124 PetriNetUnfolderBase]: 187/406 cut-off events. [2024-06-27 20:34:14,937 INFO L125 PetriNetUnfolderBase]: For 28914/28914 co-relation queries the response was YES. [2024-06-27 20:34:14,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 406 events. 187/406 cut-off events. For 28914/28914 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1788 event pairs, 68 based on Foata normal form. 6/412 useless extension candidates. Maximal degree in co-relation 2099. Up to 277 conditions per place. [2024-06-27 20:34:14,939 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 45 selfloop transitions, 18 changer transitions 12/77 dead transitions. [2024-06-27 20:34:14,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 77 transitions, 550 flow [2024-06-27 20:34:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-27 20:34:14,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-27 20:34:14,939 INFO L175 Difference]: Start difference. First operand has 129 places, 60 transitions, 364 flow. Second operand 12 states and 113 transitions. [2024-06-27 20:34:14,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 77 transitions, 550 flow [2024-06-27 20:34:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 77 transitions, 504 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:34:14,967 INFO L231 Difference]: Finished difference. Result has 119 places, 56 transitions, 337 flow [2024-06-27 20:34:14,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=337, PETRI_PLACES=119, PETRI_TRANSITIONS=56} [2024-06-27 20:34:14,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-27 20:34:14,967 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 56 transitions, 337 flow [2024-06-27 20:34:14,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:14,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:14,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 20:34:14,968 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:14,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:14,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1849982746, now seen corresponding path program 29 times [2024-06-27 20:34:14,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:14,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286725339] [2024-06-27 20:34:14,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:15,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286725339] [2024-06-27 20:34:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286725339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:15,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:15,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:15,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741589801] [2024-06-27 20:34:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:15,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:15,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:15,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:15,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 56 transitions, 337 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:15,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:15,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:15,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:15,955 INFO L124 PetriNetUnfolderBase]: 163/354 cut-off events. [2024-06-27 20:34:15,955 INFO L125 PetriNetUnfolderBase]: For 18184/18184 co-relation queries the response was YES. [2024-06-27 20:34:15,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1674 conditions, 354 events. 163/354 cut-off events. For 18184/18184 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1470 event pairs, 55 based on Foata normal form. 6/360 useless extension candidates. Maximal degree in co-relation 1626. Up to 234 conditions per place. [2024-06-27 20:34:15,957 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 43 selfloop transitions, 17 changer transitions 11/73 dead transitions. [2024-06-27 20:34:15,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 73 transitions, 515 flow [2024-06-27 20:34:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:15,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-27 20:34:15,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-27 20:34:15,958 INFO L175 Difference]: Start difference. First operand has 119 places, 56 transitions, 337 flow. Second operand 12 states and 112 transitions. [2024-06-27 20:34:15,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 73 transitions, 515 flow [2024-06-27 20:34:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 73 transitions, 471 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:34:15,976 INFO L231 Difference]: Finished difference. Result has 113 places, 53 transitions, 315 flow [2024-06-27 20:34:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=315, PETRI_PLACES=113, PETRI_TRANSITIONS=53} [2024-06-27 20:34:15,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-27 20:34:15,976 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 53 transitions, 315 flow [2024-06-27 20:34:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:15,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:15,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 20:34:15,977 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:15,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:15,977 INFO L85 PathProgramCache]: Analyzing trace with hash 561423376, now seen corresponding path program 30 times [2024-06-27 20:34:15,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781837685] [2024-06-27 20:34:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:15,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:16,712 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 20:34:16,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:16,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781837685] [2024-06-27 20:34:16,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781837685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:16,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:16,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:34:16,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247988377] [2024-06-27 20:34:16,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:16,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:34:16,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:34:16,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:34:16,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:16,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 53 transitions, 315 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:16,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:16,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:16,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:17,008 INFO L124 PetriNetUnfolderBase]: 153/336 cut-off events. [2024-06-27 20:34:17,008 INFO L125 PetriNetUnfolderBase]: For 15486/15486 co-relation queries the response was YES. [2024-06-27 20:34:17,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 336 events. 153/336 cut-off events. For 15486/15486 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1382 event pairs, 51 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 1518. Up to 198 conditions per place. [2024-06-27 20:34:17,010 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 34 selfloop transitions, 13 changer transitions 19/68 dead transitions. [2024-06-27 20:34:17,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 68 transitions, 479 flow [2024-06-27 20:34:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-27 20:34:17,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-27 20:34:17,011 INFO L175 Difference]: Start difference. First operand has 113 places, 53 transitions, 315 flow. Second operand 12 states and 108 transitions. [2024-06-27 20:34:17,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 68 transitions, 479 flow [2024-06-27 20:34:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 68 transitions, 439 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:34:17,024 INFO L231 Difference]: Finished difference. Result has 108 places, 44 transitions, 264 flow [2024-06-27 20:34:17,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=108, PETRI_TRANSITIONS=44} [2024-06-27 20:34:17,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-27 20:34:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 44 transitions, 264 flow [2024-06-27 20:34:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:17,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:17,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 20:34:17,025 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:17,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1663861232, now seen corresponding path program 31 times [2024-06-27 20:34:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699957854] [2024-06-27 20:34:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:17,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:17,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:17,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699957854] [2024-06-27 20:34:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699957854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089058337] [2024-06-27 20:34:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:17,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:17,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 44 transitions, 264 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:17,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:17,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:18,110 INFO L124 PetriNetUnfolderBase]: 126/283 cut-off events. [2024-06-27 20:34:18,110 INFO L125 PetriNetUnfolderBase]: For 13794/13794 co-relation queries the response was YES. [2024-06-27 20:34:18,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 283 events. 126/283 cut-off events. For 13794/13794 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1088 event pairs, 18 based on Foata normal form. 6/289 useless extension candidates. Maximal degree in co-relation 1331. Up to 116 conditions per place. [2024-06-27 20:34:18,111 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 23 selfloop transitions, 18 changer transitions 17/60 dead transitions. [2024-06-27 20:34:18,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 60 transitions, 414 flow [2024-06-27 20:34:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:18,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:18,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-27 20:34:18,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27956989247311825 [2024-06-27 20:34:18,112 INFO L175 Difference]: Start difference. First operand has 108 places, 44 transitions, 264 flow. Second operand 12 states and 104 transitions. [2024-06-27 20:34:18,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 60 transitions, 414 flow [2024-06-27 20:34:18,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 60 transitions, 372 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-27 20:34:18,123 INFO L231 Difference]: Finished difference. Result has 94 places, 37 transitions, 229 flow [2024-06-27 20:34:18,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=37} [2024-06-27 20:34:18,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-27 20:34:18,124 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 37 transitions, 229 flow [2024-06-27 20:34:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:18,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:18,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 20:34:18,124 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:18,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash 341564944, now seen corresponding path program 32 times [2024-06-27 20:34:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046417817] [2024-06-27 20:34:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:18,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:18,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046417817] [2024-06-27 20:34:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046417817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:34:18,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467530533] [2024-06-27 20:34:18,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:34:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:18,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:34:18,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:34:19,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:19,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 37 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:19,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:19,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:19,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:19,227 INFO L124 PetriNetUnfolderBase]: 105/240 cut-off events. [2024-06-27 20:34:19,227 INFO L125 PetriNetUnfolderBase]: For 8756/8756 co-relation queries the response was YES. [2024-06-27 20:34:19,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 240 events. 105/240 cut-off events. For 8756/8756 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 889 event pairs, 39 based on Foata normal form. 6/246 useless extension candidates. Maximal degree in co-relation 1112. Up to 134 conditions per place. [2024-06-27 20:34:19,228 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 26 selfloop transitions, 13 changer transitions 10/51 dead transitions. [2024-06-27 20:34:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 51 transitions, 357 flow [2024-06-27 20:34:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2024-06-27 20:34:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27956989247311825 [2024-06-27 20:34:19,229 INFO L175 Difference]: Start difference. First operand has 94 places, 37 transitions, 229 flow. Second operand 12 states and 104 transitions. [2024-06-27 20:34:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 51 transitions, 357 flow [2024-06-27 20:34:19,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 51 transitions, 307 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 20:34:19,235 INFO L231 Difference]: Finished difference. Result has 82 places, 33 transitions, 189 flow [2024-06-27 20:34:19,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=189, PETRI_PLACES=82, PETRI_TRANSITIONS=33} [2024-06-27 20:34:19,235 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-27 20:34:19,235 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 33 transitions, 189 flow [2024-06-27 20:34:19,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:19,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:19,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:19,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 20:34:19,236 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:19,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash -47126282, now seen corresponding path program 33 times [2024-06-27 20:34:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:19,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491818536] [2024-06-27 20:34:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491818536] [2024-06-27 20:34:20,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491818536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:20,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:20,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804595910] [2024-06-27 20:34:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:20,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:20,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:20,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 33 transitions, 189 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:20,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:20,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:20,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:20,420 INFO L124 PetriNetUnfolderBase]: 78/183 cut-off events. [2024-06-27 20:34:20,420 INFO L125 PetriNetUnfolderBase]: For 3946/3946 co-relation queries the response was YES. [2024-06-27 20:34:20,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 183 events. 78/183 cut-off events. For 3946/3946 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 588 event pairs, 30 based on Foata normal form. 6/189 useless extension candidates. Maximal degree in co-relation 727. Up to 103 conditions per place. [2024-06-27 20:34:20,421 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 24 selfloop transitions, 8 changer transitions 14/48 dead transitions. [2024-06-27 20:34:20,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 48 transitions, 313 flow [2024-06-27 20:34:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-27 20:34:20,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28225806451612906 [2024-06-27 20:34:20,422 INFO L175 Difference]: Start difference. First operand has 82 places, 33 transitions, 189 flow. Second operand 12 states and 105 transitions. [2024-06-27 20:34:20,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 48 transitions, 313 flow [2024-06-27 20:34:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 48 transitions, 279 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-27 20:34:20,425 INFO L231 Difference]: Finished difference. Result has 76 places, 28 transitions, 149 flow [2024-06-27 20:34:20,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=149, PETRI_PLACES=76, PETRI_TRANSITIONS=28} [2024-06-27 20:34:20,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-27 20:34:20,425 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 28 transitions, 149 flow [2024-06-27 20:34:20,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:20,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:20,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:20,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 20:34:20,426 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:20,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036214, now seen corresponding path program 34 times [2024-06-27 20:34:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904368237] [2024-06-27 20:34:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904368237] [2024-06-27 20:34:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904368237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:21,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:21,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:34:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225724242] [2024-06-27 20:34:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:34:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:34:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:34:21,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:21,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 28 transitions, 149 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:21,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:21,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:21,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:21,584 INFO L124 PetriNetUnfolderBase]: 53/128 cut-off events. [2024-06-27 20:34:21,584 INFO L125 PetriNetUnfolderBase]: For 1936/1936 co-relation queries the response was YES. [2024-06-27 20:34:21,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 128 events. 53/128 cut-off events. For 1936/1936 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 329 event pairs, 4 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 436. Up to 38 conditions per place. [2024-06-27 20:34:21,584 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 8 changer transitions 14/42 dead transitions. [2024-06-27 20:34:21,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 42 transitions, 259 flow [2024-06-27 20:34:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 98 transitions. [2024-06-27 20:34:21,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26344086021505375 [2024-06-27 20:34:21,585 INFO L175 Difference]: Start difference. First operand has 76 places, 28 transitions, 149 flow. Second operand 12 states and 98 transitions. [2024-06-27 20:34:21,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 42 transitions, 259 flow [2024-06-27 20:34:21,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 42 transitions, 233 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:34:21,587 INFO L231 Difference]: Finished difference. Result has 67 places, 22 transitions, 114 flow [2024-06-27 20:34:21,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=114, PETRI_PLACES=67, PETRI_TRANSITIONS=22} [2024-06-27 20:34:21,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-27 20:34:21,587 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 22 transitions, 114 flow [2024-06-27 20:34:21,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:21,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:34:21,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:21,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 20:34:21,588 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:34:21,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:34:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash -558396292, now seen corresponding path program 35 times [2024-06-27 20:34:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:34:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032088219] [2024-06-27 20:34:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:34:21,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:34:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:34:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:34:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:34:22,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032088219] [2024-06-27 20:34:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032088219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:34:22,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:34:22,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 20:34:22,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104017571] [2024-06-27 20:34:22,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:34:22,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 20:34:22,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:34:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 20:34:22,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-27 20:34:22,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-27 20:34:22,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 22 transitions, 114 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:22,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:34:22,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-27 20:34:22,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:34:22,963 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2024-06-27 20:34:22,963 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-27 20:34:22,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 60 events. 21/60 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 165. Up to 24 conditions per place. [2024-06-27 20:34:22,964 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-27 20:34:22,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 30 transitions, 158 flow [2024-06-27 20:34:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:34:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:34:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 89 transitions. [2024-06-27 20:34:22,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.239247311827957 [2024-06-27 20:34:22,964 INFO L175 Difference]: Start difference. First operand has 67 places, 22 transitions, 114 flow. Second operand 12 states and 89 transitions. [2024-06-27 20:34:22,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 30 transitions, 158 flow [2024-06-27 20:34:22,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 30 transitions, 124 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-27 20:34:22,965 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2024-06-27 20:34:22,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2024-06-27 20:34:22,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-27 20:34:22,965 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2024-06-27 20:34:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:34:22,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:34:22,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:34:22,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:34:22,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:34:22,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 20:34:22,968 INFO L445 BasicCegarLoop]: Path program histogram: [35, 35, 20, 15, 10, 10, 9, 7, 6, 6, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:34:22,970 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:34:22,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:34:22,973 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:34:22,973 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:34:22,974 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:34:22 BasicIcfg [2024-06-27 20:34:22,974 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:34:22,974 INFO L158 Benchmark]: Toolchain (without parser) took 256612.72ms. Allocated memory was 159.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 127.3MB in the beginning and 936.2MB in the end (delta: -808.9MB). Peak memory consumption was 564.7MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 88.1MB in the end (delta: 122.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.66ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 94.3MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.62ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 91.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: Boogie Preprocessor took 68.04ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 88.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,975 INFO L158 Benchmark]: RCFGBuilder took 566.38ms. Allocated memory is still 159.4MB. Free memory was 88.0MB in the beginning and 117.3MB in the end (delta: -29.3MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,976 INFO L158 Benchmark]: TraceAbstraction took 255351.69ms. Allocated memory was 159.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 116.0MB in the beginning and 936.2MB in the end (delta: -820.2MB). Peak memory consumption was 553.2MB. Max. memory is 16.1GB. [2024-06-27 20:34:22,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 67.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 159.4MB. Free memory was 88.2MB in the beginning and 88.1MB in the end (delta: 122.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.66ms. Allocated memory is still 159.4MB. Free memory was 127.3MB in the beginning and 94.3MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.62ms. Allocated memory is still 159.4MB. Free memory was 94.3MB in the beginning and 91.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.04ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 88.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 566.38ms. Allocated memory is still 159.4MB. Free memory was 88.0MB in the beginning and 117.3MB in the end (delta: -29.3MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. * TraceAbstraction took 255351.69ms. Allocated memory was 159.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 116.0MB in the beginning and 936.2MB in the end (delta: -820.2MB). Peak memory consumption was 553.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 255.2s, OverallIterations: 188, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 126.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12263 SdHoareTripleChecker+Valid, 37.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10414 mSDsluCounter, 11226 SdHoareTripleChecker+Invalid, 32.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10281 mSDsCounter, 2948 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65639 IncrementalHoareTripleChecker+Invalid, 68587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2948 mSolverCounterUnsat, 945 mSDtfsCounter, 65639 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2130 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5314 ImplicationChecksByTransitivity, 55.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2319occurred in iteration=74, InterpolantAutomatonStates: 1884, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 126.0s InterpolantComputationTime, 3107 NumberOfCodeBlocks, 3107 NumberOfCodeBlocksAsserted, 188 NumberOfCheckSat, 2919 ConstructedInterpolants, 0 QuantifiedInterpolants, 137253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 188 InterpolantComputations, 188 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 20:34:23,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE