./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:38:05,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:38:06,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:38:06,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:38:06,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:38:06,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:38:06,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:38:06,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:38:06,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:38:06,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:38:06,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:38:06,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:38:06,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:38:06,113 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:38:06,113 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:38:06,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:38:06,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:38:06,114 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:38:06,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:38:06,114 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:38:06,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:38:06,115 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:38:06,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:38:06,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:38:06,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:38:06,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:38:06,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:38:06,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:38:06,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:38:06,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:38:06,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:38:06,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:38:06,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:06,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:38:06,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:38:06,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:38:06,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:38:06,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:38:06,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:38:06,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:38:06,121 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:38:06,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:38:06,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:38:06,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:38:06,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:38:06,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:38:06,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:38:06,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:38:06,406 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:38:06,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:07,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:38:07,876 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:38:07,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:07,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635f0d07b/eaca50f028c14db4a7e4b03294f0c75f/FLAG507148c28 [2024-06-28 03:38:07,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635f0d07b/eaca50f028c14db4a7e4b03294f0c75f [2024-06-28 03:38:07,911 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:38:07,912 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:38:07,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:38:08,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:38:08,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:38:08,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:08,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:38:08,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:38:08,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:07" (1/2) ... [2024-06-28 03:38:08,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f593650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:08, skipping insertion in model container [2024-06-28 03:38:08,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:38:07" (1/2) ... [2024-06-28 03:38:08,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@600f6be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:38:08, skipping insertion in model container [2024-06-28 03:38:08,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:08" (2/2) ... [2024-06-28 03:38:08,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f593650 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08, skipping insertion in model container [2024-06-28 03:38:08,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:08" (2/2) ... [2024-06-28 03:38:08,080 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:38:08,153 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:38:08,155 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:08,155 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff0_thd2 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:38:08,155 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:38:08,155 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 03:38:08,204 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:38:08,611 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:08,623 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:38:08,740 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:38:08,772 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:38:08,772 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08 WrapperNode [2024-06-28 03:38:08,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:38:08,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:08,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:38:08,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:38:08,780 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 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,798 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 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,835 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2024-06-28 03:38:08,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:38:08,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:38:08,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:38:08,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:38:08,847 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,847 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,868 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]. [2024-06-28 03:38:08,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:38:08,889 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:38:08,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:38:08,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:38:08,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (1/1) ... [2024-06-28 03:38:08,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:38:08,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:38:08,918 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) [2024-06-28 03:38:08,967 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 [2024-06-28 03:38:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:38:08,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:38:08,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:38:08,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:38:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:38:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:38:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:38:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:38:08,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:38:08,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:38:08,986 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:38:09,129 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:38:09,131 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:38:09,528 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:38:09,531 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:38:09,738 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:38:09,738 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:38:09,740 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:09 BoogieIcfgContainer [2024-06-28 03:38:09,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:38:09,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:38:09,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:38:09,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:38:09,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:38:07" (1/4) ... [2024-06-28 03:38:09,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c6eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:38:09, skipping insertion in model container [2024-06-28 03:38:09,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:38:08" (2/4) ... [2024-06-28 03:38:09,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c6eea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:09, skipping insertion in model container [2024-06-28 03:38:09,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:38:08" (3/4) ... [2024-06-28 03:38:09,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c6eea and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:38:09, skipping insertion in model container [2024-06-28 03:38:09,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:38:09" (4/4) ... [2024-06-28 03:38:09,754 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:38:09,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:38:09,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:38:09,771 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:38:09,814 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:38:09,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:09,884 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:38:09,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:09,886 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 39 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. [2024-06-28 03:38:09,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:38:09,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:38:09,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:38:09,912 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;@28b49be5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:38:09,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:38:09,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:38:09,919 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 03:38:09,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:38:09,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:09,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:38:09,921 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)] === [2024-06-28 03:38:09,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 401809168, now seen corresponding path program 1 times [2024-06-28 03:38:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:09,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389239278] [2024-06-28 03:38:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:09,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:10,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389239278] [2024-06-28 03:38:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389239278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:10,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:10,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:38:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262696896] [2024-06-28 03:38:10,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:10,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:38:10,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:38:10,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:38:10,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:10,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:10,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:10,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:10,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:11,051 INFO L124 PetriNetUnfolderBase]: 216/386 cut-off events. [2024-06-28 03:38:11,052 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:38:11,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 386 events. 216/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1364 event pairs, 133 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 776. Up to 378 conditions per place. [2024-06-28 03:38:11,059 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:38:11,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-28 03:38:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:38:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:38:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-28 03:38:11,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5268817204301075 [2024-06-28 03:38:11,073 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 49 transitions. [2024-06-28 03:38:11,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-28 03:38:11,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:11,078 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:38:11,080 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} [2024-06-28 03:38:11,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:38:11,084 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:38:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:11,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:11,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:38:11,085 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)] === [2024-06-28 03:38:11,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -408414353, now seen corresponding path program 1 times [2024-06-28 03:38:11,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:11,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052370839] [2024-06-28 03:38:11,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:11,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:11,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:11,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052370839] [2024-06-28 03:38:11,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052370839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:11,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:11,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:38:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61171495] [2024-06-28 03:38:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:38:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:38:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:38:11,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:11,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:11,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:11,777 INFO L124 PetriNetUnfolderBase]: 213/381 cut-off events. [2024-06-28 03:38:11,777 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-06-28 03:38:11,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 381 events. 213/381 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1357 event pairs, 109 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 865. Up to 364 conditions per place. [2024-06-28 03:38:11,783 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:38:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-28 03:38:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:38:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:38:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-28 03:38:11,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:38:11,787 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 62 transitions. [2024-06-28 03:38:11,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-28 03:38:11,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:38:11,792 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:38:11,792 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} [2024-06-28 03:38:11,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:38:11,793 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:38:11,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:11,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:11,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:38:11,795 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)] === [2024-06-28 03:38:11,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 224058001, now seen corresponding path program 1 times [2024-06-28 03:38:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726672544] [2024-06-28 03:38:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726672544] [2024-06-28 03:38:12,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726672544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:12,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:12,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:38:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659562175] [2024-06-28 03:38:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:38:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:12,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:38:12,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:38:12,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:12,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:12,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:12,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:12,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:12,428 INFO L124 PetriNetUnfolderBase]: 214/383 cut-off events. [2024-06-28 03:38:12,428 INFO L125 PetriNetUnfolderBase]: For 221/221 co-relation queries the response was YES. [2024-06-28 03:38:12,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 383 events. 214/383 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1367 event pairs, 78 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 960. Up to 338 conditions per place. [2024-06-28 03:38:12,431 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 35 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-28 03:38:12,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 253 flow [2024-06-28 03:38:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2024-06-28 03:38:12,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225806451612903 [2024-06-28 03:38:12,433 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 81 transitions. [2024-06-28 03:38:12,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 253 flow [2024-06-28 03:38:12,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:12,435 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-28 03:38:12,436 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-28 03:38:12,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 03:38:12,436 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-28 03:38:12,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:12,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:12,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:38:12,437 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)] === [2024-06-28 03:38:12,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1283962284, now seen corresponding path program 1 times [2024-06-28 03:38:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:12,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689032405] [2024-06-28 03:38:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:12,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:13,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689032405] [2024-06-28 03:38:13,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689032405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387138762] [2024-06-28 03:38:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:13,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:13,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:13,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:13,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:13,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:13,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:13,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:13,361 INFO L124 PetriNetUnfolderBase]: 224/400 cut-off events. [2024-06-28 03:38:13,361 INFO L125 PetriNetUnfolderBase]: For 487/487 co-relation queries the response was YES. [2024-06-28 03:38:13,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 400 events. 224/400 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1437 event pairs, 48 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 1185. Up to 312 conditions per place. [2024-06-28 03:38:13,365 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 43 selfloop transitions, 19 changer transitions 0/65 dead transitions. [2024-06-28 03:38:13,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 65 transitions, 392 flow [2024-06-28 03:38:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 03:38:13,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5376344086021505 [2024-06-28 03:38:13,367 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 100 transitions. [2024-06-28 03:38:13,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 65 transitions, 392 flow [2024-06-28 03:38:13,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 65 transitions, 388 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 03:38:13,370 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 277 flow [2024-06-28 03:38:13,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-06-28 03:38:13,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:38:13,372 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 277 flow [2024-06-28 03:38:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:13,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:38:13,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:38:13,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 571408976, now seen corresponding path program 1 times [2024-06-28 03:38:13,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:13,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367471062] [2024-06-28 03:38:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:14,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:14,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367471062] [2024-06-28 03:38:14,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367471062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:14,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:14,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:14,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184672647] [2024-06-28 03:38:14,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:14,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:14,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:14,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:38:14,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2024-06-28 03:38:14,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:14,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:38:14,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:14,378 INFO L124 PetriNetUnfolderBase]: 225/403 cut-off events. [2024-06-28 03:38:14,378 INFO L125 PetriNetUnfolderBase]: For 890/890 co-relation queries the response was YES. [2024-06-28 03:38:14,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 403 events. 225/403 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1447 event pairs, 30 based on Foata normal form. 6/407 useless extension candidates. Maximal degree in co-relation 1440. Up to 319 conditions per place. [2024-06-28 03:38:14,381 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 16 changer transitions 0/67 dead transitions. [2024-06-28 03:38:14,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 470 flow [2024-06-28 03:38:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:14,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:14,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 03:38:14,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792626728110599 [2024-06-28 03:38:14,383 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 277 flow. Second operand 7 states and 104 transitions. [2024-06-28 03:38:14,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 470 flow [2024-06-28 03:38:14,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 458 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:38:14,387 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 311 flow [2024-06-28 03:38:14,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 03:38:14,388 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-28 03:38:14,389 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 311 flow [2024-06-28 03:38:14,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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) [2024-06-28 03:38:14,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:14,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:38:14,390 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)] === [2024-06-28 03:38:14,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash 42354102, now seen corresponding path program 1 times [2024-06-28 03:38:14,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202007195] [2024-06-28 03:38:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:14,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202007195] [2024-06-28 03:38:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202007195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:14,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:14,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:38:14,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100752186] [2024-06-28 03:38:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:14,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:38:14,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:14,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:38:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:38:14,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:14,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:14,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:14,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:14,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:15,120 INFO L124 PetriNetUnfolderBase]: 223/400 cut-off events. [2024-06-28 03:38:15,120 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2024-06-28 03:38:15,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 400 events. 223/400 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1435 event pairs, 57 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1523. Up to 389 conditions per place. [2024-06-28 03:38:15,123 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 44 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-06-28 03:38:15,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 423 flow [2024-06-28 03:38:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:38:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:38:15,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-06-28 03:38:15,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:38:15,125 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 311 flow. Second operand 5 states and 55 transitions. [2024-06-28 03:38:15,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 423 flow [2024-06-28 03:38:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 386 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:15,129 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 291 flow [2024-06-28 03:38:15,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-28 03:38:15,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2024-06-28 03:38:15,130 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 291 flow [2024-06-28 03:38:15,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:15,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:15,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:38:15,131 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)] === [2024-06-28 03:38:15,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1300956534, now seen corresponding path program 1 times [2024-06-28 03:38:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723846724] [2024-06-28 03:38:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:15,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723846724] [2024-06-28 03:38:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723846724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:15,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:15,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934460362] [2024-06-28 03:38:15,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:15,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:15,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:15,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:15,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:15,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:15,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:15,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:15,932 INFO L124 PetriNetUnfolderBase]: 221/397 cut-off events. [2024-06-28 03:38:15,932 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-06-28 03:38:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 397 events. 221/397 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1430 event pairs, 56 based on Foata normal form. 1/396 useless extension candidates. Maximal degree in co-relation 1488. Up to 383 conditions per place. [2024-06-28 03:38:15,935 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-28 03:38:15,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 407 flow [2024-06-28 03:38:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:15,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-28 03:38:15,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:38:15,937 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 291 flow. Second operand 6 states and 63 transitions. [2024-06-28 03:38:15,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 407 flow [2024-06-28 03:38:15,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 392 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:15,940 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 297 flow [2024-06-28 03:38:15,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-06-28 03:38:15,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 03:38:15,941 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 297 flow [2024-06-28 03:38:15,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:15,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:15,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:38:15,942 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)] === [2024-06-28 03:38:15,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1669226547, now seen corresponding path program 1 times [2024-06-28 03:38:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644334203] [2024-06-28 03:38:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644334203] [2024-06-28 03:38:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644334203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:16,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318723438] [2024-06-28 03:38:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:16,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:16,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:16,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:16,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:16,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:16,688 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-28 03:38:16,688 INFO L125 PetriNetUnfolderBase]: For 1429/1429 co-relation queries the response was YES. [2024-06-28 03:38:16,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 399 events. 222/399 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1432 event pairs, 55 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1542. Up to 354 conditions per place. [2024-06-28 03:38:16,692 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-28 03:38:16,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 465 flow [2024-06-28 03:38:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:38:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:38:16,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 03:38:16,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:38:16,693 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 297 flow. Second operand 6 states and 71 transitions. [2024-06-28 03:38:16,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 465 flow [2024-06-28 03:38:16,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 439 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:16,697 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 322 flow [2024-06-28 03:38:16,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-28 03:38:16,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 03:38:16,698 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 322 flow [2024-06-28 03:38:16,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:16,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:16,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:16,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:38:16,699 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)] === [2024-06-28 03:38:16,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2047625877, now seen corresponding path program 2 times [2024-06-28 03:38:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:16,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944000392] [2024-06-28 03:38:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:16,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:17,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944000392] [2024-06-28 03:38:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944000392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:38:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959534189] [2024-06-28 03:38:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:17,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:38:17,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:38:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:38:17,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:17,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:17,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:17,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:17,520 INFO L124 PetriNetUnfolderBase]: 217/389 cut-off events. [2024-06-28 03:38:17,520 INFO L125 PetriNetUnfolderBase]: For 1640/1640 co-relation queries the response was YES. [2024-06-28 03:38:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1576 conditions, 389 events. 217/389 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1369 event pairs, 53 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1548. Up to 375 conditions per place. [2024-06-28 03:38:17,523 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-28 03:38:17,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 457 flow [2024-06-28 03:38:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-28 03:38:17,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31797235023041476 [2024-06-28 03:38:17,525 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 322 flow. Second operand 7 states and 69 transitions. [2024-06-28 03:38:17,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 457 flow [2024-06-28 03:38:17,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 441 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:17,529 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 351 flow [2024-06-28 03:38:17,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-28 03:38:17,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-28 03:38:17,531 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 351 flow [2024-06-28 03:38:17,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:17,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:17,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:38:17,532 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)] === [2024-06-28 03:38:17,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:17,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1674948403, now seen corresponding path program 1 times [2024-06-28 03:38:17,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796619428] [2024-06-28 03:38:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:18,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796619428] [2024-06-28 03:38:18,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796619428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:18,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:18,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:18,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191305184] [2024-06-28 03:38:18,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:18,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:18,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:18,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 351 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) [2024-06-28 03:38:18,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:18,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:18,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:18,676 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-28 03:38:18,676 INFO L125 PetriNetUnfolderBase]: For 1955/1955 co-relation queries the response was YES. [2024-06-28 03:38:18,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 386 events. 215/386 cut-off events. For 1955/1955 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1369 event pairs, 52 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1577. Up to 369 conditions per place. [2024-06-28 03:38:18,679 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-28 03:38:18,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 59 transitions, 487 flow [2024-06-28 03:38:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 03:38:18,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-28 03:38:18,681 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 351 flow. Second operand 7 states and 71 transitions. [2024-06-28 03:38:18,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 59 transitions, 487 flow [2024-06-28 03:38:18,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 449 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:18,686 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 352 flow [2024-06-28 03:38:18,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-28 03:38:18,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-28 03:38:18,688 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 352 flow [2024-06-28 03:38:18,688 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) [2024-06-28 03:38:18,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:18,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:38:18,689 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)] === [2024-06-28 03:38:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1000101619, now seen corresponding path program 1 times [2024-06-28 03:38:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722251542] [2024-06-28 03:38:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:19,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722251542] [2024-06-28 03:38:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722251542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:19,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:19,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528291395] [2024-06-28 03:38:19,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:19,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:19,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:19,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 352 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) [2024-06-28 03:38:19,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:19,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:19,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:19,505 INFO L124 PetriNetUnfolderBase]: 225/403 cut-off events. [2024-06-28 03:38:19,506 INFO L125 PetriNetUnfolderBase]: For 2379/2379 co-relation queries the response was YES. [2024-06-28 03:38:19,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 403 events. 225/403 cut-off events. For 2379/2379 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1446 event pairs, 50 based on Foata normal form. 3/404 useless extension candidates. Maximal degree in co-relation 1683. Up to 302 conditions per place. [2024-06-28 03:38:19,509 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 27 changer transitions 0/73 dead transitions. [2024-06-28 03:38:19,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 608 flow [2024-06-28 03:38:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-28 03:38:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-28 03:38:19,511 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 352 flow. Second operand 7 states and 87 transitions. [2024-06-28 03:38:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 608 flow [2024-06-28 03:38:19,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 585 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:19,516 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 455 flow [2024-06-28 03:38:19,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-28 03:38:19,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-28 03:38:19,517 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 455 flow [2024-06-28 03:38:19,517 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) [2024-06-28 03:38:19,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:19,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:19,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:38:19,518 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)] === [2024-06-28 03:38:19,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1377428659, now seen corresponding path program 2 times [2024-06-28 03:38:19,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123047489] [2024-06-28 03:38:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:20,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123047489] [2024-06-28 03:38:20,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123047489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:20,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857421620] [2024-06-28 03:38:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:20,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:20,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:20,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 455 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) [2024-06-28 03:38:20,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:20,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:20,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:20,378 INFO L124 PetriNetUnfolderBase]: 228/408 cut-off events. [2024-06-28 03:38:20,378 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-06-28 03:38:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 408 events. 228/408 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1455 event pairs, 49 based on Foata normal form. 1/407 useless extension candidates. Maximal degree in co-relation 1862. Up to 384 conditions per place. [2024-06-28 03:38:20,382 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 55 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2024-06-28 03:38:20,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 649 flow [2024-06-28 03:38:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:38:20,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-28 03:38:20,383 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 455 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:38:20,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 649 flow [2024-06-28 03:38:20,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 633 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:38:20,392 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 490 flow [2024-06-28 03:38:20,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=490, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-28 03:38:20,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-28 03:38:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 490 flow [2024-06-28 03:38:20,394 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) [2024-06-28 03:38:20,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:20,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:38:20,394 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)] === [2024-06-28 03:38:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 383554917, now seen corresponding path program 3 times [2024-06-28 03:38:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381594706] [2024-06-28 03:38:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:20,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381594706] [2024-06-28 03:38:20,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381594706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:20,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:20,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695995923] [2024-06-28 03:38:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:20,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:20,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 490 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) [2024-06-28 03:38:20,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:20,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:20,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:21,233 INFO L124 PetriNetUnfolderBase]: 226/405 cut-off events. [2024-06-28 03:38:21,234 INFO L125 PetriNetUnfolderBase]: For 3137/3137 co-relation queries the response was YES. [2024-06-28 03:38:21,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 405 events. 226/405 cut-off events. For 3137/3137 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1456 event pairs, 49 based on Foata normal form. 1/404 useless extension candidates. Maximal degree in co-relation 1894. Up to 388 conditions per place. [2024-06-28 03:38:21,237 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 57 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-28 03:38:21,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 640 flow [2024-06-28 03:38:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-28 03:38:21,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271889400921659 [2024-06-28 03:38:21,239 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 490 flow. Second operand 7 states and 71 transitions. [2024-06-28 03:38:21,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 640 flow [2024-06-28 03:38:21,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 611 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:21,244 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 488 flow [2024-06-28 03:38:21,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=488, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-28 03:38:21,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-28 03:38:21,245 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 488 flow [2024-06-28 03:38:21,246 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) [2024-06-28 03:38:21,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:21,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:21,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:38:21,246 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)] === [2024-06-28 03:38:21,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash 383794485, now seen corresponding path program 1 times [2024-06-28 03:38:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181197006] [2024-06-28 03:38:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:22,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:22,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181197006] [2024-06-28 03:38:22,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181197006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:22,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949632739] [2024-06-28 03:38:22,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:22,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:22,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:22,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:22,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:22,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:22,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 488 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) [2024-06-28 03:38:22,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:22,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:22,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:22,785 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-28 03:38:22,785 INFO L125 PetriNetUnfolderBase]: For 3512/3512 co-relation queries the response was YES. [2024-06-28 03:38:22,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 399 events. 222/399 cut-off events. For 3512/3512 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1418 event pairs, 47 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1881. Up to 376 conditions per place. [2024-06-28 03:38:22,789 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-28 03:38:22,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 660 flow [2024-06-28 03:38:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:22,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:22,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:38:22,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:38:22,790 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 488 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:38:22,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 660 flow [2024-06-28 03:38:22,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 623 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:22,796 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 496 flow [2024-06-28 03:38:22,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=496, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-28 03:38:22,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 03:38:22,797 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 496 flow [2024-06-28 03:38:22,797 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) [2024-06-28 03:38:22,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:22,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:38:22,798 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)] === [2024-06-28 03:38:22,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash 934565398, now seen corresponding path program 1 times [2024-06-28 03:38:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:22,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591267171] [2024-06-28 03:38:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:23,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:23,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591267171] [2024-06-28 03:38:23,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591267171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:23,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93221500] [2024-06-28 03:38:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:23,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:23,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:23,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 496 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:23,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:23,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:23,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:23,754 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2024-06-28 03:38:23,755 INFO L125 PetriNetUnfolderBase]: For 3847/3847 co-relation queries the response was YES. [2024-06-28 03:38:23,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 404 events. 225/404 cut-off events. For 3847/3847 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1448 event pairs, 48 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1954. Up to 309 conditions per place. [2024-06-28 03:38:23,759 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 55 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2024-06-28 03:38:23,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 769 flow [2024-06-28 03:38:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 03:38:23,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-28 03:38:23,760 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 496 flow. Second operand 7 states and 86 transitions. [2024-06-28 03:38:23,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 769 flow [2024-06-28 03:38:23,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 740 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:23,768 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 541 flow [2024-06-28 03:38:23,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-06-28 03:38:23,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-28 03:38:23,768 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 541 flow [2024-06-28 03:38:23,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:23,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:23,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:23,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:38:23,769 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)] === [2024-06-28 03:38:23,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash 934655608, now seen corresponding path program 2 times [2024-06-28 03:38:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:23,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716952784] [2024-06-28 03:38:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716952784] [2024-06-28 03:38:24,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716952784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:24,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:24,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:24,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518304181] [2024-06-28 03:38:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:24,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:24,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:24,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:24,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:24,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:24,795 INFO L124 PetriNetUnfolderBase]: 222/399 cut-off events. [2024-06-28 03:38:24,795 INFO L125 PetriNetUnfolderBase]: For 4286/4286 co-relation queries the response was YES. [2024-06-28 03:38:24,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 399 events. 222/399 cut-off events. For 4286/4286 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1420 event pairs, 47 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 1987. Up to 353 conditions per place. [2024-06-28 03:38:24,799 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-28 03:38:24,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 726 flow [2024-06-28 03:38:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:38:24,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 03:38:24,800 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 541 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:38:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 726 flow [2024-06-28 03:38:24,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 680 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:24,808 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 543 flow [2024-06-28 03:38:24,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-28 03:38:24,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-28 03:38:24,809 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 543 flow [2024-06-28 03:38:24,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:24,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:24,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:24,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:38:24,810 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)] === [2024-06-28 03:38:24,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash 938374833, now seen corresponding path program 1 times [2024-06-28 03:38:24,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969707374] [2024-06-28 03:38:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969707374] [2024-06-28 03:38:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969707374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:25,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:25,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:25,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568001884] [2024-06-28 03:38:25,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:25,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:25,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:25,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:25,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:25,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:25,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:25,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:25,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:25,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:25,535 INFO L124 PetriNetUnfolderBase]: 223/401 cut-off events. [2024-06-28 03:38:25,536 INFO L125 PetriNetUnfolderBase]: For 4788/4788 co-relation queries the response was YES. [2024-06-28 03:38:25,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 401 events. 223/401 cut-off events. For 4788/4788 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1425 event pairs, 48 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1997. Up to 296 conditions per place. [2024-06-28 03:38:25,539 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 34 changer transitions 0/85 dead transitions. [2024-06-28 03:38:25,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 825 flow [2024-06-28 03:38:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-28 03:38:25,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-28 03:38:25,542 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 543 flow. Second operand 7 states and 89 transitions. [2024-06-28 03:38:25,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 825 flow [2024-06-28 03:38:25,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 790 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:25,550 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 600 flow [2024-06-28 03:38:25,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-06-28 03:38:25,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-28 03:38:25,550 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 600 flow [2024-06-28 03:38:25,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:25,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:25,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:38:25,551 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)] === [2024-06-28 03:38:25,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash 938380413, now seen corresponding path program 2 times [2024-06-28 03:38:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:25,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215330335] [2024-06-28 03:38:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:26,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:26,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215330335] [2024-06-28 03:38:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215330335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:26,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123767929] [2024-06-28 03:38:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:26,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:26,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 600 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:26,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:26,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:26,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:26,242 INFO L124 PetriNetUnfolderBase]: 226/406 cut-off events. [2024-06-28 03:38:26,243 INFO L125 PetriNetUnfolderBase]: For 5283/5283 co-relation queries the response was YES. [2024-06-28 03:38:26,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 406 events. 226/406 cut-off events. For 5283/5283 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1446 event pairs, 48 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2105. Up to 298 conditions per place. [2024-06-28 03:38:26,246 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 46 selfloop transitions, 35 changer transitions 0/83 dead transitions. [2024-06-28 03:38:26,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 840 flow [2024-06-28 03:38:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 03:38:26,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 03:38:26,248 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 600 flow. Second operand 7 states and 83 transitions. [2024-06-28 03:38:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 840 flow [2024-06-28 03:38:26,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 769 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:26,258 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 625 flow [2024-06-28 03:38:26,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=625, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-28 03:38:26,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-28 03:38:26,258 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 625 flow [2024-06-28 03:38:26,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:26,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:26,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:38:26,259 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)] === [2024-06-28 03:38:26,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2103957714, now seen corresponding path program 1 times [2024-06-28 03:38:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774006736] [2024-06-28 03:38:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:27,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:27,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774006736] [2024-06-28 03:38:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774006736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:27,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265126763] [2024-06-28 03:38:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:27,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:27,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:27,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 625 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) [2024-06-28 03:38:27,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:27,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:27,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:27,403 INFO L124 PetriNetUnfolderBase]: 240/429 cut-off events. [2024-06-28 03:38:27,403 INFO L125 PetriNetUnfolderBase]: For 6333/6333 co-relation queries the response was YES. [2024-06-28 03:38:27,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 429 events. 240/429 cut-off events. For 6333/6333 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1571 event pairs, 46 based on Foata normal form. 3/430 useless extension candidates. Maximal degree in co-relation 2239. Up to 270 conditions per place. [2024-06-28 03:38:27,406 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 59 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-28 03:38:27,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 95 transitions, 967 flow [2024-06-28 03:38:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:27,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 03:38:27,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:38:27,408 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 625 flow. Second operand 8 states and 100 transitions. [2024-06-28 03:38:27,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 95 transitions, 967 flow [2024-06-28 03:38:27,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 95 transitions, 919 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:27,418 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 703 flow [2024-06-28 03:38:27,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=703, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2024-06-28 03:38:27,419 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-28 03:38:27,419 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 703 flow [2024-06-28 03:38:27,419 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) [2024-06-28 03:38:27,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:27,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:27,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:38:27,420 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)] === [2024-06-28 03:38:27,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash 673493684, now seen corresponding path program 2 times [2024-06-28 03:38:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408373010] [2024-06-28 03:38:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:27,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408373010] [2024-06-28 03:38:28,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408373010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:28,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:28,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397311234] [2024-06-28 03:38:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:28,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:28,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:28,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 703 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) [2024-06-28 03:38:28,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:28,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:28,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:28,465 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-28 03:38:28,466 INFO L125 PetriNetUnfolderBase]: For 6778/6778 co-relation queries the response was YES. [2024-06-28 03:38:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 434 events. 243/434 cut-off events. For 6778/6778 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1575 event pairs, 43 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2377. Up to 399 conditions per place. [2024-06-28 03:38:28,470 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 03:38:28,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 969 flow [2024-06-28 03:38:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:38:28,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:38:28,471 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 703 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:38:28,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 969 flow [2024-06-28 03:38:28,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 938 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:28,484 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 745 flow [2024-06-28 03:38:28,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=745, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-06-28 03:38:28,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-28 03:38:28,484 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 745 flow [2024-06-28 03:38:28,485 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) [2024-06-28 03:38:28,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:28,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:28,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:38:28,485 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)] === [2024-06-28 03:38:28,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:28,486 INFO L85 PathProgramCache]: Analyzing trace with hash -987281198, now seen corresponding path program 3 times [2024-06-28 03:38:28,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:28,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285728052] [2024-06-28 03:38:28,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:28,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285728052] [2024-06-28 03:38:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285728052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:29,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:29,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851343719] [2024-06-28 03:38:29,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:29,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:29,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:29,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:29,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 745 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) [2024-06-28 03:38:29,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:29,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:29,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:29,567 INFO L124 PetriNetUnfolderBase]: 246/439 cut-off events. [2024-06-28 03:38:29,567 INFO L125 PetriNetUnfolderBase]: For 7580/7580 co-relation queries the response was YES. [2024-06-28 03:38:29,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2509 conditions, 439 events. 246/439 cut-off events. For 7580/7580 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1602 event pairs, 43 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2466. Up to 419 conditions per place. [2024-06-28 03:38:29,571 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 78 selfloop transitions, 14 changer transitions 0/94 dead transitions. [2024-06-28 03:38:29,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 963 flow [2024-06-28 03:38:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 03:38:29,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3046594982078853 [2024-06-28 03:38:29,573 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 745 flow. Second operand 9 states and 85 transitions. [2024-06-28 03:38:29,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 963 flow [2024-06-28 03:38:29,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 941 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:29,588 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 778 flow [2024-06-28 03:38:29,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-06-28 03:38:29,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 03:38:29,589 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 778 flow [2024-06-28 03:38:29,589 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) [2024-06-28 03:38:29,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:29,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:29,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:38:29,589 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)] === [2024-06-28 03:38:29,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:29,590 INFO L85 PathProgramCache]: Analyzing trace with hash -987548325, now seen corresponding path program 3 times [2024-06-28 03:38:29,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261430885] [2024-06-28 03:38:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:30,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261430885] [2024-06-28 03:38:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261430885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:30,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093805193] [2024-06-28 03:38:30,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:30,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:30,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:30,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:30,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 778 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:30,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:30,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:30,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:30,306 INFO L124 PetriNetUnfolderBase]: 243/434 cut-off events. [2024-06-28 03:38:30,307 INFO L125 PetriNetUnfolderBase]: For 8072/8072 co-relation queries the response was YES. [2024-06-28 03:38:30,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 434 events. 243/434 cut-off events. For 8072/8072 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1580 event pairs, 44 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2476. Up to 414 conditions per place. [2024-06-28 03:38:30,310 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 79 selfloop transitions, 12 changer transitions 0/93 dead transitions. [2024-06-28 03:38:30,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 974 flow [2024-06-28 03:38:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:38:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:38:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 03:38:30,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3317972350230415 [2024-06-28 03:38:30,311 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 778 flow. Second operand 7 states and 72 transitions. [2024-06-28 03:38:30,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 974 flow [2024-06-28 03:38:30,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 941 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:30,322 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 774 flow [2024-06-28 03:38:30,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=774, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-06-28 03:38:30,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 03:38:30,323 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 774 flow [2024-06-28 03:38:30,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 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) [2024-06-28 03:38:30,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:30,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:30,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:38:30,324 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)] === [2024-06-28 03:38:30,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:30,324 INFO L85 PathProgramCache]: Analyzing trace with hash 680845334, now seen corresponding path program 4 times [2024-06-28 03:38:30,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:30,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825392058] [2024-06-28 03:38:30,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:30,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:31,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825392058] [2024-06-28 03:38:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825392058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:31,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:31,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:31,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291037440] [2024-06-28 03:38:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:31,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:31,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:31,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 774 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) [2024-06-28 03:38:31,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:31,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:31,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:31,432 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-28 03:38:31,433 INFO L125 PetriNetUnfolderBase]: For 8536/8536 co-relation queries the response was YES. [2024-06-28 03:38:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 431 events. 241/431 cut-off events. For 8536/8536 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1576 event pairs, 43 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2467. Up to 408 conditions per place. [2024-06-28 03:38:31,437 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 77 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-06-28 03:38:31,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 94 transitions, 974 flow [2024-06-28 03:38:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:38:31,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:38:31,438 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 774 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:38:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 94 transitions, 974 flow [2024-06-28 03:38:31,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 94 transitions, 903 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:31,453 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 738 flow [2024-06-28 03:38:31,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-06-28 03:38:31,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 03:38:31,454 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 738 flow [2024-06-28 03:38:31,454 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) [2024-06-28 03:38:31,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:31,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:38:31,455 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)] === [2024-06-28 03:38:31,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1093302826, now seen corresponding path program 1 times [2024-06-28 03:38:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451180713] [2024-06-28 03:38:31,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:32,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:32,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451180713] [2024-06-28 03:38:32,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451180713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:32,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:32,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337885227] [2024-06-28 03:38:32,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:32,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 738 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:32,434 INFO L124 PetriNetUnfolderBase]: 245/439 cut-off events. [2024-06-28 03:38:32,434 INFO L125 PetriNetUnfolderBase]: For 9469/9469 co-relation queries the response was YES. [2024-06-28 03:38:32,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2546 conditions, 439 events. 245/439 cut-off events. For 9469/9469 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1622 event pairs, 22 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2499. Up to 335 conditions per place. [2024-06-28 03:38:32,438 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 81 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-28 03:38:32,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 104 transitions, 1040 flow [2024-06-28 03:38:32,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:32,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:38:32,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:38:32,440 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 738 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:38:32,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 104 transitions, 1040 flow [2024-06-28 03:38:32,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 997 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:32,456 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 751 flow [2024-06-28 03:38:32,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-06-28 03:38:32,457 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-28 03:38:32,457 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 751 flow [2024-06-28 03:38:32,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:32,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:32,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:38:32,458 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)] === [2024-06-28 03:38:32,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:32,459 INFO L85 PathProgramCache]: Analyzing trace with hash -979738666, now seen corresponding path program 2 times [2024-06-28 03:38:32,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:32,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031267805] [2024-06-28 03:38:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:32,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:33,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:33,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031267805] [2024-06-28 03:38:33,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031267805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:33,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:33,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395964792] [2024-06-28 03:38:33,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:33,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:33,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:33,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 751 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:33,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:33,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:33,721 INFO L124 PetriNetUnfolderBase]: 279/501 cut-off events. [2024-06-28 03:38:33,721 INFO L125 PetriNetUnfolderBase]: For 10663/10663 co-relation queries the response was YES. [2024-06-28 03:38:33,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 501 events. 279/501 cut-off events. For 10663/10663 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1946 event pairs, 56 based on Foata normal form. 2/501 useless extension candidates. Maximal degree in co-relation 2913. Up to 441 conditions per place. [2024-06-28 03:38:33,733 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 23 changer transitions 0/115 dead transitions. [2024-06-28 03:38:33,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 115 transitions, 1196 flow [2024-06-28 03:38:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:38:33,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:38:33,735 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 751 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:38:33,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 115 transitions, 1196 flow [2024-06-28 03:38:33,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 1107 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:33,753 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 948 flow [2024-06-28 03:38:33,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=948, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2024-06-28 03:38:33,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 03:38:33,754 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 948 flow [2024-06-28 03:38:33,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:33,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:33,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:38:33,755 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)] === [2024-06-28 03:38:33,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:33,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1090441092, now seen corresponding path program 1 times [2024-06-28 03:38:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19167217] [2024-06-28 03:38:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:34,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19167217] [2024-06-28 03:38:34,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19167217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:34,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:34,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255224286] [2024-06-28 03:38:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:34,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:34,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:34,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:34,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:34,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:34,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:34,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:34,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:34,812 INFO L124 PetriNetUnfolderBase]: 277/497 cut-off events. [2024-06-28 03:38:34,812 INFO L125 PetriNetUnfolderBase]: For 10841/10841 co-relation queries the response was YES. [2024-06-28 03:38:34,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 497 events. 277/497 cut-off events. For 10841/10841 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1924 event pairs, 47 based on Foata normal form. 1/496 useless extension candidates. Maximal degree in co-relation 2908. Up to 401 conditions per place. [2024-06-28 03:38:34,822 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 32 changer transitions 0/113 dead transitions. [2024-06-28 03:38:34,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 1196 flow [2024-06-28 03:38:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:34,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 03:38:34,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 03:38:34,825 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 948 flow. Second operand 8 states and 89 transitions. [2024-06-28 03:38:34,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 1196 flow [2024-06-28 03:38:34,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1157 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:34,848 INFO L231 Difference]: Finished difference. Result has 110 places, 103 transitions, 978 flow [2024-06-28 03:38:34,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=978, PETRI_PLACES=110, PETRI_TRANSITIONS=103} [2024-06-28 03:38:34,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-28 03:38:34,849 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 103 transitions, 978 flow [2024-06-28 03:38:34,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:34,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:34,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:34,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:38:34,850 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)] === [2024-06-28 03:38:34,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:34,851 INFO L85 PathProgramCache]: Analyzing trace with hash 122689350, now seen corresponding path program 1 times [2024-06-28 03:38:34,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2605728] [2024-06-28 03:38:34,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:34,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:35,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:35,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2605728] [2024-06-28 03:38:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2605728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115340856] [2024-06-28 03:38:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:35,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:35,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 103 transitions, 978 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:35,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:35,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:35,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:35,838 INFO L124 PetriNetUnfolderBase]: 283/506 cut-off events. [2024-06-28 03:38:35,838 INFO L125 PetriNetUnfolderBase]: For 12058/12060 co-relation queries the response was YES. [2024-06-28 03:38:35,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3026 conditions, 506 events. 283/506 cut-off events. For 12058/12060 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1974 event pairs, 48 based on Foata normal form. 4/508 useless extension candidates. Maximal degree in co-relation 2974. Up to 302 conditions per place. [2024-06-28 03:38:35,843 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 52 changer transitions 0/122 dead transitions. [2024-06-28 03:38:35,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 122 transitions, 1390 flow [2024-06-28 03:38:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-28 03:38:35,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-28 03:38:35,844 INFO L175 Difference]: Start difference. First operand has 110 places, 103 transitions, 978 flow. Second operand 8 states and 101 transitions. [2024-06-28 03:38:35,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 122 transitions, 1390 flow [2024-06-28 03:38:35,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 122 transitions, 1268 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:35,869 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 991 flow [2024-06-28 03:38:35,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=991, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2024-06-28 03:38:35,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-28 03:38:35,870 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 991 flow [2024-06-28 03:38:35,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:35,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:35,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:35,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:38:35,871 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)] === [2024-06-28 03:38:35,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -974976756, now seen corresponding path program 2 times [2024-06-28 03:38:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727231207] [2024-06-28 03:38:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:36,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727231207] [2024-06-28 03:38:36,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727231207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:36,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988591923] [2024-06-28 03:38:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:36,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:36,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:36,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:36,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 991 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:36,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:36,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:36,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:36,876 INFO L124 PetriNetUnfolderBase]: 291/521 cut-off events. [2024-06-28 03:38:36,876 INFO L125 PetriNetUnfolderBase]: For 13060/13060 co-relation queries the response was YES. [2024-06-28 03:38:36,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 521 events. 291/521 cut-off events. For 13060/13060 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2052 event pairs, 56 based on Foata normal form. 1/520 useless extension candidates. Maximal degree in co-relation 3126. Up to 307 conditions per place. [2024-06-28 03:38:36,880 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 54 changer transitions 0/123 dead transitions. [2024-06-28 03:38:36,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 1415 flow [2024-06-28 03:38:36,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:38:36,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:38:36,885 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 991 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:38:36,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 1415 flow [2024-06-28 03:38:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 123 transitions, 1294 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:36,912 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 1031 flow [2024-06-28 03:38:36,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1031, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-06-28 03:38:36,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-28 03:38:36,913 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 1031 flow [2024-06-28 03:38:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:36,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:36,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:38:36,913 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)] === [2024-06-28 03:38:36,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash -974969998, now seen corresponding path program 1 times [2024-06-28 03:38:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821526767] [2024-06-28 03:38:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821526767] [2024-06-28 03:38:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821526767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:37,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:37,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079927983] [2024-06-28 03:38:37,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:38,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:38,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 1031 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) [2024-06-28 03:38:38,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:38,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:38,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:38,328 INFO L124 PetriNetUnfolderBase]: 303/540 cut-off events. [2024-06-28 03:38:38,329 INFO L125 PetriNetUnfolderBase]: For 15157/15157 co-relation queries the response was YES. [2024-06-28 03:38:38,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 540 events. 303/540 cut-off events. For 15157/15157 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2140 event pairs, 49 based on Foata normal form. 4/542 useless extension candidates. Maximal degree in co-relation 3270. Up to 347 conditions per place. [2024-06-28 03:38:38,333 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 94 selfloop transitions, 38 changer transitions 0/134 dead transitions. [2024-06-28 03:38:38,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 134 transitions, 1461 flow [2024-06-28 03:38:38,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:38:38,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:38:38,335 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 1031 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:38:38,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 134 transitions, 1461 flow [2024-06-28 03:38:38,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 134 transitions, 1388 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:38,360 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 1104 flow [2024-06-28 03:38:38,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1104, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-06-28 03:38:38,361 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 03:38:38,361 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 1104 flow [2024-06-28 03:38:38,361 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) [2024-06-28 03:38:38,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:38,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:38,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:38:38,362 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)] === [2024-06-28 03:38:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash -974970246, now seen corresponding path program 3 times [2024-06-28 03:38:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505346072] [2024-06-28 03:38:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:38,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:39,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:39,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505346072] [2024-06-28 03:38:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505346072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:39,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:39,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804142207] [2024-06-28 03:38:39,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:39,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:39,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:39,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:39,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 1104 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:39,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:39,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:39,354 INFO L124 PetriNetUnfolderBase]: 301/537 cut-off events. [2024-06-28 03:38:39,354 INFO L125 PetriNetUnfolderBase]: For 14680/14680 co-relation queries the response was YES. [2024-06-28 03:38:39,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 537 events. 301/537 cut-off events. For 14680/14680 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2128 event pairs, 48 based on Foata normal form. 1/536 useless extension candidates. Maximal degree in co-relation 3312. Up to 407 conditions per place. [2024-06-28 03:38:39,358 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 88 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2024-06-28 03:38:39,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 130 transitions, 1472 flow [2024-06-28 03:38:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:38:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:38:39,359 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 1104 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:38:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 130 transitions, 1472 flow [2024-06-28 03:38:39,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 130 transitions, 1419 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:39,381 INFO L231 Difference]: Finished difference. Result has 125 places, 119 transitions, 1201 flow [2024-06-28 03:38:39,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1201, PETRI_PLACES=125, PETRI_TRANSITIONS=119} [2024-06-28 03:38:39,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 03:38:39,382 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 119 transitions, 1201 flow [2024-06-28 03:38:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:39,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:39,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:39,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:38:39,383 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)] === [2024-06-28 03:38:39,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash -596530732, now seen corresponding path program 2 times [2024-06-28 03:38:39,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:39,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971093702] [2024-06-28 03:38:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:39,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971093702] [2024-06-28 03:38:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971093702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:40,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550128163] [2024-06-28 03:38:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:40,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:40,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 119 transitions, 1201 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) [2024-06-28 03:38:40,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:40,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:40,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:40,723 INFO L124 PetriNetUnfolderBase]: 307/548 cut-off events. [2024-06-28 03:38:40,723 INFO L125 PetriNetUnfolderBase]: For 16357/16357 co-relation queries the response was YES. [2024-06-28 03:38:40,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3553 conditions, 548 events. 307/548 cut-off events. For 16357/16357 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2189 event pairs, 55 based on Foata normal form. 2/548 useless extension candidates. Maximal degree in co-relation 3492. Up to 483 conditions per place. [2024-06-28 03:38:40,728 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-06-28 03:38:40,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 135 transitions, 1589 flow [2024-06-28 03:38:40,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:38:40,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:38:40,730 INFO L175 Difference]: Start difference. First operand has 125 places, 119 transitions, 1201 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:38:40,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 135 transitions, 1589 flow [2024-06-28 03:38:40,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 135 transitions, 1545 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:40,768 INFO L231 Difference]: Finished difference. Result has 130 places, 123 transitions, 1248 flow [2024-06-28 03:38:40,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1248, PETRI_PLACES=130, PETRI_TRANSITIONS=123} [2024-06-28 03:38:40,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:38:40,768 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 123 transitions, 1248 flow [2024-06-28 03:38:40,769 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) [2024-06-28 03:38:40,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:40,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:40,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:38:40,769 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)] === [2024-06-28 03:38:40,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash 541979150, now seen corresponding path program 3 times [2024-06-28 03:38:40,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:40,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539061382] [2024-06-28 03:38:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:40,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:41,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:41,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:41,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539061382] [2024-06-28 03:38:41,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539061382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:41,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:41,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:41,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016717609] [2024-06-28 03:38:41,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:41,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:41,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:41,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:41,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:41,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:41,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 123 transitions, 1248 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) [2024-06-28 03:38:41,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:41,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:41,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:42,200 INFO L124 PetriNetUnfolderBase]: 313/558 cut-off events. [2024-06-28 03:38:42,200 INFO L125 PetriNetUnfolderBase]: For 17512/17512 co-relation queries the response was YES. [2024-06-28 03:38:42,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3633 conditions, 558 events. 313/558 cut-off events. For 17512/17512 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2242 event pairs, 55 based on Foata normal form. 2/558 useless extension candidates. Maximal degree in co-relation 3571. Up to 520 conditions per place. [2024-06-28 03:38:42,204 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2024-06-28 03:38:42,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 135 transitions, 1558 flow [2024-06-28 03:38:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:38:42,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:38:42,213 INFO L175 Difference]: Start difference. First operand has 130 places, 123 transitions, 1248 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:38:42,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 135 transitions, 1558 flow [2024-06-28 03:38:42,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1526 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:42,254 INFO L231 Difference]: Finished difference. Result has 134 places, 125 transitions, 1283 flow [2024-06-28 03:38:42,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1283, PETRI_PLACES=134, PETRI_TRANSITIONS=125} [2024-06-28 03:38:42,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 03:38:42,256 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 125 transitions, 1283 flow [2024-06-28 03:38:42,256 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) [2024-06-28 03:38:42,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:42,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:42,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:38:42,257 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)] === [2024-06-28 03:38:42,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:42,257 INFO L85 PathProgramCache]: Analyzing trace with hash -549218980, now seen corresponding path program 4 times [2024-06-28 03:38:42,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476099036] [2024-06-28 03:38:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:43,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:43,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476099036] [2024-06-28 03:38:43,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476099036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:43,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:43,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261790779] [2024-06-28 03:38:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:43,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:43,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:43,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 125 transitions, 1283 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:43,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:43,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:43,325 INFO L124 PetriNetUnfolderBase]: 321/571 cut-off events. [2024-06-28 03:38:43,326 INFO L125 PetriNetUnfolderBase]: For 18523/18523 co-relation queries the response was YES. [2024-06-28 03:38:43,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 571 events. 321/571 cut-off events. For 18523/18523 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2330 event pairs, 57 based on Foata normal form. 1/570 useless extension candidates. Maximal degree in co-relation 3723. Up to 535 conditions per place. [2024-06-28 03:38:43,329 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 19 changer transitions 0/137 dead transitions. [2024-06-28 03:38:43,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 1681 flow [2024-06-28 03:38:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:43,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:38:43,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:38:43,330 INFO L175 Difference]: Start difference. First operand has 134 places, 125 transitions, 1283 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:38:43,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 1681 flow [2024-06-28 03:38:43,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 1636 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:43,358 INFO L231 Difference]: Finished difference. Result has 135 places, 129 transitions, 1331 flow [2024-06-28 03:38:43,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1331, PETRI_PLACES=135, PETRI_TRANSITIONS=129} [2024-06-28 03:38:43,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:38:43,359 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 129 transitions, 1331 flow [2024-06-28 03:38:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:43,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:38:43,360 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)] === [2024-06-28 03:38:43,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash 865311930, now seen corresponding path program 5 times [2024-06-28 03:38:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343368532] [2024-06-28 03:38:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:43,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:43,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:43,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343368532] [2024-06-28 03:38:43,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343368532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:43,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:43,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:43,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181118672] [2024-06-28 03:38:43,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:43,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:43,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:43,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:43,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:44,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:44,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 129 transitions, 1331 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:44,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:44,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:44,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:44,270 INFO L124 PetriNetUnfolderBase]: 319/568 cut-off events. [2024-06-28 03:38:44,270 INFO L125 PetriNetUnfolderBase]: For 19000/19000 co-relation queries the response was YES. [2024-06-28 03:38:44,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 568 events. 319/568 cut-off events. For 19000/19000 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2297 event pairs, 57 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 3695. Up to 533 conditions per place. [2024-06-28 03:38:44,274 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 115 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2024-06-28 03:38:44,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 136 transitions, 1615 flow [2024-06-28 03:38:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 03:38:44,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346774193548387 [2024-06-28 03:38:44,276 INFO L175 Difference]: Start difference. First operand has 135 places, 129 transitions, 1331 flow. Second operand 8 states and 83 transitions. [2024-06-28 03:38:44,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 136 transitions, 1615 flow [2024-06-28 03:38:44,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 136 transitions, 1578 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:44,317 INFO L231 Difference]: Finished difference. Result has 139 places, 129 transitions, 1337 flow [2024-06-28 03:38:44,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1337, PETRI_PLACES=139, PETRI_TRANSITIONS=129} [2024-06-28 03:38:44,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-28 03:38:44,318 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 129 transitions, 1337 flow [2024-06-28 03:38:44,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:44,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:44,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:44,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:38:44,318 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)] === [2024-06-28 03:38:44,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash -360355372, now seen corresponding path program 4 times [2024-06-28 03:38:44,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:44,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942954636] [2024-06-28 03:38:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:45,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:45,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942954636] [2024-06-28 03:38:45,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942954636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887435210] [2024-06-28 03:38:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:45,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:45,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 129 transitions, 1337 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) [2024-06-28 03:38:45,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:45,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:45,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:45,655 INFO L124 PetriNetUnfolderBase]: 325/578 cut-off events. [2024-06-28 03:38:45,656 INFO L125 PetriNetUnfolderBase]: For 20683/20683 co-relation queries the response was YES. [2024-06-28 03:38:45,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3862 conditions, 578 events. 325/578 cut-off events. For 20683/20683 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2333 event pairs, 54 based on Foata normal form. 2/578 useless extension candidates. Maximal degree in co-relation 3795. Up to 532 conditions per place. [2024-06-28 03:38:45,659 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 18 changer transitions 0/143 dead transitions. [2024-06-28 03:38:45,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 1739 flow [2024-06-28 03:38:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:38:45,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:38:45,665 INFO L175 Difference]: Start difference. First operand has 139 places, 129 transitions, 1337 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:38:45,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 1739 flow [2024-06-28 03:38:45,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 1698 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:45,714 INFO L231 Difference]: Finished difference. Result has 141 places, 131 transitions, 1363 flow [2024-06-28 03:38:45,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=141, PETRI_TRANSITIONS=131} [2024-06-28 03:38:45,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-28 03:38:45,715 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 131 transitions, 1363 flow [2024-06-28 03:38:45,715 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) [2024-06-28 03:38:45,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:45,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:45,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:38:45,716 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)] === [2024-06-28 03:38:45,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:45,716 INFO L85 PathProgramCache]: Analyzing trace with hash -540647852, now seen corresponding path program 5 times [2024-06-28 03:38:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:45,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862742446] [2024-06-28 03:38:45,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:45,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:46,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862742446] [2024-06-28 03:38:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862742446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:46,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:46,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302788165] [2024-06-28 03:38:46,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:46,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:46,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:46,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 131 transitions, 1363 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) [2024-06-28 03:38:46,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:46,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:46,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:46,878 INFO L124 PetriNetUnfolderBase]: 326/580 cut-off events. [2024-06-28 03:38:46,879 INFO L125 PetriNetUnfolderBase]: For 21333/21333 co-relation queries the response was YES. [2024-06-28 03:38:46,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3892 conditions, 580 events. 326/580 cut-off events. For 21333/21333 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2349 event pairs, 54 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 3824. Up to 548 conditions per place. [2024-06-28 03:38:46,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 17 changer transitions 0/144 dead transitions. [2024-06-28 03:38:46,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1707 flow [2024-06-28 03:38:46,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:38:46,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-28 03:38:46,885 INFO L175 Difference]: Start difference. First operand has 141 places, 131 transitions, 1363 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:38:46,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1707 flow [2024-06-28 03:38:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 144 transitions, 1639 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:46,940 INFO L231 Difference]: Finished difference. Result has 144 places, 135 transitions, 1383 flow [2024-06-28 03:38:46,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1383, PETRI_PLACES=144, PETRI_TRANSITIONS=135} [2024-06-28 03:38:46,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-28 03:38:46,941 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 135 transitions, 1383 flow [2024-06-28 03:38:46,941 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) [2024-06-28 03:38:46,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:46,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:46,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:38:46,941 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)] === [2024-06-28 03:38:46,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash -540944770, now seen corresponding path program 6 times [2024-06-28 03:38:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:46,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829057603] [2024-06-28 03:38:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:46,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:47,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:47,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829057603] [2024-06-28 03:38:47,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829057603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:47,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:47,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:47,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063093386] [2024-06-28 03:38:47,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:47,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:47,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:47,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:47,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:47,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:47,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 135 transitions, 1383 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:47,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:47,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:47,826 INFO L124 PetriNetUnfolderBase]: 324/577 cut-off events. [2024-06-28 03:38:47,827 INFO L125 PetriNetUnfolderBase]: For 20992/20992 co-relation queries the response was YES. [2024-06-28 03:38:47,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3862 conditions, 577 events. 324/577 cut-off events. For 20992/20992 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2351 event pairs, 55 based on Foata normal form. 1/576 useless extension candidates. Maximal degree in co-relation 3792. Up to 551 conditions per place. [2024-06-28 03:38:47,832 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 126 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2024-06-28 03:38:47,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1679 flow [2024-06-28 03:38:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:47,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:38:47,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:38:47,833 INFO L175 Difference]: Start difference. First operand has 144 places, 135 transitions, 1383 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:38:47,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1679 flow [2024-06-28 03:38:47,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1635 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:47,882 INFO L231 Difference]: Finished difference. Result has 147 places, 135 transitions, 1372 flow [2024-06-28 03:38:47,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=139, 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=8, PETRI_FLOW=1372, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2024-06-28 03:38:47,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 03:38:47,883 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 1372 flow [2024-06-28 03:38:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:47,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:47,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:47,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:38:47,883 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)] === [2024-06-28 03:38:47,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:47,884 INFO L85 PathProgramCache]: Analyzing trace with hash -181794558, now seen corresponding path program 3 times [2024-06-28 03:38:47,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:47,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349729230] [2024-06-28 03:38:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:47,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:48,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349729230] [2024-06-28 03:38:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349729230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:48,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:48,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258926445] [2024-06-28 03:38:48,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:48,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:48,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:48,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 1372 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:48,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:48,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:48,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:48,825 INFO L124 PetriNetUnfolderBase]: 335/597 cut-off events. [2024-06-28 03:38:48,825 INFO L125 PetriNetUnfolderBase]: For 22758/22758 co-relation queries the response was YES. [2024-06-28 03:38:48,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3970 conditions, 597 events. 335/597 cut-off events. For 22758/22758 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2470 event pairs, 45 based on Foata normal form. 2/597 useless extension candidates. Maximal degree in co-relation 3899. Up to 513 conditions per place. [2024-06-28 03:38:48,828 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2024-06-28 03:38:48,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 157 transitions, 1805 flow [2024-06-28 03:38:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:38:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:38:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:38:48,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:38:48,829 INFO L175 Difference]: Start difference. First operand has 147 places, 135 transitions, 1372 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:38:48,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 157 transitions, 1805 flow [2024-06-28 03:38:48,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 157 transitions, 1738 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:48,877 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 1476 flow [2024-06-28 03:38:48,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1476, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2024-06-28 03:38:48,877 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:38:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 1476 flow [2024-06-28 03:38:48,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:48,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:48,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:48,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:38:48,878 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)] === [2024-06-28 03:38:48,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:48,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1455082646, now seen corresponding path program 4 times [2024-06-28 03:38:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:48,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719004028] [2024-06-28 03:38:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:48,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:49,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:49,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719004028] [2024-06-28 03:38:49,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719004028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:49,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:49,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:38:49,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842482454] [2024-06-28 03:38:49,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:49,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:38:49,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:38:49,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:38:49,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:38:49,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 1476 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:49,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:49,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:38:49,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:49,673 INFO L124 PetriNetUnfolderBase]: 336/613 cut-off events. [2024-06-28 03:38:49,673 INFO L125 PetriNetUnfolderBase]: For 24282/24282 co-relation queries the response was YES. [2024-06-28 03:38:49,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 613 events. 336/613 cut-off events. For 24282/24282 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2668 event pairs, 44 based on Foata normal form. 4/609 useless extension candidates. Maximal degree in co-relation 4022. Up to 421 conditions per place. [2024-06-28 03:38:49,678 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 102 selfloop transitions, 50 changer transitions 0/172 dead transitions. [2024-06-28 03:38:49,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 172 transitions, 1996 flow [2024-06-28 03:38:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 03:38:49,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 03:38:49,685 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 1476 flow. Second operand 8 states and 99 transitions. [2024-06-28 03:38:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 172 transitions, 1996 flow [2024-06-28 03:38:49,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 172 transitions, 1921 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:49,761 INFO L231 Difference]: Finished difference. Result has 157 places, 157 transitions, 1695 flow [2024-06-28 03:38:49,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1695, PETRI_PLACES=157, PETRI_TRANSITIONS=157} [2024-06-28 03:38:49,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 03:38:49,764 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 157 transitions, 1695 flow [2024-06-28 03:38:49,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:49,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:49,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:49,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:38:49,764 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)] === [2024-06-28 03:38:49,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash -360047790, now seen corresponding path program 1 times [2024-06-28 03:38:49,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:49,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565292228] [2024-06-28 03:38:49,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:49,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565292228] [2024-06-28 03:38:51,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565292228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:51,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:51,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:38:51,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371712669] [2024-06-28 03:38:51,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:51,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:38:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:51,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:38:51,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:38:51,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:51,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 157 transitions, 1695 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) [2024-06-28 03:38:51,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:51,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:51,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:51,479 INFO L124 PetriNetUnfolderBase]: 357/635 cut-off events. [2024-06-28 03:38:51,479 INFO L125 PetriNetUnfolderBase]: For 22381/22381 co-relation queries the response was YES. [2024-06-28 03:38:51,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4239 conditions, 635 events. 357/635 cut-off events. For 22381/22381 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2667 event pairs, 66 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 4163. Up to 603 conditions per place. [2024-06-28 03:38:51,483 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 149 selfloop transitions, 15 changer transitions 0/166 dead transitions. [2024-06-28 03:38:51,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 166 transitions, 2043 flow [2024-06-28 03:38:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 03:38:51,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:38:51,485 INFO L175 Difference]: Start difference. First operand has 157 places, 157 transitions, 1695 flow. Second operand 9 states and 87 transitions. [2024-06-28 03:38:51,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 166 transitions, 2043 flow [2024-06-28 03:38:51,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 166 transitions, 1987 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:38:51,539 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 1673 flow [2024-06-28 03:38:51,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1673, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2024-06-28 03:38:51,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:38:51,540 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 1673 flow [2024-06-28 03:38:51,540 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) [2024-06-28 03:38:51,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:51,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:38:51,541 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)] === [2024-06-28 03:38:51,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash -399534288, now seen corresponding path program 1 times [2024-06-28 03:38:51,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:51,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348599984] [2024-06-28 03:38:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:52,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348599984] [2024-06-28 03:38:52,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348599984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:52,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:52,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908413756] [2024-06-28 03:38:52,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:52,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:52,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 1673 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:52,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:52,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:52,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:52,336 INFO L124 PetriNetUnfolderBase]: 361/643 cut-off events. [2024-06-28 03:38:52,336 INFO L125 PetriNetUnfolderBase]: For 22341/22341 co-relation queries the response was YES. [2024-06-28 03:38:52,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 643 events. 361/643 cut-off events. For 22341/22341 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2733 event pairs, 41 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4131. Up to 357 conditions per place. [2024-06-28 03:38:52,340 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 123 selfloop transitions, 46 changer transitions 0/171 dead transitions. [2024-06-28 03:38:52,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 171 transitions, 2127 flow [2024-06-28 03:38:52,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:52,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:38:52,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:38:52,341 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 1673 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:38:52,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 171 transitions, 2127 flow [2024-06-28 03:38:52,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 171 transitions, 2085 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:38:52,399 INFO L231 Difference]: Finished difference. Result has 163 places, 158 transitions, 1735 flow [2024-06-28 03:38:52,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1735, PETRI_PLACES=163, PETRI_TRANSITIONS=158} [2024-06-28 03:38:52,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-28 03:38:52,400 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 158 transitions, 1735 flow [2024-06-28 03:38:52,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:52,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:52,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:52,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:38:52,400 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)] === [2024-06-28 03:38:52,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -397656618, now seen corresponding path program 2 times [2024-06-28 03:38:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:52,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007886832] [2024-06-28 03:38:52,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:53,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007886832] [2024-06-28 03:38:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007886832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:53,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:53,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:53,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173990548] [2024-06-28 03:38:53,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:53,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:53,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:53,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:53,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 158 transitions, 1735 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:53,257 INFO L124 PetriNetUnfolderBase]: 369/659 cut-off events. [2024-06-28 03:38:53,257 INFO L125 PetriNetUnfolderBase]: For 23614/23614 co-relation queries the response was YES. [2024-06-28 03:38:53,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 659 events. 369/659 cut-off events. For 23614/23614 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2829 event pairs, 53 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 4274. Up to 474 conditions per place. [2024-06-28 03:38:53,261 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 62 changer transitions 0/170 dead transitions. [2024-06-28 03:38:53,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 170 transitions, 2111 flow [2024-06-28 03:38:53,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:38:53,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:38:53,262 INFO L175 Difference]: Start difference. First operand has 163 places, 158 transitions, 1735 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:38:53,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 170 transitions, 2111 flow [2024-06-28 03:38:53,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 170 transitions, 2025 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:38:53,319 INFO L231 Difference]: Finished difference. Result has 166 places, 160 transitions, 1799 flow [2024-06-28 03:38:53,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1799, PETRI_PLACES=166, PETRI_TRANSITIONS=160} [2024-06-28 03:38:53,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 03:38:53,320 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 160 transitions, 1799 flow [2024-06-28 03:38:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:53,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:53,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:53,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:38:53,321 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)] === [2024-06-28 03:38:53,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash -397660338, now seen corresponding path program 3 times [2024-06-28 03:38:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:53,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941734511] [2024-06-28 03:38:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:53,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941734511] [2024-06-28 03:38:53,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941734511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:53,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:53,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:53,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148933709] [2024-06-28 03:38:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:53,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:53,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:53,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 160 transitions, 1799 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:53,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:53,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:53,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:54,065 INFO L124 PetriNetUnfolderBase]: 384/688 cut-off events. [2024-06-28 03:38:54,065 INFO L125 PetriNetUnfolderBase]: For 26432/26432 co-relation queries the response was YES. [2024-06-28 03:38:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 688 events. 384/688 cut-off events. For 26432/26432 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3012 event pairs, 52 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4520. Up to 446 conditions per place. [2024-06-28 03:38:54,069 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 112 selfloop transitions, 61 changer transitions 0/175 dead transitions. [2024-06-28 03:38:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 175 transitions, 2276 flow [2024-06-28 03:38:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:38:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:38:54,070 INFO L175 Difference]: Start difference. First operand has 166 places, 160 transitions, 1799 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:38:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 175 transitions, 2276 flow [2024-06-28 03:38:54,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 175 transitions, 2154 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:54,143 INFO L231 Difference]: Finished difference. Result has 168 places, 163 transitions, 1829 flow [2024-06-28 03:38:54,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1829, PETRI_PLACES=168, PETRI_TRANSITIONS=163} [2024-06-28 03:38:54,144 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-28 03:38:54,144 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 163 transitions, 1829 flow [2024-06-28 03:38:54,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:54,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:54,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:54,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:38:54,145 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)] === [2024-06-28 03:38:54,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 556071609, now seen corresponding path program 1 times [2024-06-28 03:38:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148823637] [2024-06-28 03:38:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148823637] [2024-06-28 03:38:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148823637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:54,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012412914] [2024-06-28 03:38:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:54,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:54,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 163 transitions, 1829 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) [2024-06-28 03:38:54,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:54,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:54,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:55,244 INFO L124 PetriNetUnfolderBase]: 387/693 cut-off events. [2024-06-28 03:38:55,244 INFO L125 PetriNetUnfolderBase]: For 26936/26936 co-relation queries the response was YES. [2024-06-28 03:38:55,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 693 events. 387/693 cut-off events. For 26936/26936 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3031 event pairs, 55 based on Foata normal form. 1/692 useless extension candidates. Maximal degree in co-relation 4581. Up to 437 conditions per place. [2024-06-28 03:38:55,248 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 70 changer transitions 0/177 dead transitions. [2024-06-28 03:38:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 2391 flow [2024-06-28 03:38:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:55,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:55,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:38:55,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:38:55,249 INFO L175 Difference]: Start difference. First operand has 168 places, 163 transitions, 1829 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:38:55,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 2391 flow [2024-06-28 03:38:55,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 177 transitions, 2319 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:38:55,323 INFO L231 Difference]: Finished difference. Result has 173 places, 165 transitions, 1918 flow [2024-06-28 03:38:55,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1918, PETRI_PLACES=173, PETRI_TRANSITIONS=165} [2024-06-28 03:38:55,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 03:38:55,324 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 165 transitions, 1918 flow [2024-06-28 03:38:55,324 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) [2024-06-28 03:38:55,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:55,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:38:55,324 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)] === [2024-06-28 03:38:55,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash 556065874, now seen corresponding path program 4 times [2024-06-28 03:38:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:55,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385990317] [2024-06-28 03:38:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:56,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385990317] [2024-06-28 03:38:56,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385990317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:56,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:56,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:56,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282581370] [2024-06-28 03:38:56,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:56,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:56,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 165 transitions, 1918 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) [2024-06-28 03:38:56,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:56,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:56,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:56,313 INFO L124 PetriNetUnfolderBase]: 384/688 cut-off events. [2024-06-28 03:38:56,314 INFO L125 PetriNetUnfolderBase]: For 27209/27209 co-relation queries the response was YES. [2024-06-28 03:38:56,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4712 conditions, 688 events. 384/688 cut-off events. For 27209/27209 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3024 event pairs, 51 based on Foata normal form. 2/688 useless extension candidates. Maximal degree in co-relation 4631. Up to 570 conditions per place. [2024-06-28 03:38:56,318 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 133 selfloop transitions, 41 changer transitions 0/176 dead transitions. [2024-06-28 03:38:56,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 176 transitions, 2292 flow [2024-06-28 03:38:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:38:56,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:38:56,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:38:56,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:38:56,319 INFO L175 Difference]: Start difference. First operand has 173 places, 165 transitions, 1918 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:38:56,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 176 transitions, 2292 flow [2024-06-28 03:38:56,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 176 transitions, 2144 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:56,392 INFO L231 Difference]: Finished difference. Result has 175 places, 165 transitions, 1858 flow [2024-06-28 03:38:56,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1858, PETRI_PLACES=175, PETRI_TRANSITIONS=165} [2024-06-28 03:38:56,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:38:56,393 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 165 transitions, 1858 flow [2024-06-28 03:38:56,393 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) [2024-06-28 03:38:56,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:56,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:38:56,393 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)] === [2024-06-28 03:38:56,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 556066029, now seen corresponding path program 2 times [2024-06-28 03:38:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100500478] [2024-06-28 03:38:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:56,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:57,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:57,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100500478] [2024-06-28 03:38:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100500478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:57,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909512881] [2024-06-28 03:38:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:57,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:57,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:57,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:57,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 165 transitions, 1858 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:57,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:57,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:57,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:57,377 INFO L124 PetriNetUnfolderBase]: 382/685 cut-off events. [2024-06-28 03:38:57,378 INFO L125 PetriNetUnfolderBase]: For 26304/26304 co-relation queries the response was YES. [2024-06-28 03:38:57,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 685 events. 382/685 cut-off events. For 26304/26304 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3006 event pairs, 52 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 4542. Up to 519 conditions per place. [2024-06-28 03:38:57,381 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 55 changer transitions 0/174 dead transitions. [2024-06-28 03:38:57,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 174 transitions, 2224 flow [2024-06-28 03:38:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:38:57,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:38:57,382 INFO L175 Difference]: Start difference. First operand has 175 places, 165 transitions, 1858 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:38:57,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 174 transitions, 2224 flow [2024-06-28 03:38:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 174 transitions, 2138 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:57,444 INFO L231 Difference]: Finished difference. Result has 176 places, 165 transitions, 1888 flow [2024-06-28 03:38:57,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1888, PETRI_PLACES=176, PETRI_TRANSITIONS=165} [2024-06-28 03:38:57,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-28 03:38:57,444 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 165 transitions, 1888 flow [2024-06-28 03:38:57,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:57,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:57,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:57,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:38:57,445 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)] === [2024-06-28 03:38:57,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -165023022, now seen corresponding path program 5 times [2024-06-28 03:38:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546538109] [2024-06-28 03:38:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:57,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546538109] [2024-06-28 03:38:57,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546538109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:57,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:57,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825512048] [2024-06-28 03:38:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:57,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:57,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:57,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 165 transitions, 1888 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:57,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:57,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:57,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:58,224 INFO L124 PetriNetUnfolderBase]: 386/692 cut-off events. [2024-06-28 03:38:58,224 INFO L125 PetriNetUnfolderBase]: For 28411/28413 co-relation queries the response was YES. [2024-06-28 03:38:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 692 events. 386/692 cut-off events. For 28411/28413 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3043 event pairs, 29 based on Foata normal form. 4/694 useless extension candidates. Maximal degree in co-relation 4607. Up to 465 conditions per place. [2024-06-28 03:38:58,246 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 121 selfloop transitions, 58 changer transitions 0/181 dead transitions. [2024-06-28 03:38:58,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 181 transitions, 2387 flow [2024-06-28 03:38:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:38:58,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:38:58,247 INFO L175 Difference]: Start difference. First operand has 176 places, 165 transitions, 1888 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:38:58,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 181 transitions, 2387 flow [2024-06-28 03:38:58,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 181 transitions, 2288 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:38:58,320 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 1918 flow [2024-06-28 03:38:58,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1918, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2024-06-28 03:38:58,320 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 03:38:58,320 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 1918 flow [2024-06-28 03:38:58,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:58,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:58,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:58,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:38:58,321 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)] === [2024-06-28 03:38:58,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash -165019302, now seen corresponding path program 6 times [2024-06-28 03:38:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761973783] [2024-06-28 03:38:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:58,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761973783] [2024-06-28 03:38:58,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761973783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:58,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:58,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276528478] [2024-06-28 03:38:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:58,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:58,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:58,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:58,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 1918 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:58,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:58,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:58,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:38:59,148 INFO L124 PetriNetUnfolderBase]: 390/700 cut-off events. [2024-06-28 03:38:59,148 INFO L125 PetriNetUnfolderBase]: For 29909/29911 co-relation queries the response was YES. [2024-06-28 03:38:59,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 700 events. 390/700 cut-off events. For 29909/29911 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3107 event pairs, 50 based on Foata normal form. 4/702 useless extension candidates. Maximal degree in co-relation 4691. Up to 520 conditions per place. [2024-06-28 03:38:59,153 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 118 selfloop transitions, 60 changer transitions 0/180 dead transitions. [2024-06-28 03:38:59,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 180 transitions, 2323 flow [2024-06-28 03:38:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:38:59,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:38:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:38:59,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:38:59,156 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 1918 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:38:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 180 transitions, 2323 flow [2024-06-28 03:38:59,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 180 transitions, 2149 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:38:59,227 INFO L231 Difference]: Finished difference. Result has 179 places, 167 transitions, 1882 flow [2024-06-28 03:38:59,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1882, PETRI_PLACES=179, PETRI_TRANSITIONS=167} [2024-06-28 03:38:59,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:38:59,227 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 167 transitions, 1882 flow [2024-06-28 03:38:59,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:38:59,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:38:59,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:38:59,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:38:59,228 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)] === [2024-06-28 03:38:59,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:38:59,228 INFO L85 PathProgramCache]: Analyzing trace with hash -164875152, now seen corresponding path program 7 times [2024-06-28 03:38:59,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:38:59,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050003295] [2024-06-28 03:38:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:38:59,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:38:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:59,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:59,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050003295] [2024-06-28 03:38:59,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050003295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:59,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:59,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:38:59,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22223993] [2024-06-28 03:38:59,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:59,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:38:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:38:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:38:59,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:38:59,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 167 transitions, 1882 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) [2024-06-28 03:38:59,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:59,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:38:59,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:00,321 INFO L124 PetriNetUnfolderBase]: 400/718 cut-off events. [2024-06-28 03:39:00,321 INFO L125 PetriNetUnfolderBase]: For 31053/31055 co-relation queries the response was YES. [2024-06-28 03:39:00,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 718 events. 400/718 cut-off events. For 31053/31055 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3224 event pairs, 50 based on Foata normal form. 4/720 useless extension candidates. Maximal degree in co-relation 4692. Up to 528 conditions per place. [2024-06-28 03:39:00,325 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 65 changer transitions 0/186 dead transitions. [2024-06-28 03:39:00,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 2349 flow [2024-06-28 03:39:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:00,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:39:00,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:39:00,326 INFO L175 Difference]: Start difference. First operand has 179 places, 167 transitions, 1882 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:39:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 186 transitions, 2349 flow [2024-06-28 03:39:00,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2220 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:00,395 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 1952 flow [2024-06-28 03:39:00,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1761, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1952, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2024-06-28 03:39:00,396 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 03:39:00,396 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 1952 flow [2024-06-28 03:39:00,396 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) [2024-06-28 03:39:00,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:00,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:00,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:39:00,396 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)] === [2024-06-28 03:39:00,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1031755732, now seen corresponding path program 1 times [2024-06-28 03:39:00,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:00,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759647195] [2024-06-28 03:39:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:00,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:01,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:01,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759647195] [2024-06-28 03:39:01,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759647195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:01,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:01,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:01,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394758306] [2024-06-28 03:39:01,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:01,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:01,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:01,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:01,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:01,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:01,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 1952 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) [2024-06-28 03:39:01,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:01,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:01,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:01,397 INFO L124 PetriNetUnfolderBase]: 422/754 cut-off events. [2024-06-28 03:39:01,398 INFO L125 PetriNetUnfolderBase]: For 37062/37064 co-relation queries the response was YES. [2024-06-28 03:39:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5054 conditions, 754 events. 422/754 cut-off events. For 37062/37064 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3404 event pairs, 54 based on Foata normal form. 6/758 useless extension candidates. Maximal degree in co-relation 4969. Up to 359 conditions per place. [2024-06-28 03:39:01,405 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 112 selfloop transitions, 84 changer transitions 0/198 dead transitions. [2024-06-28 03:39:01,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 198 transitions, 2650 flow [2024-06-28 03:39:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 03:39:01,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:39:01,406 INFO L175 Difference]: Start difference. First operand has 182 places, 172 transitions, 1952 flow. Second operand 9 states and 117 transitions. [2024-06-28 03:39:01,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 198 transitions, 2650 flow [2024-06-28 03:39:01,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 198 transitions, 2543 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:01,486 INFO L231 Difference]: Finished difference. Result has 186 places, 180 transitions, 2091 flow [2024-06-28 03:39:01,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2091, PETRI_PLACES=186, PETRI_TRANSITIONS=180} [2024-06-28 03:39:01,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 03:39:01,487 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 180 transitions, 2091 flow [2024-06-28 03:39:01,487 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) [2024-06-28 03:39:01,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:01,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:01,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:39:01,488 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)] === [2024-06-28 03:39:01,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1031761529, now seen corresponding path program 3 times [2024-06-28 03:39:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660811068] [2024-06-28 03:39:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:01,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:02,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:02,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660811068] [2024-06-28 03:39:02,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660811068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:02,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:02,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397283942] [2024-06-28 03:39:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:02,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:02,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 180 transitions, 2091 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:39:02,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:02,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:02,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:02,507 INFO L124 PetriNetUnfolderBase]: 425/759 cut-off events. [2024-06-28 03:39:02,508 INFO L125 PetriNetUnfolderBase]: For 33839/33841 co-relation queries the response was YES. [2024-06-28 03:39:02,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5185 conditions, 759 events. 425/759 cut-off events. For 33839/33841 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3419 event pairs, 48 based on Foata normal form. 3/760 useless extension candidates. Maximal degree in co-relation 5099. Up to 555 conditions per place. [2024-06-28 03:39:02,513 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 69 changer transitions 0/197 dead transitions. [2024-06-28 03:39:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 197 transitions, 2641 flow [2024-06-28 03:39:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-28 03:39:02,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112903225806452 [2024-06-28 03:39:02,514 INFO L175 Difference]: Start difference. First operand has 186 places, 180 transitions, 2091 flow. Second operand 8 states and 102 transitions. [2024-06-28 03:39:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 197 transitions, 2641 flow [2024-06-28 03:39:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 2587 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:02,589 INFO L231 Difference]: Finished difference. Result has 190 places, 182 transitions, 2203 flow [2024-06-28 03:39:02,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2203, PETRI_PLACES=190, PETRI_TRANSITIONS=182} [2024-06-28 03:39:02,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 03:39:02,589 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 182 transitions, 2203 flow [2024-06-28 03:39:02,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:39:02,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:02,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:02,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:39:02,590 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)] === [2024-06-28 03:39:02,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1031755949, now seen corresponding path program 4 times [2024-06-28 03:39:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947910672] [2024-06-28 03:39:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:03,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:03,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947910672] [2024-06-28 03:39:03,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947910672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:03,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:03,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047452628] [2024-06-28 03:39:03,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:03,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:03,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:03,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:03,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:03,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 182 transitions, 2203 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) [2024-06-28 03:39:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:03,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:03,756 INFO L124 PetriNetUnfolderBase]: 428/764 cut-off events. [2024-06-28 03:39:03,756 INFO L125 PetriNetUnfolderBase]: For 35249/35251 co-relation queries the response was YES. [2024-06-28 03:39:03,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 764 events. 428/764 cut-off events. For 35249/35251 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3455 event pairs, 51 based on Foata normal form. 3/765 useless extension candidates. Maximal degree in co-relation 5264. Up to 616 conditions per place. [2024-06-28 03:39:03,762 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 141 selfloop transitions, 54 changer transitions 0/197 dead transitions. [2024-06-28 03:39:03,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 197 transitions, 2655 flow [2024-06-28 03:39:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:39:03,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:39:03,767 INFO L175 Difference]: Start difference. First operand has 190 places, 182 transitions, 2203 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:39:03,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 197 transitions, 2655 flow [2024-06-28 03:39:03,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 197 transitions, 2441 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:03,850 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 2130 flow [2024-06-28 03:39:03,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2130, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2024-06-28 03:39:03,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-28 03:39:03,850 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 2130 flow [2024-06-28 03:39:03,851 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) [2024-06-28 03:39:03,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:03,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:03,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:39:03,851 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)] === [2024-06-28 03:39:03,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1026393352, now seen corresponding path program 2 times [2024-06-28 03:39:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106727622] [2024-06-28 03:39:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:03,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106727622] [2024-06-28 03:39:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106727622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809342658] [2024-06-28 03:39:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:04,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:04,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 2130 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) [2024-06-28 03:39:04,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:04,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:04,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:04,899 INFO L124 PetriNetUnfolderBase]: 454/807 cut-off events. [2024-06-28 03:39:04,900 INFO L125 PetriNetUnfolderBase]: For 42339/42339 co-relation queries the response was YES. [2024-06-28 03:39:04,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5732 conditions, 807 events. 454/807 cut-off events. For 42339/42339 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3685 event pairs, 59 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 5643. Up to 377 conditions per place. [2024-06-28 03:39:04,904 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 87 changer transitions 0/207 dead transitions. [2024-06-28 03:39:04,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 207 transitions, 2954 flow [2024-06-28 03:39:04,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 03:39:04,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 03:39:04,905 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 2130 flow. Second operand 9 states and 114 transitions. [2024-06-28 03:39:04,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 207 transitions, 2954 flow [2024-06-28 03:39:04,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 207 transitions, 2768 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:04,985 INFO L231 Difference]: Finished difference. Result has 192 places, 190 transitions, 2193 flow [2024-06-28 03:39:04,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=192, PETRI_TRANSITIONS=190} [2024-06-28 03:39:04,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-28 03:39:04,986 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 190 transitions, 2193 flow [2024-06-28 03:39:04,987 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) [2024-06-28 03:39:04,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:04,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:39:04,987 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)] === [2024-06-28 03:39:04,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1403974462, now seen corresponding path program 3 times [2024-06-28 03:39:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395264634] [2024-06-28 03:39:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:05,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:05,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395264634] [2024-06-28 03:39:05,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395264634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:05,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:05,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287497247] [2024-06-28 03:39:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:05,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:05,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:05,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:05,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 190 transitions, 2193 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) [2024-06-28 03:39:05,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:05,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:05,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:06,356 INFO L124 PetriNetUnfolderBase]: 460/817 cut-off events. [2024-06-28 03:39:06,357 INFO L125 PetriNetUnfolderBase]: For 44563/44563 co-relation queries the response was YES. [2024-06-28 03:39:06,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 817 events. 460/817 cut-off events. For 44563/44563 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3748 event pairs, 61 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 5771. Up to 379 conditions per place. [2024-06-28 03:39:06,365 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 99 changer transitions 0/207 dead transitions. [2024-06-28 03:39:06,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 207 transitions, 2877 flow [2024-06-28 03:39:06,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 03:39:06,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 03:39:06,367 INFO L175 Difference]: Start difference. First operand has 192 places, 190 transitions, 2193 flow. Second operand 9 states and 112 transitions. [2024-06-28 03:39:06,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 207 transitions, 2877 flow [2024-06-28 03:39:06,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 207 transitions, 2793 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:06,473 INFO L231 Difference]: Finished difference. Result has 197 places, 192 transitions, 2343 flow [2024-06-28 03:39:06,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2343, PETRI_PLACES=197, PETRI_TRANSITIONS=192} [2024-06-28 03:39:06,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 03:39:06,474 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 192 transitions, 2343 flow [2024-06-28 03:39:06,474 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) [2024-06-28 03:39:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:06,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:39:06,474 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)] === [2024-06-28 03:39:06,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1026191759, now seen corresponding path program 5 times [2024-06-28 03:39:06,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:06,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952886889] [2024-06-28 03:39:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952886889] [2024-06-28 03:39:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952886889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:07,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072525727] [2024-06-28 03:39:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:07,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:07,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:07,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 192 transitions, 2343 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) [2024-06-28 03:39:07,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:07,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:07,681 INFO L124 PetriNetUnfolderBase]: 463/822 cut-off events. [2024-06-28 03:39:07,681 INFO L125 PetriNetUnfolderBase]: For 45309/45309 co-relation queries the response was YES. [2024-06-28 03:39:07,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 822 events. 463/822 cut-off events. For 45309/45309 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3789 event pairs, 59 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 5920. Up to 673 conditions per place. [2024-06-28 03:39:07,688 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 152 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-28 03:39:07,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 204 transitions, 2794 flow [2024-06-28 03:39:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:07,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:39:07,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:07,693 INFO L175 Difference]: Start difference. First operand has 197 places, 192 transitions, 2343 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:39:07,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 204 transitions, 2794 flow [2024-06-28 03:39:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2590 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:07,786 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 2271 flow [2024-06-28 03:39:07,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2024-06-28 03:39:07,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 03:39:07,787 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 2271 flow [2024-06-28 03:39:07,787 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) [2024-06-28 03:39:07,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:07,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:39:07,787 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)] === [2024-06-28 03:39:07,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1026399304, now seen corresponding path program 8 times [2024-06-28 03:39:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825930173] [2024-06-28 03:39:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:08,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:08,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:08,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825930173] [2024-06-28 03:39:08,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825930173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:08,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893030217] [2024-06-28 03:39:08,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:08,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:08,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:08,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:08,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 2271 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) [2024-06-28 03:39:08,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:08,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:08,884 INFO L124 PetriNetUnfolderBase]: 470/835 cut-off events. [2024-06-28 03:39:08,884 INFO L125 PetriNetUnfolderBase]: For 47991/47991 co-relation queries the response was YES. [2024-06-28 03:39:08,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 835 events. 470/835 cut-off events. For 47991/47991 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3859 event pairs, 63 based on Foata normal form. 2/835 useless extension candidates. Maximal degree in co-relation 5852. Up to 651 conditions per place. [2024-06-28 03:39:08,893 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 140 selfloop transitions, 66 changer transitions 0/208 dead transitions. [2024-06-28 03:39:08,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 208 transitions, 2747 flow [2024-06-28 03:39:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:08,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:08,895 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 2271 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:08,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 208 transitions, 2747 flow [2024-06-28 03:39:09,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 208 transitions, 2640 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:09,014 INFO L231 Difference]: Finished difference. Result has 201 places, 197 transitions, 2341 flow [2024-06-28 03:39:09,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2341, PETRI_PLACES=201, PETRI_TRANSITIONS=197} [2024-06-28 03:39:09,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:39:09,014 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 197 transitions, 2341 flow [2024-06-28 03:39:09,015 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) [2024-06-28 03:39:09,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:09,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:39:09,015 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)] === [2024-06-28 03:39:09,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1026393569, now seen corresponding path program 6 times [2024-06-28 03:39:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:09,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767319412] [2024-06-28 03:39:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767319412] [2024-06-28 03:39:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767319412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574606730] [2024-06-28 03:39:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:09,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:09,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:09,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 197 transitions, 2341 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) [2024-06-28 03:39:09,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:09,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:09,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:10,190 INFO L124 PetriNetUnfolderBase]: 473/840 cut-off events. [2024-06-28 03:39:10,190 INFO L125 PetriNetUnfolderBase]: For 48374/48374 co-relation queries the response was YES. [2024-06-28 03:39:10,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6039 conditions, 840 events. 473/840 cut-off events. For 48374/48374 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3903 event pairs, 59 based on Foata normal form. 1/839 useless extension candidates. Maximal degree in co-relation 5947. Up to 691 conditions per place. [2024-06-28 03:39:10,196 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 159 selfloop transitions, 48 changer transitions 0/209 dead transitions. [2024-06-28 03:39:10,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 209 transitions, 2804 flow [2024-06-28 03:39:10,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:39:10,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:39:10,197 INFO L175 Difference]: Start difference. First operand has 201 places, 197 transitions, 2341 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:39:10,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 209 transitions, 2804 flow [2024-06-28 03:39:10,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 209 transitions, 2709 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:10,296 INFO L231 Difference]: Finished difference. Result has 205 places, 199 transitions, 2376 flow [2024-06-28 03:39:10,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2376, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2024-06-28 03:39:10,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-28 03:39:10,296 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 2376 flow [2024-06-28 03:39:10,296 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) [2024-06-28 03:39:10,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:10,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:39:10,297 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)] === [2024-06-28 03:39:10,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1026191542, now seen corresponding path program 4 times [2024-06-28 03:39:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:10,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318585812] [2024-06-28 03:39:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:10,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:11,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:11,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318585812] [2024-06-28 03:39:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318585812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:11,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712057437] [2024-06-28 03:39:11,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:11,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:11,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:11,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:11,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 2376 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) [2024-06-28 03:39:11,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:11,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:11,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:11,415 INFO L124 PetriNetUnfolderBase]: 469/834 cut-off events. [2024-06-28 03:39:11,415 INFO L125 PetriNetUnfolderBase]: For 48525/48525 co-relation queries the response was YES. [2024-06-28 03:39:11,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 834 events. 469/834 cut-off events. For 48525/48525 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3874 event pairs, 60 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5817. Up to 392 conditions per place. [2024-06-28 03:39:11,422 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 98 changer transitions 0/215 dead transitions. [2024-06-28 03:39:11,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 215 transitions, 3066 flow [2024-06-28 03:39:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-28 03:39:11,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-28 03:39:11,423 INFO L175 Difference]: Start difference. First operand has 205 places, 199 transitions, 2376 flow. Second operand 9 states and 113 transitions. [2024-06-28 03:39:11,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 215 transitions, 3066 flow [2024-06-28 03:39:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 215 transitions, 2949 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:11,558 INFO L231 Difference]: Finished difference. Result has 207 places, 199 transitions, 2460 flow [2024-06-28 03:39:11,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2460, PETRI_PLACES=207, PETRI_TRANSITIONS=199} [2024-06-28 03:39:11,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-28 03:39:11,558 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 199 transitions, 2460 flow [2024-06-28 03:39:11,559 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) [2024-06-28 03:39:11,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:11,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:11,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:39:11,559 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)] === [2024-06-28 03:39:11,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:11,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1457176675, now seen corresponding path program 7 times [2024-06-28 03:39:11,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:11,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889419781] [2024-06-28 03:39:11,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:12,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:12,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889419781] [2024-06-28 03:39:12,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889419781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:12,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:12,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:12,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298670569] [2024-06-28 03:39:12,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:12,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:12,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:12,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:12,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 199 transitions, 2460 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) [2024-06-28 03:39:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:12,650 INFO L124 PetriNetUnfolderBase]: 472/839 cut-off events. [2024-06-28 03:39:12,650 INFO L125 PetriNetUnfolderBase]: For 49210/49210 co-relation queries the response was YES. [2024-06-28 03:39:12,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6090 conditions, 839 events. 472/839 cut-off events. For 49210/49210 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3885 event pairs, 79 based on Foata normal form. 1/838 useless extension candidates. Maximal degree in co-relation 5996. Up to 801 conditions per place. [2024-06-28 03:39:12,660 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 21 changer transitions 0/209 dead transitions. [2024-06-28 03:39:12,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 209 transitions, 2923 flow [2024-06-28 03:39:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:12,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:39:12,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:39:12,662 INFO L175 Difference]: Start difference. First operand has 207 places, 199 transitions, 2460 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:39:12,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 209 transitions, 2923 flow [2024-06-28 03:39:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 209 transitions, 2744 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:12,780 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 2363 flow [2024-06-28 03:39:12,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2363, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-06-28 03:39:12,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-28 03:39:12,781 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 2363 flow [2024-06-28 03:39:12,781 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) [2024-06-28 03:39:12,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:12,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:39:12,781 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)] === [2024-06-28 03:39:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1054867598, now seen corresponding path program 5 times [2024-06-28 03:39:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623252150] [2024-06-28 03:39:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623252150] [2024-06-28 03:39:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623252150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:13,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:13,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:13,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131825877] [2024-06-28 03:39:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:13,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:13,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:13,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:13,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:13,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:13,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 2363 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) [2024-06-28 03:39:13,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:13,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:13,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:14,143 INFO L124 PetriNetUnfolderBase]: 483/857 cut-off events. [2024-06-28 03:39:14,143 INFO L125 PetriNetUnfolderBase]: For 53535/53535 co-relation queries the response was YES. [2024-06-28 03:39:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 857 events. 483/857 cut-off events. For 53535/53535 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4017 event pairs, 79 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 5997. Up to 763 conditions per place. [2024-06-28 03:39:14,150 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 31 changer transitions 0/217 dead transitions. [2024-06-28 03:39:14,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 217 transitions, 2993 flow [2024-06-28 03:39:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:39:14,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:14,151 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 2363 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:39:14,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 217 transitions, 2993 flow [2024-06-28 03:39:14,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 217 transitions, 2936 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:14,265 INFO L231 Difference]: Finished difference. Result has 211 places, 205 transitions, 2431 flow [2024-06-28 03:39:14,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2431, PETRI_PLACES=211, PETRI_TRANSITIONS=205} [2024-06-28 03:39:14,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 03:39:14,266 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 205 transitions, 2431 flow [2024-06-28 03:39:14,266 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) [2024-06-28 03:39:14,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:14,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:14,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:39:14,266 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)] === [2024-06-28 03:39:14,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1054861646, now seen corresponding path program 9 times [2024-06-28 03:39:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591745371] [2024-06-28 03:39:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:14,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:14,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591745371] [2024-06-28 03:39:14,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591745371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:14,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:14,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:14,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712630016] [2024-06-28 03:39:14,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:14,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:14,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:14,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:14,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:14,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:14,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 205 transitions, 2431 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:39:14,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:14,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:14,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:15,160 INFO L124 PetriNetUnfolderBase]: 480/851 cut-off events. [2024-06-28 03:39:15,160 INFO L125 PetriNetUnfolderBase]: For 51929/51931 co-relation queries the response was YES. [2024-06-28 03:39:15,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 851 events. 480/851 cut-off events. For 51929/51931 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3959 event pairs, 33 based on Foata normal form. 4/853 useless extension candidates. Maximal degree in co-relation 5920. Up to 661 conditions per place. [2024-06-28 03:39:15,167 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 159 selfloop transitions, 59 changer transitions 0/220 dead transitions. [2024-06-28 03:39:15,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 220 transitions, 2911 flow [2024-06-28 03:39:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 03:39:15,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 03:39:15,168 INFO L175 Difference]: Start difference. First operand has 211 places, 205 transitions, 2431 flow. Second operand 8 states and 98 transitions. [2024-06-28 03:39:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 220 transitions, 2911 flow [2024-06-28 03:39:15,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 2859 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:15,291 INFO L231 Difference]: Finished difference. Result has 214 places, 205 transitions, 2513 flow [2024-06-28 03:39:15,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2513, PETRI_PLACES=214, PETRI_TRANSITIONS=205} [2024-06-28 03:39:15,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 03:39:15,291 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 205 transitions, 2513 flow [2024-06-28 03:39:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 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) [2024-06-28 03:39:15,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:15,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:39:15,292 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)] === [2024-06-28 03:39:15,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1055076848, now seen corresponding path program 6 times [2024-06-28 03:39:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944090643] [2024-06-28 03:39:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:16,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:16,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944090643] [2024-06-28 03:39:16,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944090643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:16,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280422608] [2024-06-28 03:39:16,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:16,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:16,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 205 transitions, 2513 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) [2024-06-28 03:39:16,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:16,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:16,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:16,792 INFO L124 PetriNetUnfolderBase]: 496/878 cut-off events. [2024-06-28 03:39:16,792 INFO L125 PetriNetUnfolderBase]: For 57525/57525 co-relation queries the response was YES. [2024-06-28 03:39:16,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 878 events. 496/878 cut-off events. For 57525/57525 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4132 event pairs, 84 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 6341. Up to 808 conditions per place. [2024-06-28 03:39:16,801 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 190 selfloop transitions, 28 changer transitions 0/220 dead transitions. [2024-06-28 03:39:16,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 220 transitions, 3153 flow [2024-06-28 03:39:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:39:16,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:39:16,802 INFO L175 Difference]: Start difference. First operand has 214 places, 205 transitions, 2513 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:39:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 220 transitions, 3153 flow [2024-06-28 03:39:16,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 220 transitions, 3013 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:16,925 INFO L231 Difference]: Finished difference. Result has 214 places, 209 transitions, 2500 flow [2024-06-28 03:39:16,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2500, PETRI_PLACES=214, PETRI_TRANSITIONS=209} [2024-06-28 03:39:16,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 03:39:16,926 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 209 transitions, 2500 flow [2024-06-28 03:39:16,926 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) [2024-06-28 03:39:16,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:16,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:39:16,926 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)] === [2024-06-28 03:39:16,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1723093001, now seen corresponding path program 1 times [2024-06-28 03:39:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484884798] [2024-06-28 03:39:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484884798] [2024-06-28 03:39:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484884798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:18,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818409178] [2024-06-28 03:39:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:18,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:18,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:18,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:18,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 209 transitions, 2500 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) [2024-06-28 03:39:18,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:18,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:18,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:18,659 INFO L124 PetriNetUnfolderBase]: 494/875 cut-off events. [2024-06-28 03:39:18,660 INFO L125 PetriNetUnfolderBase]: For 52239/52239 co-relation queries the response was YES. [2024-06-28 03:39:18,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6236 conditions, 875 events. 494/875 cut-off events. For 52239/52239 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4103 event pairs, 79 based on Foata normal form. 1/874 useless extension candidates. Maximal degree in co-relation 6139. Up to 840 conditions per place. [2024-06-28 03:39:18,666 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 198 selfloop transitions, 18 changer transitions 0/218 dead transitions. [2024-06-28 03:39:18,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 218 transitions, 2954 flow [2024-06-28 03:39:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:18,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:18,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:39:18,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31899641577060933 [2024-06-28 03:39:18,667 INFO L175 Difference]: Start difference. First operand has 214 places, 209 transitions, 2500 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:39:18,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 218 transitions, 2954 flow [2024-06-28 03:39:18,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 218 transitions, 2898 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:18,777 INFO L231 Difference]: Finished difference. Result has 218 places, 209 transitions, 2488 flow [2024-06-28 03:39:18,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2444, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2488, PETRI_PLACES=218, PETRI_TRANSITIONS=209} [2024-06-28 03:39:18,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-28 03:39:18,778 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 209 transitions, 2488 flow [2024-06-28 03:39:18,778 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) [2024-06-28 03:39:18,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:18,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:18,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:39:18,779 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)] === [2024-06-28 03:39:18,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash 154082348, now seen corresponding path program 7 times [2024-06-28 03:39:18,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:18,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655755301] [2024-06-28 03:39:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:18,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655755301] [2024-06-28 03:39:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655755301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:19,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:19,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482750488] [2024-06-28 03:39:19,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:19,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:19,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 209 transitions, 2488 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) [2024-06-28 03:39:19,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:19,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:19,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:20,414 INFO L124 PetriNetUnfolderBase]: 490/869 cut-off events. [2024-06-28 03:39:20,415 INFO L125 PetriNetUnfolderBase]: For 52114/52114 co-relation queries the response was YES. [2024-06-28 03:39:20,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6101 conditions, 869 events. 490/869 cut-off events. For 52114/52114 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4079 event pairs, 82 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 6002. Up to 802 conditions per place. [2024-06-28 03:39:20,421 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2024-06-28 03:39:20,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 2954 flow [2024-06-28 03:39:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:20,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:20,422 INFO L175 Difference]: Start difference. First operand has 218 places, 209 transitions, 2488 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:20,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 2954 flow [2024-06-28 03:39:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 220 transitions, 2888 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:20,552 INFO L231 Difference]: Finished difference. Result has 218 places, 209 transitions, 2481 flow [2024-06-28 03:39:20,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2481, PETRI_PLACES=218, PETRI_TRANSITIONS=209} [2024-06-28 03:39:20,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-28 03:39:20,553 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 209 transitions, 2481 flow [2024-06-28 03:39:20,553 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) [2024-06-28 03:39:20,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:20,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:20,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:39:20,553 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)] === [2024-06-28 03:39:20,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:20,554 INFO L85 PathProgramCache]: Analyzing trace with hash 580686320, now seen corresponding path program 8 times [2024-06-28 03:39:20,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:20,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304488269] [2024-06-28 03:39:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:21,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:21,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:21,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304488269] [2024-06-28 03:39:21,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304488269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:21,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:21,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:21,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007599889] [2024-06-28 03:39:21,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:21,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:21,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:21,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:21,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:21,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 209 transitions, 2481 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) [2024-06-28 03:39:21,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:21,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:21,913 INFO L124 PetriNetUnfolderBase]: 506/895 cut-off events. [2024-06-28 03:39:21,913 INFO L125 PetriNetUnfolderBase]: For 56047/56047 co-relation queries the response was YES. [2024-06-28 03:39:21,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6374 conditions, 895 events. 506/895 cut-off events. For 56047/56047 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4208 event pairs, 82 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6275. Up to 816 conditions per place. [2024-06-28 03:39:21,920 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 197 selfloop transitions, 27 changer transitions 0/226 dead transitions. [2024-06-28 03:39:21,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 226 transitions, 3265 flow [2024-06-28 03:39:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:21,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:21,921 INFO L175 Difference]: Start difference. First operand has 218 places, 209 transitions, 2481 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:21,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 226 transitions, 3265 flow [2024-06-28 03:39:22,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 226 transitions, 3205 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:22,058 INFO L231 Difference]: Finished difference. Result has 219 places, 213 transitions, 2546 flow [2024-06-28 03:39:22,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2421, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2546, PETRI_PLACES=219, PETRI_TRANSITIONS=213} [2024-06-28 03:39:22,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 03:39:22,059 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 213 transitions, 2546 flow [2024-06-28 03:39:22,059 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) [2024-06-28 03:39:22,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:22,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:22,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:39:22,060 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)] === [2024-06-28 03:39:22,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1457378485, now seen corresponding path program 8 times [2024-06-28 03:39:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:22,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865221910] [2024-06-28 03:39:22,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:22,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:22,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865221910] [2024-06-28 03:39:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865221910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:22,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:22,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:22,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742043655] [2024-06-28 03:39:22,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:22,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:22,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:22,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:22,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:22,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 213 transitions, 2546 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) [2024-06-28 03:39:22,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:22,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:23,381 INFO L124 PetriNetUnfolderBase]: 509/900 cut-off events. [2024-06-28 03:39:23,381 INFO L125 PetriNetUnfolderBase]: For 56121/56121 co-relation queries the response was YES. [2024-06-28 03:39:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6451 conditions, 900 events. 509/900 cut-off events. For 56121/56121 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4244 event pairs, 85 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 6351. Up to 862 conditions per place. [2024-06-28 03:39:23,386 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 200 selfloop transitions, 21 changer transitions 0/223 dead transitions. [2024-06-28 03:39:23,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 223 transitions, 3039 flow [2024-06-28 03:39:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:39:23,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:39:23,387 INFO L175 Difference]: Start difference. First operand has 219 places, 213 transitions, 2546 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:39:23,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 223 transitions, 3039 flow [2024-06-28 03:39:23,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 223 transitions, 2952 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:23,529 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 2543 flow [2024-06-28 03:39:23,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2543, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-06-28 03:39:23,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 03:39:23,530 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 2543 flow [2024-06-28 03:39:23,530 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) [2024-06-28 03:39:23,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:23,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:39:23,530 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)] === [2024-06-28 03:39:23,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1723083422, now seen corresponding path program 9 times [2024-06-28 03:39:23,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:23,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183597039] [2024-06-28 03:39:23,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:23,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183597039] [2024-06-28 03:39:24,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183597039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:24,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694791848] [2024-06-28 03:39:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:24,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:24,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:24,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:24,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 2543 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) [2024-06-28 03:39:24,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:24,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:24,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:24,702 INFO L124 PetriNetUnfolderBase]: 503/891 cut-off events. [2024-06-28 03:39:24,703 INFO L125 PetriNetUnfolderBase]: For 55605/55605 co-relation queries the response was YES. [2024-06-28 03:39:24,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6129 conditions, 891 events. 503/891 cut-off events. For 55605/55605 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4208 event pairs, 81 based on Foata normal form. 3/892 useless extension candidates. Maximal degree in co-relation 6029. Up to 845 conditions per place. [2024-06-28 03:39:24,714 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 202 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2024-06-28 03:39:24,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 225 transitions, 3015 flow [2024-06-28 03:39:24,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:39:24,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:39:24,715 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 2543 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:39:24,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 225 transitions, 3015 flow [2024-06-28 03:39:24,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 225 transitions, 2934 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:24,871 INFO L231 Difference]: Finished difference. Result has 224 places, 215 transitions, 2512 flow [2024-06-28 03:39:24,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2512, PETRI_PLACES=224, PETRI_TRANSITIONS=215} [2024-06-28 03:39:24,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:39:24,872 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 215 transitions, 2512 flow [2024-06-28 03:39:24,872 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) [2024-06-28 03:39:24,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:24,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:24,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:39:24,872 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)] === [2024-06-28 03:39:24,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:24,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1713878995, now seen corresponding path program 9 times [2024-06-28 03:39:24,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:24,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50051671] [2024-06-28 03:39:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:25,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50051671] [2024-06-28 03:39:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50051671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195317541] [2024-06-28 03:39:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:25,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:25,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 215 transitions, 2512 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) [2024-06-28 03:39:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:25,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:25,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:26,111 INFO L124 PetriNetUnfolderBase]: 501/888 cut-off events. [2024-06-28 03:39:26,112 INFO L125 PetriNetUnfolderBase]: For 51451/51451 co-relation queries the response was YES. [2024-06-28 03:39:26,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 888 events. 501/888 cut-off events. For 51451/51451 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4195 event pairs, 83 based on Foata normal form. 1/887 useless extension candidates. Maximal degree in co-relation 5936. Up to 859 conditions per place. [2024-06-28 03:39:26,118 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 17 changer transitions 0/223 dead transitions. [2024-06-28 03:39:26,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 223 transitions, 2972 flow [2024-06-28 03:39:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 03:39:26,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-28 03:39:26,119 INFO L175 Difference]: Start difference. First operand has 224 places, 215 transitions, 2512 flow. Second operand 10 states and 94 transitions. [2024-06-28 03:39:26,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 223 transitions, 2972 flow [2024-06-28 03:39:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 223 transitions, 2894 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:26,254 INFO L231 Difference]: Finished difference. Result has 225 places, 215 transitions, 2473 flow [2024-06-28 03:39:26,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2434, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2473, PETRI_PLACES=225, PETRI_TRANSITIONS=215} [2024-06-28 03:39:26,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-28 03:39:26,255 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 215 transitions, 2473 flow [2024-06-28 03:39:26,255 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) [2024-06-28 03:39:26,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:26,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:39:26,255 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)] === [2024-06-28 03:39:26,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 580678880, now seen corresponding path program 10 times [2024-06-28 03:39:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:26,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332207831] [2024-06-28 03:39:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332207831] [2024-06-28 03:39:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332207831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:27,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:27,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:27,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973611300] [2024-06-28 03:39:27,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:27,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:27,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:27,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:27,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:27,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:27,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 215 transitions, 2473 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) [2024-06-28 03:39:27,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:27,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:27,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:27,524 INFO L124 PetriNetUnfolderBase]: 497/882 cut-off events. [2024-06-28 03:39:27,525 INFO L125 PetriNetUnfolderBase]: For 50868/50868 co-relation queries the response was YES. [2024-06-28 03:39:27,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5841 conditions, 882 events. 497/882 cut-off events. For 50868/50868 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4194 event pairs, 78 based on Foata normal form. 2/882 useless extension candidates. Maximal degree in co-relation 5740. Up to 810 conditions per place. [2024-06-28 03:39:27,531 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 29 changer transitions 0/226 dead transitions. [2024-06-28 03:39:27,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 226 transitions, 2951 flow [2024-06-28 03:39:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:27,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:39:27,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 03:39:27,532 INFO L175 Difference]: Start difference. First operand has 225 places, 215 transitions, 2473 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:39:27,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 226 transitions, 2951 flow [2024-06-28 03:39:27,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 226 transitions, 2801 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:39:27,655 INFO L231 Difference]: Finished difference. Result has 224 places, 215 transitions, 2386 flow [2024-06-28 03:39:27,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2386, PETRI_PLACES=224, PETRI_TRANSITIONS=215} [2024-06-28 03:39:27,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:39:27,656 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 215 transitions, 2386 flow [2024-06-28 03:39:27,656 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) [2024-06-28 03:39:27,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:27,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:27,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:39:27,657 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)] === [2024-06-28 03:39:27,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 499340473, now seen corresponding path program 1 times [2024-06-28 03:39:27,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:27,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102225311] [2024-06-28 03:39:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:28,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102225311] [2024-06-28 03:39:28,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102225311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:28,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:28,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840385467] [2024-06-28 03:39:28,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:28,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:28,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 215 transitions, 2386 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) [2024-06-28 03:39:28,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:28,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:28,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:28,806 INFO L124 PetriNetUnfolderBase]: 501/890 cut-off events. [2024-06-28 03:39:28,807 INFO L125 PetriNetUnfolderBase]: For 52054/52054 co-relation queries the response was YES. [2024-06-28 03:39:28,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 890 events. 501/890 cut-off events. For 52054/52054 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4235 event pairs, 46 based on Foata normal form. 2/890 useless extension candidates. Maximal degree in co-relation 5660. Up to 388 conditions per place. [2024-06-28 03:39:28,813 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 81 changer transitions 0/234 dead transitions. [2024-06-28 03:39:28,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 234 transitions, 3026 flow [2024-06-28 03:39:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:28,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:39:28,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:39:28,817 INFO L175 Difference]: Start difference. First operand has 224 places, 215 transitions, 2386 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:39:28,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 234 transitions, 3026 flow [2024-06-28 03:39:28,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 234 transitions, 2965 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:28,940 INFO L231 Difference]: Finished difference. Result has 226 places, 216 transitions, 2497 flow [2024-06-28 03:39:28,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2497, PETRI_PLACES=226, PETRI_TRANSITIONS=216} [2024-06-28 03:39:28,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 03:39:28,941 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 216 transitions, 2497 flow [2024-06-28 03:39:28,941 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) [2024-06-28 03:39:28,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:28,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:28,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:39:28,942 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)] === [2024-06-28 03:39:28,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash 557432923, now seen corresponding path program 2 times [2024-06-28 03:39:28,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:28,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211602992] [2024-06-28 03:39:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:28,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:29,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:29,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211602992] [2024-06-28 03:39:29,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211602992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:29,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:29,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057956249] [2024-06-28 03:39:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:29,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:29,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 216 transitions, 2497 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) [2024-06-28 03:39:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:29,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:30,203 INFO L124 PetriNetUnfolderBase]: 545/974 cut-off events. [2024-06-28 03:39:30,203 INFO L125 PetriNetUnfolderBase]: For 58041/58041 co-relation queries the response was YES. [2024-06-28 03:39:30,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6357 conditions, 974 events. 545/974 cut-off events. For 58041/58041 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4835 event pairs, 64 based on Foata normal form. 2/974 useless extension candidates. Maximal degree in co-relation 6255. Up to 619 conditions per place. [2024-06-28 03:39:30,215 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 155 selfloop transitions, 90 changer transitions 0/247 dead transitions. [2024-06-28 03:39:30,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 247 transitions, 3290 flow [2024-06-28 03:39:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:30,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:30,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:39:30,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:39:30,217 INFO L175 Difference]: Start difference. First operand has 226 places, 216 transitions, 2497 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:39:30,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 247 transitions, 3290 flow [2024-06-28 03:39:30,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 3181 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:30,370 INFO L231 Difference]: Finished difference. Result has 230 places, 226 transitions, 2695 flow [2024-06-28 03:39:30,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2397, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2695, PETRI_PLACES=230, PETRI_TRANSITIONS=226} [2024-06-28 03:39:30,370 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:39:30,370 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 226 transitions, 2695 flow [2024-06-28 03:39:30,370 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) [2024-06-28 03:39:30,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:30,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:30,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:39:30,371 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)] === [2024-06-28 03:39:30,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 557553079, now seen corresponding path program 1 times [2024-06-28 03:39:30,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:30,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630417500] [2024-06-28 03:39:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:30,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:31,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:31,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:31,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630417500] [2024-06-28 03:39:31,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630417500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:31,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:31,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:31,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709471823] [2024-06-28 03:39:31,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:31,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:31,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:31,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:31,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:31,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 226 transitions, 2695 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:31,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:31,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:31,527 INFO L124 PetriNetUnfolderBase]: 541/968 cut-off events. [2024-06-28 03:39:31,528 INFO L125 PetriNetUnfolderBase]: For 55867/55867 co-relation queries the response was YES. [2024-06-28 03:39:31,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6351 conditions, 968 events. 541/968 cut-off events. For 55867/55867 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4806 event pairs, 67 based on Foata normal form. 2/968 useless extension candidates. Maximal degree in co-relation 6248. Up to 480 conditions per place. [2024-06-28 03:39:31,536 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 99 changer transitions 0/241 dead transitions. [2024-06-28 03:39:31,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 241 transitions, 3477 flow [2024-06-28 03:39:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 03:39:31,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 03:39:31,537 INFO L175 Difference]: Start difference. First operand has 230 places, 226 transitions, 2695 flow. Second operand 9 states and 117 transitions. [2024-06-28 03:39:31,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 241 transitions, 3477 flow [2024-06-28 03:39:31,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 241 transitions, 3367 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:31,681 INFO L231 Difference]: Finished difference. Result has 235 places, 226 transitions, 2793 flow [2024-06-28 03:39:31,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2793, PETRI_PLACES=235, PETRI_TRANSITIONS=226} [2024-06-28 03:39:31,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:39:31,682 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 226 transitions, 2793 flow [2024-06-28 03:39:31,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:31,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:39:31,682 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)] === [2024-06-28 03:39:31,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash 557548243, now seen corresponding path program 3 times [2024-06-28 03:39:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:31,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785623036] [2024-06-28 03:39:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:32,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:32,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785623036] [2024-06-28 03:39:32,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785623036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:32,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:32,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:32,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72242930] [2024-06-28 03:39:32,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:32,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:32,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:32,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:32,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 226 transitions, 2793 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) [2024-06-28 03:39:32,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:32,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:32,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:33,046 INFO L124 PetriNetUnfolderBase]: 545/976 cut-off events. [2024-06-28 03:39:33,046 INFO L125 PetriNetUnfolderBase]: For 57416/57416 co-relation queries the response was YES. [2024-06-28 03:39:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 976 events. 545/976 cut-off events. For 57416/57416 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4865 event pairs, 66 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 6483. Up to 667 conditions per place. [2024-06-28 03:39:33,053 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 155 selfloop transitions, 90 changer transitions 0/247 dead transitions. [2024-06-28 03:39:33,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 247 transitions, 3503 flow [2024-06-28 03:39:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:39:33,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:39:33,054 INFO L175 Difference]: Start difference. First operand has 235 places, 226 transitions, 2793 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:39:33,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 247 transitions, 3503 flow [2024-06-28 03:39:33,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 247 transitions, 3186 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:39:33,209 INFO L231 Difference]: Finished difference. Result has 236 places, 229 transitions, 2699 flow [2024-06-28 03:39:33,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2699, PETRI_PLACES=236, PETRI_TRANSITIONS=229} [2024-06-28 03:39:33,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:39:33,209 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 229 transitions, 2699 flow [2024-06-28 03:39:33,209 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) [2024-06-28 03:39:33,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:33,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:39:33,210 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)] === [2024-06-28 03:39:33,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 557552893, now seen corresponding path program 4 times [2024-06-28 03:39:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:33,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055706276] [2024-06-28 03:39:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:33,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:33,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:33,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055706276] [2024-06-28 03:39:33,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055706276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:33,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:33,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181088493] [2024-06-28 03:39:33,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:33,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:33,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:33,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:33,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:34,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:34,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 229 transitions, 2699 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:34,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:34,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:34,455 INFO L124 PetriNetUnfolderBase]: 595/1062 cut-off events. [2024-06-28 03:39:34,455 INFO L125 PetriNetUnfolderBase]: For 63338/63338 co-relation queries the response was YES. [2024-06-28 03:39:34,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 1062 events. 595/1062 cut-off events. For 63338/63338 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5382 event pairs, 114 based on Foata normal form. 4/1064 useless extension candidates. Maximal degree in co-relation 6932. Up to 873 conditions per place. [2024-06-28 03:39:34,467 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 202 selfloop transitions, 68 changer transitions 0/272 dead transitions. [2024-06-28 03:39:34,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 272 transitions, 3639 flow [2024-06-28 03:39:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:39:34,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:34,469 INFO L175 Difference]: Start difference. First operand has 236 places, 229 transitions, 2699 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:39:34,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 272 transitions, 3639 flow [2024-06-28 03:39:34,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 272 transitions, 3405 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:34,617 INFO L231 Difference]: Finished difference. Result has 243 places, 256 transitions, 3045 flow [2024-06-28 03:39:34,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3045, PETRI_PLACES=243, PETRI_TRANSITIONS=256} [2024-06-28 03:39:34,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-28 03:39:34,617 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 256 transitions, 3045 flow [2024-06-28 03:39:34,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:34,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:34,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:39:34,618 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)] === [2024-06-28 03:39:34,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1045319967, now seen corresponding path program 2 times [2024-06-28 03:39:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98744762] [2024-06-28 03:39:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:35,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:35,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98744762] [2024-06-28 03:39:35,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98744762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:35,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022670088] [2024-06-28 03:39:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:35,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:35,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:35,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 256 transitions, 3045 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) [2024-06-28 03:39:35,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:35,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:35,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,196 INFO L124 PetriNetUnfolderBase]: 601/1072 cut-off events. [2024-06-28 03:39:36,196 INFO L125 PetriNetUnfolderBase]: For 60446/60446 co-relation queries the response was YES. [2024-06-28 03:39:36,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7196 conditions, 1072 events. 601/1072 cut-off events. For 60446/60446 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5482 event pairs, 68 based on Foata normal form. 2/1072 useless extension candidates. Maximal degree in co-relation 7084. Up to 781 conditions per place. [2024-06-28 03:39:36,203 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 194 selfloop transitions, 76 changer transitions 0/272 dead transitions. [2024-06-28 03:39:36,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 272 transitions, 3641 flow [2024-06-28 03:39:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:36,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:39:36,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:39:36,204 INFO L175 Difference]: Start difference. First operand has 243 places, 256 transitions, 3045 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:39:36,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 272 transitions, 3641 flow [2024-06-28 03:39:36,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 272 transitions, 3562 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:36,374 INFO L231 Difference]: Finished difference. Result has 248 places, 258 transitions, 3145 flow [2024-06-28 03:39:36,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3145, PETRI_PLACES=248, PETRI_TRANSITIONS=258} [2024-06-28 03:39:36,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 03:39:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 258 transitions, 3145 flow [2024-06-28 03:39:36,375 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) [2024-06-28 03:39:36,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:36,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:39:36,375 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)] === [2024-06-28 03:39:36,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash 58352239, now seen corresponding path program 3 times [2024-06-28 03:39:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784616639] [2024-06-28 03:39:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:37,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784616639] [2024-06-28 03:39:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784616639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176220359] [2024-06-28 03:39:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:37,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:37,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:37,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:37,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:37,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:37,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 258 transitions, 3145 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) [2024-06-28 03:39:37,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:37,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,106 INFO L124 PetriNetUnfolderBase]: 607/1082 cut-off events. [2024-06-28 03:39:38,106 INFO L125 PetriNetUnfolderBase]: For 62706/62706 co-relation queries the response was YES. [2024-06-28 03:39:38,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7346 conditions, 1082 events. 607/1082 cut-off events. For 62706/62706 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5514 event pairs, 76 based on Foata normal form. 2/1082 useless extension candidates. Maximal degree in co-relation 7234. Up to 534 conditions per place. [2024-06-28 03:39:38,115 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 120 changer transitions 0/279 dead transitions. [2024-06-28 03:39:38,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 279 transitions, 4053 flow [2024-06-28 03:39:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:39:38,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:39:38,117 INFO L175 Difference]: Start difference. First operand has 248 places, 258 transitions, 3145 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:39:38,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 279 transitions, 4053 flow [2024-06-28 03:39:38,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 279 transitions, 3896 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:38,271 INFO L231 Difference]: Finished difference. Result has 251 places, 260 transitions, 3256 flow [2024-06-28 03:39:38,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3256, PETRI_PLACES=251, PETRI_TRANSITIONS=260} [2024-06-28 03:39:38,271 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 03:39:38,271 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 260 transitions, 3256 flow [2024-06-28 03:39:38,272 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) [2024-06-28 03:39:38,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:38,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:38,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:39:38,272 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)] === [2024-06-28 03:39:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash 58352053, now seen corresponding path program 5 times [2024-06-28 03:39:38,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:38,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600547321] [2024-06-28 03:39:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:39,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600547321] [2024-06-28 03:39:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600547321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600324997] [2024-06-28 03:39:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:39,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:39,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:39,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:39,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 260 transitions, 3256 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) [2024-06-28 03:39:39,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:39,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:39,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:39,579 INFO L124 PetriNetUnfolderBase]: 611/1090 cut-off events. [2024-06-28 03:39:39,579 INFO L125 PetriNetUnfolderBase]: For 64517/64517 co-relation queries the response was YES. [2024-06-28 03:39:39,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7474 conditions, 1090 events. 611/1090 cut-off events. For 64517/64517 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5587 event pairs, 72 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7361. Up to 923 conditions per place. [2024-06-28 03:39:39,588 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 212 selfloop transitions, 59 changer transitions 0/273 dead transitions. [2024-06-28 03:39:39,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 3835 flow [2024-06-28 03:39:39,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:39:39,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:39:39,593 INFO L175 Difference]: Start difference. First operand has 251 places, 260 transitions, 3256 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:39:39,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 3835 flow [2024-06-28 03:39:39,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 273 transitions, 3578 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:39,823 INFO L231 Difference]: Finished difference. Result has 252 places, 261 transitions, 3133 flow [2024-06-28 03:39:39,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3133, PETRI_PLACES=252, PETRI_TRANSITIONS=261} [2024-06-28 03:39:39,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 03:39:39,823 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 261 transitions, 3133 flow [2024-06-28 03:39:39,824 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) [2024-06-28 03:39:39,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:39,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:39:39,824 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)] === [2024-06-28 03:39:39,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,824 INFO L85 PathProgramCache]: Analyzing trace with hash 58174423, now seen corresponding path program 6 times [2024-06-28 03:39:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203126237] [2024-06-28 03:39:39,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203126237] [2024-06-28 03:39:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203126237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:40,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:40,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594534595] [2024-06-28 03:39:40,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:40,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:40,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:40,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:40,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:40,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 261 transitions, 3133 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:40,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:40,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,096 INFO L124 PetriNetUnfolderBase]: 622/1111 cut-off events. [2024-06-28 03:39:41,097 INFO L125 PetriNetUnfolderBase]: For 70706/70706 co-relation queries the response was YES. [2024-06-28 03:39:41,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7572 conditions, 1111 events. 622/1111 cut-off events. For 70706/70706 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5744 event pairs, 71 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 7458. Up to 879 conditions per place. [2024-06-28 03:39:41,110 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 203 selfloop transitions, 71 changer transitions 0/276 dead transitions. [2024-06-28 03:39:41,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 276 transitions, 3877 flow [2024-06-28 03:39:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:39:41,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:39:41,111 INFO L175 Difference]: Start difference. First operand has 252 places, 261 transitions, 3133 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:39:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 276 transitions, 3877 flow [2024-06-28 03:39:41,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 276 transitions, 3756 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:41,309 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 3183 flow [2024-06-28 03:39:41,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3183, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2024-06-28 03:39:41,310 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 03:39:41,310 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 3183 flow [2024-06-28 03:39:41,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:41,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:39:41,311 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)] === [2024-06-28 03:39:41,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash 58179073, now seen corresponding path program 7 times [2024-06-28 03:39:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:41,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829432028] [2024-06-28 03:39:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:42,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:42,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829432028] [2024-06-28 03:39:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829432028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194613156] [2024-06-28 03:39:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:42,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:42,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:42,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 3183 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:42,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:42,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:42,614 INFO L124 PetriNetUnfolderBase]: 619/1106 cut-off events. [2024-06-28 03:39:42,614 INFO L125 PetriNetUnfolderBase]: For 67727/67727 co-relation queries the response was YES. [2024-06-28 03:39:42,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 1106 events. 619/1106 cut-off events. For 67727/67727 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5687 event pairs, 74 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 7348. Up to 921 conditions per place. [2024-06-28 03:39:42,628 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 205 selfloop transitions, 67 changer transitions 0/274 dead transitions. [2024-06-28 03:39:42,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 274 transitions, 3753 flow [2024-06-28 03:39:42,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:39:42,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:39:42,630 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 3183 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:39:42,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 274 transitions, 3753 flow [2024-06-28 03:39:42,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 274 transitions, 3636 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:42,811 INFO L231 Difference]: Finished difference. Result has 256 places, 263 transitions, 3205 flow [2024-06-28 03:39:42,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3205, PETRI_PLACES=256, PETRI_TRANSITIONS=263} [2024-06-28 03:39:42,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:39:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 263 transitions, 3205 flow [2024-06-28 03:39:42,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:42,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:42,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:39:42,812 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)] === [2024-06-28 03:39:42,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 58179259, now seen corresponding path program 4 times [2024-06-28 03:39:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:42,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636586509] [2024-06-28 03:39:42,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:42,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:43,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636586509] [2024-06-28 03:39:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636586509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576795188] [2024-06-28 03:39:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:43,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:43,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:43,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:43,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 263 transitions, 3205 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:43,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:43,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,213 INFO L124 PetriNetUnfolderBase]: 615/1100 cut-off events. [2024-06-28 03:39:44,213 INFO L125 PetriNetUnfolderBase]: For 63798/63798 co-relation queries the response was YES. [2024-06-28 03:39:44,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7365 conditions, 1100 events. 615/1100 cut-off events. For 63798/63798 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5695 event pairs, 71 based on Foata normal form. 2/1100 useless extension candidates. Maximal degree in co-relation 7249. Up to 769 conditions per place. [2024-06-28 03:39:44,226 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 187 selfloop transitions, 88 changer transitions 0/277 dead transitions. [2024-06-28 03:39:44,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 277 transitions, 3795 flow [2024-06-28 03:39:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 03:39:44,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 03:39:44,227 INFO L175 Difference]: Start difference. First operand has 256 places, 263 transitions, 3205 flow. Second operand 9 states and 111 transitions. [2024-06-28 03:39:44,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 277 transitions, 3795 flow [2024-06-28 03:39:44,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 277 transitions, 3654 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:44,417 INFO L231 Difference]: Finished difference. Result has 258 places, 263 transitions, 3246 flow [2024-06-28 03:39:44,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3246, PETRI_PLACES=258, PETRI_TRANSITIONS=263} [2024-06-28 03:39:44,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 03:39:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 263 transitions, 3246 flow [2024-06-28 03:39:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:39:44,418 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)] === [2024-06-28 03:39:44,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 53590453, now seen corresponding path program 8 times [2024-06-28 03:39:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428809943] [2024-06-28 03:39:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:45,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428809943] [2024-06-28 03:39:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428809943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:45,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259737163] [2024-06-28 03:39:45,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:45,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:45,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 263 transitions, 3246 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:45,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:45,477 INFO L124 PetriNetUnfolderBase]: 626/1121 cut-off events. [2024-06-28 03:39:45,478 INFO L125 PetriNetUnfolderBase]: For 71014/71014 co-relation queries the response was YES. [2024-06-28 03:39:45,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7690 conditions, 1121 events. 626/1121 cut-off events. For 71014/71014 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5823 event pairs, 74 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 7573. Up to 617 conditions per place. [2024-06-28 03:39:45,492 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 159 selfloop transitions, 118 changer transitions 0/279 dead transitions. [2024-06-28 03:39:45,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 279 transitions, 4008 flow [2024-06-28 03:39:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:39:45,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:39:45,494 INFO L175 Difference]: Start difference. First operand has 258 places, 263 transitions, 3246 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:39:45,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 279 transitions, 4008 flow [2024-06-28 03:39:45,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 279 transitions, 3803 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:45,721 INFO L231 Difference]: Finished difference. Result has 259 places, 265 transitions, 3313 flow [2024-06-28 03:39:45,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3313, PETRI_PLACES=259, PETRI_TRANSITIONS=265} [2024-06-28 03:39:45,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2024-06-28 03:39:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 265 transitions, 3313 flow [2024-06-28 03:39:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:45,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:45,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:39:45,722 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)] === [2024-06-28 03:39:45,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash 53705773, now seen corresponding path program 9 times [2024-06-28 03:39:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661173213] [2024-06-28 03:39:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661173213] [2024-06-28 03:39:46,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661173213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:46,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:46,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949418069] [2024-06-28 03:39:46,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:46,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:46,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:46,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:46,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 265 transitions, 3313 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:46,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:46,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,805 INFO L124 PetriNetUnfolderBase]: 630/1129 cut-off events. [2024-06-28 03:39:46,805 INFO L125 PetriNetUnfolderBase]: For 73451/73451 co-relation queries the response was YES. [2024-06-28 03:39:46,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 1129 events. 630/1129 cut-off events. For 73451/73451 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5883 event pairs, 82 based on Foata normal form. 2/1129 useless extension candidates. Maximal degree in co-relation 7694. Up to 751 conditions per place. [2024-06-28 03:39:46,815 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 157 selfloop transitions, 120 changer transitions 0/279 dead transitions. [2024-06-28 03:39:46,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 279 transitions, 4064 flow [2024-06-28 03:39:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:46,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:39:46,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:39:46,816 INFO L175 Difference]: Start difference. First operand has 259 places, 265 transitions, 3313 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:39:46,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 279 transitions, 4064 flow [2024-06-28 03:39:47,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 279 transitions, 3918 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:47,041 INFO L231 Difference]: Finished difference. Result has 262 places, 266 transitions, 3432 flow [2024-06-28 03:39:47,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3169, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3432, PETRI_PLACES=262, PETRI_TRANSITIONS=266} [2024-06-28 03:39:47,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:39:47,041 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 266 transitions, 3432 flow [2024-06-28 03:39:47,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:47,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:47,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:39:47,042 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)] === [2024-06-28 03:39:47,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1924423589, now seen corresponding path program 10 times [2024-06-28 03:39:47,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:47,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409519750] [2024-06-28 03:39:47,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:47,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:47,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:47,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409519750] [2024-06-28 03:39:47,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409519750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:47,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:47,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917879100] [2024-06-28 03:39:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:47,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:47,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:47,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 266 transitions, 3432 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:47,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:48,101 INFO L124 PetriNetUnfolderBase]: 634/1136 cut-off events. [2024-06-28 03:39:48,101 INFO L125 PetriNetUnfolderBase]: For 73733/73735 co-relation queries the response was YES. [2024-06-28 03:39:48,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8039 conditions, 1136 events. 634/1136 cut-off events. For 73733/73735 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5939 event pairs, 59 based on Foata normal form. 4/1138 useless extension candidates. Maximal degree in co-relation 7920. Up to 710 conditions per place. [2024-06-28 03:39:48,111 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 109 changer transitions 0/284 dead transitions. [2024-06-28 03:39:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 284 transitions, 4205 flow [2024-06-28 03:39:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:48,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:39:48,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:48,112 INFO L175 Difference]: Start difference. First operand has 262 places, 266 transitions, 3432 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:39:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 284 transitions, 4205 flow [2024-06-28 03:39:48,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 284 transitions, 3898 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:39:48,376 INFO L231 Difference]: Finished difference. Result has 262 places, 267 transitions, 3360 flow [2024-06-28 03:39:48,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3360, PETRI_PLACES=262, PETRI_TRANSITIONS=267} [2024-06-28 03:39:48,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 03:39:48,376 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 267 transitions, 3360 flow [2024-06-28 03:39:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:48,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:48,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:39:48,377 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)] === [2024-06-28 03:39:48,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1924303619, now seen corresponding path program 11 times [2024-06-28 03:39:48,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113954135] [2024-06-28 03:39:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:49,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113954135] [2024-06-28 03:39:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113954135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:49,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:49,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:49,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97867663] [2024-06-28 03:39:49,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:49,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:49,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:49,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:49,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:49,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:49,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 267 transitions, 3360 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) [2024-06-28 03:39:49,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:49,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:49,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:49,723 INFO L124 PetriNetUnfolderBase]: 638/1144 cut-off events. [2024-06-28 03:39:49,724 INFO L125 PetriNetUnfolderBase]: For 73522/73524 co-relation queries the response was YES. [2024-06-28 03:39:49,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1144 events. 638/1144 cut-off events. For 73522/73524 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6006 event pairs, 83 based on Foata normal form. 4/1146 useless extension candidates. Maximal degree in co-relation 7790. Up to 837 conditions per place. [2024-06-28 03:39:49,733 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 165 selfloop transitions, 115 changer transitions 0/282 dead transitions. [2024-06-28 03:39:49,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 282 transitions, 3973 flow [2024-06-28 03:39:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:39:49,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:39:49,735 INFO L175 Difference]: Start difference. First operand has 262 places, 267 transitions, 3360 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:39:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 282 transitions, 3973 flow [2024-06-28 03:39:49,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 282 transitions, 3641 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:49,983 INFO L231 Difference]: Finished difference. Result has 263 places, 268 transitions, 3278 flow [2024-06-28 03:39:49,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3278, PETRI_PLACES=263, PETRI_TRANSITIONS=268} [2024-06-28 03:39:49,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 03:39:49,983 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 268 transitions, 3278 flow [2024-06-28 03:39:49,983 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) [2024-06-28 03:39:49,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:49,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:49,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:39:49,984 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)] === [2024-06-28 03:39:49,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1924308269, now seen corresponding path program 12 times [2024-06-28 03:39:49,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:49,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700500381] [2024-06-28 03:39:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:49,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:50,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700500381] [2024-06-28 03:39:50,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700500381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:50,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:50,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:50,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129534325] [2024-06-28 03:39:50,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:50,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:50,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:50,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:50,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:50,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 268 transitions, 3278 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:50,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:50,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:51,040 INFO L124 PetriNetUnfolderBase]: 642/1152 cut-off events. [2024-06-28 03:39:51,041 INFO L125 PetriNetUnfolderBase]: For 75191/75193 co-relation queries the response was YES. [2024-06-28 03:39:51,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 1152 events. 642/1152 cut-off events. For 75191/75193 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6062 event pairs, 81 based on Foata normal form. 4/1154 useless extension candidates. Maximal degree in co-relation 7617. Up to 829 conditions per place. [2024-06-28 03:39:51,056 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 169 selfloop transitions, 113 changer transitions 0/284 dead transitions. [2024-06-28 03:39:51,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 284 transitions, 3895 flow [2024-06-28 03:39:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:51,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 03:39:51,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:39:51,057 INFO L175 Difference]: Start difference. First operand has 263 places, 268 transitions, 3278 flow. Second operand 9 states and 108 transitions. [2024-06-28 03:39:51,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 284 transitions, 3895 flow [2024-06-28 03:39:51,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 284 transitions, 3662 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:51,317 INFO L231 Difference]: Finished difference. Result has 265 places, 269 transitions, 3288 flow [2024-06-28 03:39:51,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3045, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3288, PETRI_PLACES=265, PETRI_TRANSITIONS=269} [2024-06-28 03:39:51,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 03:39:51,318 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 269 transitions, 3288 flow [2024-06-28 03:39:51,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:51,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:39:51,318 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)] === [2024-06-28 03:39:51,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1753601189, now seen corresponding path program 13 times [2024-06-28 03:39:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506310165] [2024-06-28 03:39:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:52,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:52,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506310165] [2024-06-28 03:39:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506310165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:52,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:52,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27817633] [2024-06-28 03:39:52,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:52,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:52,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:52,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:52,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 269 transitions, 3288 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) [2024-06-28 03:39:52,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:52,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,881 INFO L124 PetriNetUnfolderBase]: 652/1171 cut-off events. [2024-06-28 03:39:52,881 INFO L125 PetriNetUnfolderBase]: For 77256/77256 co-relation queries the response was YES. [2024-06-28 03:39:52,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7865 conditions, 1171 events. 652/1171 cut-off events. For 77256/77256 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6145 event pairs, 88 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 7746. Up to 861 conditions per place. [2024-06-28 03:39:52,892 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 163 selfloop transitions, 122 changer transitions 0/287 dead transitions. [2024-06-28 03:39:52,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 287 transitions, 3953 flow [2024-06-28 03:39:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:39:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:39:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:39:52,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:39:52,893 INFO L175 Difference]: Start difference. First operand has 265 places, 269 transitions, 3288 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:39:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 287 transitions, 3953 flow [2024-06-28 03:39:53,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 287 transitions, 3713 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:53,237 INFO L231 Difference]: Finished difference. Result has 269 places, 274 transitions, 3364 flow [2024-06-28 03:39:53,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3364, PETRI_PLACES=269, PETRI_TRANSITIONS=274} [2024-06-28 03:39:53,237 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 03:39:53,238 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 274 transitions, 3364 flow [2024-06-28 03:39:53,238 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) [2024-06-28 03:39:53,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:53,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:39:53,238 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)] === [2024-06-28 03:39:53,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1753601003, now seen corresponding path program 5 times [2024-06-28 03:39:53,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301720889] [2024-06-28 03:39:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:54,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301720889] [2024-06-28 03:39:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301720889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:54,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:54,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154122436] [2024-06-28 03:39:54,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:54,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:54,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:54,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:54,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 274 transitions, 3364 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:54,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,715 INFO L124 PetriNetUnfolderBase]: 704/1257 cut-off events. [2024-06-28 03:39:54,715 INFO L125 PetriNetUnfolderBase]: For 85430/85430 co-relation queries the response was YES. [2024-06-28 03:39:54,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 1257 events. 704/1257 cut-off events. For 85430/85430 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6696 event pairs, 135 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 8300. Up to 923 conditions per place. [2024-06-28 03:39:54,726 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 216 selfloop transitions, 93 changer transitions 0/311 dead transitions. [2024-06-28 03:39:54,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 311 transitions, 4388 flow [2024-06-28 03:39:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:39:54,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:39:54,727 INFO L175 Difference]: Start difference. First operand has 269 places, 274 transitions, 3364 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:39:54,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 311 transitions, 4388 flow [2024-06-28 03:39:54,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 311 transitions, 4199 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:54,989 INFO L231 Difference]: Finished difference. Result has 274 places, 295 transitions, 3687 flow [2024-06-28 03:39:54,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3687, PETRI_PLACES=274, PETRI_TRANSITIONS=295} [2024-06-28 03:39:54,990 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 03:39:54,990 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 295 transitions, 3687 flow [2024-06-28 03:39:54,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:54,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:39:54,990 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)] === [2024-06-28 03:39:54,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1753605839, now seen corresponding path program 14 times [2024-06-28 03:39:54,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669661726] [2024-06-28 03:39:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669661726] [2024-06-28 03:39:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669661726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:55,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047014552] [2024-06-28 03:39:55,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:55,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:55,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:55,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:55,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 295 transitions, 3687 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:55,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,178 INFO L124 PetriNetUnfolderBase]: 708/1264 cut-off events. [2024-06-28 03:39:56,178 INFO L125 PetriNetUnfolderBase]: For 87866/87868 co-relation queries the response was YES. [2024-06-28 03:39:56,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8685 conditions, 1264 events. 708/1264 cut-off events. For 87866/87868 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6757 event pairs, 57 based on Foata normal form. 4/1266 useless extension candidates. Maximal degree in co-relation 8562. Up to 927 conditions per place. [2024-06-28 03:39:56,189 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 203 selfloop transitions, 109 changer transitions 0/314 dead transitions. [2024-06-28 03:39:56,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 314 transitions, 4536 flow [2024-06-28 03:39:56,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:56,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:56,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 03:39:56,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 03:39:56,190 INFO L175 Difference]: Start difference. First operand has 274 places, 295 transitions, 3687 flow. Second operand 9 states and 112 transitions. [2024-06-28 03:39:56,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 314 transitions, 4536 flow [2024-06-28 03:39:56,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 314 transitions, 4513 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:56,506 INFO L231 Difference]: Finished difference. Result has 280 places, 296 transitions, 3903 flow [2024-06-28 03:39:56,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3664, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3903, PETRI_PLACES=280, PETRI_TRANSITIONS=296} [2024-06-28 03:39:56,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:39:56,506 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 296 transitions, 3903 flow [2024-06-28 03:39:56,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:39:56,507 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)] === [2024-06-28 03:39:56,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1753428023, now seen corresponding path program 6 times [2024-06-28 03:39:56,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896626538] [2024-06-28 03:39:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896626538] [2024-06-28 03:39:57,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896626538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:57,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200530483] [2024-06-28 03:39:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:57,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:57,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:57,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 296 transitions, 3903 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) [2024-06-28 03:39:57,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:57,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,089 INFO L124 PetriNetUnfolderBase]: 740/1317 cut-off events. [2024-06-28 03:39:58,089 INFO L125 PetriNetUnfolderBase]: For 110368/110368 co-relation queries the response was YES. [2024-06-28 03:39:58,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9507 conditions, 1317 events. 740/1317 cut-off events. For 110368/110368 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7069 event pairs, 77 based on Foata normal form. 4/1319 useless extension candidates. Maximal degree in co-relation 9382. Up to 966 conditions per place. [2024-06-28 03:39:58,102 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 100 changer transitions 0/322 dead transitions. [2024-06-28 03:39:58,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 322 transitions, 4841 flow [2024-06-28 03:39:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:39:58,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:39:58,103 INFO L175 Difference]: Start difference. First operand has 280 places, 296 transitions, 3903 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:39:58,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 322 transitions, 4841 flow [2024-06-28 03:39:58,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 322 transitions, 4611 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:58,514 INFO L231 Difference]: Finished difference. Result has 283 places, 304 transitions, 3973 flow [2024-06-28 03:39:58,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3973, PETRI_PLACES=283, PETRI_TRANSITIONS=304} [2024-06-28 03:39:58,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 03:39:58,514 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 304 transitions, 3973 flow [2024-06-28 03:39:58,514 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) [2024-06-28 03:39:58,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:58,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:58,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:39:58,515 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)] === [2024-06-28 03:39:58,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1753428209, now seen corresponding path program 15 times [2024-06-28 03:39:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:58,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683566308] [2024-06-28 03:39:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683566308] [2024-06-28 03:39:59,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683566308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:39:59,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638636657] [2024-06-28 03:39:59,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:39:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:39:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:39:59,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:59,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 304 transitions, 3973 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) [2024-06-28 03:39:59,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:59,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:59,947 INFO L124 PetriNetUnfolderBase]: 744/1325 cut-off events. [2024-06-28 03:39:59,947 INFO L125 PetriNetUnfolderBase]: For 106573/106573 co-relation queries the response was YES. [2024-06-28 03:39:59,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9595 conditions, 1325 events. 744/1325 cut-off events. For 106573/106573 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7121 event pairs, 90 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 9469. Up to 1158 conditions per place. [2024-06-28 03:39:59,960 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 252 selfloop transitions, 63 changer transitions 0/317 dead transitions. [2024-06-28 03:39:59,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 317 transitions, 4646 flow [2024-06-28 03:39:59,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:39:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:39:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:39:59,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:39:59,961 INFO L175 Difference]: Start difference. First operand has 283 places, 304 transitions, 3973 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:39:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 317 transitions, 4646 flow [2024-06-28 03:40:00,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 317 transitions, 4549 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:00,549 INFO L231 Difference]: Finished difference. Result has 288 places, 305 transitions, 4024 flow [2024-06-28 03:40:00,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3876, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4024, PETRI_PLACES=288, PETRI_TRANSITIONS=305} [2024-06-28 03:40:00,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:40:00,550 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 305 transitions, 4024 flow [2024-06-28 03:40:00,550 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) [2024-06-28 03:40:00,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:00,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:40:00,551 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)] === [2024-06-28 03:40:00,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:00,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1919655293, now seen corresponding path program 7 times [2024-06-28 03:40:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:00,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463059710] [2024-06-28 03:40:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:01,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:01,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463059710] [2024-06-28 03:40:01,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463059710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:01,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:01,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184917147] [2024-06-28 03:40:01,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:01,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:01,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 305 transitions, 4024 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) [2024-06-28 03:40:01,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:01,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:01,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,226 INFO L124 PetriNetUnfolderBase]: 756/1344 cut-off events. [2024-06-28 03:40:02,226 INFO L125 PetriNetUnfolderBase]: For 115400/115402 co-relation queries the response was YES. [2024-06-28 03:40:02,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9807 conditions, 1344 events. 756/1344 cut-off events. For 115400/115402 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7256 event pairs, 74 based on Foata normal form. 6/1348 useless extension candidates. Maximal degree in co-relation 9679. Up to 1018 conditions per place. [2024-06-28 03:40:02,239 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 220 selfloop transitions, 105 changer transitions 0/327 dead transitions. [2024-06-28 03:40:02,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 327 transitions, 4780 flow [2024-06-28 03:40:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:02,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:02,240 INFO L175 Difference]: Start difference. First operand has 288 places, 305 transitions, 4024 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 327 transitions, 4780 flow [2024-06-28 03:40:02,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 327 transitions, 4645 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:02,687 INFO L231 Difference]: Finished difference. Result has 290 places, 309 transitions, 4165 flow [2024-06-28 03:40:02,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4165, PETRI_PLACES=290, PETRI_TRANSITIONS=309} [2024-06-28 03:40:02,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:40:02,687 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 309 transitions, 4165 flow [2024-06-28 03:40:02,687 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) [2024-06-28 03:40:02,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:40:02,688 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)] === [2024-06-28 03:40:02,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1753421513, now seen corresponding path program 8 times [2024-06-28 03:40:02,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079727559] [2024-06-28 03:40:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079727559] [2024-06-28 03:40:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079727559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:03,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250108846] [2024-06-28 03:40:03,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:03,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:03,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:03,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 309 transitions, 4165 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) [2024-06-28 03:40:03,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:03,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,182 INFO L124 PetriNetUnfolderBase]: 748/1333 cut-off events. [2024-06-28 03:40:04,183 INFO L125 PetriNetUnfolderBase]: For 104565/104565 co-relation queries the response was YES. [2024-06-28 03:40:04,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 1333 events. 748/1333 cut-off events. For 104565/104565 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7223 event pairs, 77 based on Foata normal form. 4/1335 useless extension candidates. Maximal degree in co-relation 9458. Up to 1006 conditions per place. [2024-06-28 03:40:04,196 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 229 selfloop transitions, 94 changer transitions 0/325 dead transitions. [2024-06-28 03:40:04,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 325 transitions, 4857 flow [2024-06-28 03:40:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:04,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-28 03:40:04,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-28 03:40:04,197 INFO L175 Difference]: Start difference. First operand has 290 places, 309 transitions, 4165 flow. Second operand 10 states and 118 transitions. [2024-06-28 03:40:04,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 325 transitions, 4857 flow [2024-06-28 03:40:04,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 325 transitions, 4527 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:04,603 INFO L231 Difference]: Finished difference. Result has 291 places, 309 transitions, 4031 flow [2024-06-28 03:40:04,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4031, PETRI_PLACES=291, PETRI_TRANSITIONS=309} [2024-06-28 03:40:04,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2024-06-28 03:40:04,604 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 309 transitions, 4031 flow [2024-06-28 03:40:04,604 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) [2024-06-28 03:40:04,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:04,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:40:04,604 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)] === [2024-06-28 03:40:04,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash -643247119, now seen corresponding path program 1 times [2024-06-28 03:40:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161521038] [2024-06-28 03:40:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161521038] [2024-06-28 03:40:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161521038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:05,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616061711] [2024-06-28 03:40:05,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:05,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:05,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:05,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 309 transitions, 4031 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) [2024-06-28 03:40:05,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:05,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,483 INFO L124 PetriNetUnfolderBase]: 772/1385 cut-off events. [2024-06-28 03:40:06,483 INFO L125 PetriNetUnfolderBase]: For 142575/142575 co-relation queries the response was YES. [2024-06-28 03:40:06,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9681 conditions, 1385 events. 772/1385 cut-off events. For 142575/142575 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7573 event pairs, 116 based on Foata normal form. 14/1397 useless extension candidates. Maximal degree in co-relation 9551. Up to 693 conditions per place. [2024-06-28 03:40:06,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 139 changer transitions 10/331 dead transitions. [2024-06-28 03:40:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 331 transitions, 4945 flow [2024-06-28 03:40:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 03:40:06,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 03:40:06,498 INFO L175 Difference]: Start difference. First operand has 291 places, 309 transitions, 4031 flow. Second operand 10 states and 129 transitions. [2024-06-28 03:40:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 331 transitions, 4945 flow [2024-06-28 03:40:06,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 331 transitions, 4747 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:06,923 INFO L231 Difference]: Finished difference. Result has 292 places, 305 transitions, 4089 flow [2024-06-28 03:40:06,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4089, PETRI_PLACES=292, PETRI_TRANSITIONS=305} [2024-06-28 03:40:06,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 03:40:06,924 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 305 transitions, 4089 flow [2024-06-28 03:40:06,924 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) [2024-06-28 03:40:06,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:40:06,924 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)] === [2024-06-28 03:40:06,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1746934763, now seen corresponding path program 9 times [2024-06-28 03:40:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123416071] [2024-06-28 03:40:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:08,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:08,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123416071] [2024-06-28 03:40:08,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123416071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:08,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:08,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:08,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312147807] [2024-06-28 03:40:08,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:08,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:08,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:08,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:08,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:08,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 305 transitions, 4089 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) [2024-06-28 03:40:08,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:08,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:08,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,834 INFO L124 PetriNetUnfolderBase]: 754/1351 cut-off events. [2024-06-28 03:40:08,835 INFO L125 PetriNetUnfolderBase]: For 109773/109773 co-relation queries the response was YES. [2024-06-28 03:40:08,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9757 conditions, 1351 events. 754/1351 cut-off events. For 109773/109773 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7373 event pairs, 78 based on Foata normal form. 4/1353 useless extension candidates. Maximal degree in co-relation 9626. Up to 1024 conditions per place. [2024-06-28 03:40:08,846 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 100 changer transitions 0/324 dead transitions. [2024-06-28 03:40:08,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 324 transitions, 4841 flow [2024-06-28 03:40:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:08,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:40:08,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:08,847 INFO L175 Difference]: Start difference. First operand has 292 places, 305 transitions, 4089 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:40:08,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 324 transitions, 4841 flow [2024-06-28 03:40:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 324 transitions, 4521 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:09,229 INFO L231 Difference]: Finished difference. Result has 292 places, 309 transitions, 4051 flow [2024-06-28 03:40:09,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3777, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4051, PETRI_PLACES=292, PETRI_TRANSITIONS=309} [2024-06-28 03:40:09,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 03:40:09,230 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 309 transitions, 4051 flow [2024-06-28 03:40:09,230 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) [2024-06-28 03:40:09,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:40:09,230 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)] === [2024-06-28 03:40:09,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1919834969, now seen corresponding path program 16 times [2024-06-28 03:40:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943009555] [2024-06-28 03:40:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943009555] [2024-06-28 03:40:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943009555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:10,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82328880] [2024-06-28 03:40:10,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:10,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:10,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 309 transitions, 4051 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) [2024-06-28 03:40:10,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,828 INFO L124 PetriNetUnfolderBase]: 761/1363 cut-off events. [2024-06-28 03:40:10,828 INFO L125 PetriNetUnfolderBase]: For 101859/101861 co-relation queries the response was YES. [2024-06-28 03:40:10,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9703 conditions, 1363 events. 761/1363 cut-off events. For 101859/101861 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 7482 event pairs, 102 based on Foata normal form. 4/1365 useless extension candidates. Maximal degree in co-relation 9572. Up to 1045 conditions per place. [2024-06-28 03:40:10,841 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 203 selfloop transitions, 123 changer transitions 0/328 dead transitions. [2024-06-28 03:40:10,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 328 transitions, 4793 flow [2024-06-28 03:40:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:40:10,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:40:10,842 INFO L175 Difference]: Start difference. First operand has 292 places, 309 transitions, 4051 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:40:10,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 328 transitions, 4793 flow [2024-06-28 03:40:11,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 328 transitions, 4569 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:11,302 INFO L231 Difference]: Finished difference. Result has 295 places, 312 transitions, 4129 flow [2024-06-28 03:40:11,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3827, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4129, PETRI_PLACES=295, PETRI_TRANSITIONS=312} [2024-06-28 03:40:11,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 03:40:11,303 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 312 transitions, 4129 flow [2024-06-28 03:40:11,303 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) [2024-06-28 03:40:11,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:11,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:40:11,304 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)] === [2024-06-28 03:40:11,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1747165403, now seen corresponding path program 10 times [2024-06-28 03:40:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783024933] [2024-06-28 03:40:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783024933] [2024-06-28 03:40:12,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783024933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:12,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710306272] [2024-06-28 03:40:12,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:12,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:12,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:12,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:12,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 312 transitions, 4129 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) [2024-06-28 03:40:12,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:12,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:12,974 INFO L124 PetriNetUnfolderBase]: 791/1414 cut-off events. [2024-06-28 03:40:12,974 INFO L125 PetriNetUnfolderBase]: For 104636/104636 co-relation queries the response was YES. [2024-06-28 03:40:12,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9906 conditions, 1414 events. 791/1414 cut-off events. For 104636/104636 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7789 event pairs, 166 based on Foata normal form. 2/1414 useless extension candidates. Maximal degree in co-relation 9774. Up to 998 conditions per place. [2024-06-28 03:40:12,986 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 233 selfloop transitions, 103 changer transitions 0/338 dead transitions. [2024-06-28 03:40:12,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 338 transitions, 5101 flow [2024-06-28 03:40:12,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:40:12,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:40:12,988 INFO L175 Difference]: Start difference. First operand has 295 places, 312 transitions, 4129 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:40:12,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 338 transitions, 5101 flow [2024-06-28 03:40:13,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 338 transitions, 4891 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:13,407 INFO L231 Difference]: Finished difference. Result has 300 places, 322 transitions, 4323 flow [2024-06-28 03:40:13,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3921, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4323, PETRI_PLACES=300, PETRI_TRANSITIONS=322} [2024-06-28 03:40:13,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-28 03:40:13,408 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 322 transitions, 4323 flow [2024-06-28 03:40:13,408 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) [2024-06-28 03:40:13,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:13,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:13,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:40:13,408 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)] === [2024-06-28 03:40:13,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:13,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1747172099, now seen corresponding path program 17 times [2024-06-28 03:40:13,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:13,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291141102] [2024-06-28 03:40:13,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:13,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291141102] [2024-06-28 03:40:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291141102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:14,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476600317] [2024-06-28 03:40:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:14,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:14,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:14,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 322 transitions, 4323 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) [2024-06-28 03:40:14,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:14,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:14,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,152 INFO L124 PetriNetUnfolderBase]: 795/1422 cut-off events. [2024-06-28 03:40:15,152 INFO L125 PetriNetUnfolderBase]: For 105169/105169 co-relation queries the response was YES. [2024-06-28 03:40:15,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10161 conditions, 1422 events. 795/1422 cut-off events. For 105169/105169 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7873 event pairs, 98 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 10026. Up to 1255 conditions per place. [2024-06-28 03:40:15,167 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 268 selfloop transitions, 65 changer transitions 0/335 dead transitions. [2024-06-28 03:40:15,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 335 transitions, 5034 flow [2024-06-28 03:40:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:15,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:15,168 INFO L175 Difference]: Start difference. First operand has 300 places, 322 transitions, 4323 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 335 transitions, 5034 flow [2024-06-28 03:40:15,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 335 transitions, 4932 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:15,680 INFO L231 Difference]: Finished difference. Result has 305 places, 323 transitions, 4375 flow [2024-06-28 03:40:15,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4221, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4375, PETRI_PLACES=305, PETRI_TRANSITIONS=323} [2024-06-28 03:40:15,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 03:40:15,680 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 323 transitions, 4375 flow [2024-06-28 03:40:15,680 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) [2024-06-28 03:40:15,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:40:15,681 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)] === [2024-06-28 03:40:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash -815983087, now seen corresponding path program 11 times [2024-06-28 03:40:15,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104862020] [2024-06-28 03:40:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104862020] [2024-06-28 03:40:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104862020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108940444] [2024-06-28 03:40:16,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:16,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:16,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:16,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 323 transitions, 4375 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) [2024-06-28 03:40:16,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:16,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:17,488 INFO L124 PetriNetUnfolderBase]: 807/1441 cut-off events. [2024-06-28 03:40:17,489 INFO L125 PetriNetUnfolderBase]: For 115796/115798 co-relation queries the response was YES. [2024-06-28 03:40:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 1441 events. 807/1441 cut-off events. For 115796/115798 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8012 event pairs, 98 based on Foata normal form. 6/1445 useless extension candidates. Maximal degree in co-relation 10141. Up to 781 conditions per place. [2024-06-28 03:40:17,503 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 168 changer transitions 0/348 dead transitions. [2024-06-28 03:40:17,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 348 transitions, 5377 flow [2024-06-28 03:40:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:40:17,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:40:17,504 INFO L175 Difference]: Start difference. First operand has 305 places, 323 transitions, 4375 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:40:17,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 348 transitions, 5377 flow [2024-06-28 03:40:17,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 348 transitions, 5236 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:17,959 INFO L231 Difference]: Finished difference. Result has 308 places, 327 transitions, 4648 flow [2024-06-28 03:40:17,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4234, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4648, PETRI_PLACES=308, PETRI_TRANSITIONS=327} [2024-06-28 03:40:17,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 03:40:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 327 transitions, 4648 flow [2024-06-28 03:40:17,959 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) [2024-06-28 03:40:17,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:17,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:40:17,960 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)] === [2024-06-28 03:40:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash -643493197, now seen corresponding path program 12 times [2024-06-28 03:40:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25731122] [2024-06-28 03:40:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:18,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:18,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:18,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25731122] [2024-06-28 03:40:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25731122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107030838] [2024-06-28 03:40:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:18,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:18,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:18,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 327 transitions, 4648 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) [2024-06-28 03:40:18,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:18,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:19,528 INFO L124 PetriNetUnfolderBase]: 829/1478 cut-off events. [2024-06-28 03:40:19,528 INFO L125 PetriNetUnfolderBase]: For 127895/127895 co-relation queries the response was YES. [2024-06-28 03:40:19,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10986 conditions, 1478 events. 829/1478 cut-off events. For 127895/127895 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8219 event pairs, 78 based on Foata normal form. 4/1480 useless extension candidates. Maximal degree in co-relation 10850. Up to 1114 conditions per place. [2024-06-28 03:40:19,552 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 242 selfloop transitions, 106 changer transitions 0/350 dead transitions. [2024-06-28 03:40:19,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 350 transitions, 5686 flow [2024-06-28 03:40:19,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:19,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 03:40:19,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 03:40:19,553 INFO L175 Difference]: Start difference. First operand has 308 places, 327 transitions, 4648 flow. Second operand 10 states and 119 transitions. [2024-06-28 03:40:19,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 350 transitions, 5686 flow [2024-06-28 03:40:20,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 350 transitions, 5292 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:20,147 INFO L231 Difference]: Finished difference. Result has 309 places, 333 transitions, 4598 flow [2024-06-28 03:40:20,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4598, PETRI_PLACES=309, PETRI_TRANSITIONS=333} [2024-06-28 03:40:20,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 03:40:20,147 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 333 transitions, 4598 flow [2024-06-28 03:40:20,148 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) [2024-06-28 03:40:20,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:20,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:40:20,148 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)] === [2024-06-28 03:40:20,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -815983273, now seen corresponding path program 18 times [2024-06-28 03:40:20,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315480314] [2024-06-28 03:40:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315480314] [2024-06-28 03:40:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315480314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008461487] [2024-06-28 03:40:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:21,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:21,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 333 transitions, 4598 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) [2024-06-28 03:40:21,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,640 INFO L124 PetriNetUnfolderBase]: 833/1485 cut-off events. [2024-06-28 03:40:21,640 INFO L125 PetriNetUnfolderBase]: For 121296/121298 co-relation queries the response was YES. [2024-06-28 03:40:21,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10869 conditions, 1485 events. 833/1485 cut-off events. For 121296/121298 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8289 event pairs, 109 based on Foata normal form. 4/1487 useless extension candidates. Maximal degree in co-relation 10732. Up to 1167 conditions per place. [2024-06-28 03:40:21,655 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 226 selfloop transitions, 121 changer transitions 0/349 dead transitions. [2024-06-28 03:40:21,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 349 transitions, 5353 flow [2024-06-28 03:40:21,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:40:21,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:21,657 INFO L175 Difference]: Start difference. First operand has 309 places, 333 transitions, 4598 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:40:21,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 349 transitions, 5353 flow [2024-06-28 03:40:22,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 349 transitions, 5193 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:22,241 INFO L231 Difference]: Finished difference. Result has 313 places, 334 transitions, 4709 flow [2024-06-28 03:40:22,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4438, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4709, PETRI_PLACES=313, PETRI_TRANSITIONS=334} [2024-06-28 03:40:22,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 03:40:22,242 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 334 transitions, 4709 flow [2024-06-28 03:40:22,242 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) [2024-06-28 03:40:22,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:40:22,243 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)] === [2024-06-28 03:40:22,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2035332653, now seen corresponding path program 2 times [2024-06-28 03:40:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243629601] [2024-06-28 03:40:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:23,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:23,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243629601] [2024-06-28 03:40:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243629601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:23,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:23,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095165160] [2024-06-28 03:40:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:23,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:23,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:23,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:23,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:23,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 334 transitions, 4709 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) [2024-06-28 03:40:23,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:23,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:23,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,050 INFO L124 PetriNetUnfolderBase]: 837/1494 cut-off events. [2024-06-28 03:40:24,051 INFO L125 PetriNetUnfolderBase]: For 124126/124126 co-relation queries the response was YES. [2024-06-28 03:40:24,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11075 conditions, 1494 events. 837/1494 cut-off events. For 124126/124126 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 8369 event pairs, 176 based on Foata normal form. 2/1494 useless extension candidates. Maximal degree in co-relation 10936. Up to 1417 conditions per place. [2024-06-28 03:40:24,067 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 314 selfloop transitions, 31 changer transitions 0/347 dead transitions. [2024-06-28 03:40:24,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 347 transitions, 5443 flow [2024-06-28 03:40:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:40:24,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:40:24,068 INFO L175 Difference]: Start difference. First operand has 313 places, 334 transitions, 4709 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:40:24,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 347 transitions, 5443 flow [2024-06-28 03:40:24,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 347 transitions, 5193 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:24,626 INFO L231 Difference]: Finished difference. Result has 315 places, 335 transitions, 4541 flow [2024-06-28 03:40:24,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4459, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4541, PETRI_PLACES=315, PETRI_TRANSITIONS=335} [2024-06-28 03:40:24,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:40:24,627 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 335 transitions, 4541 flow [2024-06-28 03:40:24,627 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) [2024-06-28 03:40:24,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:40:24,627 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)] === [2024-06-28 03:40:24,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1150724687, now seen corresponding path program 13 times [2024-06-28 03:40:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108914013] [2024-06-28 03:40:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:25,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108914013] [2024-06-28 03:40:25,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108914013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:25,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640939771] [2024-06-28 03:40:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:25,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:25,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 335 transitions, 4541 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) [2024-06-28 03:40:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:26,297 INFO L124 PetriNetUnfolderBase]: 853/1520 cut-off events. [2024-06-28 03:40:26,298 INFO L125 PetriNetUnfolderBase]: For 134650/134650 co-relation queries the response was YES. [2024-06-28 03:40:26,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11274 conditions, 1520 events. 853/1520 cut-off events. For 134650/134650 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8522 event pairs, 184 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 11134. Up to 1429 conditions per place. [2024-06-28 03:40:26,313 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 319 selfloop transitions, 32 changer transitions 0/353 dead transitions. [2024-06-28 03:40:26,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 353 transitions, 5545 flow [2024-06-28 03:40:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:40:26,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:40:26,316 INFO L175 Difference]: Start difference. First operand has 315 places, 335 transitions, 4541 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:40:26,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 353 transitions, 5545 flow [2024-06-28 03:40:27,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 353 transitions, 5473 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:27,098 INFO L231 Difference]: Finished difference. Result has 317 places, 339 transitions, 4622 flow [2024-06-28 03:40:27,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4469, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4622, PETRI_PLACES=317, PETRI_TRANSITIONS=339} [2024-06-28 03:40:27,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:40:27,099 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 339 transitions, 4622 flow [2024-06-28 03:40:27,099 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) [2024-06-28 03:40:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:27,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:27,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:40:27,099 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)] === [2024-06-28 03:40:27,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2065905863, now seen corresponding path program 19 times [2024-06-28 03:40:27,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320249507] [2024-06-28 03:40:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:27,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320249507] [2024-06-28 03:40:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320249507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:27,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486332123] [2024-06-28 03:40:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:27,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:28,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:28,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 339 transitions, 4622 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) [2024-06-28 03:40:28,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:28,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:28,561 INFO L124 PetriNetUnfolderBase]: 857/1528 cut-off events. [2024-06-28 03:40:28,561 INFO L125 PetriNetUnfolderBase]: For 137651/137651 co-relation queries the response was YES. [2024-06-28 03:40:28,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11355 conditions, 1528 events. 857/1528 cut-off events. For 137651/137651 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 8575 event pairs, 187 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 11214. Up to 1484 conditions per place. [2024-06-28 03:40:28,579 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 326 selfloop transitions, 22 changer transitions 0/350 dead transitions. [2024-06-28 03:40:28,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 350 transitions, 5361 flow [2024-06-28 03:40:28,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:40:28,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:40:28,581 INFO L175 Difference]: Start difference. First operand has 317 places, 339 transitions, 4622 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:40:28,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 350 transitions, 5361 flow [2024-06-28 03:40:29,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 350 transitions, 5301 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:29,285 INFO L231 Difference]: Finished difference. Result has 321 places, 340 transitions, 4633 flow [2024-06-28 03:40:29,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4562, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4633, PETRI_PLACES=321, PETRI_TRANSITIONS=340} [2024-06-28 03:40:29,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 03:40:29,286 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 340 transitions, 4633 flow [2024-06-28 03:40:29,286 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) [2024-06-28 03:40:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:29,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:29,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:40:29,286 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)] === [2024-06-28 03:40:29,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2072161787, now seen corresponding path program 14 times [2024-06-28 03:40:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053114052] [2024-06-28 03:40:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:30,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053114052] [2024-06-28 03:40:30,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053114052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:30,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:30,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:30,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516664497] [2024-06-28 03:40:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:30,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:30,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:30,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 340 transitions, 4633 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) [2024-06-28 03:40:30,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:30,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:30,812 INFO L124 PetriNetUnfolderBase]: 873/1554 cut-off events. [2024-06-28 03:40:30,813 INFO L125 PetriNetUnfolderBase]: For 149450/149450 co-relation queries the response was YES. [2024-06-28 03:40:30,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11769 conditions, 1554 events. 873/1554 cut-off events. For 149450/149450 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 8755 event pairs, 187 based on Foata normal form. 2/1554 useless extension candidates. Maximal degree in co-relation 11626. Up to 1467 conditions per place. [2024-06-28 03:40:30,830 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 325 selfloop transitions, 33 changer transitions 0/360 dead transitions. [2024-06-28 03:40:30,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 360 transitions, 5669 flow [2024-06-28 03:40:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:30,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:30,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:40:30,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:40:30,831 INFO L175 Difference]: Start difference. First operand has 321 places, 340 transitions, 4633 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:40:30,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 360 transitions, 5669 flow [2024-06-28 03:40:31,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 360 transitions, 5609 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:31,613 INFO L231 Difference]: Finished difference. Result has 324 places, 344 transitions, 4736 flow [2024-06-28 03:40:31,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4573, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4736, PETRI_PLACES=324, PETRI_TRANSITIONS=344} [2024-06-28 03:40:31,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-28 03:40:31,614 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 344 transitions, 4736 flow [2024-06-28 03:40:31,614 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) [2024-06-28 03:40:31,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:31,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:31,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:40:31,615 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)] === [2024-06-28 03:40:31,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2072334953, now seen corresponding path program 20 times [2024-06-28 03:40:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915552951] [2024-06-28 03:40:31,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:31,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915552951] [2024-06-28 03:40:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915552951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852619645] [2024-06-28 03:40:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:32,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 344 transitions, 4736 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:32,899 INFO L124 PetriNetUnfolderBase]: 877/1561 cut-off events. [2024-06-28 03:40:32,899 INFO L125 PetriNetUnfolderBase]: For 152496/152498 co-relation queries the response was YES. [2024-06-28 03:40:32,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11871 conditions, 1561 events. 877/1561 cut-off events. For 152496/152498 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8829 event pairs, 106 based on Foata normal form. 4/1563 useless extension candidates. Maximal degree in co-relation 11727. Up to 1308 conditions per place. [2024-06-28 03:40:32,916 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 248 selfloop transitions, 111 changer transitions 0/361 dead transitions. [2024-06-28 03:40:32,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 361 transitions, 5523 flow [2024-06-28 03:40:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:40:32,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:40:32,918 INFO L175 Difference]: Start difference. First operand has 324 places, 344 transitions, 4736 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:40:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 361 transitions, 5523 flow [2024-06-28 03:40:33,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 361 transitions, 5453 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:33,689 INFO L231 Difference]: Finished difference. Result has 326 places, 345 transitions, 4923 flow [2024-06-28 03:40:33,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4923, PETRI_PLACES=326, PETRI_TRANSITIONS=345} [2024-06-28 03:40:33,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 03:40:33,689 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 345 transitions, 4923 flow [2024-06-28 03:40:33,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:33,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:33,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:33,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:40:33,690 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)] === [2024-06-28 03:40:33,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1590888915, now seen corresponding path program 3 times [2024-06-28 03:40:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:33,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508414602] [2024-06-28 03:40:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:34,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:34,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508414602] [2024-06-28 03:40:34,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508414602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:34,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:34,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:34,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698135108] [2024-06-28 03:40:34,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:34,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:35,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:35,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 345 transitions, 4923 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) [2024-06-28 03:40:35,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:35,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:35,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:35,670 INFO L124 PetriNetUnfolderBase]: 881/1570 cut-off events. [2024-06-28 03:40:35,670 INFO L125 PetriNetUnfolderBase]: For 155804/155804 co-relation queries the response was YES. [2024-06-28 03:40:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12136 conditions, 1570 events. 881/1570 cut-off events. For 155804/155804 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 8870 event pairs, 186 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 11990. Up to 1520 conditions per place. [2024-06-28 03:40:35,687 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 334 selfloop transitions, 22 changer transitions 0/358 dead transitions. [2024-06-28 03:40:35,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 358 transitions, 5681 flow [2024-06-28 03:40:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:40:35,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:40:35,688 INFO L175 Difference]: Start difference. First operand has 326 places, 345 transitions, 4923 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:40:35,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 358 transitions, 5681 flow [2024-06-28 03:40:36,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 358 transitions, 5447 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:36,368 INFO L231 Difference]: Finished difference. Result has 329 places, 346 transitions, 4755 flow [2024-06-28 03:40:36,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4689, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4755, PETRI_PLACES=329, PETRI_TRANSITIONS=346} [2024-06-28 03:40:36,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 03:40:36,369 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 346 transitions, 4755 flow [2024-06-28 03:40:36,369 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) [2024-06-28 03:40:36,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:36,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:40:36,369 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)] === [2024-06-28 03:40:36,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash 128498547, now seen corresponding path program 15 times [2024-06-28 03:40:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675468266] [2024-06-28 03:40:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675468266] [2024-06-28 03:40:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675468266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788120551] [2024-06-28 03:40:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:37,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:37,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 346 transitions, 4755 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) [2024-06-28 03:40:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:37,811 INFO L124 PetriNetUnfolderBase]: 887/1580 cut-off events. [2024-06-28 03:40:37,811 INFO L125 PetriNetUnfolderBase]: For 155661/155661 co-relation queries the response was YES. [2024-06-28 03:40:37,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12006 conditions, 1580 events. 887/1580 cut-off events. For 155661/155661 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8953 event pairs, 187 based on Foata normal form. 2/1580 useless extension candidates. Maximal degree in co-relation 11859. Up to 1524 conditions per place. [2024-06-28 03:40:37,827 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 335 selfloop transitions, 23 changer transitions 0/360 dead transitions. [2024-06-28 03:40:37,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 360 transitions, 5551 flow [2024-06-28 03:40:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:37,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:40:37,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:40:37,828 INFO L175 Difference]: Start difference. First operand has 329 places, 346 transitions, 4755 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:40:37,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 360 transitions, 5551 flow [2024-06-28 03:40:38,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 360 transitions, 5495 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:38,608 INFO L231 Difference]: Finished difference. Result has 331 places, 348 transitions, 4803 flow [2024-06-28 03:40:38,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4699, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4803, PETRI_PLACES=331, PETRI_TRANSITIONS=348} [2024-06-28 03:40:38,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 03:40:38,608 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 348 transitions, 4803 flow [2024-06-28 03:40:38,609 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) [2024-06-28 03:40:38,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:38,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:38,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:40:38,609 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)] === [2024-06-28 03:40:38,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1590642651, now seen corresponding path program 21 times [2024-06-28 03:40:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:38,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892399660] [2024-06-28 03:40:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:39,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892399660] [2024-06-28 03:40:39,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892399660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:39,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:39,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689085420] [2024-06-28 03:40:39,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:39,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:39,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:39,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:39,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:39,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:39,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 348 transitions, 4803 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) [2024-06-28 03:40:39,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:39,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:39,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,050 INFO L124 PetriNetUnfolderBase]: 891/1588 cut-off events. [2024-06-28 03:40:40,050 INFO L125 PetriNetUnfolderBase]: For 158672/158672 co-relation queries the response was YES. [2024-06-28 03:40:40,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12084 conditions, 1588 events. 891/1588 cut-off events. For 158672/158672 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 9024 event pairs, 193 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 11936. Up to 1553 conditions per place. [2024-06-28 03:40:40,069 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 340 selfloop transitions, 17 changer transitions 0/359 dead transitions. [2024-06-28 03:40:40,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 359 transitions, 5562 flow [2024-06-28 03:40:40,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-06-28 03:40:40,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096774193548387 [2024-06-28 03:40:40,070 INFO L175 Difference]: Start difference. First operand has 331 places, 348 transitions, 4803 flow. Second operand 10 states and 96 transitions. [2024-06-28 03:40:40,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 359 transitions, 5562 flow [2024-06-28 03:40:40,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 359 transitions, 5490 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:40,936 INFO L231 Difference]: Finished difference. Result has 333 places, 349 transitions, 4794 flow [2024-06-28 03:40:40,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4731, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4794, PETRI_PLACES=333, PETRI_TRANSITIONS=349} [2024-06-28 03:40:40,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-06-28 03:40:40,937 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 349 transitions, 4794 flow [2024-06-28 03:40:40,937 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) [2024-06-28 03:40:40,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:40,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:40:40,937 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)] === [2024-06-28 03:40:40,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1886464305, now seen corresponding path program 4 times [2024-06-28 03:40:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884518566] [2024-06-28 03:40:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:40,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884518566] [2024-06-28 03:40:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884518566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:41,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682312684] [2024-06-28 03:40:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:41,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:41,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:41,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 349 transitions, 4794 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) [2024-06-28 03:40:41,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:41,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:42,485 INFO L124 PetriNetUnfolderBase]: 895/1596 cut-off events. [2024-06-28 03:40:42,485 INFO L125 PetriNetUnfolderBase]: For 161921/161921 co-relation queries the response was YES. [2024-06-28 03:40:42,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12117 conditions, 1596 events. 895/1596 cut-off events. For 161921/161921 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9062 event pairs, 190 based on Foata normal form. 2/1596 useless extension candidates. Maximal degree in co-relation 11968. Up to 1556 conditions per place. [2024-06-28 03:40:42,503 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 343 selfloop transitions, 16 changer transitions 0/361 dead transitions. [2024-06-28 03:40:42,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 361 transitions, 5554 flow [2024-06-28 03:40:42,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-28 03:40:42,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 03:40:42,504 INFO L175 Difference]: Start difference. First operand has 333 places, 349 transitions, 4794 flow. Second operand 10 states and 95 transitions. [2024-06-28 03:40:42,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 361 transitions, 5554 flow [2024-06-28 03:40:43,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 361 transitions, 5502 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:43,305 INFO L231 Difference]: Finished difference. Result has 335 places, 350 transitions, 4798 flow [2024-06-28 03:40:43,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4742, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4798, PETRI_PLACES=335, PETRI_TRANSITIONS=350} [2024-06-28 03:40:43,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-28 03:40:43,306 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 350 transitions, 4798 flow [2024-06-28 03:40:43,306 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) [2024-06-28 03:40:43,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:43,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:40:43,306 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)] === [2024-06-28 03:40:43,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1144468391, now seen corresponding path program 22 times [2024-06-28 03:40:43,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581127735] [2024-06-28 03:40:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:44,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:44,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581127735] [2024-06-28 03:40:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581127735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:44,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896012628] [2024-06-28 03:40:44,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:44,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:44,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:44,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:44,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:44,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 350 transitions, 4798 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) [2024-06-28 03:40:44,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:44,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:44,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:44,783 INFO L124 PetriNetUnfolderBase]: 892/1591 cut-off events. [2024-06-28 03:40:44,784 INFO L125 PetriNetUnfolderBase]: For 154954/154954 co-relation queries the response was YES. [2024-06-28 03:40:44,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 1591 events. 892/1591 cut-off events. For 154954/154954 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9033 event pairs, 195 based on Foata normal form. 2/1591 useless extension candidates. Maximal degree in co-relation 11740. Up to 1547 conditions per place. [2024-06-28 03:40:44,798 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 336 selfloop transitions, 22 changer transitions 0/360 dead transitions. [2024-06-28 03:40:44,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 360 transitions, 5536 flow [2024-06-28 03:40:44,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:40:44,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:40:44,799 INFO L175 Difference]: Start difference. First operand has 335 places, 350 transitions, 4798 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:40:44,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 360 transitions, 5536 flow [2024-06-28 03:40:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 360 transitions, 5482 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:45,650 INFO L231 Difference]: Finished difference. Result has 337 places, 350 transitions, 4792 flow [2024-06-28 03:40:45,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4744, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4792, PETRI_PLACES=337, PETRI_TRANSITIONS=350} [2024-06-28 03:40:45,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-28 03:40:45,651 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 350 transitions, 4792 flow [2024-06-28 03:40:45,651 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) [2024-06-28 03:40:45,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:45,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:45,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:40:45,651 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)] === [2024-06-28 03:40:45,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:45,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2072155277, now seen corresponding path program 16 times [2024-06-28 03:40:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831636548] [2024-06-28 03:40:45,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:45,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:46,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831636548] [2024-06-28 03:40:46,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831636548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581388147] [2024-06-28 03:40:46,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:46,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:46,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 350 transitions, 4792 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) [2024-06-28 03:40:46,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:46,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:46,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:47,507 INFO L124 PetriNetUnfolderBase]: 888/1585 cut-off events. [2024-06-28 03:40:47,507 INFO L125 PetriNetUnfolderBase]: For 147803/147803 co-relation queries the response was YES. [2024-06-28 03:40:47,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11650 conditions, 1585 events. 888/1585 cut-off events. For 147803/147803 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9009 event pairs, 190 based on Foata normal form. 2/1585 useless extension candidates. Maximal degree in co-relation 11499. Up to 1510 conditions per place. [2024-06-28 03:40:47,522 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 332 selfloop transitions, 29 changer transitions 0/363 dead transitions. [2024-06-28 03:40:47,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 363 transitions, 5550 flow [2024-06-28 03:40:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:47,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:47,523 INFO L175 Difference]: Start difference. First operand has 337 places, 350 transitions, 4792 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:47,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 363 transitions, 5550 flow [2024-06-28 03:40:48,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 363 transitions, 5478 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:48,275 INFO L231 Difference]: Finished difference. Result has 339 places, 350 transitions, 4783 flow [2024-06-28 03:40:48,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4783, PETRI_PLACES=339, PETRI_TRANSITIONS=350} [2024-06-28 03:40:48,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 03:40:48,276 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 350 transitions, 4783 flow [2024-06-28 03:40:48,276 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) [2024-06-28 03:40:48,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:48,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:40:48,276 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)] === [2024-06-28 03:40:48,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2065899167, now seen corresponding path program 17 times [2024-06-28 03:40:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617177223] [2024-06-28 03:40:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:49,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:49,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:49,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617177223] [2024-06-28 03:40:49,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617177223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:49,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:49,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:49,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433746483] [2024-06-28 03:40:49,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:49,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:49,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:49,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 350 transitions, 4783 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) [2024-06-28 03:40:49,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:49,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:49,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:49,852 INFO L124 PetriNetUnfolderBase]: 894/1595 cut-off events. [2024-06-28 03:40:49,853 INFO L125 PetriNetUnfolderBase]: For 150672/150672 co-relation queries the response was YES. [2024-06-28 03:40:49,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11729 conditions, 1595 events. 894/1595 cut-off events. For 150672/150672 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9095 event pairs, 190 based on Foata normal form. 2/1595 useless extension candidates. Maximal degree in co-relation 11577. Up to 1520 conditions per place. [2024-06-28 03:40:49,870 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 334 selfloop transitions, 29 changer transitions 0/365 dead transitions. [2024-06-28 03:40:49,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 365 transitions, 5585 flow [2024-06-28 03:40:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:49,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:49,871 INFO L175 Difference]: Start difference. First operand has 339 places, 350 transitions, 4783 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:49,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 365 transitions, 5585 flow [2024-06-28 03:40:50,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 365 transitions, 5522 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:50,705 INFO L231 Difference]: Finished difference. Result has 340 places, 352 transitions, 4827 flow [2024-06-28 03:40:50,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4827, PETRI_PLACES=340, PETRI_TRANSITIONS=352} [2024-06-28 03:40:50,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 03:40:50,706 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 352 transitions, 4827 flow [2024-06-28 03:40:50,706 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) [2024-06-28 03:40:50,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:50,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:40:50,706 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)] === [2024-06-28 03:40:50,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2065668527, now seen corresponding path program 18 times [2024-06-28 03:40:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:50,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075521244] [2024-06-28 03:40:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:51,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:51,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075521244] [2024-06-28 03:40:51,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075521244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:51,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:51,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:51,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432867728] [2024-06-28 03:40:51,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:51,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:51,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:51,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:51,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 352 transitions, 4827 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) [2024-06-28 03:40:51,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:51,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:52,493 INFO L124 PetriNetUnfolderBase]: 890/1589 cut-off events. [2024-06-28 03:40:52,493 INFO L125 PetriNetUnfolderBase]: For 143113/143113 co-relation queries the response was YES. [2024-06-28 03:40:52,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11519 conditions, 1589 events. 890/1589 cut-off events. For 143113/143113 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9051 event pairs, 189 based on Foata normal form. 2/1589 useless extension candidates. Maximal degree in co-relation 11366. Up to 1514 conditions per place. [2024-06-28 03:40:52,511 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 332 selfloop transitions, 30 changer transitions 0/364 dead transitions. [2024-06-28 03:40:52,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 364 transitions, 5583 flow [2024-06-28 03:40:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:40:52,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:40:52,512 INFO L175 Difference]: Start difference. First operand has 340 places, 352 transitions, 4827 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:40:52,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 364 transitions, 5583 flow [2024-06-28 03:40:53,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 364 transitions, 5494 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:53,199 INFO L231 Difference]: Finished difference. Result has 342 places, 352 transitions, 4803 flow [2024-06-28 03:40:53,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4738, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4803, PETRI_PLACES=342, PETRI_TRANSITIONS=352} [2024-06-28 03:40:53,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 03:40:53,200 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 352 transitions, 4803 flow [2024-06-28 03:40:53,200 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) [2024-06-28 03:40:53,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:53,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:53,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:40:53,200 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)] === [2024-06-28 03:40:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1590879987, now seen corresponding path program 19 times [2024-06-28 03:40:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:53,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410666411] [2024-06-28 03:40:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410666411] [2024-06-28 03:40:54,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410666411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:54,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:54,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409314469] [2024-06-28 03:40:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:54,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:54,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:54,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:54,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 352 transitions, 4803 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) [2024-06-28 03:40:54,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:54,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:54,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:54,894 INFO L124 PetriNetUnfolderBase]: 896/1599 cut-off events. [2024-06-28 03:40:54,895 INFO L125 PetriNetUnfolderBase]: For 145946/145946 co-relation queries the response was YES. [2024-06-28 03:40:54,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11596 conditions, 1599 events. 896/1599 cut-off events. For 145946/145946 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9117 event pairs, 189 based on Foata normal form. 2/1599 useless extension candidates. Maximal degree in co-relation 11442. Up to 1525 conditions per place. [2024-06-28 03:40:54,909 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 338 selfloop transitions, 27 changer transitions 0/367 dead transitions. [2024-06-28 03:40:54,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 367 transitions, 5621 flow [2024-06-28 03:40:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:40:54,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:40:54,910 INFO L175 Difference]: Start difference. First operand has 342 places, 352 transitions, 4803 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:40:54,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 367 transitions, 5621 flow [2024-06-28 03:40:55,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 367 transitions, 5549 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:55,516 INFO L231 Difference]: Finished difference. Result has 343 places, 354 transitions, 4846 flow [2024-06-28 03:40:55,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4731, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4846, PETRI_PLACES=343, PETRI_TRANSITIONS=354} [2024-06-28 03:40:55,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 03:40:55,517 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 354 transitions, 4846 flow [2024-06-28 03:40:55,517 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) [2024-06-28 03:40:55,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:55,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:55,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:40:55,517 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)] === [2024-06-28 03:40:55,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2065659599, now seen corresponding path program 5 times [2024-06-28 03:40:55,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:55,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458446785] [2024-06-28 03:40:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458446785] [2024-06-28 03:40:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458446785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:40:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162215283] [2024-06-28 03:40:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:56,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:40:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:40:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:40:57,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:57,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 354 transitions, 4846 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) [2024-06-28 03:40:57,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:57,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:57,510 INFO L124 PetriNetUnfolderBase]: 900/1607 cut-off events. [2024-06-28 03:40:57,510 INFO L125 PetriNetUnfolderBase]: For 149015/149015 co-relation queries the response was YES. [2024-06-28 03:40:57,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11666 conditions, 1607 events. 900/1607 cut-off events. For 149015/149015 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9173 event pairs, 187 based on Foata normal form. 2/1607 useless extension candidates. Maximal degree in co-relation 11511. Up to 1548 conditions per place. [2024-06-28 03:40:57,528 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 340 selfloop transitions, 25 changer transitions 0/367 dead transitions. [2024-06-28 03:40:57,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 367 transitions, 5626 flow [2024-06-28 03:40:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:40:57,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:40:57,529 INFO L175 Difference]: Start difference. First operand has 343 places, 354 transitions, 4846 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:40:57,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 367 transitions, 5626 flow [2024-06-28 03:40:58,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 367 transitions, 5549 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:58,340 INFO L231 Difference]: Finished difference. Result has 346 places, 355 transitions, 4845 flow [2024-06-28 03:40:58,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4845, PETRI_PLACES=346, PETRI_TRANSITIONS=355} [2024-06-28 03:40:58,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 03:40:58,341 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 355 transitions, 4845 flow [2024-06-28 03:40:58,341 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) [2024-06-28 03:40:58,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:58,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:58,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:40:58,341 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)] === [2024-06-28 03:40:58,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:58,341 INFO L85 PathProgramCache]: Analyzing trace with hash -156838473, now seen corresponding path program 20 times [2024-06-28 03:40:58,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:58,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467603230] [2024-06-28 03:40:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:58,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:59,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:59,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467603230] [2024-06-28 03:40:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467603230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:59,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:59,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654966327] [2024-06-28 03:40:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:59,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:59,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:59,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:59,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:59,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 355 transitions, 4845 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) [2024-06-28 03:40:59,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:59,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:59,933 INFO L124 PetriNetUnfolderBase]: 906/1617 cut-off events. [2024-06-28 03:40:59,934 INFO L125 PetriNetUnfolderBase]: For 151684/151684 co-relation queries the response was YES. [2024-06-28 03:40:59,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11749 conditions, 1617 events. 906/1617 cut-off events. For 151684/151684 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9251 event pairs, 185 based on Foata normal form. 2/1617 useless extension candidates. Maximal degree in co-relation 11593. Up to 1507 conditions per place. [2024-06-28 03:40:59,949 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 330 selfloop transitions, 39 changer transitions 0/371 dead transitions. [2024-06-28 03:40:59,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 371 transitions, 5887 flow [2024-06-28 03:40:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:59,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 03:40:59,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 03:40:59,950 INFO L175 Difference]: Start difference. First operand has 346 places, 355 transitions, 4845 flow. Second operand 11 states and 112 transitions. [2024-06-28 03:40:59,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 371 transitions, 5887 flow [2024-06-28 03:41:00,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 371 transitions, 5821 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:00,691 INFO L231 Difference]: Finished difference. Result has 349 places, 357 transitions, 4918 flow [2024-06-28 03:41:00,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4918, PETRI_PLACES=349, PETRI_TRANSITIONS=357} [2024-06-28 03:41:00,691 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 03:41:00,691 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 357 transitions, 4918 flow [2024-06-28 03:41:00,692 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) [2024-06-28 03:41:00,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:00,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:41:00,692 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)] === [2024-06-28 03:41:00,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1590649347, now seen corresponding path program 21 times [2024-06-28 03:41:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812130191] [2024-06-28 03:41:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812130191] [2024-06-28 03:41:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812130191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:01,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:01,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064505516] [2024-06-28 03:41:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:01,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:01,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:01,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:01,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:01,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 357 transitions, 4918 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) [2024-06-28 03:41:01,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:01,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:01,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:02,058 INFO L124 PetriNetUnfolderBase]: 902/1611 cut-off events. [2024-06-28 03:41:02,058 INFO L125 PetriNetUnfolderBase]: For 143086/143086 co-relation queries the response was YES. [2024-06-28 03:41:02,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11520 conditions, 1611 events. 902/1611 cut-off events. For 143086/143086 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9244 event pairs, 185 based on Foata normal form. 2/1611 useless extension candidates. Maximal degree in co-relation 11363. Up to 1531 conditions per place. [2024-06-28 03:41:02,077 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 337 selfloop transitions, 31 changer transitions 0/370 dead transitions. [2024-06-28 03:41:02,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 370 transitions, 5690 flow [2024-06-28 03:41:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:02,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:41:02,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:41:02,078 INFO L175 Difference]: Start difference. First operand has 349 places, 357 transitions, 4918 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:41:02,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 370 transitions, 5690 flow [2024-06-28 03:41:02,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 370 transitions, 5519 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:02,800 INFO L231 Difference]: Finished difference. Result has 349 places, 357 transitions, 4814 flow [2024-06-28 03:41:02,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4814, PETRI_PLACES=349, PETRI_TRANSITIONS=357} [2024-06-28 03:41:02,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 03:41:02,800 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 357 transitions, 4814 flow [2024-06-28 03:41:02,800 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) [2024-06-28 03:41:02,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:02,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:02,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:41:02,801 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)] === [2024-06-28 03:41:02,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:02,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1875988785, now seen corresponding path program 6 times [2024-06-28 03:41:02,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:02,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658108037] [2024-06-28 03:41:02,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:02,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:03,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:03,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658108037] [2024-06-28 03:41:03,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658108037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:03,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:03,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089101045] [2024-06-28 03:41:03,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:03,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:03,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:03,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:03,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 357 transitions, 4814 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) [2024-06-28 03:41:03,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:03,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:03,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:04,498 INFO L124 PetriNetUnfolderBase]: 899/1606 cut-off events. [2024-06-28 03:41:04,498 INFO L125 PetriNetUnfolderBase]: For 133416/133416 co-relation queries the response was YES. [2024-06-28 03:41:04,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11100 conditions, 1606 events. 899/1606 cut-off events. For 133416/133416 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9176 event pairs, 191 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 10944. Up to 1563 conditions per place. [2024-06-28 03:41:04,519 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 347 selfloop transitions, 19 changer transitions 0/368 dead transitions. [2024-06-28 03:41:04,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 368 transitions, 5572 flow [2024-06-28 03:41:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 03:41:04,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 03:41:04,520 INFO L175 Difference]: Start difference. First operand has 349 places, 357 transitions, 4814 flow. Second operand 10 states and 97 transitions. [2024-06-28 03:41:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 368 transitions, 5572 flow [2024-06-28 03:41:05,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 368 transitions, 5490 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:05,181 INFO L231 Difference]: Finished difference. Result has 350 places, 357 transitions, 4775 flow [2024-06-28 03:41:05,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4732, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4775, PETRI_PLACES=350, PETRI_TRANSITIONS=357} [2024-06-28 03:41:05,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 03:41:05,182 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 357 transitions, 4775 flow [2024-06-28 03:41:05,182 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) [2024-06-28 03:41:05,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:05,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:05,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:41:05,182 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)] === [2024-06-28 03:41:05,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:05,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1419632069, now seen corresponding path program 23 times [2024-06-28 03:41:05,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:05,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313345858] [2024-06-28 03:41:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:05,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313345858] [2024-06-28 03:41:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313345858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:05,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:05,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:41:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753718616] [2024-06-28 03:41:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:41:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:41:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:41:05,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 357 transitions, 4775 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:06,448 INFO L124 PetriNetUnfolderBase]: 893/1596 cut-off events. [2024-06-28 03:41:06,448 INFO L125 PetriNetUnfolderBase]: For 124134/124134 co-relation queries the response was YES. [2024-06-28 03:41:06,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10597 conditions, 1596 events. 893/1596 cut-off events. For 124134/124134 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9139 event pairs, 119 based on Foata normal form. 4/1598 useless extension candidates. Maximal degree in co-relation 10440. Up to 1281 conditions per place. [2024-06-28 03:41:06,466 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 107 changer transitions 0/371 dead transitions. [2024-06-28 03:41:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 371 transitions, 5557 flow [2024-06-28 03:41:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:41:06,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:06,467 INFO L175 Difference]: Start difference. First operand has 350 places, 357 transitions, 4775 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:41:06,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 371 transitions, 5557 flow [2024-06-28 03:41:07,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 371 transitions, 5452 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:07,050 INFO L231 Difference]: Finished difference. Result has 350 places, 357 transitions, 4891 flow [2024-06-28 03:41:07,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4891, PETRI_PLACES=350, PETRI_TRANSITIONS=357} [2024-06-28 03:41:07,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 03:41:07,051 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 357 transitions, 4891 flow [2024-06-28 03:41:07,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:41:07,051 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)] === [2024-06-28 03:41:07,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,052 INFO L85 PathProgramCache]: Analyzing trace with hash 968195855, now seen corresponding path program 22 times [2024-06-28 03:41:07,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071204397] [2024-06-28 03:41:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071204397] [2024-06-28 03:41:08,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071204397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:08,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737940843] [2024-06-28 03:41:08,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:08,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:08,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:08,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 357 transitions, 4891 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) [2024-06-28 03:41:08,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:08,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:08,965 INFO L124 PetriNetUnfolderBase]: 907/1620 cut-off events. [2024-06-28 03:41:08,965 INFO L125 PetriNetUnfolderBase]: For 115257/115257 co-relation queries the response was YES. [2024-06-28 03:41:08,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10861 conditions, 1620 events. 907/1620 cut-off events. For 115257/115257 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9305 event pairs, 125 based on Foata normal form. 2/1620 useless extension candidates. Maximal degree in co-relation 10705. Up to 900 conditions per place. [2024-06-28 03:41:08,982 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 218 selfloop transitions, 167 changer transitions 0/387 dead transitions. [2024-06-28 03:41:08,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 387 transitions, 6071 flow [2024-06-28 03:41:08,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:41:08,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:41:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-28 03:41:08,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3920595533498759 [2024-06-28 03:41:08,983 INFO L175 Difference]: Start difference. First operand has 350 places, 357 transitions, 4891 flow. Second operand 13 states and 158 transitions. [2024-06-28 03:41:08,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 387 transitions, 6071 flow [2024-06-28 03:41:09,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 387 transitions, 5639 flow, removed 29 selfloop flow, removed 13 redundant places. [2024-06-28 03:41:09,574 INFO L231 Difference]: Finished difference. Result has 352 places, 363 transitions, 4972 flow [2024-06-28 03:41:09,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4460, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4972, PETRI_PLACES=352, PETRI_TRANSITIONS=363} [2024-06-28 03:41:09,574 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 322 predicate places. [2024-06-28 03:41:09,574 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 363 transitions, 4972 flow [2024-06-28 03:41:09,575 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) [2024-06-28 03:41:09,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:09,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:41:09,575 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)] === [2024-06-28 03:41:09,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1994493457, now seen corresponding path program 23 times [2024-06-28 03:41:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:09,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845068270] [2024-06-28 03:41:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:10,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:10,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845068270] [2024-06-28 03:41:10,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845068270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:10,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:10,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:10,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987550973] [2024-06-28 03:41:10,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:10,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:10,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:10,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:10,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:10,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 363 transitions, 4972 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) [2024-06-28 03:41:10,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:10,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:11,507 INFO L124 PetriNetUnfolderBase]: 903/1614 cut-off events. [2024-06-28 03:41:11,508 INFO L125 PetriNetUnfolderBase]: For 105770/105770 co-relation queries the response was YES. [2024-06-28 03:41:11,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 1614 events. 903/1614 cut-off events. For 105770/105770 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9280 event pairs, 118 based on Foata normal form. 2/1614 useless extension candidates. Maximal degree in co-relation 10465. Up to 897 conditions per place. [2024-06-28 03:41:11,525 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 174 changer transitions 0/386 dead transitions. [2024-06-28 03:41:11,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 386 transitions, 6026 flow [2024-06-28 03:41:11,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:41:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:41:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-28 03:41:11,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:11,527 INFO L175 Difference]: Start difference. First operand has 352 places, 363 transitions, 4972 flow. Second operand 13 states and 156 transitions. [2024-06-28 03:41:11,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 386 transitions, 6026 flow [2024-06-28 03:41:12,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 386 transitions, 5397 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:12,060 INFO L231 Difference]: Finished difference. Result has 357 places, 363 transitions, 4696 flow [2024-06-28 03:41:12,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4343, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4696, PETRI_PLACES=357, PETRI_TRANSITIONS=363} [2024-06-28 03:41:12,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 03:41:12,060 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 363 transitions, 4696 flow [2024-06-28 03:41:12,060 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) [2024-06-28 03:41:12,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:12,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:12,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:41:12,061 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)] === [2024-06-28 03:41:12,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:12,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2000929057, now seen corresponding path program 24 times [2024-06-28 03:41:12,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:12,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167988641] [2024-06-28 03:41:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:12,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167988641] [2024-06-28 03:41:13,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167988641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:13,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:13,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428018841] [2024-06-28 03:41:13,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:13,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:13,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:13,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 363 transitions, 4696 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) [2024-06-28 03:41:13,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:13,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:13,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:13,862 INFO L124 PetriNetUnfolderBase]: 899/1608 cut-off events. [2024-06-28 03:41:13,863 INFO L125 PetriNetUnfolderBase]: For 93934/93934 co-relation queries the response was YES. [2024-06-28 03:41:13,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9831 conditions, 1608 events. 899/1608 cut-off events. For 93934/93934 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 9244 event pairs, 132 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9679. Up to 894 conditions per place. [2024-06-28 03:41:13,878 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 175 changer transitions 0/382 dead transitions. [2024-06-28 03:41:13,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 382 transitions, 5512 flow [2024-06-28 03:41:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:41:13,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:41:13,880 INFO L175 Difference]: Start difference. First operand has 357 places, 363 transitions, 4696 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:41:13,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 382 transitions, 5512 flow [2024-06-28 03:41:14,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 382 transitions, 4869 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:14,334 INFO L231 Difference]: Finished difference. Result has 360 places, 363 transitions, 4408 flow [2024-06-28 03:41:14,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4408, PETRI_PLACES=360, PETRI_TRANSITIONS=363} [2024-06-28 03:41:14,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 03:41:14,335 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 363 transitions, 4408 flow [2024-06-28 03:41:14,335 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) [2024-06-28 03:41:14,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:14,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:14,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:41:14,335 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)] === [2024-06-28 03:41:14,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:14,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1700312977, now seen corresponding path program 1 times [2024-06-28 03:41:14,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:14,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061274023] [2024-06-28 03:41:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:15,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:15,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:15,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061274023] [2024-06-28 03:41:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061274023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:15,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:15,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386018771] [2024-06-28 03:41:15,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:15,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:15,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:15,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:15,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:15,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 363 transitions, 4408 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) [2024-06-28 03:41:15,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:15,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:15,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:15,909 INFO L124 PetriNetUnfolderBase]: 926/1669 cut-off events. [2024-06-28 03:41:15,909 INFO L125 PetriNetUnfolderBase]: For 169590/169590 co-relation queries the response was YES. [2024-06-28 03:41:15,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10108 conditions, 1669 events. 926/1669 cut-off events. For 169590/169590 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 9607 event pairs, 103 based on Foata normal form. 8/1675 useless extension candidates. Maximal degree in co-relation 9958. Up to 738 conditions per place. [2024-06-28 03:41:15,927 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 183 selfloop transitions, 184 changer transitions 21/390 dead transitions. [2024-06-28 03:41:15,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 390 transitions, 5484 flow [2024-06-28 03:41:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:41:15,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:41:15,928 INFO L175 Difference]: Start difference. First operand has 360 places, 363 transitions, 4408 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:41:15,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 390 transitions, 5484 flow [2024-06-28 03:41:16,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 390 transitions, 5126 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:16,456 INFO L231 Difference]: Finished difference. Result has 364 places, 355 transitions, 4314 flow [2024-06-28 03:41:16,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4314, PETRI_PLACES=364, PETRI_TRANSITIONS=355} [2024-06-28 03:41:16,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 03:41:16,456 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 355 transitions, 4314 flow [2024-06-28 03:41:16,456 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) [2024-06-28 03:41:16,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:16,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:41:16,457 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)] === [2024-06-28 03:41:16,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 104272043, now seen corresponding path program 2 times [2024-06-28 03:41:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:16,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643164821] [2024-06-28 03:41:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:16,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:17,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643164821] [2024-06-28 03:41:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643164821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663016467] [2024-06-28 03:41:17,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:17,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:17,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:17,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:17,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 355 transitions, 4314 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) [2024-06-28 03:41:17,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:17,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:18,040 INFO L124 PetriNetUnfolderBase]: 900/1627 cut-off events. [2024-06-28 03:41:18,040 INFO L125 PetriNetUnfolderBase]: For 172487/172487 co-relation queries the response was YES. [2024-06-28 03:41:18,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9826 conditions, 1627 events. 900/1627 cut-off events. For 172487/172487 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9339 event pairs, 102 based on Foata normal form. 8/1633 useless extension candidates. Maximal degree in co-relation 9676. Up to 865 conditions per place. [2024-06-28 03:41:18,057 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 189 changer transitions 15/377 dead transitions. [2024-06-28 03:41:18,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 377 transitions, 5143 flow [2024-06-28 03:41:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:41:18,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:41:18,058 INFO L175 Difference]: Start difference. First operand has 364 places, 355 transitions, 4314 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:41:18,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 377 transitions, 5143 flow [2024-06-28 03:41:18,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 377 transitions, 4991 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:18,565 INFO L231 Difference]: Finished difference. Result has 358 places, 351 transitions, 4507 flow [2024-06-28 03:41:18,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4163, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4507, PETRI_PLACES=358, PETRI_TRANSITIONS=351} [2024-06-28 03:41:18,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:41:18,566 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 351 transitions, 4507 flow [2024-06-28 03:41:18,566 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) [2024-06-28 03:41:18,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:18,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:41:18,567 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)] === [2024-06-28 03:41:18,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash 104127893, now seen corresponding path program 3 times [2024-06-28 03:41:18,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037931474] [2024-06-28 03:41:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:19,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:19,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037931474] [2024-06-28 03:41:19,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037931474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:19,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:19,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172934791] [2024-06-28 03:41:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:19,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:19,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:19,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:19,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 351 transitions, 4507 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) [2024-06-28 03:41:19,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:19,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:19,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:20,161 INFO L124 PetriNetUnfolderBase]: 886/1601 cut-off events. [2024-06-28 03:41:20,161 INFO L125 PetriNetUnfolderBase]: For 164366/164366 co-relation queries the response was YES. [2024-06-28 03:41:20,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10020 conditions, 1601 events. 886/1601 cut-off events. For 164366/164366 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9154 event pairs, 100 based on Foata normal form. 8/1607 useless extension candidates. Maximal degree in co-relation 9875. Up to 837 conditions per place. [2024-06-28 03:41:20,176 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 167 selfloop transitions, 184 changer transitions 19/372 dead transitions. [2024-06-28 03:41:20,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 372 transitions, 5307 flow [2024-06-28 03:41:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:41:20,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:41:20,177 INFO L175 Difference]: Start difference. First operand has 358 places, 351 transitions, 4507 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:41:20,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 372 transitions, 5307 flow [2024-06-28 03:41:20,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 372 transitions, 4922 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:20,872 INFO L231 Difference]: Finished difference. Result has 358 places, 343 transitions, 4379 flow [2024-06-28 03:41:20,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=4122, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4379, PETRI_PLACES=358, PETRI_TRANSITIONS=343} [2024-06-28 03:41:20,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:41:20,873 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 343 transitions, 4379 flow [2024-06-28 03:41:20,873 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) [2024-06-28 03:41:20,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:20,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:20,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:41:20,873 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)] === [2024-06-28 03:41:20,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:20,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1204617459, now seen corresponding path program 4 times [2024-06-28 03:41:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:20,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142986622] [2024-06-28 03:41:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:21,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:21,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142986622] [2024-06-28 03:41:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142986622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683631645] [2024-06-28 03:41:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:21,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 343 transitions, 4379 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:21,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:21,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,169 INFO L124 PetriNetUnfolderBase]: 910/1657 cut-off events. [2024-06-28 03:41:22,170 INFO L125 PetriNetUnfolderBase]: For 260344/260344 co-relation queries the response was YES. [2024-06-28 03:41:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11814 conditions, 1657 events. 910/1657 cut-off events. For 260344/260344 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9456 event pairs, 162 based on Foata normal form. 8/1663 useless extension candidates. Maximal degree in co-relation 11669. Up to 583 conditions per place. [2024-06-28 03:41:22,188 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 184 selfloop transitions, 149 changer transitions 32/367 dead transitions. [2024-06-28 03:41:22,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 367 transitions, 5405 flow [2024-06-28 03:41:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 03:41:22,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 03:41:22,189 INFO L175 Difference]: Start difference. First operand has 358 places, 343 transitions, 4379 flow. Second operand 10 states and 124 transitions. [2024-06-28 03:41:22,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 367 transitions, 5405 flow [2024-06-28 03:41:23,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 367 transitions, 4999 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:23,163 INFO L231 Difference]: Finished difference. Result has 351 places, 321 transitions, 3969 flow [2024-06-28 03:41:23,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3969, PETRI_PLACES=351, PETRI_TRANSITIONS=321} [2024-06-28 03:41:23,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-28 03:41:23,163 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 321 transitions, 3969 flow [2024-06-28 03:41:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:23,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:23,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:23,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:41:23,164 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)] === [2024-06-28 03:41:23,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1809122577, now seen corresponding path program 5 times [2024-06-28 03:41:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504032868] [2024-06-28 03:41:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:24,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:24,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504032868] [2024-06-28 03:41:24,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504032868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:24,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027934993] [2024-06-28 03:41:24,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:24,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:24,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:24,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 321 transitions, 3969 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) [2024-06-28 03:41:24,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:24,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:24,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:24,899 INFO L124 PetriNetUnfolderBase]: 854/1549 cut-off events. [2024-06-28 03:41:24,899 INFO L125 PetriNetUnfolderBase]: For 271590/271590 co-relation queries the response was YES. [2024-06-28 03:41:24,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 1549 events. 854/1549 cut-off events. For 271590/271590 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8665 event pairs, 112 based on Foata normal form. 10/1557 useless extension candidates. Maximal degree in co-relation 11028. Up to 1171 conditions per place. [2024-06-28 03:41:24,916 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 88 changer transitions 15/340 dead transitions. [2024-06-28 03:41:24,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 340 transitions, 4705 flow [2024-06-28 03:41:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:41:24,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:41:24,917 INFO L175 Difference]: Start difference. First operand has 351 places, 321 transitions, 3969 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:41:24,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 340 transitions, 4705 flow [2024-06-28 03:41:25,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 340 transitions, 4284 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-28 03:41:25,754 INFO L231 Difference]: Finished difference. Result has 331 places, 315 transitions, 3664 flow [2024-06-28 03:41:25,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3664, PETRI_PLACES=331, PETRI_TRANSITIONS=315} [2024-06-28 03:41:25,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 03:41:25,755 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 315 transitions, 3664 flow [2024-06-28 03:41:25,755 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) [2024-06-28 03:41:25,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:25,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:25,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:41:25,755 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)] === [2024-06-28 03:41:25,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1808920767, now seen corresponding path program 6 times [2024-06-28 03:41:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:25,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884405570] [2024-06-28 03:41:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:26,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:26,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884405570] [2024-06-28 03:41:26,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884405570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:26,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:26,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:26,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086523377] [2024-06-28 03:41:26,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:26,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:26,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:27,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:27,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 315 transitions, 3664 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) [2024-06-28 03:41:27,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:27,561 INFO L124 PetriNetUnfolderBase]: 790/1429 cut-off events. [2024-06-28 03:41:27,561 INFO L125 PetriNetUnfolderBase]: For 162545/162545 co-relation queries the response was YES. [2024-06-28 03:41:27,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8570 conditions, 1429 events. 790/1429 cut-off events. For 162545/162545 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7926 event pairs, 76 based on Foata normal form. 10/1437 useless extension candidates. Maximal degree in co-relation 8447. Up to 1033 conditions per place. [2024-06-28 03:41:27,574 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 92 changer transitions 13/335 dead transitions. [2024-06-28 03:41:27,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 335 transitions, 4392 flow [2024-06-28 03:41:27,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 03:41:27,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:41:27,576 INFO L175 Difference]: Start difference. First operand has 331 places, 315 transitions, 3664 flow. Second operand 12 states and 132 transitions. [2024-06-28 03:41:27,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 335 transitions, 4392 flow [2024-06-28 03:41:27,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 335 transitions, 4212 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:27,949 INFO L231 Difference]: Finished difference. Result has 330 places, 309 transitions, 3620 flow [2024-06-28 03:41:27,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3484, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3620, PETRI_PLACES=330, PETRI_TRANSITIONS=309} [2024-06-28 03:41:27,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-28 03:41:27,949 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 309 transitions, 3620 flow [2024-06-28 03:41:27,949 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) [2024-06-28 03:41:27,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:27,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:27,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:41:27,950 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)] === [2024-06-28 03:41:27,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1808915187, now seen corresponding path program 7 times [2024-06-28 03:41:27,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:27,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816254684] [2024-06-28 03:41:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:27,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:28,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:28,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816254684] [2024-06-28 03:41:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816254684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111085302] [2024-06-28 03:41:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:28,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:29,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:29,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 309 transitions, 3620 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) [2024-06-28 03:41:29,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:29,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:29,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:29,455 INFO L124 PetriNetUnfolderBase]: 785/1430 cut-off events. [2024-06-28 03:41:29,455 INFO L125 PetriNetUnfolderBase]: For 180557/180557 co-relation queries the response was YES. [2024-06-28 03:41:29,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 1430 events. 785/1430 cut-off events. For 180557/180557 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7926 event pairs, 141 based on Foata normal form. 8/1436 useless extension candidates. Maximal degree in co-relation 9031. Up to 663 conditions per place. [2024-06-28 03:41:29,469 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 145 changer transitions 18/331 dead transitions. [2024-06-28 03:41:29,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 331 transitions, 4554 flow [2024-06-28 03:41:29,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:41:29,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:41:29,470 INFO L175 Difference]: Start difference. First operand has 330 places, 309 transitions, 3620 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:41:29,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 331 transitions, 4554 flow [2024-06-28 03:41:29,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 331 transitions, 4358 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:41:29,928 INFO L231 Difference]: Finished difference. Result has 327 places, 298 transitions, 3605 flow [2024-06-28 03:41:29,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3605, PETRI_PLACES=327, PETRI_TRANSITIONS=298} [2024-06-28 03:41:29,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 03:41:29,928 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 298 transitions, 3605 flow [2024-06-28 03:41:29,929 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) [2024-06-28 03:41:29,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:29,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:41:29,929 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)] === [2024-06-28 03:41:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1803558387, now seen corresponding path program 8 times [2024-06-28 03:41:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225602691] [2024-06-28 03:41:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:30,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225602691] [2024-06-28 03:41:30,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225602691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647304528] [2024-06-28 03:41:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:30,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:30,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:30,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 298 transitions, 3605 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:30,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:30,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:31,403 INFO L124 PetriNetUnfolderBase]: 765/1394 cut-off events. [2024-06-28 03:41:31,404 INFO L125 PetriNetUnfolderBase]: For 188791/188791 co-relation queries the response was YES. [2024-06-28 03:41:31,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9089 conditions, 1394 events. 765/1394 cut-off events. For 188791/188791 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7650 event pairs, 93 based on Foata normal form. 10/1402 useless extension candidates. Maximal degree in co-relation 8968. Up to 1002 conditions per place. [2024-06-28 03:41:31,417 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 88 changer transitions 15/316 dead transitions. [2024-06-28 03:41:31,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 316 transitions, 4291 flow [2024-06-28 03:41:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:41:31,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:41:31,418 INFO L175 Difference]: Start difference. First operand has 327 places, 298 transitions, 3605 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:41:31,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 316 transitions, 4291 flow [2024-06-28 03:41:31,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 316 transitions, 3985 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 03:41:31,834 INFO L231 Difference]: Finished difference. Result has 317 places, 292 transitions, 3423 flow [2024-06-28 03:41:31,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3423, PETRI_PLACES=317, PETRI_TRANSITIONS=292} [2024-06-28 03:41:31,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:41:31,835 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 292 transitions, 3423 flow [2024-06-28 03:41:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:31,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:31,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:31,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:41:31,836 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)] === [2024-06-28 03:41:31,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1803408657, now seen corresponding path program 9 times [2024-06-28 03:41:31,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:31,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029233232] [2024-06-28 03:41:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:31,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:32,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:32,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029233232] [2024-06-28 03:41:32,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029233232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:32,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:32,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:32,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121113707] [2024-06-28 03:41:32,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:32,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:32,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:32,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:32,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 292 transitions, 3423 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) [2024-06-28 03:41:32,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:32,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:32,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:33,483 INFO L124 PetriNetUnfolderBase]: 767/1408 cut-off events. [2024-06-28 03:41:33,484 INFO L125 PetriNetUnfolderBase]: For 204239/204239 co-relation queries the response was YES. [2024-06-28 03:41:33,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9618 conditions, 1408 events. 767/1408 cut-off events. For 204239/204239 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7774 event pairs, 161 based on Foata normal form. 8/1414 useless extension candidates. Maximal degree in co-relation 9501. Up to 583 conditions per place. [2024-06-28 03:41:33,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 133 changer transitions 22/316 dead transitions. [2024-06-28 03:41:33,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 316 transitions, 4327 flow [2024-06-28 03:41:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:33,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:41:33,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:41:33,498 INFO L175 Difference]: Start difference. First operand has 317 places, 292 transitions, 3423 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:41:33,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 316 transitions, 4327 flow [2024-06-28 03:41:33,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 316 transitions, 4122 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:33,972 INFO L231 Difference]: Finished difference. Result has 315 places, 278 transitions, 3347 flow [2024-06-28 03:41:33,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=315, PETRI_TRANSITIONS=278} [2024-06-28 03:41:33,973 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 03:41:33,973 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 278 transitions, 3347 flow [2024-06-28 03:41:33,973 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) [2024-06-28 03:41:33,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:33,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:33,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:41:33,973 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)] === [2024-06-28 03:41:33,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:33,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1803552807, now seen corresponding path program 10 times [2024-06-28 03:41:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697245758] [2024-06-28 03:41:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:33,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:35,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:35,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:35,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697245758] [2024-06-28 03:41:35,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697245758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:35,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:35,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:35,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807112249] [2024-06-28 03:41:35,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:35,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:35,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:35,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 278 transitions, 3347 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:35,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:35,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:35,502 INFO L124 PetriNetUnfolderBase]: 709/1294 cut-off events. [2024-06-28 03:41:35,502 INFO L125 PetriNetUnfolderBase]: For 161166/161166 co-relation queries the response was YES. [2024-06-28 03:41:35,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8530 conditions, 1294 events. 709/1294 cut-off events. For 161166/161166 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6967 event pairs, 85 based on Foata normal form. 8/1300 useless extension candidates. Maximal degree in co-relation 8414. Up to 928 conditions per place. [2024-06-28 03:41:35,517 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 76 changer transitions 17/295 dead transitions. [2024-06-28 03:41:35,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 295 transitions, 3983 flow [2024-06-28 03:41:35,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:35,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:35,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:41:35,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:41:35,518 INFO L175 Difference]: Start difference. First operand has 315 places, 278 transitions, 3347 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:41:35,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 295 transitions, 3983 flow [2024-06-28 03:41:36,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 295 transitions, 3695 flow, removed 7 selfloop flow, removed 16 redundant places. [2024-06-28 03:41:36,075 INFO L231 Difference]: Finished difference. Result has 300 places, 271 transitions, 3135 flow [2024-06-28 03:41:36,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3135, PETRI_PLACES=300, PETRI_TRANSITIONS=271} [2024-06-28 03:41:36,075 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-28 03:41:36,075 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 271 transitions, 3135 flow [2024-06-28 03:41:36,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:36,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:36,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:36,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:41:36,076 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)] === [2024-06-28 03:41:36,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 326714257, now seen corresponding path program 11 times [2024-06-28 03:41:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:36,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117150966] [2024-06-28 03:41:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:36,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:36,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117150966] [2024-06-28 03:41:36,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117150966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:36,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:36,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142335237] [2024-06-28 03:41:36,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:36,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:36,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:37,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:37,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 271 transitions, 3135 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) [2024-06-28 03:41:37,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:37,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:37,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:37,616 INFO L124 PetriNetUnfolderBase]: 682/1237 cut-off events. [2024-06-28 03:41:37,616 INFO L125 PetriNetUnfolderBase]: For 116681/116681 co-relation queries the response was YES. [2024-06-28 03:41:37,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7475 conditions, 1237 events. 682/1237 cut-off events. For 116681/116681 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6569 event pairs, 53 based on Foata normal form. 8/1243 useless extension candidates. Maximal degree in co-relation 7365. Up to 422 conditions per place. [2024-06-28 03:41:37,632 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 167 changer transitions 16/299 dead transitions. [2024-06-28 03:41:37,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 299 transitions, 4005 flow [2024-06-28 03:41:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:37,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:41:37,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:41:37,633 INFO L175 Difference]: Start difference. First operand has 300 places, 271 transitions, 3135 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:41:37,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 299 transitions, 4005 flow [2024-06-28 03:41:37,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 299 transitions, 3822 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:41:37,991 INFO L231 Difference]: Finished difference. Result has 292 places, 266 transitions, 3233 flow [2024-06-28 03:41:37,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3233, PETRI_PLACES=292, PETRI_TRANSITIONS=266} [2024-06-28 03:41:37,991 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 03:41:37,991 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 266 transitions, 3233 flow [2024-06-28 03:41:37,991 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) [2024-06-28 03:41:37,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:37,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:37,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:41:37,992 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)] === [2024-06-28 03:41:37,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:37,992 INFO L85 PathProgramCache]: Analyzing trace with hash -121458837, now seen corresponding path program 12 times [2024-06-28 03:41:37,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:37,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473534916] [2024-06-28 03:41:37,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:37,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473534916] [2024-06-28 03:41:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473534916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067188819] [2024-06-28 03:41:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:38,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:39,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:39,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 266 transitions, 3233 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) [2024-06-28 03:41:39,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:39,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:39,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:39,626 INFO L124 PetriNetUnfolderBase]: 688/1255 cut-off events. [2024-06-28 03:41:39,626 INFO L125 PetriNetUnfolderBase]: For 149833/149833 co-relation queries the response was YES. [2024-06-28 03:41:39,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8517 conditions, 1255 events. 688/1255 cut-off events. For 149833/149833 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6659 event pairs, 70 based on Foata normal form. 8/1261 useless extension candidates. Maximal degree in co-relation 8410. Up to 518 conditions per place. [2024-06-28 03:41:39,638 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 167 changer transitions 12/295 dead transitions. [2024-06-28 03:41:39,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 295 transitions, 4099 flow [2024-06-28 03:41:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:39,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:41:39,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:41:39,639 INFO L175 Difference]: Start difference. First operand has 292 places, 266 transitions, 3233 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:41:39,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 295 transitions, 4099 flow [2024-06-28 03:41:40,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 295 transitions, 3832 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:40,078 INFO L231 Difference]: Finished difference. Result has 288 places, 262 transitions, 3267 flow [2024-06-28 03:41:40,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3267, PETRI_PLACES=288, PETRI_TRANSITIONS=262} [2024-06-28 03:41:40,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:41:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 262 transitions, 3267 flow [2024-06-28 03:41:40,078 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) [2024-06-28 03:41:40,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:40,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:40,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:41:40,079 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)] === [2024-06-28 03:41:40,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash 330433327, now seen corresponding path program 13 times [2024-06-28 03:41:40,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:40,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530266100] [2024-06-28 03:41:40,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:40,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:41,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:41,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530266100] [2024-06-28 03:41:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530266100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:41,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:41,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:41,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140986118] [2024-06-28 03:41:41,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:41,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:41,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:41,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:41,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 262 transitions, 3267 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) [2024-06-28 03:41:41,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:41,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:41,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:41,638 INFO L124 PetriNetUnfolderBase]: 676/1235 cut-off events. [2024-06-28 03:41:41,638 INFO L125 PetriNetUnfolderBase]: For 143531/143531 co-relation queries the response was YES. [2024-06-28 03:41:41,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 1235 events. 676/1235 cut-off events. For 143531/143531 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6580 event pairs, 58 based on Foata normal form. 8/1241 useless extension candidates. Maximal degree in co-relation 8496. Up to 518 conditions per place. [2024-06-28 03:41:41,653 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 112 selfloop transitions, 167 changer transitions 9/290 dead transitions. [2024-06-28 03:41:41,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 290 transitions, 4117 flow [2024-06-28 03:41:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 03:41:41,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:41,654 INFO L175 Difference]: Start difference. First operand has 288 places, 262 transitions, 3267 flow. Second operand 11 states and 132 transitions. [2024-06-28 03:41:41,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 290 transitions, 4117 flow [2024-06-28 03:41:42,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 290 transitions, 3677 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:42,010 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 3127 flow [2024-06-28 03:41:42,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3127, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2024-06-28 03:41:42,010 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-28 03:41:42,010 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 3127 flow [2024-06-28 03:41:42,010 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) [2024-06-28 03:41:42,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:42,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:42,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:41:42,011 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)] === [2024-06-28 03:41:42,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 330438907, now seen corresponding path program 14 times [2024-06-28 03:41:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:42,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646296029] [2024-06-28 03:41:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:42,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:42,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646296029] [2024-06-28 03:41:42,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646296029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:42,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:42,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511840688] [2024-06-28 03:41:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:42,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:42,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:42,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 3127 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:42,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:42,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:43,389 INFO L124 PetriNetUnfolderBase]: 676/1239 cut-off events. [2024-06-28 03:41:43,389 INFO L125 PetriNetUnfolderBase]: For 151922/151922 co-relation queries the response was YES. [2024-06-28 03:41:43,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8465 conditions, 1239 events. 676/1239 cut-off events. For 151922/151922 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6582 event pairs, 155 based on Foata normal form. 12/1249 useless extension candidates. Maximal degree in co-relation 8361. Up to 786 conditions per place. [2024-06-28 03:41:43,400 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 169 selfloop transitions, 98 changer transitions 10/279 dead transitions. [2024-06-28 03:41:43,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 279 transitions, 3757 flow [2024-06-28 03:41:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:41:43,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:41:43,401 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 3127 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:41:43,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 279 transitions, 3757 flow [2024-06-28 03:41:43,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 279 transitions, 3382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:43,707 INFO L231 Difference]: Finished difference. Result has 285 places, 254 transitions, 2900 flow [2024-06-28 03:41:43,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2752, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2900, PETRI_PLACES=285, PETRI_TRANSITIONS=254} [2024-06-28 03:41:43,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:41:43,708 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 254 transitions, 2900 flow [2024-06-28 03:41:43,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:43,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:41:43,708 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)] === [2024-06-28 03:41:43,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash 468817327, now seen corresponding path program 15 times [2024-06-28 03:41:43,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:43,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651420963] [2024-06-28 03:41:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:45,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:45,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651420963] [2024-06-28 03:41:45,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651420963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719938018] [2024-06-28 03:41:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:45,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:45,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 254 transitions, 2900 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) [2024-06-28 03:41:45,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:45,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:45,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:45,780 INFO L124 PetriNetUnfolderBase]: 720/1328 cut-off events. [2024-06-28 03:41:45,780 INFO L125 PetriNetUnfolderBase]: For 202510/202510 co-relation queries the response was YES. [2024-06-28 03:41:45,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9992 conditions, 1328 events. 720/1328 cut-off events. For 202510/202510 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7151 event pairs, 101 based on Foata normal form. 8/1334 useless extension candidates. Maximal degree in co-relation 9888. Up to 448 conditions per place. [2024-06-28 03:41:45,793 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 139 changer transitions 11/286 dead transitions. [2024-06-28 03:41:45,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 286 transitions, 3775 flow [2024-06-28 03:41:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 03:41:45,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 03:41:45,794 INFO L175 Difference]: Start difference. First operand has 285 places, 254 transitions, 2900 flow. Second operand 11 states and 136 transitions. [2024-06-28 03:41:45,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 286 transitions, 3775 flow [2024-06-28 03:41:46,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 286 transitions, 3628 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:46,210 INFO L231 Difference]: Finished difference. Result has 288 places, 253 transitions, 3009 flow [2024-06-28 03:41:46,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3009, PETRI_PLACES=288, PETRI_TRANSITIONS=253} [2024-06-28 03:41:46,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 03:41:46,210 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 253 transitions, 3009 flow [2024-06-28 03:41:46,211 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) [2024-06-28 03:41:46,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:46,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:41:46,211 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)] === [2024-06-28 03:41:46,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:46,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1526758477, now seen corresponding path program 1 times [2024-06-28 03:41:46,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:46,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847893677] [2024-06-28 03:41:46,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:46,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847893677] [2024-06-28 03:41:47,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847893677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:47,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:47,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:47,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468393149] [2024-06-28 03:41:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:47,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:47,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:47,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:47,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:47,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:47,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 253 transitions, 3009 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) [2024-06-28 03:41:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:47,917 INFO L124 PetriNetUnfolderBase]: 700/1288 cut-off events. [2024-06-28 03:41:47,917 INFO L125 PetriNetUnfolderBase]: For 181856/181856 co-relation queries the response was YES. [2024-06-28 03:41:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10012 conditions, 1288 events. 700/1288 cut-off events. For 181856/181856 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6906 event pairs, 127 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9907. Up to 690 conditions per place. [2024-06-28 03:41:47,928 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 146 changer transitions 0/268 dead transitions. [2024-06-28 03:41:47,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 268 transitions, 3595 flow [2024-06-28 03:41:47,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:47,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:41:47,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:41:47,929 INFO L175 Difference]: Start difference. First operand has 288 places, 253 transitions, 3009 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:41:47,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 268 transitions, 3595 flow [2024-06-28 03:41:48,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 268 transitions, 3449 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:48,369 INFO L231 Difference]: Finished difference. Result has 287 places, 254 transitions, 3178 flow [2024-06-28 03:41:48,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2863, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3178, PETRI_PLACES=287, PETRI_TRANSITIONS=254} [2024-06-28 03:41:48,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 03:41:48,369 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 254 transitions, 3178 flow [2024-06-28 03:41:48,369 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) [2024-06-28 03:41:48,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:48,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:48,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:41:48,370 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)] === [2024-06-28 03:41:48,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash 474531247, now seen corresponding path program 16 times [2024-06-28 03:41:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999758746] [2024-06-28 03:41:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:48,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:49,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:49,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999758746] [2024-06-28 03:41:49,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999758746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:49,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:49,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465812263] [2024-06-28 03:41:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:49,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:49,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:49,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 254 transitions, 3178 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) [2024-06-28 03:41:49,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:49,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:49,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:50,175 INFO L124 PetriNetUnfolderBase]: 713/1319 cut-off events. [2024-06-28 03:41:50,175 INFO L125 PetriNetUnfolderBase]: For 212293/212293 co-relation queries the response was YES. [2024-06-28 03:41:50,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10072 conditions, 1319 events. 713/1319 cut-off events. For 212293/212293 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7151 event pairs, 98 based on Foata normal form. 12/1329 useless extension candidates. Maximal degree in co-relation 9969. Up to 929 conditions per place. [2024-06-28 03:41:50,187 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 93 changer transitions 13/278 dead transitions. [2024-06-28 03:41:50,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 278 transitions, 3828 flow [2024-06-28 03:41:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:50,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:41:50,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:41:50,188 INFO L175 Difference]: Start difference. First operand has 287 places, 254 transitions, 3178 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:41:50,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 278 transitions, 3828 flow [2024-06-28 03:41:50,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 278 transitions, 3525 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:50,605 INFO L231 Difference]: Finished difference. Result has 290 places, 249 transitions, 3014 flow [2024-06-28 03:41:50,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2875, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3014, PETRI_PLACES=290, PETRI_TRANSITIONS=249} [2024-06-28 03:41:50,606 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:41:50,606 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 249 transitions, 3014 flow [2024-06-28 03:41:50,606 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) [2024-06-28 03:41:50,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:50,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:50,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:41:50,606 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)] === [2024-06-28 03:41:50,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1526750541, now seen corresponding path program 17 times [2024-06-28 03:41:50,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:50,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321513163] [2024-06-28 03:41:50,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:50,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321513163] [2024-06-28 03:41:51,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321513163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:51,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:51,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375547712] [2024-06-28 03:41:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:51,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:52,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:52,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 249 transitions, 3014 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) [2024-06-28 03:41:52,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:52,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:52,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:52,563 INFO L124 PetriNetUnfolderBase]: 693/1291 cut-off events. [2024-06-28 03:41:52,563 INFO L125 PetriNetUnfolderBase]: For 208623/208623 co-relation queries the response was YES. [2024-06-28 03:41:52,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9789 conditions, 1291 events. 693/1291 cut-off events. For 208623/208623 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7004 event pairs, 108 based on Foata normal form. 10/1299 useless extension candidates. Maximal degree in co-relation 9685. Up to 905 conditions per place. [2024-06-28 03:41:52,575 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 79 changer transitions 13/270 dead transitions. [2024-06-28 03:41:52,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 270 transitions, 3618 flow [2024-06-28 03:41:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:41:52,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:41:52,576 INFO L175 Difference]: Start difference. First operand has 290 places, 249 transitions, 3014 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:41:52,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 270 transitions, 3618 flow [2024-06-28 03:41:52,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 270 transitions, 3416 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:52,984 INFO L231 Difference]: Finished difference. Result has 290 places, 243 transitions, 2915 flow [2024-06-28 03:41:52,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2915, PETRI_PLACES=290, PETRI_TRANSITIONS=243} [2024-06-28 03:41:52,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 03:41:52,984 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 243 transitions, 2915 flow [2024-06-28 03:41:52,984 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) [2024-06-28 03:41:52,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:52,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:41:52,985 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)] === [2024-06-28 03:41:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1526543151, now seen corresponding path program 18 times [2024-06-28 03:41:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871037552] [2024-06-28 03:41:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:52,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871037552] [2024-06-28 03:41:54,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871037552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:54,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:54,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:54,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750475717] [2024-06-28 03:41:54,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:54,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:54,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:54,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:54,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:54,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:54,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 243 transitions, 2915 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) [2024-06-28 03:41:54,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:54,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:54,817 INFO L124 PetriNetUnfolderBase]: 698/1314 cut-off events. [2024-06-28 03:41:54,817 INFO L125 PetriNetUnfolderBase]: For 233564/233564 co-relation queries the response was YES. [2024-06-28 03:41:54,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10529 conditions, 1314 events. 698/1314 cut-off events. For 233564/233564 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7251 event pairs, 113 based on Foata normal form. 8/1320 useless extension candidates. Maximal degree in co-relation 10425. Up to 843 conditions per place. [2024-06-28 03:41:54,829 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 173 selfloop transitions, 85 changer transitions 9/269 dead transitions. [2024-06-28 03:41:54,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 269 transitions, 3705 flow [2024-06-28 03:41:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:41:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:41:54,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 03:41:54,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:41:54,830 INFO L175 Difference]: Start difference. First operand has 290 places, 243 transitions, 2915 flow. Second operand 12 states and 136 transitions. [2024-06-28 03:41:54,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 269 transitions, 3705 flow [2024-06-28 03:41:55,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 3431 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 03:41:55,347 INFO L231 Difference]: Finished difference. Result has 285 places, 240 transitions, 2785 flow [2024-06-28 03:41:55,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2647, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2785, PETRI_PLACES=285, PETRI_TRANSITIONS=240} [2024-06-28 03:41:55,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 03:41:55,347 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 240 transitions, 2785 flow [2024-06-28 03:41:55,348 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) [2024-06-28 03:41:55,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:55,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:41:55,348 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)] === [2024-06-28 03:41:55,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1526548731, now seen corresponding path program 19 times [2024-06-28 03:41:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734225720] [2024-06-28 03:41:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734225720] [2024-06-28 03:41:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734225720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450443420] [2024-06-28 03:41:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:56,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:56,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:56,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 240 transitions, 2785 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) [2024-06-28 03:41:56,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:56,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:56,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:57,072 INFO L124 PetriNetUnfolderBase]: 694/1310 cut-off events. [2024-06-28 03:41:57,072 INFO L125 PetriNetUnfolderBase]: For 229391/229391 co-relation queries the response was YES. [2024-06-28 03:41:57,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10356 conditions, 1310 events. 694/1310 cut-off events. For 229391/229391 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7267 event pairs, 121 based on Foata normal form. 10/1318 useless extension candidates. Maximal degree in co-relation 10254. Up to 914 conditions per place. [2024-06-28 03:41:57,084 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 164 selfloop transitions, 78 changer transitions 17/261 dead transitions. [2024-06-28 03:41:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 261 transitions, 3371 flow [2024-06-28 03:41:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:41:57,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:41:57,085 INFO L175 Difference]: Start difference. First operand has 285 places, 240 transitions, 2785 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:41:57,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 261 transitions, 3371 flow [2024-06-28 03:41:57,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 261 transitions, 3205 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:57,548 INFO L231 Difference]: Finished difference. Result has 283 places, 232 transitions, 2693 flow [2024-06-28 03:41:57,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2693, PETRI_PLACES=283, PETRI_TRANSITIONS=232} [2024-06-28 03:41:57,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 03:41:57,548 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 232 transitions, 2693 flow [2024-06-28 03:41:57,548 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) [2024-06-28 03:41:57,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:57,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:57,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:41:57,549 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)] === [2024-06-28 03:41:57,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1534167787, now seen corresponding path program 2 times [2024-06-28 03:41:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367414375] [2024-06-28 03:41:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:58,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367414375] [2024-06-28 03:41:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367414375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:58,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:41:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114239575] [2024-06-28 03:41:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:41:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:41:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:41:58,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:58,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 232 transitions, 2693 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) [2024-06-28 03:41:58,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:58,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:58,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:59,287 INFO L124 PetriNetUnfolderBase]: 664/1252 cut-off events. [2024-06-28 03:41:59,287 INFO L125 PetriNetUnfolderBase]: For 196323/196323 co-relation queries the response was YES. [2024-06-28 03:41:59,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10101 conditions, 1252 events. 664/1252 cut-off events. For 196323/196323 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6840 event pairs, 136 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 10000. Up to 704 conditions per place. [2024-06-28 03:41:59,297 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 131 changer transitions 0/246 dead transitions. [2024-06-28 03:41:59,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 246 transitions, 3233 flow [2024-06-28 03:41:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:41:59,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:41:59,299 INFO L175 Difference]: Start difference. First operand has 283 places, 232 transitions, 2693 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:41:59,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 246 transitions, 3233 flow [2024-06-28 03:41:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 246 transitions, 3071 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:41:59,715 INFO L231 Difference]: Finished difference. Result has 278 places, 233 transitions, 2818 flow [2024-06-28 03:41:59,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2818, PETRI_PLACES=278, PETRI_TRANSITIONS=233} [2024-06-28 03:41:59,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-28 03:41:59,715 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 233 transitions, 2818 flow [2024-06-28 03:41:59,715 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) [2024-06-28 03:41:59,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:59,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:41:59,715 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)] === [2024-06-28 03:41:59,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1534177087, now seen corresponding path program 3 times [2024-06-28 03:41:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882029552] [2024-06-28 03:41:59,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:59,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:00,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:00,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882029552] [2024-06-28 03:42:00,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882029552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:00,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:00,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:00,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304709680] [2024-06-28 03:42:00,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:00,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:00,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:00,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:00,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 233 transitions, 2818 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) [2024-06-28 03:42:00,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:00,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:00,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:01,444 INFO L124 PetriNetUnfolderBase]: 675/1273 cut-off events. [2024-06-28 03:42:01,444 INFO L125 PetriNetUnfolderBase]: For 194675/194675 co-relation queries the response was YES. [2024-06-28 03:42:01,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1273 events. 675/1273 cut-off events. For 194675/194675 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7013 event pairs, 133 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 10330. Up to 595 conditions per place. [2024-06-28 03:42:01,455 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 136 changer transitions 0/253 dead transitions. [2024-06-28 03:42:01,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 253 transitions, 3576 flow [2024-06-28 03:42:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:42:01,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:42:01,456 INFO L175 Difference]: Start difference. First operand has 278 places, 233 transitions, 2818 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:42:01,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 253 transitions, 3576 flow [2024-06-28 03:42:01,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 253 transitions, 3301 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:01,930 INFO L231 Difference]: Finished difference. Result has 280 places, 235 transitions, 2862 flow [2024-06-28 03:42:01,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2862, PETRI_PLACES=280, PETRI_TRANSITIONS=235} [2024-06-28 03:42:01,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:42:01,930 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 235 transitions, 2862 flow [2024-06-28 03:42:01,931 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) [2024-06-28 03:42:01,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:01,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:01,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:42:01,931 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)] === [2024-06-28 03:42:01,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1533900381, now seen corresponding path program 20 times [2024-06-28 03:42:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614416984] [2024-06-28 03:42:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:03,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:03,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614416984] [2024-06-28 03:42:03,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614416984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:03,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:03,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646284684] [2024-06-28 03:42:03,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:03,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:03,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:03,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:03,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:03,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:03,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 235 transitions, 2862 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) [2024-06-28 03:42:03,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:03,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:03,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:03,703 INFO L124 PetriNetUnfolderBase]: 662/1250 cut-off events. [2024-06-28 03:42:03,703 INFO L125 PetriNetUnfolderBase]: For 192445/192445 co-relation queries the response was YES. [2024-06-28 03:42:03,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9612 conditions, 1250 events. 662/1250 cut-off events. For 192445/192445 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6856 event pairs, 105 based on Foata normal form. 10/1258 useless extension candidates. Maximal degree in co-relation 9512. Up to 872 conditions per place. [2024-06-28 03:42:03,712 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 78 changer transitions 15/255 dead transitions. [2024-06-28 03:42:03,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 255 transitions, 3432 flow [2024-06-28 03:42:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:42:03,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:42:03,713 INFO L175 Difference]: Start difference. First operand has 280 places, 235 transitions, 2862 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:42:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 255 transitions, 3432 flow [2024-06-28 03:42:04,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 255 transitions, 3219 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:04,136 INFO L231 Difference]: Finished difference. Result has 284 places, 229 transitions, 2737 flow [2024-06-28 03:42:04,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2737, PETRI_PLACES=284, PETRI_TRANSITIONS=229} [2024-06-28 03:42:04,136 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-28 03:42:04,136 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 229 transitions, 2737 flow [2024-06-28 03:42:04,136 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) [2024-06-28 03:42:04,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:04,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:04,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:42:04,137 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)] === [2024-06-28 03:42:04,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:04,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1332819067, now seen corresponding path program 4 times [2024-06-28 03:42:04,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659336737] [2024-06-28 03:42:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:05,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659336737] [2024-06-28 03:42:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659336737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:05,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181529377] [2024-06-28 03:42:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:05,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:05,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 229 transitions, 2737 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) [2024-06-28 03:42:05,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:05,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:05,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:05,859 INFO L124 PetriNetUnfolderBase]: 623/1181 cut-off events. [2024-06-28 03:42:05,859 INFO L125 PetriNetUnfolderBase]: For 161993/161993 co-relation queries the response was YES. [2024-06-28 03:42:05,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9199 conditions, 1181 events. 623/1181 cut-off events. For 161993/161993 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6414 event pairs, 100 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 9098. Up to 859 conditions per place. [2024-06-28 03:42:05,869 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 168 selfloop transitions, 73 changer transitions 1/244 dead transitions. [2024-06-28 03:42:05,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 244 transitions, 3263 flow [2024-06-28 03:42:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:42:05,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:42:05,870 INFO L175 Difference]: Start difference. First operand has 284 places, 229 transitions, 2737 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:42:05,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 244 transitions, 3263 flow [2024-06-28 03:42:06,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 244 transitions, 3103 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:06,204 INFO L231 Difference]: Finished difference. Result has 280 places, 229 transitions, 2728 flow [2024-06-28 03:42:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2728, PETRI_PLACES=280, PETRI_TRANSITIONS=229} [2024-06-28 03:42:06,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:42:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 229 transitions, 2728 flow [2024-06-28 03:42:06,205 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) [2024-06-28 03:42:06,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:06,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:06,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:42:06,206 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)] === [2024-06-28 03:42:06,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash 468967057, now seen corresponding path program 21 times [2024-06-28 03:42:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:06,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916220021] [2024-06-28 03:42:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:06,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:07,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:07,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916220021] [2024-06-28 03:42:07,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916220021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:07,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90714769] [2024-06-28 03:42:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:07,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:07,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 229 transitions, 2728 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:07,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:07,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:07,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:07,666 INFO L124 PetriNetUnfolderBase]: 655/1253 cut-off events. [2024-06-28 03:42:07,666 INFO L125 PetriNetUnfolderBase]: For 218814/218814 co-relation queries the response was YES. [2024-06-28 03:42:07,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9334 conditions, 1253 events. 655/1253 cut-off events. For 218814/218814 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6976 event pairs, 106 based on Foata normal form. 20/1271 useless extension candidates. Maximal degree in co-relation 9234. Up to 645 conditions per place. [2024-06-28 03:42:07,677 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 97 selfloop transitions, 130 changer transitions 22/251 dead transitions. [2024-06-28 03:42:07,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 251 transitions, 3303 flow [2024-06-28 03:42:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:07,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:42:07,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:42:07,678 INFO L175 Difference]: Start difference. First operand has 280 places, 229 transitions, 2728 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:42:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 251 transitions, 3303 flow [2024-06-28 03:42:08,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 3123 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:08,109 INFO L231 Difference]: Finished difference. Result has 281 places, 216 transitions, 2681 flow [2024-06-28 03:42:08,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2548, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2681, PETRI_PLACES=281, PETRI_TRANSITIONS=216} [2024-06-28 03:42:08,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:42:08,110 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 216 transitions, 2681 flow [2024-06-28 03:42:08,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:08,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:08,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:08,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:42:08,110 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)] === [2024-06-28 03:42:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1332811131, now seen corresponding path program 22 times [2024-06-28 03:42:08,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:08,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377552529] [2024-06-28 03:42:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:08,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377552529] [2024-06-28 03:42:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377552529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:09,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:09,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126220717] [2024-06-28 03:42:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:09,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:09,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:09,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:09,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:09,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 216 transitions, 2681 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) [2024-06-28 03:42:09,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:09,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:09,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:09,830 INFO L124 PetriNetUnfolderBase]: 605/1167 cut-off events. [2024-06-28 03:42:09,830 INFO L125 PetriNetUnfolderBase]: For 189471/189471 co-relation queries the response was YES. [2024-06-28 03:42:09,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 1167 events. 605/1167 cut-off events. For 189471/189471 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6413 event pairs, 110 based on Foata normal form. 10/1175 useless extension candidates. Maximal degree in co-relation 9002. Up to 781 conditions per place. [2024-06-28 03:42:09,840 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 71 changer transitions 13/237 dead transitions. [2024-06-28 03:42:09,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 237 transitions, 3219 flow [2024-06-28 03:42:09,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:09,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:42:09,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:42:09,841 INFO L175 Difference]: Start difference. First operand has 281 places, 216 transitions, 2681 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:42:09,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 237 transitions, 3219 flow [2024-06-28 03:42:10,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 237 transitions, 2861 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:42:10,181 INFO L231 Difference]: Finished difference. Result has 274 places, 210 transitions, 2408 flow [2024-06-28 03:42:10,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=274, PETRI_TRANSITIONS=210} [2024-06-28 03:42:10,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 03:42:10,182 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 210 transitions, 2408 flow [2024-06-28 03:42:10,182 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) [2024-06-28 03:42:10,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:10,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:10,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:42:10,182 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)] === [2024-06-28 03:42:10,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 468961477, now seen corresponding path program 23 times [2024-06-28 03:42:10,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:10,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757778499] [2024-06-28 03:42:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:11,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:11,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757778499] [2024-06-28 03:42:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757778499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:11,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:11,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:11,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047676321] [2024-06-28 03:42:11,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:11,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:11,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:11,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:11,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:11,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 210 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:11,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:11,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:11,695 INFO L124 PetriNetUnfolderBase]: 593/1159 cut-off events. [2024-06-28 03:42:11,695 INFO L125 PetriNetUnfolderBase]: For 194734/194734 co-relation queries the response was YES. [2024-06-28 03:42:11,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8642 conditions, 1159 events. 593/1159 cut-off events. For 194734/194734 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6423 event pairs, 104 based on Foata normal form. 16/1173 useless extension candidates. Maximal degree in co-relation 8544. Up to 599 conditions per place. [2024-06-28 03:42:11,706 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 112 changer transitions 24/231 dead transitions. [2024-06-28 03:42:11,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 231 transitions, 2935 flow [2024-06-28 03:42:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:11,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:42:11,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:42:11,707 INFO L175 Difference]: Start difference. First operand has 274 places, 210 transitions, 2408 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:42:11,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 231 transitions, 2935 flow [2024-06-28 03:42:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 231 transitions, 2786 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:12,098 INFO L231 Difference]: Finished difference. Result has 271 places, 195 transitions, 2303 flow [2024-06-28 03:42:12,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2303, PETRI_PLACES=271, PETRI_TRANSITIONS=195} [2024-06-28 03:42:12,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 03:42:12,099 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 195 transitions, 2303 flow [2024-06-28 03:42:12,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:12,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:12,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:42:12,099 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)] === [2024-06-28 03:42:12,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1478301913, now seen corresponding path program 24 times [2024-06-28 03:42:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248716187] [2024-06-28 03:42:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:13,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:13,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:13,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248716187] [2024-06-28 03:42:13,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248716187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:13,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:13,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:13,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372983831] [2024-06-28 03:42:13,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:13,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:13,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:13,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 195 transitions, 2303 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) [2024-06-28 03:42:13,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:13,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:13,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:13,780 INFO L124 PetriNetUnfolderBase]: 581/1135 cut-off events. [2024-06-28 03:42:13,780 INFO L125 PetriNetUnfolderBase]: For 195997/195997 co-relation queries the response was YES. [2024-06-28 03:42:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9311 conditions, 1135 events. 581/1135 cut-off events. For 195997/195997 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6230 event pairs, 130 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 9214. Up to 555 conditions per place. [2024-06-28 03:42:13,789 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 92 changer transitions 8/220 dead transitions. [2024-06-28 03:42:13,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 220 transitions, 2979 flow [2024-06-28 03:42:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:13,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 03:42:13,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 03:42:13,790 INFO L175 Difference]: Start difference. First operand has 271 places, 195 transitions, 2303 flow. Second operand 11 states and 133 transitions. [2024-06-28 03:42:13,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 220 transitions, 2979 flow [2024-06-28 03:42:14,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 220 transitions, 2631 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:42:14,191 INFO L231 Difference]: Finished difference. Result has 257 places, 192 transitions, 2115 flow [2024-06-28 03:42:14,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2115, PETRI_PLACES=257, PETRI_TRANSITIONS=192} [2024-06-28 03:42:14,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:42:14,191 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 192 transitions, 2115 flow [2024-06-28 03:42:14,191 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) [2024-06-28 03:42:14,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:14,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:14,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:42:14,191 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)] === [2024-06-28 03:42:14,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1478307493, now seen corresponding path program 25 times [2024-06-28 03:42:14,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:14,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875162868] [2024-06-28 03:42:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:14,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875162868] [2024-06-28 03:42:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875162868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:15,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:15,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417977704] [2024-06-28 03:42:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:15,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:15,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 192 transitions, 2115 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) [2024-06-28 03:42:15,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:15,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:15,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:15,831 INFO L124 PetriNetUnfolderBase]: 548/1072 cut-off events. [2024-06-28 03:42:15,831 INFO L125 PetriNetUnfolderBase]: For 162297/162297 co-relation queries the response was YES. [2024-06-28 03:42:15,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8102 conditions, 1072 events. 548/1072 cut-off events. For 162297/162297 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5800 event pairs, 110 based on Foata normal form. 10/1080 useless extension candidates. Maximal degree in co-relation 8007. Up to 692 conditions per place. [2024-06-28 03:42:15,844 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 64 changer transitions 18/213 dead transitions. [2024-06-28 03:42:15,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 213 transitions, 2605 flow [2024-06-28 03:42:15,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:15,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:42:15,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:42:15,845 INFO L175 Difference]: Start difference. First operand has 257 places, 192 transitions, 2115 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:42:15,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 213 transitions, 2605 flow [2024-06-28 03:42:16,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 213 transitions, 2417 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:16,096 INFO L231 Difference]: Finished difference. Result has 255 places, 184 transitions, 1979 flow [2024-06-28 03:42:16,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1979, PETRI_PLACES=255, PETRI_TRANSITIONS=184} [2024-06-28 03:42:16,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 03:42:16,096 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 184 transitions, 1979 flow [2024-06-28 03:42:16,096 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) [2024-06-28 03:42:16,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:16,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:16,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:42:16,097 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)] === [2024-06-28 03:42:16,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1472795383, now seen corresponding path program 26 times [2024-06-28 03:42:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367158399] [2024-06-28 03:42:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:17,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:17,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367158399] [2024-06-28 03:42:17,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367158399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:17,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:17,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836514261] [2024-06-28 03:42:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:17,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:17,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 184 transitions, 1979 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) [2024-06-28 03:42:17,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:17,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:17,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:17,634 INFO L124 PetriNetUnfolderBase]: 530/1042 cut-off events. [2024-06-28 03:42:17,634 INFO L125 PetriNetUnfolderBase]: For 152189/152189 co-relation queries the response was YES. [2024-06-28 03:42:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1042 events. 530/1042 cut-off events. For 152189/152189 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5606 event pairs, 114 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 7733. Up to 527 conditions per place. [2024-06-28 03:42:17,643 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 82 changer transitions 15/205 dead transitions. [2024-06-28 03:42:17,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 205 transitions, 2444 flow [2024-06-28 03:42:17,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:42:17,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:42:17,644 INFO L175 Difference]: Start difference. First operand has 255 places, 184 transitions, 1979 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:42:17,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 205 transitions, 2444 flow [2024-06-28 03:42:17,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 205 transitions, 2310 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:17,917 INFO L231 Difference]: Finished difference. Result has 252 places, 179 transitions, 1946 flow [2024-06-28 03:42:17,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1946, PETRI_PLACES=252, PETRI_TRANSITIONS=179} [2024-06-28 03:42:17,918 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-28 03:42:17,918 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 179 transitions, 1946 flow [2024-06-28 03:42:17,918 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) [2024-06-28 03:42:17,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:17,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:17,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:42:17,918 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)] === [2024-06-28 03:42:17,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash 620027609, now seen corresponding path program 27 times [2024-06-28 03:42:17,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:17,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279219497] [2024-06-28 03:42:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:17,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279219497] [2024-06-28 03:42:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279219497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203902513] [2024-06-28 03:42:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:19,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:19,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 179 transitions, 1946 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) [2024-06-28 03:42:19,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:19,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:19,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:19,589 INFO L124 PetriNetUnfolderBase]: 513/1011 cut-off events. [2024-06-28 03:42:19,589 INFO L125 PetriNetUnfolderBase]: For 144383/144383 co-relation queries the response was YES. [2024-06-28 03:42:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7510 conditions, 1011 events. 513/1011 cut-off events. For 144383/144383 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5418 event pairs, 107 based on Foata normal form. 10/1019 useless extension candidates. Maximal degree in co-relation 7417. Up to 631 conditions per place. [2024-06-28 03:42:19,598 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 77 changer transitions 15/202 dead transitions. [2024-06-28 03:42:19,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 202 transitions, 2425 flow [2024-06-28 03:42:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:42:19,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:42:19,599 INFO L175 Difference]: Start difference. First operand has 252 places, 179 transitions, 1946 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:42:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 202 transitions, 2425 flow [2024-06-28 03:42:19,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 202 transitions, 2242 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:19,851 INFO L231 Difference]: Finished difference. Result has 246 places, 173 transitions, 1863 flow [2024-06-28 03:42:19,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1863, PETRI_PLACES=246, PETRI_TRANSITIONS=173} [2024-06-28 03:42:19,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 03:42:19,851 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 173 transitions, 1863 flow [2024-06-28 03:42:19,851 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) [2024-06-28 03:42:19,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:19,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:19,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:42:19,851 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)] === [2024-06-28 03:42:19,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 620022029, now seen corresponding path program 28 times [2024-06-28 03:42:19,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:19,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180597553] [2024-06-28 03:42:19,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:19,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180597553] [2024-06-28 03:42:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180597553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922711841] [2024-06-28 03:42:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:21,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:21,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 173 transitions, 1863 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) [2024-06-28 03:42:21,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:21,448 INFO L124 PetriNetUnfolderBase]: 471/933 cut-off events. [2024-06-28 03:42:21,448 INFO L125 PetriNetUnfolderBase]: For 116861/116861 co-relation queries the response was YES. [2024-06-28 03:42:21,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 933 events. 471/933 cut-off events. For 116861/116861 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4872 event pairs, 79 based on Foata normal form. 8/939 useless extension candidates. Maximal degree in co-relation 6518. Up to 391 conditions per place. [2024-06-28 03:42:21,454 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 97 selfloop transitions, 89 changer transitions 11/199 dead transitions. [2024-06-28 03:42:21,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 199 transitions, 2494 flow [2024-06-28 03:42:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:42:21,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:42:21,455 INFO L175 Difference]: Start difference. First operand has 246 places, 173 transitions, 1863 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:42:21,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 199 transitions, 2494 flow [2024-06-28 03:42:21,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 199 transitions, 2332 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:21,665 INFO L231 Difference]: Finished difference. Result has 244 places, 168 transitions, 1828 flow [2024-06-28 03:42:21,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1828, PETRI_PLACES=244, PETRI_TRANSITIONS=168} [2024-06-28 03:42:21,665 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-28 03:42:21,665 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 168 transitions, 1828 flow [2024-06-28 03:42:21,665 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) [2024-06-28 03:42:21,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:21,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:21,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:42:21,666 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)] === [2024-06-28 03:42:21,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1152708709, now seen corresponding path program 5 times [2024-06-28 03:42:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239599412] [2024-06-28 03:42:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239599412] [2024-06-28 03:42:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239599412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036327262] [2024-06-28 03:42:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:22,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:22,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:22,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 168 transitions, 1828 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) [2024-06-28 03:42:22,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:22,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:22,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:23,210 INFO L124 PetriNetUnfolderBase]: 453/895 cut-off events. [2024-06-28 03:42:23,210 INFO L125 PetriNetUnfolderBase]: For 97989/97989 co-relation queries the response was YES. [2024-06-28 03:42:23,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6494 conditions, 895 events. 453/895 cut-off events. For 97989/97989 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4628 event pairs, 138 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 6404. Up to 850 conditions per place. [2024-06-28 03:42:23,216 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2024-06-28 03:42:23,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 181 transitions, 2236 flow [2024-06-28 03:42:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:23,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:42:23,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:42:23,217 INFO L175 Difference]: Start difference. First operand has 244 places, 168 transitions, 1828 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:42:23,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 181 transitions, 2236 flow [2024-06-28 03:42:23,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 181 transitions, 2052 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:23,413 INFO L231 Difference]: Finished difference. Result has 238 places, 169 transitions, 1708 flow [2024-06-28 03:42:23,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1708, PETRI_PLACES=238, PETRI_TRANSITIONS=169} [2024-06-28 03:42:23,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:42:23,414 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 169 transitions, 1708 flow [2024-06-28 03:42:23,414 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) [2024-06-28 03:42:23,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:23,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:42:23,415 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)] === [2024-06-28 03:42:23,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 381644557, now seen corresponding path program 6 times [2024-06-28 03:42:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407170512] [2024-06-28 03:42:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:24,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407170512] [2024-06-28 03:42:24,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407170512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:24,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:24,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:24,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296843455] [2024-06-28 03:42:24,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:24,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:24,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:24,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:24,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:24,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 169 transitions, 1708 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) [2024-06-28 03:42:24,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:24,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:24,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:25,163 INFO L124 PetriNetUnfolderBase]: 457/903 cut-off events. [2024-06-28 03:42:25,164 INFO L125 PetriNetUnfolderBase]: For 92541/92541 co-relation queries the response was YES. [2024-06-28 03:42:25,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 903 events. 457/903 cut-off events. For 92541/92541 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4683 event pairs, 134 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 6226. Up to 831 conditions per place. [2024-06-28 03:42:25,170 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 28 changer transitions 0/183 dead transitions. [2024-06-28 03:42:25,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 183 transitions, 2126 flow [2024-06-28 03:42:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:25,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:42:25,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:42:25,171 INFO L175 Difference]: Start difference. First operand has 238 places, 169 transitions, 1708 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:42:25,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 183 transitions, 2126 flow [2024-06-28 03:42:25,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 183 transitions, 2047 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:25,413 INFO L231 Difference]: Finished difference. Result has 239 places, 170 transitions, 1713 flow [2024-06-28 03:42:25,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1713, PETRI_PLACES=239, PETRI_TRANSITIONS=170} [2024-06-28 03:42:25,414 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 03:42:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 170 transitions, 1713 flow [2024-06-28 03:42:25,414 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) [2024-06-28 03:42:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:25,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:42:25,415 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)] === [2024-06-28 03:42:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 181983291, now seen corresponding path program 29 times [2024-06-28 03:42:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329530528] [2024-06-28 03:42:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329530528] [2024-06-28 03:42:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329530528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862423366] [2024-06-28 03:42:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:26,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:26,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 170 transitions, 1713 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) [2024-06-28 03:42:26,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:26,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:26,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:27,061 INFO L124 PetriNetUnfolderBase]: 520/1036 cut-off events. [2024-06-28 03:42:27,061 INFO L125 PetriNetUnfolderBase]: For 156247/156247 co-relation queries the response was YES. [2024-06-28 03:42:27,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8021 conditions, 1036 events. 520/1036 cut-off events. For 156247/156247 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5606 event pairs, 165 based on Foata normal form. 8/1042 useless extension candidates. Maximal degree in co-relation 7932. Up to 710 conditions per place. [2024-06-28 03:42:27,069 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 36 changer transitions 11/195 dead transitions. [2024-06-28 03:42:27,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 195 transitions, 2343 flow [2024-06-28 03:42:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:42:27,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:42:27,070 INFO L175 Difference]: Start difference. First operand has 239 places, 170 transitions, 1713 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:42:27,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 195 transitions, 2343 flow [2024-06-28 03:42:27,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 195 transitions, 2269 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:27,395 INFO L231 Difference]: Finished difference. Result has 242 places, 166 transitions, 1680 flow [2024-06-28 03:42:27,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1680, PETRI_PLACES=242, PETRI_TRANSITIONS=166} [2024-06-28 03:42:27,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 03:42:27,395 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 166 transitions, 1680 flow [2024-06-28 03:42:27,396 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) [2024-06-28 03:42:27,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:27,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:27,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:42:27,396 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)] === [2024-06-28 03:42:27,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1551790093, now seen corresponding path program 7 times [2024-06-28 03:42:27,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016207918] [2024-06-28 03:42:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:28,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:28,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016207918] [2024-06-28 03:42:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016207918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:28,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034890594] [2024-06-28 03:42:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:28,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:28,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:28,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:28,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:28,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 166 transitions, 1680 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) [2024-06-28 03:42:28,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:28,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:28,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:29,034 INFO L124 PetriNetUnfolderBase]: 508/1008 cut-off events. [2024-06-28 03:42:29,034 INFO L125 PetriNetUnfolderBase]: For 151252/151252 co-relation queries the response was YES. [2024-06-28 03:42:29,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8212 conditions, 1008 events. 508/1008 cut-off events. For 151252/151252 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5373 event pairs, 167 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 8122. Up to 932 conditions per place. [2024-06-28 03:42:29,041 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-06-28 03:42:29,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 181 transitions, 2262 flow [2024-06-28 03:42:29,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:29,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:42:29,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 03:42:29,042 INFO L175 Difference]: Start difference. First operand has 242 places, 166 transitions, 1680 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:42:29,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 181 transitions, 2262 flow [2024-06-28 03:42:29,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 181 transitions, 2149 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:42:29,329 INFO L231 Difference]: Finished difference. Result has 235 places, 168 transitions, 1673 flow [2024-06-28 03:42:29,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1673, PETRI_PLACES=235, PETRI_TRANSITIONS=168} [2024-06-28 03:42:29,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-28 03:42:29,329 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 168 transitions, 1673 flow [2024-06-28 03:42:29,329 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) [2024-06-28 03:42:29,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:29,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:29,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:42:29,329 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)] === [2024-06-28 03:42:29,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:29,330 INFO L85 PathProgramCache]: Analyzing trace with hash 381636621, now seen corresponding path program 30 times [2024-06-28 03:42:29,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:29,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064259903] [2024-06-28 03:42:29,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:29,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:30,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:30,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064259903] [2024-06-28 03:42:30,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064259903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:30,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:30,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:30,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789633360] [2024-06-28 03:42:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:30,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:30,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:30,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:30,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 168 transitions, 1673 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) [2024-06-28 03:42:30,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:30,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:31,203 INFO L124 PetriNetUnfolderBase]: 524/1044 cut-off events. [2024-06-28 03:42:31,203 INFO L125 PetriNetUnfolderBase]: For 162375/162375 co-relation queries the response was YES. [2024-06-28 03:42:31,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8173 conditions, 1044 events. 524/1044 cut-off events. For 162375/162375 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5665 event pairs, 170 based on Foata normal form. 10/1052 useless extension candidates. Maximal degree in co-relation 8085. Up to 888 conditions per place. [2024-06-28 03:42:31,210 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 141 selfloop transitions, 34 changer transitions 11/188 dead transitions. [2024-06-28 03:42:31,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 188 transitions, 2109 flow [2024-06-28 03:42:31,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:31,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:42:31,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:42:31,211 INFO L175 Difference]: Start difference. First operand has 235 places, 168 transitions, 1673 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:42:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 188 transitions, 2109 flow [2024-06-28 03:42:31,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 188 transitions, 2058 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:31,500 INFO L231 Difference]: Finished difference. Result has 240 places, 165 transitions, 1663 flow [2024-06-28 03:42:31,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1663, PETRI_PLACES=240, PETRI_TRANSITIONS=165} [2024-06-28 03:42:31,500 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-28 03:42:31,500 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 165 transitions, 1663 flow [2024-06-28 03:42:31,500 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) [2024-06-28 03:42:31,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:31,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:42:31,501 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)] === [2024-06-28 03:42:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash 187495401, now seen corresponding path program 31 times [2024-06-28 03:42:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238696222] [2024-06-28 03:42:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:32,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:32,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238696222] [2024-06-28 03:42:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238696222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453599939] [2024-06-28 03:42:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:32,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 165 transitions, 1663 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) [2024-06-28 03:42:32,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:32,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:32,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:33,154 INFO L124 PetriNetUnfolderBase]: 518/1038 cut-off events. [2024-06-28 03:42:33,154 INFO L125 PetriNetUnfolderBase]: For 172749/172749 co-relation queries the response was YES. [2024-06-28 03:42:33,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8222 conditions, 1038 events. 518/1038 cut-off events. For 172749/172749 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5661 event pairs, 174 based on Foata normal form. 12/1048 useless extension candidates. Maximal degree in co-relation 8132. Up to 907 conditions per place. [2024-06-28 03:42:33,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 29 changer transitions 9/187 dead transitions. [2024-06-28 03:42:33,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 187 transitions, 2125 flow [2024-06-28 03:42:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:42:33,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:42:33,164 INFO L175 Difference]: Start difference. First operand has 240 places, 165 transitions, 1663 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:42:33,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 187 transitions, 2125 flow [2024-06-28 03:42:33,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 187 transitions, 2053 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:33,453 INFO L231 Difference]: Finished difference. Result has 239 places, 163 transitions, 1654 flow [2024-06-28 03:42:33,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1654, PETRI_PLACES=239, PETRI_TRANSITIONS=163} [2024-06-28 03:42:33,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 03:42:33,454 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 163 transitions, 1654 flow [2024-06-28 03:42:33,454 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) [2024-06-28 03:42:33,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:33,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:42:33,454 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)] === [2024-06-28 03:42:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1475162867, now seen corresponding path program 32 times [2024-06-28 03:42:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:33,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824857660] [2024-06-28 03:42:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:33,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824857660] [2024-06-28 03:42:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824857660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:34,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:34,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061504146] [2024-06-28 03:42:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:34,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:34,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 163 transitions, 1654 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) [2024-06-28 03:42:34,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:34,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:34,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:35,146 INFO L124 PetriNetUnfolderBase]: 535/1077 cut-off events. [2024-06-28 03:42:35,146 INFO L125 PetriNetUnfolderBase]: For 183196/183196 co-relation queries the response was YES. [2024-06-28 03:42:35,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8945 conditions, 1077 events. 535/1077 cut-off events. For 183196/183196 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5958 event pairs, 183 based on Foata normal form. 8/1083 useless extension candidates. Maximal degree in co-relation 8856. Up to 891 conditions per place. [2024-06-28 03:42:35,155 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 26 changer transitions 8/187 dead transitions. [2024-06-28 03:42:35,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 187 transitions, 2244 flow [2024-06-28 03:42:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:35,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:35,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:42:35,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:42:35,156 INFO L175 Difference]: Start difference. First operand has 239 places, 163 transitions, 1654 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:42:35,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 187 transitions, 2244 flow [2024-06-28 03:42:35,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 187 transitions, 2160 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:35,530 INFO L231 Difference]: Finished difference. Result has 238 places, 160 transitions, 1599 flow [2024-06-28 03:42:35,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1599, PETRI_PLACES=238, PETRI_TRANSITIONS=160} [2024-06-28 03:42:35,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:42:35,531 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 160 transitions, 1599 flow [2024-06-28 03:42:35,531 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) [2024-06-28 03:42:35,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:35,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:42:35,531 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)] === [2024-06-28 03:42:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1474955477, now seen corresponding path program 33 times [2024-06-28 03:42:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338351307] [2024-06-28 03:42:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:36,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:36,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338351307] [2024-06-28 03:42:36,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338351307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:36,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:36,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905383966] [2024-06-28 03:42:36,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:36,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:36,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 160 transitions, 1599 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) [2024-06-28 03:42:36,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:36,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:36,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:37,224 INFO L124 PetriNetUnfolderBase]: 503/1013 cut-off events. [2024-06-28 03:42:37,224 INFO L125 PetriNetUnfolderBase]: For 163310/163310 co-relation queries the response was YES. [2024-06-28 03:42:37,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 1013 events. 503/1013 cut-off events. For 163310/163310 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5508 event pairs, 172 based on Foata normal form. 10/1021 useless extension candidates. Maximal degree in co-relation 7910. Up to 891 conditions per place. [2024-06-28 03:42:37,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 144 selfloop transitions, 24 changer transitions 9/179 dead transitions. [2024-06-28 03:42:37,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 179 transitions, 2013 flow [2024-06-28 03:42:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:37,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:37,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:42:37,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:42:37,232 INFO L175 Difference]: Start difference. First operand has 238 places, 160 transitions, 1599 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:42:37,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 179 transitions, 2013 flow [2024-06-28 03:42:37,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 179 transitions, 1955 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:37,479 INFO L231 Difference]: Finished difference. Result has 234 places, 157 transitions, 1564 flow [2024-06-28 03:42:37,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1564, PETRI_PLACES=234, PETRI_TRANSITIONS=157} [2024-06-28 03:42:37,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:42:37,479 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 157 transitions, 1564 flow [2024-06-28 03:42:37,479 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) [2024-06-28 03:42:37,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:37,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:42:37,480 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)] === [2024-06-28 03:42:37,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1302430123, now seen corresponding path program 8 times [2024-06-28 03:42:37,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:37,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690535060] [2024-06-28 03:42:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:38,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690535060] [2024-06-28 03:42:38,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690535060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:38,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:38,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036880115] [2024-06-28 03:42:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:38,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:38,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:38,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:38,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:38,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 157 transitions, 1564 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) [2024-06-28 03:42:38,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:38,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:38,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:38,978 INFO L124 PetriNetUnfolderBase]: 481/971 cut-off events. [2024-06-28 03:42:38,978 INFO L125 PetriNetUnfolderBase]: For 135407/135407 co-relation queries the response was YES. [2024-06-28 03:42:38,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7775 conditions, 971 events. 481/971 cut-off events. For 135407/135407 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5223 event pairs, 160 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7688. Up to 900 conditions per place. [2024-06-28 03:42:38,986 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2024-06-28 03:42:38,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 171 transitions, 1964 flow [2024-06-28 03:42:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:42:38,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:42:38,986 INFO L175 Difference]: Start difference. First operand has 234 places, 157 transitions, 1564 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:42:38,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 171 transitions, 1964 flow [2024-06-28 03:42:39,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 171 transitions, 1910 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:39,253 INFO L231 Difference]: Finished difference. Result has 231 places, 158 transitions, 1596 flow [2024-06-28 03:42:39,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=231, PETRI_TRANSITIONS=158} [2024-06-28 03:42:39,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 03:42:39,254 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 158 transitions, 1596 flow [2024-06-28 03:42:39,254 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) [2024-06-28 03:42:39,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:42:39,254 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)] === [2024-06-28 03:42:39,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1561044523, now seen corresponding path program 9 times [2024-06-28 03:42:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:39,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144948241] [2024-06-28 03:42:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:39,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:40,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:40,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144948241] [2024-06-28 03:42:40,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144948241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:40,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259218559] [2024-06-28 03:42:40,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:40,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:40,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:40,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:40,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:40,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:40,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 158 transitions, 1596 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) [2024-06-28 03:42:40,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:40,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:40,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:40,826 INFO L124 PetriNetUnfolderBase]: 485/979 cut-off events. [2024-06-28 03:42:40,826 INFO L125 PetriNetUnfolderBase]: For 132055/132055 co-relation queries the response was YES. [2024-06-28 03:42:40,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 979 events. 485/979 cut-off events. For 132055/132055 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5270 event pairs, 162 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 7726. Up to 932 conditions per place. [2024-06-28 03:42:40,834 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-28 03:42:40,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 172 transitions, 1994 flow [2024-06-28 03:42:40,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:42:40,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 03:42:40,835 INFO L175 Difference]: Start difference. First operand has 231 places, 158 transitions, 1596 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:42:40,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 172 transitions, 1994 flow [2024-06-28 03:42:41,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 172 transitions, 1918 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:41,125 INFO L231 Difference]: Finished difference. Result has 234 places, 159 transitions, 1590 flow [2024-06-28 03:42:41,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1590, PETRI_PLACES=234, PETRI_TRANSITIONS=159} [2024-06-28 03:42:41,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:42:41,126 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 159 transitions, 1590 flow [2024-06-28 03:42:41,126 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) [2024-06-28 03:42:41,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:41,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:42:41,126 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)] === [2024-06-28 03:42:41,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -769082595, now seen corresponding path program 34 times [2024-06-28 03:42:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:41,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730859566] [2024-06-28 03:42:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:42,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730859566] [2024-06-28 03:42:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730859566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942719647] [2024-06-28 03:42:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:42,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:42,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 159 transitions, 1590 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) [2024-06-28 03:42:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:42,858 INFO L124 PetriNetUnfolderBase]: 497/1007 cut-off events. [2024-06-28 03:42:42,858 INFO L125 PetriNetUnfolderBase]: For 150014/150014 co-relation queries the response was YES. [2024-06-28 03:42:42,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7883 conditions, 1007 events. 497/1007 cut-off events. For 150014/150014 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5474 event pairs, 166 based on Foata normal form. 8/1013 useless extension candidates. Maximal degree in co-relation 7796. Up to 815 conditions per place. [2024-06-28 03:42:42,866 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 26 changer transitions 7/182 dead transitions. [2024-06-28 03:42:42,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 182 transitions, 2162 flow [2024-06-28 03:42:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:42:42,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:42:42,867 INFO L175 Difference]: Start difference. First operand has 234 places, 159 transitions, 1590 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:42:42,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 182 transitions, 2162 flow [2024-06-28 03:42:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 182 transitions, 2102 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:43,106 INFO L231 Difference]: Finished difference. Result has 236 places, 157 transitions, 1567 flow [2024-06-28 03:42:43,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1567, PETRI_PLACES=236, PETRI_TRANSITIONS=157} [2024-06-28 03:42:43,107 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:42:43,107 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 157 transitions, 1567 flow [2024-06-28 03:42:43,107 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) [2024-06-28 03:42:43,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:43,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:42:43,108 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)] === [2024-06-28 03:42:43,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1302439423, now seen corresponding path program 10 times [2024-06-28 03:42:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:43,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477957968] [2024-06-28 03:42:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:43,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:44,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:44,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477957968] [2024-06-28 03:42:44,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477957968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:44,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:44,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217869785] [2024-06-28 03:42:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:44,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:44,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:44,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 157 transitions, 1567 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) [2024-06-28 03:42:44,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:44,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:44,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:44,688 INFO L124 PetriNetUnfolderBase]: 490/990 cut-off events. [2024-06-28 03:42:44,688 INFO L125 PetriNetUnfolderBase]: For 145021/145021 co-relation queries the response was YES. [2024-06-28 03:42:44,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 990 events. 490/990 cut-off events. For 145021/145021 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5354 event pairs, 165 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 8040. Up to 896 conditions per place. [2024-06-28 03:42:44,696 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 143 selfloop transitions, 28 changer transitions 0/173 dead transitions. [2024-06-28 03:42:44,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 173 transitions, 2147 flow [2024-06-28 03:42:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:42:44,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:42:44,697 INFO L175 Difference]: Start difference. First operand has 236 places, 157 transitions, 1567 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:42:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 173 transitions, 2147 flow [2024-06-28 03:42:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 173 transitions, 2091 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:44,962 INFO L231 Difference]: Finished difference. Result has 234 places, 159 transitions, 1641 flow [2024-06-28 03:42:44,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1641, PETRI_PLACES=234, PETRI_TRANSITIONS=159} [2024-06-28 03:42:44,962 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:42:44,962 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 159 transitions, 1641 flow [2024-06-28 03:42:44,962 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) [2024-06-28 03:42:44,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:44,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:42:44,963 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)] === [2024-06-28 03:42:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1143771409, now seen corresponding path program 11 times [2024-06-28 03:42:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11426215] [2024-06-28 03:42:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:44,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:45,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11426215] [2024-06-28 03:42:45,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11426215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:45,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:45,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453550169] [2024-06-28 03:42:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:45,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:45,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:45,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:46,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:46,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 159 transitions, 1641 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) [2024-06-28 03:42:46,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:46,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:46,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:46,512 INFO L124 PetriNetUnfolderBase]: 487/985 cut-off events. [2024-06-28 03:42:46,513 INFO L125 PetriNetUnfolderBase]: For 136435/136435 co-relation queries the response was YES. [2024-06-28 03:42:46,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7943 conditions, 985 events. 487/985 cut-off events. For 136435/136435 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5321 event pairs, 173 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 7856. Up to 928 conditions per place. [2024-06-28 03:42:46,519 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 23 changer transitions 0/171 dead transitions. [2024-06-28 03:42:46,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 171 transitions, 2009 flow [2024-06-28 03:42:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:42:46,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:42:46,521 INFO L175 Difference]: Start difference. First operand has 234 places, 159 transitions, 1641 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:42:46,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 171 transitions, 2009 flow [2024-06-28 03:42:46,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 171 transitions, 1925 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:42:46,803 INFO L231 Difference]: Finished difference. Result has 238 places, 159 transitions, 1609 flow [2024-06-28 03:42:46,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1609, PETRI_PLACES=238, PETRI_TRANSITIONS=159} [2024-06-28 03:42:46,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:42:46,804 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 159 transitions, 1609 flow [2024-06-28 03:42:46,804 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) [2024-06-28 03:42:46,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:46,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:42:46,804 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)] === [2024-06-28 03:42:46,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1281217877, now seen corresponding path program 35 times [2024-06-28 03:42:46,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:46,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408748266] [2024-06-28 03:42:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:46,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408748266] [2024-06-28 03:42:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408748266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357921989] [2024-06-28 03:42:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:48,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:48,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 159 transitions, 1609 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) [2024-06-28 03:42:48,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:48,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:48,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:48,540 INFO L124 PetriNetUnfolderBase]: 503/1021 cut-off events. [2024-06-28 03:42:48,540 INFO L125 PetriNetUnfolderBase]: For 159263/159263 co-relation queries the response was YES. [2024-06-28 03:42:48,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8030 conditions, 1021 events. 503/1021 cut-off events. For 159263/159263 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5602 event pairs, 170 based on Foata normal form. 10/1029 useless extension candidates. Maximal degree in co-relation 7941. Up to 896 conditions per place. [2024-06-28 03:42:48,547 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 24 changer transitions 12/178 dead transitions. [2024-06-28 03:42:48,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 178 transitions, 2021 flow [2024-06-28 03:42:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:42:48,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:42:48,548 INFO L175 Difference]: Start difference. First operand has 238 places, 159 transitions, 1609 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:42:48,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 178 transitions, 2021 flow [2024-06-28 03:42:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 178 transitions, 1972 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:48,810 INFO L231 Difference]: Finished difference. Result has 241 places, 155 transitions, 1571 flow [2024-06-28 03:42:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1571, PETRI_PLACES=241, PETRI_TRANSITIONS=155} [2024-06-28 03:42:48,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 03:42:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 155 transitions, 1571 flow [2024-06-28 03:42:48,811 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) [2024-06-28 03:42:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:48,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:42:48,811 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)] === [2024-06-28 03:42:48,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1974165219, now seen corresponding path program 36 times [2024-06-28 03:42:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227781246] [2024-06-28 03:42:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227781246] [2024-06-28 03:42:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227781246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:49,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:49,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:49,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918887381] [2024-06-28 03:42:49,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:49,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:49,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:49,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 155 transitions, 1571 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) [2024-06-28 03:42:49,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:49,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:49,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:50,269 INFO L124 PetriNetUnfolderBase]: 494/1006 cut-off events. [2024-06-28 03:42:50,269 INFO L125 PetriNetUnfolderBase]: For 163697/163697 co-relation queries the response was YES. [2024-06-28 03:42:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7992 conditions, 1006 events. 494/1006 cut-off events. For 163697/163697 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5524 event pairs, 177 based on Foata normal form. 10/1014 useless extension candidates. Maximal degree in co-relation 7902. Up to 897 conditions per place. [2024-06-28 03:42:50,276 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 21 changer transitions 10/173 dead transitions. [2024-06-28 03:42:50,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 173 transitions, 1969 flow [2024-06-28 03:42:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-28 03:42:50,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-28 03:42:50,277 INFO L175 Difference]: Start difference. First operand has 241 places, 155 transitions, 1571 flow. Second operand 11 states and 112 transitions. [2024-06-28 03:42:50,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 173 transitions, 1969 flow [2024-06-28 03:42:50,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 173 transitions, 1915 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 03:42:50,569 INFO L231 Difference]: Finished difference. Result has 236 places, 151 transitions, 1524 flow [2024-06-28 03:42:50,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1524, PETRI_PLACES=236, PETRI_TRANSITIONS=151} [2024-06-28 03:42:50,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 03:42:50,570 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 151 transitions, 1524 flow [2024-06-28 03:42:50,570 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) [2024-06-28 03:42:50,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:50,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:50,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:42:50,570 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)] === [2024-06-28 03:42:50,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:50,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2072640699, now seen corresponding path program 37 times [2024-06-28 03:42:50,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:50,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719965605] [2024-06-28 03:42:50,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:50,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719965605] [2024-06-28 03:42:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719965605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:51,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030114866] [2024-06-28 03:42:51,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:51,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:51,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:51,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:51,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:51,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:51,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 151 transitions, 1524 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) [2024-06-28 03:42:51,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:51,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:51,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:52,373 INFO L124 PetriNetUnfolderBase]: 482/990 cut-off events. [2024-06-28 03:42:52,373 INFO L125 PetriNetUnfolderBase]: For 154787/154787 co-relation queries the response was YES. [2024-06-28 03:42:52,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7787 conditions, 990 events. 482/990 cut-off events. For 154787/154787 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5427 event pairs, 173 based on Foata normal form. 10/998 useless extension candidates. Maximal degree in co-relation 7699. Up to 869 conditions per place. [2024-06-28 03:42:52,407 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 24 changer transitions 11/170 dead transitions. [2024-06-28 03:42:52,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 170 transitions, 1920 flow [2024-06-28 03:42:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:42:52,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:42:52,408 INFO L175 Difference]: Start difference. First operand has 236 places, 151 transitions, 1524 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:42:52,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 170 transitions, 1920 flow [2024-06-28 03:42:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 170 transitions, 1870 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:52,702 INFO L231 Difference]: Finished difference. Result has 234 places, 148 transitions, 1496 flow [2024-06-28 03:42:52,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1496, PETRI_PLACES=234, PETRI_TRANSITIONS=148} [2024-06-28 03:42:52,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 03:42:52,702 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 148 transitions, 1496 flow [2024-06-28 03:42:52,702 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) [2024-06-28 03:42:52,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:52,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:42:52,703 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)] === [2024-06-28 03:42:52,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2065498795, now seen corresponding path program 12 times [2024-06-28 03:42:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299842861] [2024-06-28 03:42:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:53,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299842861] [2024-06-28 03:42:53,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299842861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:53,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:53,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:42:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954856403] [2024-06-28 03:42:53,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:53,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:42:53,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:42:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:42:53,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:53,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 148 transitions, 1496 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:53,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:53,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:53,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:54,209 INFO L124 PetriNetUnfolderBase]: 453/935 cut-off events. [2024-06-28 03:42:54,209 INFO L125 PetriNetUnfolderBase]: For 127227/127227 co-relation queries the response was YES. [2024-06-28 03:42:54,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 935 events. 453/935 cut-off events. For 127227/127227 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5092 event pairs, 167 based on Foata normal form. 2/935 useless extension candidates. Maximal degree in co-relation 7293. Up to 864 conditions per place. [2024-06-28 03:42:54,216 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 25 changer transitions 0/161 dead transitions. [2024-06-28 03:42:54,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 161 transitions, 1848 flow [2024-06-28 03:42:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:42:54,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:42:54,217 INFO L175 Difference]: Start difference. First operand has 234 places, 148 transitions, 1496 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:42:54,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 161 transitions, 1848 flow [2024-06-28 03:42:54,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 161 transitions, 1774 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:54,479 INFO L231 Difference]: Finished difference. Result has 231 places, 148 transitions, 1476 flow [2024-06-28 03:42:54,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1476, PETRI_PLACES=231, PETRI_TRANSITIONS=148} [2024-06-28 03:42:54,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 03:42:54,479 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 148 transitions, 1476 flow [2024-06-28 03:42:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:54,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:54,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:42:54,479 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)] === [2024-06-28 03:42:54,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2065490859, now seen corresponding path program 38 times [2024-06-28 03:42:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:54,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597953332] [2024-06-28 03:42:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:54,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:55,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:55,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:55,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597953332] [2024-06-28 03:42:55,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597953332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:55,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:55,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:55,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883352326] [2024-06-28 03:42:55,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:55,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:55,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:55,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:55,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:55,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 148 transitions, 1476 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) [2024-06-28 03:42:55,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:55,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:55,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:56,086 INFO L124 PetriNetUnfolderBase]: 469/971 cut-off events. [2024-06-28 03:42:56,086 INFO L125 PetriNetUnfolderBase]: For 141236/141236 co-relation queries the response was YES. [2024-06-28 03:42:56,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 971 events. 469/971 cut-off events. For 141236/141236 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5342 event pairs, 170 based on Foata normal form. 10/979 useless extension candidates. Maximal degree in co-relation 7303. Up to 850 conditions per place. [2024-06-28 03:42:56,094 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 25 changer transitions 11/167 dead transitions. [2024-06-28 03:42:56,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 167 transitions, 1866 flow [2024-06-28 03:42:56,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:42:56,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:42:56,095 INFO L175 Difference]: Start difference. First operand has 231 places, 148 transitions, 1476 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:42:56,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 167 transitions, 1866 flow [2024-06-28 03:42:56,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 167 transitions, 1810 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:56,358 INFO L231 Difference]: Finished difference. Result has 233 places, 145 transitions, 1444 flow [2024-06-28 03:42:56,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1444, PETRI_PLACES=233, PETRI_TRANSITIONS=145} [2024-06-28 03:42:56,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 03:42:56,358 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 145 transitions, 1444 flow [2024-06-28 03:42:56,359 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) [2024-06-28 03:42:56,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:56,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:56,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:42:56,359 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)] === [2024-06-28 03:42:56,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:56,359 INFO L85 PathProgramCache]: Analyzing trace with hash 389053867, now seen corresponding path program 13 times [2024-06-28 03:42:56,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598548807] [2024-06-28 03:42:56,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:57,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598548807] [2024-06-28 03:42:57,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598548807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:57,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:57,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:57,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821437413] [2024-06-28 03:42:57,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:57,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:57,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:57,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:57,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 145 transitions, 1444 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) [2024-06-28 03:42:57,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:57,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:57,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:57,972 INFO L124 PetriNetUnfolderBase]: 427/893 cut-off events. [2024-06-28 03:42:57,972 INFO L125 PetriNetUnfolderBase]: For 122197/122197 co-relation queries the response was YES. [2024-06-28 03:42:57,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6338 conditions, 893 events. 427/893 cut-off events. For 122197/122197 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4836 event pairs, 153 based on Foata normal form. 12/903 useless extension candidates. Maximal degree in co-relation 6251. Up to 771 conditions per place. [2024-06-28 03:42:57,978 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 130 selfloop transitions, 23 changer transitions 9/164 dead transitions. [2024-06-28 03:42:57,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 164 transitions, 1858 flow [2024-06-28 03:42:57,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:57,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:42:57,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:42:57,979 INFO L175 Difference]: Start difference. First operand has 233 places, 145 transitions, 1444 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:42:57,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 164 transitions, 1858 flow [2024-06-28 03:42:58,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 164 transitions, 1804 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:58,178 INFO L231 Difference]: Finished difference. Result has 231 places, 143 transitions, 1445 flow [2024-06-28 03:42:58,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1390, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1445, PETRI_PLACES=231, PETRI_TRANSITIONS=143} [2024-06-28 03:42:58,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 03:42:58,179 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 143 transitions, 1445 flow [2024-06-28 03:42:58,179 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) [2024-06-28 03:42:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:58,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:58,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:42:58,179 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)] === [2024-06-28 03:42:58,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 316888273, now seen corresponding path program 14 times [2024-06-28 03:42:58,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:58,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261877377] [2024-06-28 03:42:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:58,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:59,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261877377] [2024-06-28 03:42:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261877377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:59,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:59,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397394531] [2024-06-28 03:42:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:59,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:59,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 143 transitions, 1445 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) [2024-06-28 03:42:59,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:59,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:59,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:59,778 INFO L124 PetriNetUnfolderBase]: 398/838 cut-off events. [2024-06-28 03:42:59,778 INFO L125 PetriNetUnfolderBase]: For 91864/91864 co-relation queries the response was YES. [2024-06-28 03:42:59,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 838 events. 398/838 cut-off events. For 91864/91864 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4479 event pairs, 146 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 5855. Up to 740 conditions per place. [2024-06-28 03:42:59,784 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-28 03:42:59,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 155 transitions, 1779 flow [2024-06-28 03:42:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:59,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:42:59,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 03:42:59,786 INFO L175 Difference]: Start difference. First operand has 231 places, 143 transitions, 1445 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:42:59,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 155 transitions, 1779 flow [2024-06-28 03:43:00,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 155 transitions, 1701 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:00,018 INFO L231 Difference]: Finished difference. Result has 229 places, 143 transitions, 1423 flow [2024-06-28 03:43:00,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1423, PETRI_PLACES=229, PETRI_TRANSITIONS=143} [2024-06-28 03:43:00,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 03:43:00,018 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 143 transitions, 1423 flow [2024-06-28 03:43:00,019 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) [2024-06-28 03:43:00,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:00,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:43:00,019 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)] === [2024-06-28 03:43:00,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1409678435, now seen corresponding path program 39 times [2024-06-28 03:43:00,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:00,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797364587] [2024-06-28 03:43:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:01,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:01,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797364587] [2024-06-28 03:43:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797364587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:01,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:01,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:01,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049854553] [2024-06-28 03:43:01,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:01,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:01,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:01,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:01,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 143 transitions, 1423 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) [2024-06-28 03:43:01,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:01,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:01,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:01,601 INFO L124 PetriNetUnfolderBase]: 407/861 cut-off events. [2024-06-28 03:43:01,601 INFO L125 PetriNetUnfolderBase]: For 104843/104843 co-relation queries the response was YES. [2024-06-28 03:43:01,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5819 conditions, 861 events. 407/861 cut-off events. For 104843/104843 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4662 event pairs, 146 based on Foata normal form. 10/869 useless extension candidates. Maximal degree in co-relation 5733. Up to 739 conditions per place. [2024-06-28 03:43:01,607 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 25 changer transitions 11/161 dead transitions. [2024-06-28 03:43:01,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 161 transitions, 1797 flow [2024-06-28 03:43:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:01,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:43:01,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:43:01,608 INFO L175 Difference]: Start difference. First operand has 229 places, 143 transitions, 1423 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:43:01,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 161 transitions, 1797 flow [2024-06-28 03:43:01,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 161 transitions, 1667 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:01,787 INFO L231 Difference]: Finished difference. Result has 229 places, 140 transitions, 1322 flow [2024-06-28 03:43:01,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1322, PETRI_PLACES=229, PETRI_TRANSITIONS=140} [2024-06-28 03:43:01,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 03:43:01,787 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 140 transitions, 1322 flow [2024-06-28 03:43:01,788 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) [2024-06-28 03:43:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:01,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:43:01,788 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)] === [2024-06-28 03:43:01,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:01,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2065283469, now seen corresponding path program 40 times [2024-06-28 03:43:01,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:01,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138295252] [2024-06-28 03:43:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:02,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:02,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138295252] [2024-06-28 03:43:02,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138295252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:02,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:02,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062458083] [2024-06-28 03:43:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:02,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:02,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:02,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:02,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 140 transitions, 1322 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) [2024-06-28 03:43:02,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:02,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:02,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:03,344 INFO L124 PetriNetUnfolderBase]: 373/795 cut-off events. [2024-06-28 03:43:03,345 INFO L125 PetriNetUnfolderBase]: For 84227/84227 co-relation queries the response was YES. [2024-06-28 03:43:03,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 795 events. 373/795 cut-off events. For 84227/84227 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4232 event pairs, 124 based on Foata normal form. 8/801 useless extension candidates. Maximal degree in co-relation 4843. Up to 683 conditions per place. [2024-06-28 03:43:03,350 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 23 changer transitions 11/157 dead transitions. [2024-06-28 03:43:03,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 157 transitions, 1680 flow [2024-06-28 03:43:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:43:03,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:43:03,350 INFO L175 Difference]: Start difference. First operand has 229 places, 140 transitions, 1322 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:43:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 157 transitions, 1680 flow [2024-06-28 03:43:03,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 157 transitions, 1594 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:03,499 INFO L231 Difference]: Finished difference. Result has 226 places, 137 transitions, 1262 flow [2024-06-28 03:43:03,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1262, PETRI_PLACES=226, PETRI_TRANSITIONS=137} [2024-06-28 03:43:03,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 03:43:03,499 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 137 transitions, 1262 flow [2024-06-28 03:43:03,499 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) [2024-06-28 03:43:03,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:03,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:03,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:43:03,499 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)] === [2024-06-28 03:43:03,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash 702948347, now seen corresponding path program 41 times [2024-06-28 03:43:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905242458] [2024-06-28 03:43:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:04,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905242458] [2024-06-28 03:43:04,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905242458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:04,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:04,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:04,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025384856] [2024-06-28 03:43:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:04,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:04,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 137 transitions, 1262 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:04,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:04,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:04,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:04,907 INFO L124 PetriNetUnfolderBase]: 341/731 cut-off events. [2024-06-28 03:43:04,907 INFO L125 PetriNetUnfolderBase]: For 61924/61924 co-relation queries the response was YES. [2024-06-28 03:43:04,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3963 conditions, 731 events. 341/731 cut-off events. For 61924/61924 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3842 event pairs, 80 based on Foata normal form. 10/739 useless extension candidates. Maximal degree in co-relation 3881. Up to 344 conditions per place. [2024-06-28 03:43:04,915 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 101 selfloop transitions, 43 changer transitions 11/157 dead transitions. [2024-06-28 03:43:04,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 157 transitions, 1636 flow [2024-06-28 03:43:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:43:04,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:43:04,916 INFO L175 Difference]: Start difference. First operand has 226 places, 137 transitions, 1262 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:43:04,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 157 transitions, 1636 flow [2024-06-28 03:43:05,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 157 transitions, 1556 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:05,029 INFO L231 Difference]: Finished difference. Result has 221 places, 130 transitions, 1206 flow [2024-06-28 03:43:05,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1206, PETRI_PLACES=221, PETRI_TRANSITIONS=130} [2024-06-28 03:43:05,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 03:43:05,029 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 130 transitions, 1206 flow [2024-06-28 03:43:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:05,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:05,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:05,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:43:05,030 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)] === [2024-06-28 03:43:05,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:05,030 INFO L85 PathProgramCache]: Analyzing trace with hash 470148418, now seen corresponding path program 1 times [2024-06-28 03:43:05,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:05,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738924622] [2024-06-28 03:43:05,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:05,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:06,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:06,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738924622] [2024-06-28 03:43:06,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738924622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:06,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:06,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:06,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986721259] [2024-06-28 03:43:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:06,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:06,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:06,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:06,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 130 transitions, 1206 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) [2024-06-28 03:43:06,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:06,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:06,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:06,873 INFO L124 PetriNetUnfolderBase]: 318/684 cut-off events. [2024-06-28 03:43:06,873 INFO L125 PetriNetUnfolderBase]: For 50168/50168 co-relation queries the response was YES. [2024-06-28 03:43:06,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3733 conditions, 684 events. 318/684 cut-off events. For 50168/50168 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3557 event pairs, 76 based on Foata normal form. 6/688 useless extension candidates. Maximal degree in co-relation 3653. Up to 330 conditions per place. [2024-06-28 03:43:06,877 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 83 selfloop transitions, 49 changer transitions 11/145 dead transitions. [2024-06-28 03:43:06,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 145 transitions, 1530 flow [2024-06-28 03:43:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:43:06,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:43:06,878 INFO L175 Difference]: Start difference. First operand has 221 places, 130 transitions, 1206 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:43:06,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 145 transitions, 1530 flow [2024-06-28 03:43:06,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 145 transitions, 1394 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-28 03:43:06,964 INFO L231 Difference]: Finished difference. Result has 208 places, 123 transitions, 1104 flow [2024-06-28 03:43:06,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1104, PETRI_PLACES=208, PETRI_TRANSITIONS=123} [2024-06-28 03:43:06,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:43:06,964 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 123 transitions, 1104 flow [2024-06-28 03:43:06,964 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) [2024-06-28 03:43:06,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:06,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:06,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:43:06,965 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)] === [2024-06-28 03:43:06,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash 306549894, now seen corresponding path program 2 times [2024-06-28 03:43:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617285924] [2024-06-28 03:43:06,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:08,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617285924] [2024-06-28 03:43:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617285924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:08,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:08,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901257943] [2024-06-28 03:43:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:08,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:08,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:08,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:08,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:08,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:08,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 123 transitions, 1104 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) [2024-06-28 03:43:08,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:08,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:08,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:08,836 INFO L124 PetriNetUnfolderBase]: 293/623 cut-off events. [2024-06-28 03:43:08,837 INFO L125 PetriNetUnfolderBase]: For 49847/49847 co-relation queries the response was YES. [2024-06-28 03:43:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 623 events. 293/623 cut-off events. For 49847/49847 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3130 event pairs, 64 based on Foata normal form. 6/627 useless extension candidates. Maximal degree in co-relation 3335. Up to 326 conditions per place. [2024-06-28 03:43:08,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 45 changer transitions 16/140 dead transitions. [2024-06-28 03:43:08,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 140 transitions, 1424 flow [2024-06-28 03:43:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:43:08,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:43:08,849 INFO L175 Difference]: Start difference. First operand has 208 places, 123 transitions, 1104 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:43:08,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 140 transitions, 1424 flow [2024-06-28 03:43:08,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 140 transitions, 1199 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-28 03:43:08,976 INFO L231 Difference]: Finished difference. Result has 202 places, 115 transitions, 911 flow [2024-06-28 03:43:08,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=911, PETRI_PLACES=202, PETRI_TRANSITIONS=115} [2024-06-28 03:43:08,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2024-06-28 03:43:08,977 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 115 transitions, 911 flow [2024-06-28 03:43:08,977 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) [2024-06-28 03:43:08,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:08,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:43:08,977 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)] === [2024-06-28 03:43:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2047490148, now seen corresponding path program 3 times [2024-06-28 03:43:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:08,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713402992] [2024-06-28 03:43:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:08,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713402992] [2024-06-28 03:43:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713402992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:10,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998954882] [2024-06-28 03:43:10,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:10,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:10,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:10,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:10,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 115 transitions, 911 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) [2024-06-28 03:43:10,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:10,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:10,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:10,899 INFO L124 PetriNetUnfolderBase]: 262/558 cut-off events. [2024-06-28 03:43:10,899 INFO L125 PetriNetUnfolderBase]: For 37315/37315 co-relation queries the response was YES. [2024-06-28 03:43:10,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 558 events. 262/558 cut-off events. For 37315/37315 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2726 event pairs, 48 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2588. Up to 273 conditions per place. [2024-06-28 03:43:10,903 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 41 changer transitions 23/131 dead transitions. [2024-06-28 03:43:10,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 131 transitions, 1209 flow [2024-06-28 03:43:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:10,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:43:10,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:43:10,903 INFO L175 Difference]: Start difference. First operand has 202 places, 115 transitions, 911 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:43:10,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 131 transitions, 1209 flow [2024-06-28 03:43:10,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 131 transitions, 1100 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:43:10,982 INFO L231 Difference]: Finished difference. Result has 193 places, 102 transitions, 801 flow [2024-06-28 03:43:10,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=801, PETRI_PLACES=193, PETRI_TRANSITIONS=102} [2024-06-28 03:43:10,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 03:43:10,982 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 102 transitions, 801 flow [2024-06-28 03:43:10,983 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) [2024-06-28 03:43:10,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:10,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:10,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:43:10,983 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)] === [2024-06-28 03:43:10,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1632280556, now seen corresponding path program 4 times [2024-06-28 03:43:10,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:10,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545403971] [2024-06-28 03:43:10,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545403971] [2024-06-28 03:43:12,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545403971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:12,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:12,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292746823] [2024-06-28 03:43:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:12,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:12,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:12,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:12,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:12,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 102 transitions, 801 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) [2024-06-28 03:43:12,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:12,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:12,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:12,768 INFO L124 PetriNetUnfolderBase]: 238/506 cut-off events. [2024-06-28 03:43:12,769 INFO L125 PetriNetUnfolderBase]: For 33904/33904 co-relation queries the response was YES. [2024-06-28 03:43:12,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 506 events. 238/506 cut-off events. For 33904/33904 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2371 event pairs, 56 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2359. Up to 261 conditions per place. [2024-06-28 03:43:12,772 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 66 selfloop transitions, 32 changer transitions 17/117 dead transitions. [2024-06-28 03:43:12,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 117 transitions, 1071 flow [2024-06-28 03:43:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:43:12,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-28 03:43:12,772 INFO L175 Difference]: Start difference. First operand has 193 places, 102 transitions, 801 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:43:12,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 117 transitions, 1071 flow [2024-06-28 03:43:12,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 117 transitions, 969 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:43:12,822 INFO L231 Difference]: Finished difference. Result has 175 places, 92 transitions, 698 flow [2024-06-28 03:43:12,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=698, PETRI_PLACES=175, PETRI_TRANSITIONS=92} [2024-06-28 03:43:12,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:43:12,823 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 92 transitions, 698 flow [2024-06-28 03:43:12,823 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) [2024-06-28 03:43:12,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:12,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:12,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:43:12,824 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)] === [2024-06-28 03:43:12,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash 314562468, now seen corresponding path program 5 times [2024-06-28 03:43:12,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:12,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977846297] [2024-06-28 03:43:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:14,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:14,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977846297] [2024-06-28 03:43:14,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977846297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:14,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:14,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:14,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570666222] [2024-06-28 03:43:14,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:14,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:14,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:14,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:14,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:14,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 92 transitions, 698 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) [2024-06-28 03:43:14,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:14,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:14,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:15,121 INFO L124 PetriNetUnfolderBase]: 220/468 cut-off events. [2024-06-28 03:43:15,122 INFO L125 PetriNetUnfolderBase]: For 28537/28537 co-relation queries the response was YES. [2024-06-28 03:43:15,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 468 events. 220/468 cut-off events. For 28537/28537 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2104 event pairs, 56 based on Foata normal form. 6/472 useless extension candidates. Maximal degree in co-relation 2140. Up to 249 conditions per place. [2024-06-28 03:43:15,124 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 33 changer transitions 12/106 dead transitions. [2024-06-28 03:43:15,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 106 transitions, 942 flow [2024-06-28 03:43:15,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:43:15,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:43:15,125 INFO L175 Difference]: Start difference. First operand has 175 places, 92 transitions, 698 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:43:15,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 106 transitions, 942 flow [2024-06-28 03:43:15,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 106 transitions, 806 flow, removed 5 selfloop flow, removed 19 redundant places. [2024-06-28 03:43:15,171 INFO L231 Difference]: Finished difference. Result has 157 places, 86 transitions, 600 flow [2024-06-28 03:43:15,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=600, PETRI_PLACES=157, PETRI_TRANSITIONS=86} [2024-06-28 03:43:15,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 03:43:15,171 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 86 transitions, 600 flow [2024-06-28 03:43:15,171 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) [2024-06-28 03:43:15,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:15,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:43:15,172 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)] === [2024-06-28 03:43:15,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 314850768, now seen corresponding path program 6 times [2024-06-28 03:43:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010443702] [2024-06-28 03:43:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:16,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:16,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010443702] [2024-06-28 03:43:16,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010443702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:16,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:16,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:16,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048457289] [2024-06-28 03:43:16,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:16,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:16,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:16,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:16,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 86 transitions, 600 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) [2024-06-28 03:43:16,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:16,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:16,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:17,277 INFO L124 PetriNetUnfolderBase]: 200/436 cut-off events. [2024-06-28 03:43:17,277 INFO L125 PetriNetUnfolderBase]: For 24465/24465 co-relation queries the response was YES. [2024-06-28 03:43:17,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 436 events. 200/436 cut-off events. For 24465/24465 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1949 event pairs, 48 based on Foata normal form. 6/440 useless extension candidates. Maximal degree in co-relation 1933. Up to 219 conditions per place. [2024-06-28 03:43:17,280 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 18 changer transitions 33/100 dead transitions. [2024-06-28 03:43:17,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 100 transitions, 830 flow [2024-06-28 03:43:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:43:17,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:43:17,280 INFO L175 Difference]: Start difference. First operand has 157 places, 86 transitions, 600 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:43:17,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 100 transitions, 830 flow [2024-06-28 03:43:17,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 100 transitions, 758 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:17,316 INFO L231 Difference]: Finished difference. Result has 152 places, 65 transitions, 449 flow [2024-06-28 03:43:17,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=449, PETRI_PLACES=152, PETRI_TRANSITIONS=65} [2024-06-28 03:43:17,316 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:43:17,316 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 65 transitions, 449 flow [2024-06-28 03:43:17,316 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) [2024-06-28 03:43:17,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:17,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:17,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:43:17,316 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)] === [2024-06-28 03:43:17,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash 73741106, now seen corresponding path program 7 times [2024-06-28 03:43:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:17,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998785725] [2024-06-28 03:43:17,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:17,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998785725] [2024-06-28 03:43:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998785725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246217772] [2024-06-28 03:43:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:18,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:18,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:18,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 65 transitions, 449 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) [2024-06-28 03:43:18,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:18,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:18,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:18,992 INFO L124 PetriNetUnfolderBase]: 164/349 cut-off events. [2024-06-28 03:43:18,992 INFO L125 PetriNetUnfolderBase]: For 22531/22531 co-relation queries the response was YES. [2024-06-28 03:43:18,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 349 events. 164/349 cut-off events. For 22531/22531 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1458 event pairs, 41 based on Foata normal form. 6/354 useless extension candidates. Maximal degree in co-relation 1610. Up to 254 conditions per place. [2024-06-28 03:43:18,994 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 14 changer transitions 10/79 dead transitions. [2024-06-28 03:43:18,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 79 transitions, 635 flow [2024-06-28 03:43:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-28 03:43:18,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2991202346041056 [2024-06-28 03:43:18,995 INFO L175 Difference]: Start difference. First operand has 152 places, 65 transitions, 449 flow. Second operand 11 states and 102 transitions. [2024-06-28 03:43:18,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 79 transitions, 635 flow [2024-06-28 03:43:19,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 79 transitions, 569 flow, removed 13 selfloop flow, removed 19 redundant places. [2024-06-28 03:43:19,021 INFO L231 Difference]: Finished difference. Result has 119 places, 61 transitions, 389 flow [2024-06-28 03:43:19,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=389, PETRI_PLACES=119, PETRI_TRANSITIONS=61} [2024-06-28 03:43:19,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 03:43:19,022 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 61 transitions, 389 flow [2024-06-28 03:43:19,022 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) [2024-06-28 03:43:19,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:19,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:19,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:43:19,023 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)] === [2024-06-28 03:43:19,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1523893588, now seen corresponding path program 8 times [2024-06-28 03:43:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:19,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37775018] [2024-06-28 03:43:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:19,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37775018] [2024-06-28 03:43:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37775018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:20,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:20,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:20,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142258765] [2024-06-28 03:43:20,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:20,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:20,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:20,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:20,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 61 transitions, 389 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) [2024-06-28 03:43:20,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:20,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:20,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:20,877 INFO L124 PetriNetUnfolderBase]: 152/329 cut-off events. [2024-06-28 03:43:20,877 INFO L125 PetriNetUnfolderBase]: For 13001/13001 co-relation queries the response was YES. [2024-06-28 03:43:20,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 329 events. 152/329 cut-off events. For 13001/13001 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1355 event pairs, 36 based on Foata normal form. 6/334 useless extension candidates. Maximal degree in co-relation 1398. Up to 195 conditions per place. [2024-06-28 03:43:20,879 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 38 selfloop transitions, 21 changer transitions 14/75 dead transitions. [2024-06-28 03:43:20,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 75 transitions, 569 flow [2024-06-28 03:43:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:20,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:20,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:43:20,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 03:43:20,880 INFO L175 Difference]: Start difference. First operand has 119 places, 61 transitions, 389 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:43:20,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 75 transitions, 569 flow [2024-06-28 03:43:20,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 75 transitions, 535 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:20,895 INFO L231 Difference]: Finished difference. Result has 115 places, 56 transitions, 375 flow [2024-06-28 03:43:20,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=375, PETRI_PLACES=115, PETRI_TRANSITIONS=56} [2024-06-28 03:43:20,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 03:43:20,896 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 56 transitions, 375 flow [2024-06-28 03:43:20,896 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) [2024-06-28 03:43:20,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:20,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:20,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:43:20,896 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)] === [2024-06-28 03:43:20,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:20,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1061288732, now seen corresponding path program 9 times [2024-06-28 03:43:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245652569] [2024-06-28 03:43:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245652569] [2024-06-28 03:43:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245652569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:22,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:22,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681887507] [2024-06-28 03:43:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:22,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:22,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:22,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:22,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 56 transitions, 375 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) [2024-06-28 03:43:22,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:22,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:22,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:22,596 INFO L124 PetriNetUnfolderBase]: 142/307 cut-off events. [2024-06-28 03:43:22,597 INFO L125 PetriNetUnfolderBase]: For 11693/11693 co-relation queries the response was YES. [2024-06-28 03:43:22,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 307 events. 142/307 cut-off events. For 11693/11693 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1226 event pairs, 39 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 1324. Up to 224 conditions per place. [2024-06-28 03:43:22,598 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 8 changer transitions 18/70 dead transitions. [2024-06-28 03:43:22,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 70 transitions, 545 flow [2024-06-28 03:43:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:43:22,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 03:43:22,599 INFO L175 Difference]: Start difference. First operand has 115 places, 56 transitions, 375 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:43:22,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 70 transitions, 545 flow [2024-06-28 03:43:22,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 70 transitions, 493 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:22,609 INFO L231 Difference]: Finished difference. Result has 107 places, 48 transitions, 284 flow [2024-06-28 03:43:22,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=107, PETRI_TRANSITIONS=48} [2024-06-28 03:43:22,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-28 03:43:22,610 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 48 transitions, 284 flow [2024-06-28 03:43:22,610 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) [2024-06-28 03:43:22,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:22,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:22,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:43:22,610 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)] === [2024-06-28 03:43:22,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1053919294, now seen corresponding path program 10 times [2024-06-28 03:43:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515029591] [2024-06-28 03:43:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:24,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:24,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515029591] [2024-06-28 03:43:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515029591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:24,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290853086] [2024-06-28 03:43:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:24,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:24,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:24,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:24,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:24,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:24,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 48 transitions, 284 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) [2024-06-28 03:43:24,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:24,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:24,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:24,807 INFO L124 PetriNetUnfolderBase]: 122/267 cut-off events. [2024-06-28 03:43:24,807 INFO L125 PetriNetUnfolderBase]: For 9173/9173 co-relation queries the response was YES. [2024-06-28 03:43:24,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 267 events. 122/267 cut-off events. For 9173/9173 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1001 event pairs, 44 based on Foata normal form. 6/272 useless extension candidates. Maximal degree in co-relation 1104. Up to 159 conditions per place. [2024-06-28 03:43:24,808 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 14 changer transitions 10/61 dead transitions. [2024-06-28 03:43:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 61 transitions, 436 flow [2024-06-28 03:43:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 03:43:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31290322580645163 [2024-06-28 03:43:24,809 INFO L175 Difference]: Start difference. First operand has 107 places, 48 transitions, 284 flow. Second operand 10 states and 97 transitions. [2024-06-28 03:43:24,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 61 transitions, 436 flow [2024-06-28 03:43:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 61 transitions, 404 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:24,818 INFO L231 Difference]: Finished difference. Result has 96 places, 44 transitions, 263 flow [2024-06-28 03:43:24,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=263, PETRI_PLACES=96, PETRI_TRANSITIONS=44} [2024-06-28 03:43:24,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-28 03:43:24,818 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 44 transitions, 263 flow [2024-06-28 03:43:24,819 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) [2024-06-28 03:43:24,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:24,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:43:24,819 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)] === [2024-06-28 03:43:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash -824230684, now seen corresponding path program 11 times [2024-06-28 03:43:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:24,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047353216] [2024-06-28 03:43:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047353216] [2024-06-28 03:43:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047353216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487317477] [2024-06-28 03:43:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:26,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:26,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:26,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 44 transitions, 263 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) [2024-06-28 03:43:26,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:26,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:26,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:26,478 INFO L124 PetriNetUnfolderBase]: 98/215 cut-off events. [2024-06-28 03:43:26,478 INFO L125 PetriNetUnfolderBase]: For 5061/5061 co-relation queries the response was YES. [2024-06-28 03:43:26,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 215 events. 98/215 cut-off events. For 5061/5061 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 736 event pairs, 27 based on Foata normal form. 6/220 useless extension candidates. Maximal degree in co-relation 766. Up to 142 conditions per place. [2024-06-28 03:43:26,479 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 10 changer transitions 11/58 dead transitions. [2024-06-28 03:43:26,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 58 transitions, 409 flow [2024-06-28 03:43:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-06-28 03:43:26,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961876832844575 [2024-06-28 03:43:26,479 INFO L175 Difference]: Start difference. First operand has 96 places, 44 transitions, 263 flow. Second operand 11 states and 101 transitions. [2024-06-28 03:43:26,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 58 transitions, 409 flow [2024-06-28 03:43:26,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 58 transitions, 373 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:26,483 INFO L231 Difference]: Finished difference. Result has 91 places, 41 transitions, 235 flow [2024-06-28 03:43:26,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=235, PETRI_PLACES=91, PETRI_TRANSITIONS=41} [2024-06-28 03:43:26,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 03:43:26,484 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 41 transitions, 235 flow [2024-06-28 03:43:26,484 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) [2024-06-28 03:43:26,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:26,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:43:26,485 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:26,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1233603198, now seen corresponding path program 12 times [2024-06-28 03:43:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528790236] [2024-06-28 03:43:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:27,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528790236] [2024-06-28 03:43:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528790236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484802143] [2024-06-28 03:43:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:28,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:28,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 41 transitions, 235 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) [2024-06-28 03:43:28,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:28,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:28,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:28,329 INFO L124 PetriNetUnfolderBase]: 88/197 cut-off events. [2024-06-28 03:43:28,330 INFO L125 PetriNetUnfolderBase]: For 4053/4053 co-relation queries the response was YES. [2024-06-28 03:43:28,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 197 events. 88/197 cut-off events. For 4053/4053 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 641 event pairs, 25 based on Foata normal form. 6/202 useless extension candidates. Maximal degree in co-relation 686. Up to 124 conditions per place. [2024-06-28 03:43:28,330 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 29 selfloop transitions, 6 changer transitions 18/55 dead transitions. [2024-06-28 03:43:28,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 55 transitions, 373 flow [2024-06-28 03:43:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-06-28 03:43:28,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932551319648094 [2024-06-28 03:43:28,331 INFO L175 Difference]: Start difference. First operand has 91 places, 41 transitions, 235 flow. Second operand 11 states and 100 transitions. [2024-06-28 03:43:28,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 55 transitions, 373 flow [2024-06-28 03:43:28,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 55 transitions, 347 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:28,335 INFO L231 Difference]: Finished difference. Result has 86 places, 35 transitions, 196 flow [2024-06-28 03:43:28,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=86, PETRI_TRANSITIONS=35} [2024-06-28 03:43:28,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-28 03:43:28,335 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 35 transitions, 196 flow [2024-06-28 03:43:28,335 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) [2024-06-28 03:43:28,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:28,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:28,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:43:28,335 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:28,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash 416039696, now seen corresponding path program 13 times [2024-06-28 03:43:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907173635] [2024-06-28 03:43:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907173635] [2024-06-28 03:43:29,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907173635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:29,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:29,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:29,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167756236] [2024-06-28 03:43:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:29,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:29,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:29,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:29,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:29,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 35 transitions, 196 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) [2024-06-28 03:43:29,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:29,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:29,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:29,713 INFO L124 PetriNetUnfolderBase]: 74/167 cut-off events. [2024-06-28 03:43:29,713 INFO L125 PetriNetUnfolderBase]: For 3447/3447 co-relation queries the response was YES. [2024-06-28 03:43:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 167 events. 74/167 cut-off events. For 3447/3447 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 496 event pairs, 18 based on Foata normal form. 6/172 useless extension candidates. Maximal degree in co-relation 584. Up to 98 conditions per place. [2024-06-28 03:43:29,714 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 25 selfloop transitions, 5 changer transitions 17/49 dead transitions. [2024-06-28 03:43:29,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 49 transitions, 320 flow [2024-06-28 03:43:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:29,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 03:43:29,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-28 03:43:29,715 INFO L175 Difference]: Start difference. First operand has 86 places, 35 transitions, 196 flow. Second operand 11 states and 96 transitions. [2024-06-28 03:43:29,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 49 transitions, 320 flow [2024-06-28 03:43:29,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 49 transitions, 296 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:29,717 INFO L231 Difference]: Finished difference. Result has 76 places, 29 transitions, 153 flow [2024-06-28 03:43:29,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=153, PETRI_PLACES=76, PETRI_TRANSITIONS=29} [2024-06-28 03:43:29,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-28 03:43:29,718 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 29 transitions, 153 flow [2024-06-28 03:43:29,718 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) [2024-06-28 03:43:29,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:29,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:29,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:43:29,718 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:29,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:29,718 INFO L85 PathProgramCache]: Analyzing trace with hash -394045468, now seen corresponding path program 14 times [2024-06-28 03:43:29,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:29,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227318631] [2024-06-28 03:43:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:29,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:31,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:31,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227318631] [2024-06-28 03:43:31,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227318631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:31,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:31,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:31,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225462780] [2024-06-28 03:43:31,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:31,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:31,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:31,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 29 transitions, 153 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) [2024-06-28 03:43:31,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:31,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:31,617 INFO L124 PetriNetUnfolderBase]: 58/135 cut-off events. [2024-06-28 03:43:31,617 INFO L125 PetriNetUnfolderBase]: For 2151/2151 co-relation queries the response was YES. [2024-06-28 03:43:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 135 events. 58/135 cut-off events. For 2151/2151 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 360 event pairs, 22 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 462. Up to 62 conditions per place. [2024-06-28 03:43:31,618 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 21 selfloop transitions, 8 changer transitions 10/41 dead transitions. [2024-06-28 03:43:31,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 41 transitions, 261 flow [2024-06-28 03:43:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 88 transitions. [2024-06-28 03:43:31,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2838709677419355 [2024-06-28 03:43:31,619 INFO L175 Difference]: Start difference. First operand has 76 places, 29 transitions, 153 flow. Second operand 10 states and 88 transitions. [2024-06-28 03:43:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 41 transitions, 261 flow [2024-06-28 03:43:31,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 41 transitions, 233 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:43:31,620 INFO L231 Difference]: Finished difference. Result has 64 places, 25 transitions, 129 flow [2024-06-28 03:43:31,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=129, PETRI_PLACES=64, PETRI_TRANSITIONS=25} [2024-06-28 03:43:31,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 03:43:31,621 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 25 transitions, 129 flow [2024-06-28 03:43:31,621 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) [2024-06-28 03:43:31,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:31,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:31,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:43:31,622 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:31,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:31,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1723255252, now seen corresponding path program 15 times [2024-06-28 03:43:31,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:31,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107106205] [2024-06-28 03:43:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:31,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107106205] [2024-06-28 03:43:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107106205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108506546] [2024-06-28 03:43:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:33,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:33,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 25 transitions, 129 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) [2024-06-28 03:43:33,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:33,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:33,311 INFO L124 PetriNetUnfolderBase]: 49/116 cut-off events. [2024-06-28 03:43:33,311 INFO L125 PetriNetUnfolderBase]: For 1346/1346 co-relation queries the response was YES. [2024-06-28 03:43:33,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 116 events. 49/116 cut-off events. For 1346/1346 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 275 event pairs, 16 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 386. Up to 52 conditions per place. [2024-06-28 03:43:33,311 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 7 changer transitions 11/38 dead transitions. [2024-06-28 03:43:33,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 38 transitions, 229 flow [2024-06-28 03:43:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 92 transitions. [2024-06-28 03:43:33,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2697947214076246 [2024-06-28 03:43:33,312 INFO L175 Difference]: Start difference. First operand has 64 places, 25 transitions, 129 flow. Second operand 11 states and 92 transitions. [2024-06-28 03:43:33,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 38 transitions, 229 flow [2024-06-28 03:43:33,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 38 transitions, 205 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:33,314 INFO L231 Difference]: Finished difference. Result has 59 places, 22 transitions, 108 flow [2024-06-28 03:43:33,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=22} [2024-06-28 03:43:33,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-28 03:43:33,314 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 22 transitions, 108 flow [2024-06-28 03:43:33,315 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) [2024-06-28 03:43:33,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:33,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:43:33,315 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:33,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash -513878162, now seen corresponding path program 16 times [2024-06-28 03:43:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:33,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112011975] [2024-06-28 03:43:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:35,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:35,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112011975] [2024-06-28 03:43:35,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112011975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:35,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:35,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778775345] [2024-06-28 03:43:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:35,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:35,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 22 transitions, 108 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) [2024-06-28 03:43:35,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:35,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:35,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:35,289 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-28 03:43:35,289 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-28 03:43:35,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 65 events. 24/65 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 1 based on Foata normal form. 6/70 useless extension candidates. Maximal degree in co-relation 172. Up to 32 conditions per place. [2024-06-28 03:43:35,290 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-06-28 03:43:35,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 28 transitions, 148 flow [2024-06-28 03:43:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 77 transitions. [2024-06-28 03:43:35,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24838709677419354 [2024-06-28 03:43:35,291 INFO L175 Difference]: Start difference. First operand has 59 places, 22 transitions, 108 flow. Second operand 10 states and 77 transitions. [2024-06-28 03:43:35,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 28 transitions, 148 flow [2024-06-28 03:43:35,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 114 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-28 03:43:35,291 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-28 03:43:35,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=10, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-28 03:43:35,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 03:43:35,291 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-28 03:43:35,292 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) [2024-06-28 03:43:35,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:43:35,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:43:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:43:35,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:43:35,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:43:35,295 INFO L445 BasicCegarLoop]: Path program histogram: [41, 24, 23, 16, 14, 10, 9, 9, 6, 6, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:35,298 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:43:35,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:43:35,302 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:43:35,302 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:43:35,303 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:43:35 BasicIcfg [2024-06-28 03:43:35,303 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:43:35,303 INFO L158 Benchmark]: Toolchain (without parser) took 327234.60ms. Allocated memory was 184.5MB in the beginning and 1.2GB in the end (delta: 977.3MB). Free memory was 119.2MB in the beginning and 559.5MB in the end (delta: -440.3MB). Peak memory consumption was 540.2MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,304 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:43:35,304 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:43:35,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.79ms. Allocated memory is still 184.5MB. Free memory was 118.8MB in the beginning and 82.7MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.15ms. Allocated memory is still 184.5MB. Free memory was 82.7MB in the beginning and 79.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,305 INFO L158 Benchmark]: Boogie Preprocessor took 52.31ms. Allocated memory is still 184.5MB. Free memory was 79.4MB in the beginning and 75.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,305 INFO L158 Benchmark]: RCFGBuilder took 851.39ms. Allocated memory was 184.5MB in the beginning and 257.9MB in the end (delta: 73.4MB). Free memory was 75.2MB in the beginning and 182.4MB in the end (delta: -107.1MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,305 INFO L158 Benchmark]: TraceAbstraction took 325559.79ms. Allocated memory was 257.9MB in the beginning and 1.2GB in the end (delta: 903.9MB). Free memory was 181.3MB in the beginning and 559.5MB in the end (delta: -378.2MB). Peak memory consumption was 525.7MB. Max. memory is 16.1GB. [2024-06-28 03:43:35,307 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 147.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 184.5MB. Free memory is still 124.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.79ms. Allocated memory is still 184.5MB. Free memory was 118.8MB in the beginning and 82.7MB in the end (delta: 36.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.15ms. Allocated memory is still 184.5MB. Free memory was 82.7MB in the beginning and 79.4MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.31ms. Allocated memory is still 184.5MB. Free memory was 79.4MB in the beginning and 75.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 851.39ms. Allocated memory was 184.5MB in the beginning and 257.9MB in the end (delta: 73.4MB). Free memory was 75.2MB in the beginning and 182.4MB in the end (delta: -107.1MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * TraceAbstraction took 325559.79ms. Allocated memory was 257.9MB in the beginning and 1.2GB in the end (delta: 903.9MB). Free memory was 181.3MB in the beginning and 559.5MB in the end (delta: -378.2MB). Peak memory consumption was 525.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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: 325.4s, OverallIterations: 193, TraceHistogramMax: 1, PathProgramHistogramMax: 41, EmptinessCheckTime: 0.0s, AutomataDifference: 142.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10466 SdHoareTripleChecker+Valid, 45.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8889 mSDsluCounter, 10074 SdHoareTripleChecker+Invalid, 39.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8906 mSDsCounter, 3649 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68986 IncrementalHoareTripleChecker+Invalid, 72635 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3649 mSolverCounterUnsat, 1168 mSDtfsCounter, 68986 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2256 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4780 ImplicationChecksByTransitivity, 60.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4972occurred in iteration=120, InterpolantAutomatonStates: 1848, 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, 1.5s SatisfiabilityAnalysisTime, 179.9s InterpolantComputationTime, 3188 NumberOfCodeBlocks, 3188 NumberOfCodeBlocksAsserted, 193 NumberOfCheckSat, 2995 ConstructedInterpolants, 0 QuantifiedInterpolants, 121195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 193 InterpolantComputations, 193 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! [2024-06-28 03:43:35,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE