./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.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/protection/mix055_tso.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/mix055_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix055_tso.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 [2024-06-27 20:39:11,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:39:11,104 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:39:11,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:39:11,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:39:11,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:39:11,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:39:11,133 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:39:11,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:39:11,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:39:11,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:39:11,137 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:39:11,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:39:11,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:39:11,139 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:39:11,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:39:11,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:39:11,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:39:11,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:39:11,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:39:11,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:39:11,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:39:11,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:39:11,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:39:11,141 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:39:11,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:39:11,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:39:11,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:39:11,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:39:11,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:39:11,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:39:11,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:39:11,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:39:11,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:39:11,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:39:11,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:39:11,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:39:11,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:39:11,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:39:11,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:39:11,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:39:11,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:39:11,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:39:11,146 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:39:11,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:39:11,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:39:11,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:39:11,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:39:11,379 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:39:11,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-27 20:39:12,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:39:12,635 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:39:12,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_tso.oepc.i [2024-06-27 20:39:12,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a84649d/1ef85373b086413bbf63c1a2f46b1421/FLAG4d8990c33 [2024-06-27 20:39:12,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a84649d/1ef85373b086413bbf63c1a2f46b1421 [2024-06-27 20:39:12,659 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:39:12,659 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:39:12,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix055_tso.oepc.yml/witness.yml [2024-06-27 20:39:12,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:39:12,843 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:39:12,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:39:12,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:39:12,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:39:12,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:39:12" (1/2) ... [2024-06-27 20:39:12,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab091f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:39:12, skipping insertion in model container [2024-06-27 20:39:12,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:39:12" (1/2) ... [2024-06-27 20:39:12,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7ed0eb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:39:12, skipping insertion in model container [2024-06-27 20:39:12,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:39:12" (2/2) ... [2024-06-27 20:39:12,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab091f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:12, skipping insertion in model container [2024-06-27 20:39:12,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:39:12" (2/2) ... [2024-06-27 20:39:12,900 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:39:12,998 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:39:12,999 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ((((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 20:39:12,999 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 20:39:12,999 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 20:39:12,999 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ((((((((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0) [2024-06-27 20:39:12,999 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:39:12,999 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-27 20:39:13,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:39:13,371 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:39:13,383 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:39:13,470 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:39:13,499 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:39:13,499 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13 WrapperNode [2024-06-27 20:39:13,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:39:13,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:39:13,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:39:13,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:39:13,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,569 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 156 [2024-06-27 20:39:13,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:39:13,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:39:13,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:39:13,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:39:13,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,582 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,596 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 20:39:13,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:39:13,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:39:13,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:39:13,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:39:13,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (1/1) ... [2024-06-27 20:39:13,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:39:13,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:39:13,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 20:39:13,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 20:39:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:39:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:39:13,749 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:39:13,749 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:39:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:39:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:39:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:39:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:39:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 20:39:13,750 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 20:39:13,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:39:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:39:13,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:39:13,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:39:13,752 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 20:39:13,846 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:39:13,848 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:39:14,147 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:39:14,147 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:39:14,290 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:39:14,291 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:39:14,291 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:39:14 BoogieIcfgContainer [2024-06-27 20:39:14,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:39:14,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:39:14,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:39:14,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:39:14,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:39:12" (1/4) ... [2024-06-27 20:39:14,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:39:14, skipping insertion in model container [2024-06-27 20:39:14,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:39:12" (2/4) ... [2024-06-27 20:39:14,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88571 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:39:14, skipping insertion in model container [2024-06-27 20:39:14,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:39:13" (3/4) ... [2024-06-27 20:39:14,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b88571 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:39:14, skipping insertion in model container [2024-06-27 20:39:14,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:39:14" (4/4) ... [2024-06-27 20:39:14,298 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_tso.oepc.i [2024-06-27 20:39:14,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:39:14,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 20:39:14,310 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:39:14,374 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:39:14,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:39:14,436 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-27 20:39:14,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:39:14,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:39:14,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-27 20:39:14,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-27 20:39:14,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:39:14,460 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;@3b99a4b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:39:14,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 20:39:14,465 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:39:14,465 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 20:39:14,465 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:39:14,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:14,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:39:14,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:14,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash 391382252, now seen corresponding path program 1 times [2024-06-27 20:39:14,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329635947] [2024-06-27 20:39:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:15,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:15,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329635947] [2024-06-27 20:39:15,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329635947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:15,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:15,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:39:15,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633122489] [2024-06-27 20:39:15,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:39:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:39:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:39:15,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-27 20:39:15,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:15,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:15,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-27 20:39:15,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:16,985 INFO L124 PetriNetUnfolderBase]: 9903/13809 cut-off events. [2024-06-27 20:39:16,985 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-27 20:39:17,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27713 conditions, 13809 events. 9903/13809 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 75149 event pairs, 7667 based on Foata normal form. 1/13594 useless extension candidates. Maximal degree in co-relation 27700. Up to 13453 conditions per place. [2024-06-27 20:39:17,050 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 20:39:17,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 227 flow [2024-06-27 20:39:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:39:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:39:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-27 20:39:17,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2024-06-27 20:39:17,060 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 91 transitions. [2024-06-27 20:39:17,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 227 flow [2024-06-27 20:39:17,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:17,064 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-27 20:39:17,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 20:39:17,067 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 20:39:17,067 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-27 20:39:17,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:17,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:17,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:39:17,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:17,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:17,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1838756085, now seen corresponding path program 1 times [2024-06-27 20:39:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363851653] [2024-06-27 20:39:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:17,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:17,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363851653] [2024-06-27 20:39:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363851653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:17,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:17,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:39:17,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157606586] [2024-06-27 20:39:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:17,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:39:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:39:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:39:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:39:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:39:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:18,947 INFO L124 PetriNetUnfolderBase]: 11585/15735 cut-off events. [2024-06-27 20:39:18,947 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-27 20:39:18,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35854 conditions, 15735 events. 11585/15735 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81892 event pairs, 8249 based on Foata normal form. 4/15736 useless extension candidates. Maximal degree in co-relation 35842. Up to 15650 conditions per place. [2024-06-27 20:39:19,017 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-27 20:39:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 321 flow [2024-06-27 20:39:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:39:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:39:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-06-27 20:39:19,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-06-27 20:39:19,019 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 115 transitions. [2024-06-27 20:39:19,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 321 flow [2024-06-27 20:39:19,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:39:19,021 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-27 20:39:19,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 20:39:19,022 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-27 20:39:19,022 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-27 20:39:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:19,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:19,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:39:19,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:19,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:19,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1166863045, now seen corresponding path program 1 times [2024-06-27 20:39:19,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:19,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435135554] [2024-06-27 20:39:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:19,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:19,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:19,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:19,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435135554] [2024-06-27 20:39:19,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435135554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:19,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:19,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 20:39:19,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378383839] [2024-06-27 20:39:19,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:19,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 20:39:19,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:19,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 20:39:19,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 20:39:19,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:39:19,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:19,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:19,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:39:19,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:21,075 INFO L124 PetriNetUnfolderBase]: 11565/15709 cut-off events. [2024-06-27 20:39:21,075 INFO L125 PetriNetUnfolderBase]: For 8281/8281 co-relation queries the response was YES. [2024-06-27 20:39:21,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39745 conditions, 15709 events. 11565/15709 cut-off events. For 8281/8281 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81863 event pairs, 6611 based on Foata normal form. 8/15714 useless extension candidates. Maximal degree in co-relation 39731. Up to 15580 conditions per place. [2024-06-27 20:39:21,160 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 65 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2024-06-27 20:39:21,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 433 flow [2024-06-27 20:39:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:39:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:39:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-27 20:39:21,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568627450980392 [2024-06-27 20:39:21,166 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 142 transitions. [2024-06-27 20:39:21,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 433 flow [2024-06-27 20:39:21,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 84 transitions, 414 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:39:21,173 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 225 flow [2024-06-27 20:39:21,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 20:39:21,174 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-06-27 20:39:21,174 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 225 flow [2024-06-27 20:39:21,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:21,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:21,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:21,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:39:21,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:21,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash 489977308, now seen corresponding path program 1 times [2024-06-27 20:39:21,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328612426] [2024-06-27 20:39:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:21,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:22,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328612426] [2024-06-27 20:39:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328612426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:22,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:22,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:39:22,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042151399] [2024-06-27 20:39:22,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:22,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:39:22,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:22,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:39:22,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:39:22,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-27 20:39:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-27 20:39:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:23,941 INFO L124 PetriNetUnfolderBase]: 11549/15683 cut-off events. [2024-06-27 20:39:23,942 INFO L125 PetriNetUnfolderBase]: For 16071/16071 co-relation queries the response was YES. [2024-06-27 20:39:23,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43595 conditions, 15683 events. 11549/15683 cut-off events. For 16071/16071 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81489 event pairs, 5646 based on Foata normal form. 8/15688 useless extension candidates. Maximal degree in co-relation 43580. Up to 15514 conditions per place. [2024-06-27 20:39:24,028 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 72 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2024-06-27 20:39:24,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 517 flow [2024-06-27 20:39:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:39:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:39:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-27 20:39:24,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-06-27 20:39:24,030 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 225 flow. Second operand 6 states and 164 transitions. [2024-06-27 20:39:24,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 517 flow [2024-06-27 20:39:24,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 484 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 20:39:24,033 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 256 flow [2024-06-27 20:39:24,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 20:39:24,034 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 20:39:24,034 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 256 flow [2024-06-27 20:39:24,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:24,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:24,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:39:24,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:24,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash -575667842, now seen corresponding path program 1 times [2024-06-27 20:39:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:24,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386662971] [2024-06-27 20:39:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386662971] [2024-06-27 20:39:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386662971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:39:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812597810] [2024-06-27 20:39:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:24,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:39:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:39:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:39:24,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-27 20:39:24,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:24,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:24,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-27 20:39:24,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:25,710 INFO L124 PetriNetUnfolderBase]: 9848/13723 cut-off events. [2024-06-27 20:39:25,710 INFO L125 PetriNetUnfolderBase]: For 21341/21341 co-relation queries the response was YES. [2024-06-27 20:39:25,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40757 conditions, 13723 events. 9848/13723 cut-off events. For 21341/21341 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 74274 event pairs, 5737 based on Foata normal form. 3/13723 useless extension candidates. Maximal degree in co-relation 40740. Up to 13360 conditions per place. [2024-06-27 20:39:25,787 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 60 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-27 20:39:25,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 466 flow [2024-06-27 20:39:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:39:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:39:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 20:39:25,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2024-06-27 20:39:25,791 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 256 flow. Second operand 5 states and 117 transitions. [2024-06-27 20:39:25,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 466 flow [2024-06-27 20:39:25,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 76 transitions, 420 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:25,798 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 275 flow [2024-06-27 20:39:25,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 20:39:25,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 20:39:25,804 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 275 flow [2024-06-27 20:39:25,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:25,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:25,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:25,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:39:25,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:25,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:25,806 INFO L85 PathProgramCache]: Analyzing trace with hash -337716759, now seen corresponding path program 1 times [2024-06-27 20:39:25,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:25,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620392589] [2024-06-27 20:39:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:25,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:26,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620392589] [2024-06-27 20:39:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620392589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:26,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:26,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:39:26,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369684915] [2024-06-27 20:39:26,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:26,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:39:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:39:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:39:26,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:26,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:26,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:26,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:26,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:27,708 INFO L124 PetriNetUnfolderBase]: 11562/15701 cut-off events. [2024-06-27 20:39:27,708 INFO L125 PetriNetUnfolderBase]: For 36223/36223 co-relation queries the response was YES. [2024-06-27 20:39:27,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50568 conditions, 15701 events. 11562/15701 cut-off events. For 36223/36223 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81512 event pairs, 6742 based on Foata normal form. 3/15701 useless extension candidates. Maximal degree in co-relation 50549. Up to 15601 conditions per place. [2024-06-27 20:39:27,788 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 71 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-27 20:39:27,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 547 flow [2024-06-27 20:39:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:39:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:39:27,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 20:39:27,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477124183006536 [2024-06-27 20:39:27,789 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 275 flow. Second operand 6 states and 137 transitions. [2024-06-27 20:39:27,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 547 flow [2024-06-27 20:39:27,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 90 transitions, 514 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 20:39:27,795 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 321 flow [2024-06-27 20:39:27,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-06-27 20:39:27,796 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 20:39:27,796 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 321 flow [2024-06-27 20:39:27,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:27,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:27,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:39:27,797 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:27,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -315223779, now seen corresponding path program 2 times [2024-06-27 20:39:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:27,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184059278] [2024-06-27 20:39:27,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:27,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:28,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:28,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:28,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184059278] [2024-06-27 20:39:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184059278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:28,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:28,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:39:28,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126389131] [2024-06-27 20:39:28,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:28,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:39:28,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:39:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:39:28,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:28,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:28,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:28,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:29,926 INFO L124 PetriNetUnfolderBase]: 11553/15692 cut-off events. [2024-06-27 20:39:29,927 INFO L125 PetriNetUnfolderBase]: For 48964/48980 co-relation queries the response was YES. [2024-06-27 20:39:29,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54394 conditions, 15692 events. 11553/15692 cut-off events. For 48964/48980 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 81318 event pairs, 6702 based on Foata normal form. 15/15702 useless extension candidates. Maximal degree in co-relation 54374. Up to 15559 conditions per place. [2024-06-27 20:39:30,020 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 65 selfloop transitions, 21 changer transitions 0/91 dead transitions. [2024-06-27 20:39:30,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 91 transitions, 595 flow [2024-06-27 20:39:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:39:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:39:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 20:39:30,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 20:39:30,022 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 321 flow. Second operand 6 states and 136 transitions. [2024-06-27 20:39:30,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 91 transitions, 595 flow [2024-06-27 20:39:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 548 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:30,030 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 375 flow [2024-06-27 20:39:30,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-27 20:39:30,031 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 20:39:30,031 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 375 flow [2024-06-27 20:39:30,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:30,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:30,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:39:30,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:30,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 834044509, now seen corresponding path program 1 times [2024-06-27 20:39:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001415116] [2024-06-27 20:39:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:30,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001415116] [2024-06-27 20:39:30,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001415116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:30,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:30,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:39:30,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97048920] [2024-06-27 20:39:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:39:30,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:30,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:39:30,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:39:31,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:31,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 375 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:31,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:31,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:31,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:32,649 INFO L124 PetriNetUnfolderBase]: 11976/16575 cut-off events. [2024-06-27 20:39:32,650 INFO L125 PetriNetUnfolderBase]: For 63841/63841 co-relation queries the response was YES. [2024-06-27 20:39:32,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60302 conditions, 16575 events. 11976/16575 cut-off events. For 63841/63841 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 88975 event pairs, 6804 based on Foata normal form. 3/16575 useless extension candidates. Maximal degree in co-relation 60281. Up to 16170 conditions per place. [2024-06-27 20:39:32,741 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 83 selfloop transitions, 18 changer transitions 0/106 dead transitions. [2024-06-27 20:39:32,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 718 flow [2024-06-27 20:39:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:39:32,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:39:32,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 20:39:32,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341736694677871 [2024-06-27 20:39:32,743 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 375 flow. Second operand 7 states and 155 transitions. [2024-06-27 20:39:32,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 718 flow [2024-06-27 20:39:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 644 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:32,757 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 424 flow [2024-06-27 20:39:32,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2024-06-27 20:39:32,757 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 20:39:32,757 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 424 flow [2024-06-27 20:39:32,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:32,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:32,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:32,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:39:32,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:32,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1879403235, now seen corresponding path program 1 times [2024-06-27 20:39:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268176718] [2024-06-27 20:39:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:33,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268176718] [2024-06-27 20:39:33,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268176718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:33,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:33,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:39:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622521000] [2024-06-27 20:39:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:39:33,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:39:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:39:33,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:33,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 424 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:33,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:33,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:33,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:35,032 INFO L124 PetriNetUnfolderBase]: 13790/18697 cut-off events. [2024-06-27 20:39:35,032 INFO L125 PetriNetUnfolderBase]: For 97667/97683 co-relation queries the response was YES. [2024-06-27 20:39:35,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74414 conditions, 18697 events. 13790/18697 cut-off events. For 97667/97683 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 98552 event pairs, 6953 based on Foata normal form. 6/18700 useless extension candidates. Maximal degree in co-relation 74391. Up to 18525 conditions per place. [2024-06-27 20:39:35,168 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 93 selfloop transitions, 22 changer transitions 0/121 dead transitions. [2024-06-27 20:39:35,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 121 transitions, 814 flow [2024-06-27 20:39:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:39:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:39:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 20:39:35,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-27 20:39:35,170 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 424 flow. Second operand 7 states and 163 transitions. [2024-06-27 20:39:35,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 121 transitions, 814 flow [2024-06-27 20:39:35,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 121 transitions, 753 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:35,191 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 495 flow [2024-06-27 20:39:35,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-27 20:39:35,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 20:39:35,192 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 495 flow [2024-06-27 20:39:35,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:35,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:35,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:35,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:39:35,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:35,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash -88826631, now seen corresponding path program 2 times [2024-06-27 20:39:35,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:35,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208670535] [2024-06-27 20:39:35,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:35,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:35,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:35,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208670535] [2024-06-27 20:39:35,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208670535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:35,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:39:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634490466] [2024-06-27 20:39:35,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:35,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:39:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:39:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:39:36,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:36,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 495 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:36,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:36,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:36,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:37,728 INFO L124 PetriNetUnfolderBase]: 14014/19003 cut-off events. [2024-06-27 20:39:37,728 INFO L125 PetriNetUnfolderBase]: For 127479/127495 co-relation queries the response was YES. [2024-06-27 20:39:37,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82012 conditions, 19003 events. 14014/19003 cut-off events. For 127479/127495 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 100188 event pairs, 6728 based on Foata normal form. 28/19028 useless extension candidates. Maximal degree in co-relation 81987. Up to 18640 conditions per place. [2024-06-27 20:39:37,839 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 95 selfloop transitions, 32 changer transitions 0/133 dead transitions. [2024-06-27 20:39:37,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 133 transitions, 1033 flow [2024-06-27 20:39:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:39:37,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:39:37,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 20:39:37,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-27 20:39:37,841 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 495 flow. Second operand 7 states and 168 transitions. [2024-06-27 20:39:37,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 133 transitions, 1033 flow [2024-06-27 20:39:37,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 969 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 20:39:37,862 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 653 flow [2024-06-27 20:39:37,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2024-06-27 20:39:37,862 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-27 20:39:37,862 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 653 flow [2024-06-27 20:39:37,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:37,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:37,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:37,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:39:37,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:37,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash 88304889, now seen corresponding path program 3 times [2024-06-27 20:39:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217821759] [2024-06-27 20:39:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:37,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:38,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217821759] [2024-06-27 20:39:38,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217821759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:38,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:38,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:39:38,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812435060] [2024-06-27 20:39:38,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:39:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:39:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:39:38,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:38,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:38,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:40,426 INFO L124 PetriNetUnfolderBase]: 14052/19064 cut-off events. [2024-06-27 20:39:40,427 INFO L125 PetriNetUnfolderBase]: For 162193/162243 co-relation queries the response was YES. [2024-06-27 20:39:40,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89161 conditions, 19064 events. 14052/19064 cut-off events. For 162193/162243 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 101022 event pairs, 6352 based on Foata normal form. 30/19085 useless extension candidates. Maximal degree in co-relation 89134. Up to 18502 conditions per place. [2024-06-27 20:39:40,550 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 87 selfloop transitions, 51 changer transitions 0/144 dead transitions. [2024-06-27 20:39:40,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 1303 flow [2024-06-27 20:39:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:39:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:39:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 20:39:40,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484593837535014 [2024-06-27 20:39:40,552 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 653 flow. Second operand 7 states and 173 transitions. [2024-06-27 20:39:40,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 1303 flow [2024-06-27 20:39:40,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 144 transitions, 1235 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 20:39:40,580 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 862 flow [2024-06-27 20:39:40,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2024-06-27 20:39:40,581 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 20:39:40,581 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 862 flow [2024-06-27 20:39:40,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:40,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:40,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:40,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:39:40,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:40,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:40,582 INFO L85 PathProgramCache]: Analyzing trace with hash 85577923, now seen corresponding path program 1 times [2024-06-27 20:39:40,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:40,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283229709] [2024-06-27 20:39:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:40,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:41,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283229709] [2024-06-27 20:39:41,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283229709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:41,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:41,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:39:41,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918735647] [2024-06-27 20:39:41,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:41,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:39:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:39:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:39:41,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:41,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 862 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:41,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:41,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:41,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:43,234 INFO L124 PetriNetUnfolderBase]: 12368/16997 cut-off events. [2024-06-27 20:39:43,234 INFO L125 PetriNetUnfolderBase]: For 164139/164139 co-relation queries the response was YES. [2024-06-27 20:39:43,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83045 conditions, 16997 events. 12368/16997 cut-off events. For 164139/164139 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 90370 event pairs, 5500 based on Foata normal form. 6/17000 useless extension candidates. Maximal degree in co-relation 83015. Up to 16677 conditions per place. [2024-06-27 20:39:43,373 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 119 selfloop transitions, 21 changer transitions 0/145 dead transitions. [2024-06-27 20:39:43,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 145 transitions, 1298 flow [2024-06-27 20:39:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:39:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:39:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 20:39:43,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-27 20:39:43,375 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 862 flow. Second operand 8 states and 176 transitions. [2024-06-27 20:39:43,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 145 transitions, 1298 flow [2024-06-27 20:39:43,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1149 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:43,448 INFO L231 Difference]: Finished difference. Result has 89 places, 106 transitions, 827 flow [2024-06-27 20:39:43,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=89, PETRI_TRANSITIONS=106} [2024-06-27 20:39:43,449 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 20:39:43,449 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 106 transitions, 827 flow [2024-06-27 20:39:43,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:43,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:43,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:43,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:39:43,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:43,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1178784783, now seen corresponding path program 1 times [2024-06-27 20:39:43,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:43,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722640532] [2024-06-27 20:39:43,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:43,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:43,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:43,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722640532] [2024-06-27 20:39:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722640532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:43,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:39:43,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491737429] [2024-06-27 20:39:43,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:43,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:39:43,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:39:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:39:43,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:43,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 106 transitions, 827 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:43,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:43,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:43,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:45,440 INFO L124 PetriNetUnfolderBase]: 12361/17146 cut-off events. [2024-06-27 20:39:45,440 INFO L125 PetriNetUnfolderBase]: For 166353/166353 co-relation queries the response was YES. [2024-06-27 20:39:45,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82766 conditions, 17146 events. 12361/17146 cut-off events. For 166353/166353 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 92131 event pairs, 5561 based on Foata normal form. 2/17145 useless extension candidates. Maximal degree in co-relation 82735. Up to 16734 conditions per place. [2024-06-27 20:39:45,553 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 109 selfloop transitions, 10 changer transitions 0/124 dead transitions. [2024-06-27 20:39:45,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 1147 flow [2024-06-27 20:39:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:39:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:39:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-27 20:39:45,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42745098039215684 [2024-06-27 20:39:45,555 INFO L175 Difference]: Start difference. First operand has 89 places, 106 transitions, 827 flow. Second operand 5 states and 109 transitions. [2024-06-27 20:39:45,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 1147 flow [2024-06-27 20:39:45,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 1063 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:39:45,631 INFO L231 Difference]: Finished difference. Result has 88 places, 110 transitions, 826 flow [2024-06-27 20:39:45,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=88, PETRI_TRANSITIONS=110} [2024-06-27 20:39:45,632 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-27 20:39:45,633 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 110 transitions, 826 flow [2024-06-27 20:39:45,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:45,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:45,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:45,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:39:45,634 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:45,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1537534158, now seen corresponding path program 1 times [2024-06-27 20:39:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:45,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899569388] [2024-06-27 20:39:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:46,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:46,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899569388] [2024-06-27 20:39:46,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899569388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:46,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:46,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:39:46,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309653121] [2024-06-27 20:39:46,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:46,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:39:46,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:46,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:39:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:39:46,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:39:46,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 826 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:46,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:46,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:39:46,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:48,510 INFO L124 PetriNetUnfolderBase]: 14021/19015 cut-off events. [2024-06-27 20:39:48,510 INFO L125 PetriNetUnfolderBase]: For 229351/229383 co-relation queries the response was YES. [2024-06-27 20:39:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99561 conditions, 19015 events. 14021/19015 cut-off events. For 229351/229383 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 100400 event pairs, 6291 based on Foata normal form. 11/19023 useless extension candidates. Maximal degree in co-relation 99529. Up to 18828 conditions per place. [2024-06-27 20:39:48,656 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 121 selfloop transitions, 25 changer transitions 0/152 dead transitions. [2024-06-27 20:39:48,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 152 transitions, 1287 flow [2024-06-27 20:39:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:39:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:39:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 20:39:48,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-27 20:39:48,657 INFO L175 Difference]: Start difference. First operand has 88 places, 110 transitions, 826 flow. Second operand 7 states and 163 transitions. [2024-06-27 20:39:48,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 152 transitions, 1287 flow [2024-06-27 20:39:48,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 1234 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 20:39:48,719 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 916 flow [2024-06-27 20:39:48,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=916, PETRI_PLACES=92, PETRI_TRANSITIONS=114} [2024-06-27 20:39:48,719 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 20:39:48,719 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 916 flow [2024-06-27 20:39:48,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:48,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:48,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:39:48,720 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:48,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1541349390, now seen corresponding path program 1 times [2024-06-27 20:39:48,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:48,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920605848] [2024-06-27 20:39:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:48,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:49,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920605848] [2024-06-27 20:39:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920605848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:49,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:39:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055093076] [2024-06-27 20:39:49,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:49,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:39:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:49,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:39:49,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:39:49,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:39:49,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 916 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:49,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:49,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:39:49,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:51,496 INFO L124 PetriNetUnfolderBase]: 14356/19381 cut-off events. [2024-06-27 20:39:51,496 INFO L125 PetriNetUnfolderBase]: For 244184/244184 co-relation queries the response was YES. [2024-06-27 20:39:51,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100305 conditions, 19381 events. 14356/19381 cut-off events. For 244184/244184 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99318 event pairs, 6127 based on Foata normal form. 9/19387 useless extension candidates. Maximal degree in co-relation 100272. Up to 19021 conditions per place. [2024-06-27 20:39:51,664 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 122 selfloop transitions, 48 changer transitions 0/174 dead transitions. [2024-06-27 20:39:51,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 1524 flow [2024-06-27 20:39:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:39:51,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:39:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-27 20:39:51,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-06-27 20:39:51,667 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 916 flow. Second operand 8 states and 180 transitions. [2024-06-27 20:39:51,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 1524 flow [2024-06-27 20:39:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1374 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 20:39:51,790 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1042 flow [2024-06-27 20:39:51,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1042, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-27 20:39:51,791 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-27 20:39:51,791 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1042 flow [2024-06-27 20:39:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:51,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:51,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:51,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:39:51,792 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:51,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2015659114, now seen corresponding path program 2 times [2024-06-27 20:39:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:51,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888650016] [2024-06-27 20:39:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888650016] [2024-06-27 20:39:53,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888650016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:53,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:39:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26100196] [2024-06-27 20:39:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:53,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:39:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:39:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:39:53,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:39:53,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1042 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:53,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:53,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:39:53,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:54,883 INFO L124 PetriNetUnfolderBase]: 14400/19444 cut-off events. [2024-06-27 20:39:54,884 INFO L125 PetriNetUnfolderBase]: For 266725/266743 co-relation queries the response was YES. [2024-06-27 20:39:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103003 conditions, 19444 events. 14400/19444 cut-off events. For 266725/266743 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99717 event pairs, 6137 based on Foata normal form. 17/19456 useless extension candidates. Maximal degree in co-relation 102968. Up to 19284 conditions per place. [2024-06-27 20:39:55,047 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 138 selfloop transitions, 35 changer transitions 0/177 dead transitions. [2024-06-27 20:39:55,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 177 transitions, 1590 flow [2024-06-27 20:39:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:39:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:39:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 20:39:55,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42401960784313725 [2024-06-27 20:39:55,049 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1042 flow. Second operand 8 states and 173 transitions. [2024-06-27 20:39:55,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 177 transitions, 1590 flow [2024-06-27 20:39:55,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 177 transitions, 1514 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 20:39:55,196 INFO L231 Difference]: Finished difference. Result has 101 places, 138 transitions, 1163 flow [2024-06-27 20:39:55,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1163, PETRI_PLACES=101, PETRI_TRANSITIONS=138} [2024-06-27 20:39:55,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-27 20:39:55,197 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 138 transitions, 1163 flow [2024-06-27 20:39:55,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:55,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:55,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:55,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:39:55,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:55,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1642326562, now seen corresponding path program 3 times [2024-06-27 20:39:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905935659] [2024-06-27 20:39:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:39:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:39:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:39:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905935659] [2024-06-27 20:39:56,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905935659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:39:56,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:39:56,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:39:56,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899867547] [2024-06-27 20:39:56,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:39:56,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:39:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:39:56,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:39:56,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:39:56,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:39:56,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 138 transitions, 1163 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:56,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:39:56,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:39:56,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:39:58,941 INFO L124 PetriNetUnfolderBase]: 14422/19474 cut-off events. [2024-06-27 20:39:58,941 INFO L125 PetriNetUnfolderBase]: For 291770/291788 co-relation queries the response was YES. [2024-06-27 20:39:58,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105633 conditions, 19474 events. 14422/19474 cut-off events. For 291770/291788 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99796 event pairs, 6137 based on Foata normal form. 17/19486 useless extension candidates. Maximal degree in co-relation 105595. Up to 19314 conditions per place. [2024-06-27 20:39:59,067 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 141 selfloop transitions, 40 changer transitions 0/185 dead transitions. [2024-06-27 20:39:59,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 185 transitions, 1741 flow [2024-06-27 20:39:59,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:39:59,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:39:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 20:39:59,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-06-27 20:39:59,068 INFO L175 Difference]: Start difference. First operand has 101 places, 138 transitions, 1163 flow. Second operand 8 states and 172 transitions. [2024-06-27 20:39:59,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 185 transitions, 1741 flow [2024-06-27 20:39:59,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 185 transitions, 1622 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 20:39:59,174 INFO L231 Difference]: Finished difference. Result has 105 places, 147 transitions, 1276 flow [2024-06-27 20:39:59,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=105, PETRI_TRANSITIONS=147} [2024-06-27 20:39:59,175 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-27 20:39:59,175 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 147 transitions, 1276 flow [2024-06-27 20:39:59,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:39:59,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:39:59,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:39:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:39:59,176 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:39:59,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:39:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2015868364, now seen corresponding path program 4 times [2024-06-27 20:39:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:39:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505189354] [2024-06-27 20:39:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:39:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:39:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:00,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:00,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505189354] [2024-06-27 20:40:00,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505189354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:00,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:00,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396040574] [2024-06-27 20:40:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:00,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:40:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 147 transitions, 1276 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:00,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:40:00,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:02,446 INFO L124 PetriNetUnfolderBase]: 14401/19444 cut-off events. [2024-06-27 20:40:02,446 INFO L125 PetriNetUnfolderBase]: For 314329/314347 co-relation queries the response was YES. [2024-06-27 20:40:02,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107023 conditions, 19444 events. 14401/19444 cut-off events. For 314329/314347 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 99716 event pairs, 6137 based on Foata normal form. 17/19456 useless extension candidates. Maximal degree in co-relation 106983. Up to 19224 conditions per place. [2024-06-27 20:40:02,620 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 138 selfloop transitions, 56 changer transitions 0/198 dead transitions. [2024-06-27 20:40:02,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 198 transitions, 1866 flow [2024-06-27 20:40:02,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 20:40:02,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.420479302832244 [2024-06-27 20:40:02,623 INFO L175 Difference]: Start difference. First operand has 105 places, 147 transitions, 1276 flow. Second operand 9 states and 193 transitions. [2024-06-27 20:40:02,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 198 transitions, 1866 flow [2024-06-27 20:40:02,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 198 transitions, 1772 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 20:40:02,800 INFO L231 Difference]: Finished difference. Result has 112 places, 153 transitions, 1423 flow [2024-06-27 20:40:02,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1423, PETRI_PLACES=112, PETRI_TRANSITIONS=153} [2024-06-27 20:40:02,801 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-27 20:40:02,801 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 153 transitions, 1423 flow [2024-06-27 20:40:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:02,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:02,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:40:02,802 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:02,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2112378865, now seen corresponding path program 1 times [2024-06-27 20:40:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175434798] [2024-06-27 20:40:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:03,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:03,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175434798] [2024-06-27 20:40:03,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175434798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:03,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679544878] [2024-06-27 20:40:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:03,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:03,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:03,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 153 transitions, 1423 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:03,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:03,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:03,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:05,537 INFO L124 PetriNetUnfolderBase]: 12375/17176 cut-off events. [2024-06-27 20:40:05,538 INFO L125 PetriNetUnfolderBase]: For 282635/282635 co-relation queries the response was YES. [2024-06-27 20:40:05,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95252 conditions, 17176 events. 12375/17176 cut-off events. For 282635/282635 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 92208 event pairs, 5068 based on Foata normal form. 8/17180 useless extension candidates. Maximal degree in co-relation 95210. Up to 16662 conditions per place. [2024-06-27 20:40:05,729 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 165 selfloop transitions, 22 changer transitions 0/192 dead transitions. [2024-06-27 20:40:05,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 192 transitions, 2065 flow [2024-06-27 20:40:05,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 20:40:05,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-27 20:40:05,731 INFO L175 Difference]: Start difference. First operand has 112 places, 153 transitions, 1423 flow. Second operand 6 states and 138 transitions. [2024-06-27 20:40:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 192 transitions, 2065 flow [2024-06-27 20:40:05,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 192 transitions, 1910 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:05,911 INFO L231 Difference]: Finished difference. Result has 114 places, 167 transitions, 1496 flow [2024-06-27 20:40:05,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1496, PETRI_PLACES=114, PETRI_TRANSITIONS=167} [2024-06-27 20:40:05,911 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 20:40:05,911 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 167 transitions, 1496 flow [2024-06-27 20:40:05,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:05,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:05,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:40:05,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:05,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1488574752, now seen corresponding path program 1 times [2024-06-27 20:40:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484852238] [2024-06-27 20:40:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:06,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:06,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484852238] [2024-06-27 20:40:06,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484852238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:06,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:06,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:40:06,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347137695] [2024-06-27 20:40:06,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:06,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:40:06,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:06,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:40:06,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:40:06,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:06,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 167 transitions, 1496 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:06,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:06,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:06,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:09,053 INFO L124 PetriNetUnfolderBase]: 13917/18987 cut-off events. [2024-06-27 20:40:09,054 INFO L125 PetriNetUnfolderBase]: For 362058/362058 co-relation queries the response was YES. [2024-06-27 20:40:09,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112333 conditions, 18987 events. 13917/18987 cut-off events. For 362058/362058 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 100365 event pairs, 4880 based on Foata normal form. 6/18990 useless extension candidates. Maximal degree in co-relation 112288. Up to 18720 conditions per place. [2024-06-27 20:40:09,254 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 184 selfloop transitions, 23 changer transitions 0/216 dead transitions. [2024-06-27 20:40:09,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 216 transitions, 2098 flow [2024-06-27 20:40:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 20:40:09,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2024-06-27 20:40:09,256 INFO L175 Difference]: Start difference. First operand has 114 places, 167 transitions, 1496 flow. Second operand 8 states and 183 transitions. [2024-06-27 20:40:09,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 216 transitions, 2098 flow [2024-06-27 20:40:09,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 216 transitions, 2052 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 20:40:09,497 INFO L231 Difference]: Finished difference. Result has 121 places, 170 transitions, 1582 flow [2024-06-27 20:40:09,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1582, PETRI_PLACES=121, PETRI_TRANSITIONS=170} [2024-06-27 20:40:09,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-27 20:40:09,497 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 170 transitions, 1582 flow [2024-06-27 20:40:09,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:09,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:09,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:40:09,498 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:09,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 418920376, now seen corresponding path program 2 times [2024-06-27 20:40:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:09,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743136021] [2024-06-27 20:40:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:10,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:10,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:10,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743136021] [2024-06-27 20:40:10,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743136021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:10,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:10,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:40:10,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439596917] [2024-06-27 20:40:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:10,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:40:10,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:10,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:40:10,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:40:10,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:10,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 170 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:10,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:10,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:10,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:13,218 INFO L124 PetriNetUnfolderBase]: 13981/19083 cut-off events. [2024-06-27 20:40:13,218 INFO L125 PetriNetUnfolderBase]: For 406904/406904 co-relation queries the response was YES. [2024-06-27 20:40:13,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116647 conditions, 19083 events. 13981/19083 cut-off events. For 406904/406904 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 101020 event pairs, 5503 based on Foata normal form. 12/19092 useless extension candidates. Maximal degree in co-relation 116599. Up to 18767 conditions per place. [2024-06-27 20:40:13,368 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 176 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-27 20:40:13,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 219 transitions, 2198 flow [2024-06-27 20:40:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 20:40:13,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-27 20:40:13,370 INFO L175 Difference]: Start difference. First operand has 121 places, 170 transitions, 1582 flow. Second operand 8 states and 184 transitions. [2024-06-27 20:40:13,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 219 transitions, 2198 flow [2024-06-27 20:40:13,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 219 transitions, 2092 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:13,566 INFO L231 Difference]: Finished difference. Result has 123 places, 173 transitions, 1639 flow [2024-06-27 20:40:13,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1639, PETRI_PLACES=123, PETRI_TRANSITIONS=173} [2024-06-27 20:40:13,567 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-27 20:40:13,567 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 173 transitions, 1639 flow [2024-06-27 20:40:13,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:13,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:13,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:13,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:40:13,568 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:13,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 537008056, now seen corresponding path program 3 times [2024-06-27 20:40:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:13,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113402445] [2024-06-27 20:40:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113402445] [2024-06-27 20:40:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113402445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:14,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:14,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:40:14,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866776913] [2024-06-27 20:40:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:40:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:40:14,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:40:14,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-27 20:40:14,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 173 transitions, 1639 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:14,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:14,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-27 20:40:14,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:17,414 INFO L124 PetriNetUnfolderBase]: 14201/19415 cut-off events. [2024-06-27 20:40:17,414 INFO L125 PetriNetUnfolderBase]: For 469725/469725 co-relation queries the response was YES. [2024-06-27 20:40:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122598 conditions, 19415 events. 14201/19415 cut-off events. For 469725/469725 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 103183 event pairs, 5526 based on Foata normal form. 42/19454 useless extension candidates. Maximal degree in co-relation 122549. Up to 18757 conditions per place. [2024-06-27 20:40:17,571 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 159 selfloop transitions, 56 changer transitions 0/224 dead transitions. [2024-06-27 20:40:17,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 224 transitions, 2287 flow [2024-06-27 20:40:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:40:17,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:40:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 20:40:17,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2024-06-27 20:40:17,572 INFO L175 Difference]: Start difference. First operand has 123 places, 173 transitions, 1639 flow. Second operand 8 states and 190 transitions. [2024-06-27 20:40:17,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 224 transitions, 2287 flow [2024-06-27 20:40:17,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 224 transitions, 2156 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:17,813 INFO L231 Difference]: Finished difference. Result has 125 places, 176 transitions, 1721 flow [2024-06-27 20:40:17,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1721, PETRI_PLACES=125, PETRI_TRANSITIONS=176} [2024-06-27 20:40:17,814 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-27 20:40:17,814 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 176 transitions, 1721 flow [2024-06-27 20:40:17,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:17,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:17,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:17,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:40:17,815 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:17,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2104714120, now seen corresponding path program 1 times [2024-06-27 20:40:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:17,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766475310] [2024-06-27 20:40:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:18,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766475310] [2024-06-27 20:40:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766475310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:18,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:18,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:40:18,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261460685] [2024-06-27 20:40:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:40:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:40:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:40:19,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:40:19,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 176 transitions, 1721 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:19,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:19,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:40:19,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:21,691 INFO L124 PetriNetUnfolderBase]: 14863/20109 cut-off events. [2024-06-27 20:40:21,691 INFO L125 PetriNetUnfolderBase]: For 511492/511492 co-relation queries the response was YES. [2024-06-27 20:40:21,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127929 conditions, 20109 events. 14863/20109 cut-off events. For 511492/511492 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 104003 event pairs, 5773 based on Foata normal form. 6/20112 useless extension candidates. Maximal degree in co-relation 127879. Up to 19997 conditions per place. [2024-06-27 20:40:21,950 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 199 selfloop transitions, 25 changer transitions 0/228 dead transitions. [2024-06-27 20:40:21,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 228 transitions, 2373 flow [2024-06-27 20:40:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:40:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:40:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-27 20:40:21,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2024-06-27 20:40:21,952 INFO L175 Difference]: Start difference. First operand has 125 places, 176 transitions, 1721 flow. Second operand 9 states and 192 transitions. [2024-06-27 20:40:21,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 228 transitions, 2373 flow [2024-06-27 20:40:22,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 228 transitions, 2210 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 20:40:22,297 INFO L231 Difference]: Finished difference. Result has 128 places, 179 transitions, 1702 flow [2024-06-27 20:40:22,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1702, PETRI_PLACES=128, PETRI_TRANSITIONS=179} [2024-06-27 20:40:22,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 20:40:22,299 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 179 transitions, 1702 flow [2024-06-27 20:40:22,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:22,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:22,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:22,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:40:22,299 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:22,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1047795152, now seen corresponding path program 1 times [2024-06-27 20:40:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:22,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687897365] [2024-06-27 20:40:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:22,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:22,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:22,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687897365] [2024-06-27 20:40:22,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687897365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:22,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:22,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:40:22,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717377675] [2024-06-27 20:40:22,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:22,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:40:22,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:40:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:40:22,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:40:22,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 179 transitions, 1702 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:22,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:22,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:40:22,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:40:25,506 INFO L124 PetriNetUnfolderBase]: 14879/20131 cut-off events. [2024-06-27 20:40:25,506 INFO L125 PetriNetUnfolderBase]: For 541716/541722 co-relation queries the response was YES. [2024-06-27 20:40:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130187 conditions, 20131 events. 14879/20131 cut-off events. For 541716/541722 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 103646 event pairs, 5758 based on Foata normal form. 6/20133 useless extension candidates. Maximal degree in co-relation 130136. Up to 20064 conditions per place. [2024-06-27 20:40:25,878 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 188 selfloop transitions, 21 changer transitions 0/213 dead transitions. [2024-06-27 20:40:25,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 213 transitions, 2414 flow [2024-06-27 20:40:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:40:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:40:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 20:40:25,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-27 20:40:25,880 INFO L175 Difference]: Start difference. First operand has 128 places, 179 transitions, 1702 flow. Second operand 6 states and 132 transitions. [2024-06-27 20:40:25,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 213 transitions, 2414 flow [2024-06-27 20:40:26,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 213 transitions, 2273 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 20:40:26,209 INFO L231 Difference]: Finished difference. Result has 127 places, 187 transitions, 1760 flow [2024-06-27 20:40:26,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1760, PETRI_PLACES=127, PETRI_TRANSITIONS=187} [2024-06-27 20:40:26,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-27 20:40:26,210 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 187 transitions, 1760 flow [2024-06-27 20:40:26,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:26,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:40:26,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:40:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:40:26,210 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 20:40:26,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:40:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -810213974, now seen corresponding path program 1 times [2024-06-27 20:40:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:40:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13890659] [2024-06-27 20:40:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:40:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:40:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:40:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:40:27,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:40:27,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13890659] [2024-06-27 20:40:27,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13890659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:40:27,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:40:27,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:40:27,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209606067] [2024-06-27 20:40:27,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:40:27,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:40:27,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:40:27,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:40:27,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:40:27,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2024-06-27 20:40:27,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 187 transitions, 1760 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:40:27,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:40:27,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2024-06-27 20:40:27,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand