./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021_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/mutex-meet-nonrel/mix021_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/mix021_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix021_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 [2024-06-28 03:09:48,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:09:48,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:09:48,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:09:48,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:09:48,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:09:48,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:09:48,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:09:48,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:09:48,284 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:09:48,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:09:48,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:09:48,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:09:48,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:09:48,286 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:09:48,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:09:48,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:09:48,286 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:09:48,286 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:09:48,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:09:48,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:09:48,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:09:48,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:09:48,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:09:48,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:09:48,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:09:48,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:09:48,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:09:48,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:09:48,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:09:48,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:09:48,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:09:48,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:09:48,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:09:48,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:09:48,290 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:09:48,290 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:09:48,290 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:09:48,291 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:09:48,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:09:48,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:09:48,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:09:48,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:09:48,510 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:09:48,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2024-06-28 03:09:49,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:09:49,781 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:09:49,781 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_tso.oepc.i [2024-06-28 03:09:49,800 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9c01d21/ad12c183228f4c149dab65aa75c4caff/FLAGe88ffc1fc [2024-06-28 03:09:49,813 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9c01d21/ad12c183228f4c149dab65aa75c4caff [2024-06-28 03:09:49,815 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:09:49,815 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:09:49,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix021_tso.oepc.yml/witness.yml [2024-06-28 03:09:50,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:09:50,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:09:50,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:09:50,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:09:50,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:09:50,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:09:49" (1/2) ... [2024-06-28 03:09:50,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b563b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:09:50, skipping insertion in model container [2024-06-28 03:09:50,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:09:49" (1/2) ... [2024-06-28 03:09:50,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a6d229c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:09:50, skipping insertion in model container [2024-06-28 03:09:50,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:09:50" (2/2) ... [2024-06-28 03:09:50,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b563b1e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50, skipping insertion in model container [2024-06-28 03:09:50,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:09:50" (2/2) ... [2024-06-28 03:09:50,046 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:09:50,141 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:09:50,143 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:09:50,143 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:09:50,143 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:09:50,143 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd4 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd4 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1)) && (a == 0 || a == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || y$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:09:50,143 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:09:50,144 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 03:09:50,181 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:09:50,431 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:09:50,438 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:09:50,558 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:09:50,584 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:09:50,586 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50 WrapperNode [2024-06-28 03:09:50,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:09:50,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:09:50,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:09:50,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:09:50,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,656 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 157 [2024-06-28 03:09:50,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:09:50,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:09:50,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:09:50,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:09:50,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,692 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:09:50,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,692 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:09:50,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:09:50,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:09:50,709 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:09:50,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (1/1) ... [2024-06-28 03:09:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:09:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:09:50,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:09:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:09:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:09:50,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:09:50,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:09:50,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:09:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:09:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:09:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:09:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:09:50,771 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:09:50,771 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:09:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:09:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:09:50,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:09:50,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:09:50,773 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:09:50,881 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:09:50,883 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:09:51,216 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:09:51,217 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:09:51,390 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:09:51,390 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:09:51,391 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:09:51 BoogieIcfgContainer [2024-06-28 03:09:51,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:09:51,393 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:09:51,393 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:09:51,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:09:51,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:09:49" (1/4) ... [2024-06-28 03:09:51,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353f201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:09:51, skipping insertion in model container [2024-06-28 03:09:51,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:09:50" (2/4) ... [2024-06-28 03:09:51,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353f201 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:09:51, skipping insertion in model container [2024-06-28 03:09:51,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:09:50" (3/4) ... [2024-06-28 03:09:51,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3353f201 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:09:51, skipping insertion in model container [2024-06-28 03:09:51,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:09:51" (4/4) ... [2024-06-28 03:09:51,398 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_tso.oepc.i [2024-06-28 03:09:51,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:09:51,411 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:09:51,411 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:09:51,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:09:51,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:09:51,554 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-28 03:09:51,554 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:09:51,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:09:51,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-28 03:09:51,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-28 03:09:51,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:09:51,576 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;@30daba2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:09:51,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:09:51,579 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:09:51,579 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:09:51,579 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:09:51,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:51,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:09:51,580 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)] === [2024-06-28 03:09:51,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 389440905, now seen corresponding path program 1 times [2024-06-28 03:09:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796869610] [2024-06-28 03:09:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:52,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:52,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796869610] [2024-06-28 03:09:52,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796869610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:52,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:52,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:09:52,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094121563] [2024-06-28 03:09:52,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:52,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:09:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:52,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:09:52,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:09:52,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-06-28 03:09:52,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:52,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:52,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-06-28 03:09:52,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:53,871 INFO L124 PetriNetUnfolderBase]: 8188/11796 cut-off events. [2024-06-28 03:09:53,872 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-06-28 03:09:53,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23349 conditions, 11796 events. 8188/11796 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 67309 event pairs, 6210 based on Foata normal form. 1/11430 useless extension candidates. Maximal degree in co-relation 23336. Up to 11164 conditions per place. [2024-06-28 03:09:53,932 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 42 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-06-28 03:09:53,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 227 flow [2024-06-28 03:09:53,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:09:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:09:53,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 03:09:53,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-28 03:09:53,944 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 96 transitions. [2024-06-28 03:09:53,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 227 flow [2024-06-28 03:09:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:09:53,950 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-28 03:09:53,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 03:09:53,967 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-28 03:09:53,967 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-28 03:09:53,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:53,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:53,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:53,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:09:53,968 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)] === [2024-06-28 03:09:53,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash 590575656, now seen corresponding path program 1 times [2024-06-28 03:09:53,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:53,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275307063] [2024-06-28 03:09:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:54,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:54,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:54,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275307063] [2024-06-28 03:09:54,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275307063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:54,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:54,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:09:54,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083898648] [2024-06-28 03:09:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:54,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:09:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:54,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:09:54,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:09:54,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:09:54,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:54,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:54,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:09:54,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:55,758 INFO L124 PetriNetUnfolderBase]: 9573/13387 cut-off events. [2024-06-28 03:09:55,758 INFO L125 PetriNetUnfolderBase]: For 2477/2477 co-relation queries the response was YES. [2024-06-28 03:09:55,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30225 conditions, 13387 events. 9573/13387 cut-off events. For 2477/2477 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 73607 event pairs, 6546 based on Foata normal form. 4/13387 useless extension candidates. Maximal degree in co-relation 30213. Up to 12974 conditions per place. [2024-06-28 03:09:55,835 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 53 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-28 03:09:55,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 321 flow [2024-06-28 03:09:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:09:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:09:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 03:09:55,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5865384615384616 [2024-06-28 03:09:55,837 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 4 states and 122 transitions. [2024-06-28 03:09:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 321 flow [2024-06-28 03:09:55,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 70 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:09:55,839 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 179 flow [2024-06-28 03:09:55,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 03:09:55,840 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-06-28 03:09:55,840 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 179 flow [2024-06-28 03:09:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:55,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:55,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:55,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:09:55,841 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)] === [2024-06-28 03:09:55,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1127976860, now seen corresponding path program 1 times [2024-06-28 03:09:55,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:55,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846545400] [2024-06-28 03:09:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:55,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:56,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846545400] [2024-06-28 03:09:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846545400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:56,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:56,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:09:56,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029703622] [2024-06-28 03:09:56,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:56,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:09:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:56,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:09:56,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:09:56,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:09:56,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:56,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:56,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:09:56,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:57,754 INFO L124 PetriNetUnfolderBase]: 9591/13433 cut-off events. [2024-06-28 03:09:57,755 INFO L125 PetriNetUnfolderBase]: For 7218/7218 co-relation queries the response was YES. [2024-06-28 03:09:57,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33742 conditions, 13433 events. 9591/13433 cut-off events. For 7218/7218 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 74020 event pairs, 5218 based on Foata normal form. 7/13434 useless extension candidates. Maximal degree in co-relation 33728. Up to 12895 conditions per place. [2024-06-28 03:09:57,823 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 71 selfloop transitions, 21 changer transitions 0/100 dead transitions. [2024-06-28 03:09:57,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 537 flow [2024-06-28 03:09:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:09:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:09:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-28 03:09:57,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-06-28 03:09:57,825 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 179 flow. Second operand 5 states and 160 transitions. [2024-06-28 03:09:57,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 537 flow [2024-06-28 03:09:57,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 518 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:09:57,829 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 310 flow [2024-06-28 03:09:57,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-28 03:09:57,830 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-06-28 03:09:57,830 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 310 flow [2024-06-28 03:09:57,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:09:57,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:57,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:09:57,831 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)] === [2024-06-28 03:09:57,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1782065219, now seen corresponding path program 1 times [2024-06-28 03:09:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:57,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696450829] [2024-06-28 03:09:57,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:57,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:09:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:09:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:09:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696450829] [2024-06-28 03:09:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696450829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:09:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:09:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:09:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829214739] [2024-06-28 03:09:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:09:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:09:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:09:58,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:09:58,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:09:58,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-06-28 03:09:58,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-28 03:09:58,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:09:58,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-06-28 03:09:58,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:09:59,780 INFO L124 PetriNetUnfolderBase]: 9620/13472 cut-off events. [2024-06-28 03:09:59,780 INFO L125 PetriNetUnfolderBase]: For 17177/17183 co-relation queries the response was YES. [2024-06-28 03:09:59,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39364 conditions, 13472 events. 9620/13472 cut-off events. For 17177/17183 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 74341 event pairs, 4299 based on Foata normal form. 18/13484 useless extension candidates. Maximal degree in co-relation 39347. Up to 12860 conditions per place. [2024-06-28 03:09:59,841 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 78 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-28 03:09:59,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 111 transitions, 682 flow [2024-06-28 03:09:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:09:59,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:09:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-28 03:09:59,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592948717948718 [2024-06-28 03:09:59,844 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 310 flow. Second operand 6 states and 185 transitions. [2024-06-28 03:09:59,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 111 transitions, 682 flow [2024-06-28 03:09:59,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 670 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:09:59,849 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 387 flow [2024-06-28 03:09:59,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=387, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-28 03:09:59,850 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 03:09:59,850 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 387 flow [2024-06-28 03:09:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 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) [2024-06-28 03:09:59,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:09:59,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:09:59,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:09:59,851 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)] === [2024-06-28 03:09:59,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:09:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1482374873, now seen corresponding path program 1 times [2024-06-28 03:09:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:09:59,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517955055] [2024-06-28 03:09:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:09:59,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:09:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517955055] [2024-06-28 03:10:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517955055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:00,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:00,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:10:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542670622] [2024-06-28 03:10:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:10:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:10:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:10:00,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:00,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:00,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:00,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:00,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:01,530 INFO L124 PetriNetUnfolderBase]: 8216/11812 cut-off events. [2024-06-28 03:10:01,530 INFO L125 PetriNetUnfolderBase]: For 21841/21841 co-relation queries the response was YES. [2024-06-28 03:10:01,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37374 conditions, 11812 events. 8216/11812 cut-off events. For 21841/21841 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67358 event pairs, 4302 based on Foata normal form. 3/11643 useless extension candidates. Maximal degree in co-relation 37353. Up to 11191 conditions per place. [2024-06-28 03:10:01,597 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 66 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-06-28 03:10:01,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 583 flow [2024-06-28 03:10:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:10:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:10:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-28 03:10:01,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846153846153846 [2024-06-28 03:10:01,599 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 387 flow. Second operand 5 states and 126 transitions. [2024-06-28 03:10:01,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 583 flow [2024-06-28 03:10:01,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 514 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:01,606 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 349 flow [2024-06-28 03:10:01,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=318, 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=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=349, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-28 03:10:01,607 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2024-06-28 03:10:01,607 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 349 flow [2024-06-28 03:10:01,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:01,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:01,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:01,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:10:01,608 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)] === [2024-06-28 03:10:01,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1315032729, now seen corresponding path program 1 times [2024-06-28 03:10:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580832491] [2024-06-28 03:10:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:02,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:02,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580832491] [2024-06-28 03:10:02,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580832491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:02,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:02,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450267459] [2024-06-28 03:10:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:02,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:02,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:02,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:02,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:02,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:02,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:02,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:02,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:03,794 INFO L124 PetriNetUnfolderBase]: 8198/11876 cut-off events. [2024-06-28 03:10:03,794 INFO L125 PetriNetUnfolderBase]: For 25269/25269 co-relation queries the response was YES. [2024-06-28 03:10:03,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37924 conditions, 11876 events. 8198/11876 cut-off events. For 25269/25269 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 68279 event pairs, 4090 based on Foata normal form. 6/11700 useless extension candidates. Maximal degree in co-relation 37901. Up to 11137 conditions per place. [2024-06-28 03:10:03,892 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 74 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-28 03:10:03,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 617 flow [2024-06-28 03:10:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 03:10:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483974358974359 [2024-06-28 03:10:03,898 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 349 flow. Second operand 6 states and 151 transitions. [2024-06-28 03:10:03,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 617 flow [2024-06-28 03:10:03,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 588 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:03,911 INFO L231 Difference]: Finished difference. Result has 70 places, 71 transitions, 395 flow [2024-06-28 03:10:03,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=395, PETRI_PLACES=70, PETRI_TRANSITIONS=71} [2024-06-28 03:10:03,913 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2024-06-28 03:10:03,914 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 71 transitions, 395 flow [2024-06-28 03:10:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:03,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:03,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:10:03,915 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)] === [2024-06-28 03:10:03,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2117028906, now seen corresponding path program 1 times [2024-06-28 03:10:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940910234] [2024-06-28 03:10:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:04,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:04,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940910234] [2024-06-28 03:10:04,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940910234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:04,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:04,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:04,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142180091] [2024-06-28 03:10:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:04,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:04,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:04,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 71 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 03:10:04,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:04,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:04,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:06,024 INFO L124 PetriNetUnfolderBase]: 9606/13495 cut-off events. [2024-06-28 03:10:06,024 INFO L125 PetriNetUnfolderBase]: For 40327/40339 co-relation queries the response was YES. [2024-06-28 03:10:06,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46780 conditions, 13495 events. 9606/13495 cut-off events. For 40327/40339 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 74567 event pairs, 4983 based on Foata normal form. 14/13503 useless extension candidates. Maximal degree in co-relation 46757. Up to 12914 conditions per place. [2024-06-28 03:10:06,098 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 73 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-28 03:10:06,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 105 transitions, 734 flow [2024-06-28 03:10:06,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 03:10:06,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967948717948718 [2024-06-28 03:10:06,100 INFO L175 Difference]: Start difference. First operand has 70 places, 71 transitions, 395 flow. Second operand 6 states and 155 transitions. [2024-06-28 03:10:06,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 105 transitions, 734 flow [2024-06-28 03:10:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 105 transitions, 691 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:06,112 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 448 flow [2024-06-28 03:10:06,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2024-06-28 03:10:06,112 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 17 predicate places. [2024-06-28 03:10:06,113 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 448 flow [2024-06-28 03:10:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 03:10:06,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:06,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:06,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:10:06,113 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)] === [2024-06-28 03:10:06,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1366837896, now seen corresponding path program 2 times [2024-06-28 03:10:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216757511] [2024-06-28 03:10:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:06,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:06,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216757511] [2024-06-28 03:10:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216757511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103552739] [2024-06-28 03:10:06,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:06,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:06,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:06,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 448 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 03:10:06,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:06,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:06,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:08,132 INFO L124 PetriNetUnfolderBase]: 9582/13447 cut-off events. [2024-06-28 03:10:08,132 INFO L125 PetriNetUnfolderBase]: For 47036/47042 co-relation queries the response was YES. [2024-06-28 03:10:08,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47722 conditions, 13447 events. 9582/13447 cut-off events. For 47036/47042 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 74196 event pairs, 5003 based on Foata normal form. 4/13438 useless extension candidates. Maximal degree in co-relation 47698. Up to 12884 conditions per place. [2024-06-28 03:10:08,203 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 66 selfloop transitions, 26 changer transitions 0/99 dead transitions. [2024-06-28 03:10:08,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 99 transitions, 694 flow [2024-06-28 03:10:08,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 03:10:08,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 03:10:08,207 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 448 flow. Second operand 6 states and 150 transitions. [2024-06-28 03:10:08,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 99 transitions, 694 flow [2024-06-28 03:10:08,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 99 transitions, 651 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:08,222 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 468 flow [2024-06-28 03:10:08,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=468, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-06-28 03:10:08,223 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2024-06-28 03:10:08,223 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 468 flow [2024-06-28 03:10:08,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2024-06-28 03:10:08,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:08,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:08,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:10:08,224 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)] === [2024-06-28 03:10:08,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash -808446168, now seen corresponding path program 1 times [2024-06-28 03:10:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172829413] [2024-06-28 03:10:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:08,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172829413] [2024-06-28 03:10:08,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172829413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:08,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:08,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:08,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025875736] [2024-06-28 03:10:08,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:08,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:08,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:09,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:09,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 468 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:09,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:09,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:10,510 INFO L124 PetriNetUnfolderBase]: 9948/13917 cut-off events. [2024-06-28 03:10:10,510 INFO L125 PetriNetUnfolderBase]: For 57919/57928 co-relation queries the response was YES. [2024-06-28 03:10:10,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51082 conditions, 13917 events. 9948/13917 cut-off events. For 57919/57928 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 76278 event pairs, 4406 based on Foata normal form. 15/13924 useless extension candidates. Maximal degree in co-relation 51057. Up to 12950 conditions per place. [2024-06-28 03:10:10,578 INFO L140 encePairwiseOnDemand]: 36/52 looper letters, 103 selfloop transitions, 55 changer transitions 0/165 dead transitions. [2024-06-28 03:10:10,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 165 transitions, 1344 flow [2024-06-28 03:10:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 03:10:10,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168269230769231 [2024-06-28 03:10:10,579 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 468 flow. Second operand 8 states and 215 transitions. [2024-06-28 03:10:10,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 165 transitions, 1344 flow [2024-06-28 03:10:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 165 transitions, 1181 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:10,617 INFO L231 Difference]: Finished difference. Result has 80 places, 108 transitions, 789 flow [2024-06-28 03:10:10,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=789, PETRI_PLACES=80, PETRI_TRANSITIONS=108} [2024-06-28 03:10:10,617 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2024-06-28 03:10:10,618 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 108 transitions, 789 flow [2024-06-28 03:10:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:10,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:10,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:10,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:10:10,618 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)] === [2024-06-28 03:10:10,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1203384792, now seen corresponding path program 2 times [2024-06-28 03:10:10,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:10,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607729157] [2024-06-28 03:10:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:10,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:11,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607729157] [2024-06-28 03:10:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607729157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:11,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137533696] [2024-06-28 03:10:11,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:11,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:11,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:11,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:11,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 108 transitions, 789 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:11,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:11,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:11,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:13,105 INFO L124 PetriNetUnfolderBase]: 10108/14131 cut-off events. [2024-06-28 03:10:13,105 INFO L125 PetriNetUnfolderBase]: For 76363/76375 co-relation queries the response was YES. [2024-06-28 03:10:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56896 conditions, 14131 events. 10108/14131 cut-off events. For 76363/76375 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77247 event pairs, 4444 based on Foata normal form. 26/14149 useless extension candidates. Maximal degree in co-relation 56867. Up to 13062 conditions per place. [2024-06-28 03:10:13,183 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 89 selfloop transitions, 65 changer transitions 0/161 dead transitions. [2024-06-28 03:10:13,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 161 transitions, 1395 flow [2024-06-28 03:10:13,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:13,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 03:10:13,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-28 03:10:13,185 INFO L175 Difference]: Start difference. First operand has 80 places, 108 transitions, 789 flow. Second operand 7 states and 184 transitions. [2024-06-28 03:10:13,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 161 transitions, 1395 flow [2024-06-28 03:10:13,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 161 transitions, 1354 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:13,220 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 998 flow [2024-06-28 03:10:13,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2024-06-28 03:10:13,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 30 predicate places. [2024-06-28 03:10:13,221 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 998 flow [2024-06-28 03:10:13,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:13,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:13,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:10:13,222 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)] === [2024-06-28 03:10:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 577700038, now seen corresponding path program 3 times [2024-06-28 03:10:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:13,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849580243] [2024-06-28 03:10:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:13,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849580243] [2024-06-28 03:10:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849580243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:13,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:13,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:13,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338818992] [2024-06-28 03:10:13,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:13,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:13,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:14,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:14,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 998 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:14,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:14,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:14,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:15,617 INFO L124 PetriNetUnfolderBase]: 10188/14253 cut-off events. [2024-06-28 03:10:15,618 INFO L125 PetriNetUnfolderBase]: For 90123/90133 co-relation queries the response was YES. [2024-06-28 03:10:15,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60002 conditions, 14253 events. 10188/14253 cut-off events. For 90123/90133 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77974 event pairs, 4442 based on Foata normal form. 13/14236 useless extension candidates. Maximal degree in co-relation 59971. Up to 13104 conditions per place. [2024-06-28 03:10:15,905 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 90 selfloop transitions, 79 changer transitions 0/176 dead transitions. [2024-06-28 03:10:15,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 176 transitions, 1794 flow [2024-06-28 03:10:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:15,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 03:10:15,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510989010989011 [2024-06-28 03:10:15,907 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 998 flow. Second operand 7 states and 186 transitions. [2024-06-28 03:10:15,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 176 transitions, 1794 flow [2024-06-28 03:10:16,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 176 transitions, 1625 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:16,010 INFO L231 Difference]: Finished difference. Result has 88 places, 131 transitions, 1207 flow [2024-06-28 03:10:16,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1207, PETRI_PLACES=88, PETRI_TRANSITIONS=131} [2024-06-28 03:10:16,011 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-28 03:10:16,011 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 131 transitions, 1207 flow [2024-06-28 03:10:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:16,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:16,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:16,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:10:16,012 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)] === [2024-06-28 03:10:16,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1026016122, now seen corresponding path program 4 times [2024-06-28 03:10:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:16,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628012132] [2024-06-28 03:10:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:16,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:16,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:16,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628012132] [2024-06-28 03:10:16,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628012132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:16,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:16,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:16,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176536009] [2024-06-28 03:10:16,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:16,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:16,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:16,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:16,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 131 transitions, 1207 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:16,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:16,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:18,751 INFO L124 PetriNetUnfolderBase]: 10156/14199 cut-off events. [2024-06-28 03:10:18,752 INFO L125 PetriNetUnfolderBase]: For 90547/90563 co-relation queries the response was YES. [2024-06-28 03:10:18,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59455 conditions, 14199 events. 10156/14199 cut-off events. For 90547/90563 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 77650 event pairs, 4424 based on Foata normal form. 19/14189 useless extension candidates. Maximal degree in co-relation 59423. Up to 13087 conditions per place. [2024-06-28 03:10:18,864 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 85 selfloop transitions, 81 changer transitions 0/173 dead transitions. [2024-06-28 03:10:18,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 173 transitions, 1741 flow [2024-06-28 03:10:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 03:10:18,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:10:18,866 INFO L175 Difference]: Start difference. First operand has 88 places, 131 transitions, 1207 flow. Second operand 7 states and 182 transitions. [2024-06-28 03:10:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 173 transitions, 1741 flow [2024-06-28 03:10:18,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 173 transitions, 1610 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 03:10:18,951 INFO L231 Difference]: Finished difference. Result has 93 places, 131 transitions, 1252 flow [2024-06-28 03:10:18,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1252, PETRI_PLACES=93, PETRI_TRANSITIONS=131} [2024-06-28 03:10:18,952 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-28 03:10:18,952 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 131 transitions, 1252 flow [2024-06-28 03:10:18,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:18,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:18,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:18,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:10:18,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:18,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:18,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1026007194, now seen corresponding path program 1 times [2024-06-28 03:10:18,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:18,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573508053] [2024-06-28 03:10:18,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:18,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:20,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573508053] [2024-06-28 03:10:20,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573508053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:20,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:20,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:10:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845246964] [2024-06-28 03:10:20,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:20,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:10:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:10:20,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:10:20,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:20,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 131 transitions, 1252 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:20,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:20,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:20,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:21,707 INFO L124 PetriNetUnfolderBase]: 8746/12483 cut-off events. [2024-06-28 03:10:21,707 INFO L125 PetriNetUnfolderBase]: For 85064/85066 co-relation queries the response was YES. [2024-06-28 03:10:21,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53078 conditions, 12483 events. 8746/12483 cut-off events. For 85064/85066 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 70383 event pairs, 3827 based on Foata normal form. 6/12351 useless extension candidates. Maximal degree in co-relation 53043. Up to 11846 conditions per place. [2024-06-28 03:10:21,805 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 142 selfloop transitions, 17 changer transitions 0/167 dead transitions. [2024-06-28 03:10:21,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1708 flow [2024-06-28 03:10:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:21,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:10:21,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 03:10:21,807 INFO L175 Difference]: Start difference. First operand has 93 places, 131 transitions, 1252 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:10:21,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1708 flow [2024-06-28 03:10:21,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 1501 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:21,881 INFO L231 Difference]: Finished difference. Result has 93 places, 134 transitions, 1131 flow [2024-06-28 03:10:21,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1131, PETRI_PLACES=93, PETRI_TRANSITIONS=134} [2024-06-28 03:10:21,882 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-28 03:10:21,882 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 134 transitions, 1131 flow [2024-06-28 03:10:21,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:21,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:21,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:21,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:10:21,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:21,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:21,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2001970125, now seen corresponding path program 1 times [2024-06-28 03:10:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974896922] [2024-06-28 03:10:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:22,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:22,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974896922] [2024-06-28 03:10:22,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974896922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:22,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:22,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:10:22,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442083929] [2024-06-28 03:10:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:10:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:10:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:10:22,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:22,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 134 transitions, 1131 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:22,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:22,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:22,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:23,708 INFO L124 PetriNetUnfolderBase]: 8739/12993 cut-off events. [2024-06-28 03:10:23,709 INFO L125 PetriNetUnfolderBase]: For 94858/94860 co-relation queries the response was YES. [2024-06-28 03:10:23,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54879 conditions, 12993 events. 8739/12993 cut-off events. For 94858/94860 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 77366 event pairs, 3988 based on Foata normal form. 2/12974 useless extension candidates. Maximal degree in co-relation 54844. Up to 11903 conditions per place. [2024-06-28 03:10:23,801 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 134 selfloop transitions, 10 changer transitions 0/152 dead transitions. [2024-06-28 03:10:23,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 152 transitions, 1501 flow [2024-06-28 03:10:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:10:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:10:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 03:10:23,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46923076923076923 [2024-06-28 03:10:23,803 INFO L175 Difference]: Start difference. First operand has 93 places, 134 transitions, 1131 flow. Second operand 5 states and 122 transitions. [2024-06-28 03:10:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 152 transitions, 1501 flow [2024-06-28 03:10:23,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 152 transitions, 1441 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:10:23,894 INFO L231 Difference]: Finished difference. Result has 93 places, 138 transitions, 1146 flow [2024-06-28 03:10:23,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1146, PETRI_PLACES=93, PETRI_TRANSITIONS=138} [2024-06-28 03:10:23,895 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-28 03:10:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 138 transitions, 1146 flow [2024-06-28 03:10:23,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:23,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:23,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:10:23,896 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)] === [2024-06-28 03:10:23,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash 6607900, now seen corresponding path program 1 times [2024-06-28 03:10:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109869946] [2024-06-28 03:10:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109869946] [2024-06-28 03:10:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109869946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:24,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497610454] [2024-06-28 03:10:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:24,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:24,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:24,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:24,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:24,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:24,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 138 transitions, 1146 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:24,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:24,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:24,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:26,290 INFO L124 PetriNetUnfolderBase]: 10222/14565 cut-off events. [2024-06-28 03:10:26,290 INFO L125 PetriNetUnfolderBase]: For 130598/130621 co-relation queries the response was YES. [2024-06-28 03:10:26,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65715 conditions, 14565 events. 10222/14565 cut-off events. For 130598/130621 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 81565 event pairs, 4407 based on Foata normal form. 30/14587 useless extension candidates. Maximal degree in co-relation 65679. Up to 13133 conditions per place. [2024-06-28 03:10:26,412 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 100 selfloop transitions, 86 changer transitions 0/193 dead transitions. [2024-06-28 03:10:26,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 193 transitions, 1860 flow [2024-06-28 03:10:26,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:26,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:26,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:10:26,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-06-28 03:10:26,414 INFO L175 Difference]: Start difference. First operand has 93 places, 138 transitions, 1146 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:10:26,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 193 transitions, 1860 flow [2024-06-28 03:10:26,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 193 transitions, 1815 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:26,516 INFO L231 Difference]: Finished difference. Result has 97 places, 146 transitions, 1400 flow [2024-06-28 03:10:26,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1400, PETRI_PLACES=97, PETRI_TRANSITIONS=146} [2024-06-28 03:10:26,517 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 42 predicate places. [2024-06-28 03:10:26,517 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 146 transitions, 1400 flow [2024-06-28 03:10:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:26,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:26,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:26,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:10:26,517 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)] === [2024-06-28 03:10:26,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1349778780, now seen corresponding path program 2 times [2024-06-28 03:10:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191644793] [2024-06-28 03:10:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191644793] [2024-06-28 03:10:27,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191644793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:27,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:27,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:27,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416504870] [2024-06-28 03:10:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:27,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:27,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:27,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:27,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:27,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 146 transitions, 1400 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:27,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:27,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:27,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:29,031 INFO L124 PetriNetUnfolderBase]: 10298/14671 cut-off events. [2024-06-28 03:10:29,031 INFO L125 PetriNetUnfolderBase]: For 147603/147628 co-relation queries the response was YES. [2024-06-28 03:10:29,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68250 conditions, 14671 events. 10298/14671 cut-off events. For 147603/147628 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 82283 event pairs, 4379 based on Foata normal form. 30/14693 useless extension candidates. Maximal degree in co-relation 68213. Up to 13200 conditions per place. [2024-06-28 03:10:29,131 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 101 selfloop transitions, 90 changer transitions 0/198 dead transitions. [2024-06-28 03:10:29,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 198 transitions, 2134 flow [2024-06-28 03:10:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 03:10:29,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2024-06-28 03:10:29,133 INFO L175 Difference]: Start difference. First operand has 97 places, 146 transitions, 1400 flow. Second operand 7 states and 184 transitions. [2024-06-28 03:10:29,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 198 transitions, 2134 flow [2024-06-28 03:10:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 198 transitions, 1830 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:29,220 INFO L231 Difference]: Finished difference. Result has 98 places, 154 transitions, 1421 flow [2024-06-28 03:10:29,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1421, PETRI_PLACES=98, PETRI_TRANSITIONS=154} [2024-06-28 03:10:29,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-28 03:10:29,221 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 154 transitions, 1421 flow [2024-06-28 03:10:29,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:29,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:29,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:10:29,223 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)] === [2024-06-28 03:10:29,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash 736185312, now seen corresponding path program 3 times [2024-06-28 03:10:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:29,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081882484] [2024-06-28 03:10:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:29,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:29,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081882484] [2024-06-28 03:10:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081882484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:29,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:29,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:29,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424931529] [2024-06-28 03:10:29,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:29,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:29,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:29,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:29,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 154 transitions, 1421 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:29,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:29,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:29,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:31,621 INFO L124 PetriNetUnfolderBase]: 10266/14633 cut-off events. [2024-06-28 03:10:31,621 INFO L125 PetriNetUnfolderBase]: For 158481/158535 co-relation queries the response was YES. [2024-06-28 03:10:31,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68660 conditions, 14633 events. 10266/14633 cut-off events. For 158481/158535 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 82057 event pairs, 4403 based on Foata normal form. 43/14645 useless extension candidates. Maximal degree in co-relation 68623. Up to 13173 conditions per place. [2024-06-28 03:10:31,744 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 98 selfloop transitions, 87 changer transitions 0/192 dead transitions. [2024-06-28 03:10:31,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 192 transitions, 1923 flow [2024-06-28 03:10:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:31,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:31,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:10:31,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-28 03:10:31,746 INFO L175 Difference]: Start difference. First operand has 98 places, 154 transitions, 1421 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:10:31,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 192 transitions, 1923 flow [2024-06-28 03:10:31,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 192 transitions, 1714 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:31,873 INFO L231 Difference]: Finished difference. Result has 101 places, 154 transitions, 1401 flow [2024-06-28 03:10:31,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1401, PETRI_PLACES=101, PETRI_TRANSITIONS=154} [2024-06-28 03:10:31,874 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-28 03:10:31,874 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 154 transitions, 1401 flow [2024-06-28 03:10:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:31,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:31,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:31,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:10:31,875 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)] === [2024-06-28 03:10:31,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1659790071, now seen corresponding path program 1 times [2024-06-28 03:10:31,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:31,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826679713] [2024-06-28 03:10:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:31,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826679713] [2024-06-28 03:10:32,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826679713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:32,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080800989] [2024-06-28 03:10:32,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:32,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:32,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:32,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:32,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:32,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:32,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 154 transitions, 1401 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:32,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:32,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:32,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:34,273 INFO L124 PetriNetUnfolderBase]: 10302/14655 cut-off events. [2024-06-28 03:10:34,273 INFO L125 PetriNetUnfolderBase]: For 173916/173936 co-relation queries the response was YES. [2024-06-28 03:10:34,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69719 conditions, 14655 events. 10302/14655 cut-off events. For 173916/173936 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 82036 event pairs, 3806 based on Foata normal form. 22/14671 useless extension candidates. Maximal degree in co-relation 69681. Up to 13587 conditions per place. [2024-06-28 03:10:34,389 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 147 selfloop transitions, 46 changer transitions 0/200 dead transitions. [2024-06-28 03:10:34,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 200 transitions, 2087 flow [2024-06-28 03:10:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 03:10:34,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489010989010989 [2024-06-28 03:10:34,391 INFO L175 Difference]: Start difference. First operand has 101 places, 154 transitions, 1401 flow. Second operand 7 states and 178 transitions. [2024-06-28 03:10:34,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 200 transitions, 2087 flow [2024-06-28 03:10:34,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 200 transitions, 1833 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 03:10:34,530 INFO L231 Difference]: Finished difference. Result has 101 places, 160 transitions, 1335 flow [2024-06-28 03:10:34,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1335, PETRI_PLACES=101, PETRI_TRANSITIONS=160} [2024-06-28 03:10:34,532 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 46 predicate places. [2024-06-28 03:10:34,532 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 160 transitions, 1335 flow [2024-06-28 03:10:34,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:34,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:34,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:34,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:10:34,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:34,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1224794515, now seen corresponding path program 2 times [2024-06-28 03:10:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399959680] [2024-06-28 03:10:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:35,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399959680] [2024-06-28 03:10:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399959680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:35,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:10:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830302304] [2024-06-28 03:10:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:10:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:35,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:10:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:10:35,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:35,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 160 transitions, 1335 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:35,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:35,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:35,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:37,107 INFO L124 PetriNetUnfolderBase]: 10287/14633 cut-off events. [2024-06-28 03:10:37,107 INFO L125 PetriNetUnfolderBase]: For 193582/193594 co-relation queries the response was YES. [2024-06-28 03:10:37,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71399 conditions, 14633 events. 10287/14633 cut-off events. For 193582/193594 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 81895 event pairs, 4473 based on Foata normal form. 14/14641 useless extension candidates. Maximal degree in co-relation 71360. Up to 13702 conditions per place. [2024-06-28 03:10:37,237 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 146 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-28 03:10:37,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 198 transitions, 1847 flow [2024-06-28 03:10:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:10:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:10:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:10:37,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 03:10:37,239 INFO L175 Difference]: Start difference. First operand has 101 places, 160 transitions, 1335 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:10:37,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 198 transitions, 1847 flow [2024-06-28 03:10:37,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 198 transitions, 1746 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 03:10:37,353 INFO L231 Difference]: Finished difference. Result has 105 places, 160 transitions, 1336 flow [2024-06-28 03:10:37,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1336, PETRI_PLACES=105, PETRI_TRANSITIONS=160} [2024-06-28 03:10:37,354 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2024-06-28 03:10:37,354 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 160 transitions, 1336 flow [2024-06-28 03:10:37,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:37,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:37,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:37,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:10:37,354 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)] === [2024-06-28 03:10:37,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1106522137, now seen corresponding path program 1 times [2024-06-28 03:10:37,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:37,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380310075] [2024-06-28 03:10:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:37,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:38,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:38,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380310075] [2024-06-28 03:10:38,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380310075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:38,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:38,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309354141] [2024-06-28 03:10:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:38,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:38,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:38,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:38,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:38,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 160 transitions, 1336 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:38,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:38,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:38,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:40,415 INFO L124 PetriNetUnfolderBase]: 10487/14871 cut-off events. [2024-06-28 03:10:40,415 INFO L125 PetriNetUnfolderBase]: For 220742/220757 co-relation queries the response was YES. [2024-06-28 03:10:40,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73967 conditions, 14871 events. 10487/14871 cut-off events. For 220742/220757 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 83037 event pairs, 4088 based on Foata normal form. 44/14903 useless extension candidates. Maximal degree in co-relation 73926. Up to 13216 conditions per place. [2024-06-28 03:10:40,557 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 112 selfloop transitions, 96 changer transitions 0/215 dead transitions. [2024-06-28 03:10:40,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 215 transitions, 1972 flow [2024-06-28 03:10:40,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:40,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 03:10:40,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:10:40,560 INFO L175 Difference]: Start difference. First operand has 105 places, 160 transitions, 1336 flow. Second operand 8 states and 208 transitions. [2024-06-28 03:10:40,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 215 transitions, 1972 flow [2024-06-28 03:10:40,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 215 transitions, 1870 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:40,937 INFO L231 Difference]: Finished difference. Result has 107 places, 163 transitions, 1493 flow [2024-06-28 03:10:40,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=107, PETRI_TRANSITIONS=163} [2024-06-28 03:10:40,937 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-28 03:10:40,937 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 163 transitions, 1493 flow [2024-06-28 03:10:40,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:40,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:40,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:40,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:10:40,938 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:40,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1454794270, now seen corresponding path program 1 times [2024-06-28 03:10:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:40,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301494068] [2024-06-28 03:10:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:40,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:41,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301494068] [2024-06-28 03:10:41,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301494068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:41,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:41,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:41,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199587935] [2024-06-28 03:10:41,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:41,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:41,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:41,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:41,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:41,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 163 transitions, 1493 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:41,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:41,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:41,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:43,112 INFO L124 PetriNetUnfolderBase]: 10503/14912 cut-off events. [2024-06-28 03:10:43,112 INFO L125 PetriNetUnfolderBase]: For 241519/241527 co-relation queries the response was YES. [2024-06-28 03:10:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77320 conditions, 14912 events. 10503/14912 cut-off events. For 241519/241527 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 83483 event pairs, 4466 based on Foata normal form. 10/14918 useless extension candidates. Maximal degree in co-relation 77278. Up to 14242 conditions per place. [2024-06-28 03:10:43,251 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 169 selfloop transitions, 17 changer transitions 0/193 dead transitions. [2024-06-28 03:10:43,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 193 transitions, 2003 flow [2024-06-28 03:10:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:43,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 03:10:43,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 03:10:43,252 INFO L175 Difference]: Start difference. First operand has 107 places, 163 transitions, 1493 flow. Second operand 6 states and 144 transitions. [2024-06-28 03:10:43,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 193 transitions, 2003 flow [2024-06-28 03:10:43,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 193 transitions, 1792 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:43,468 INFO L231 Difference]: Finished difference. Result has 107 places, 167 transitions, 1382 flow [2024-06-28 03:10:43,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1382, PETRI_PLACES=107, PETRI_TRANSITIONS=167} [2024-06-28 03:10:43,469 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 52 predicate places. [2024-06-28 03:10:43,469 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 167 transitions, 1382 flow [2024-06-28 03:10:43,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:43,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:43,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:43,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:10:43,470 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)] === [2024-06-28 03:10:43,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash -499427493, now seen corresponding path program 2 times [2024-06-28 03:10:43,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:43,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825038574] [2024-06-28 03:10:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:43,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:44,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:44,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825038574] [2024-06-28 03:10:44,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825038574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:44,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650370979] [2024-06-28 03:10:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:44,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:44,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:44,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:44,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 167 transitions, 1382 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:44,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:44,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:44,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:46,645 INFO L124 PetriNetUnfolderBase]: 10539/14931 cut-off events. [2024-06-28 03:10:46,646 INFO L125 PetriNetUnfolderBase]: For 264408/264418 co-relation queries the response was YES. [2024-06-28 03:10:46,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79583 conditions, 14931 events. 10539/14931 cut-off events. For 264408/264418 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 83150 event pairs, 4118 based on Foata normal form. 9/14895 useless extension candidates. Maximal degree in co-relation 79540. Up to 13537 conditions per place. [2024-06-28 03:10:46,769 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 112 selfloop transitions, 98 changer transitions 0/217 dead transitions. [2024-06-28 03:10:46,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 217 transitions, 2016 flow [2024-06-28 03:10:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 03:10:46,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879807692307692 [2024-06-28 03:10:46,771 INFO L175 Difference]: Start difference. First operand has 107 places, 167 transitions, 1382 flow. Second operand 8 states and 203 transitions. [2024-06-28 03:10:46,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 217 transitions, 2016 flow [2024-06-28 03:10:46,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 217 transitions, 1948 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:46,985 INFO L231 Difference]: Finished difference. Result has 111 places, 170 transitions, 1583 flow [2024-06-28 03:10:46,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=111, PETRI_TRANSITIONS=170} [2024-06-28 03:10:46,986 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 03:10:46,986 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 170 transitions, 1583 flow [2024-06-28 03:10:46,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:46,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:46,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:46,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:10:46,987 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)] === [2024-06-28 03:10:46,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1849319399, now seen corresponding path program 3 times [2024-06-28 03:10:46,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:46,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947800416] [2024-06-28 03:10:46,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947800416] [2024-06-28 03:10:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947800416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:48,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891193156] [2024-06-28 03:10:48,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:48,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:48,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:48,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 170 transitions, 1583 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:48,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:48,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:48,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:50,101 INFO L124 PetriNetUnfolderBase]: 10575/14975 cut-off events. [2024-06-28 03:10:50,101 INFO L125 PetriNetUnfolderBase]: For 296521/296535 co-relation queries the response was YES. [2024-06-28 03:10:50,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83318 conditions, 14975 events. 10575/14975 cut-off events. For 296521/296535 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 83497 event pairs, 4102 based on Foata normal form. 13/14943 useless extension candidates. Maximal degree in co-relation 83274. Up to 13589 conditions per place. [2024-06-28 03:10:50,217 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 113 selfloop transitions, 100 changer transitions 0/220 dead transitions. [2024-06-28 03:10:50,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 220 transitions, 2231 flow [2024-06-28 03:10:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:50,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 03:10:50,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-06-28 03:10:50,218 INFO L175 Difference]: Start difference. First operand has 111 places, 170 transitions, 1583 flow. Second operand 8 states and 202 transitions. [2024-06-28 03:10:50,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 220 transitions, 2231 flow [2024-06-28 03:10:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 220 transitions, 1990 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:50,441 INFO L231 Difference]: Finished difference. Result has 113 places, 173 transitions, 1621 flow [2024-06-28 03:10:50,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1621, PETRI_PLACES=113, PETRI_TRANSITIONS=173} [2024-06-28 03:10:50,441 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-28 03:10:50,441 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 173 transitions, 1621 flow [2024-06-28 03:10:50,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:50,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:50,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:50,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:10:50,442 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:50,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1849616069, now seen corresponding path program 4 times [2024-06-28 03:10:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:50,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488560333] [2024-06-28 03:10:50,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:50,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:51,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488560333] [2024-06-28 03:10:51,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488560333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:51,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:51,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:10:51,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549403599] [2024-06-28 03:10:51,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:51,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:10:51,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:10:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:10:51,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:51,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 173 transitions, 1621 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:51,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:51,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:51,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:53,602 INFO L124 PetriNetUnfolderBase]: 10560/14954 cut-off events. [2024-06-28 03:10:53,603 INFO L125 PetriNetUnfolderBase]: For 325181/325195 co-relation queries the response was YES. [2024-06-28 03:10:53,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85502 conditions, 14954 events. 10560/14954 cut-off events. For 325181/325195 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 83068 event pairs, 3796 based on Foata normal form. 13/14922 useless extension candidates. Maximal degree in co-relation 85457. Up to 13180 conditions per place. [2024-06-28 03:10:53,721 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 108 selfloop transitions, 111 changer transitions 0/226 dead transitions. [2024-06-28 03:10:53,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 226 transitions, 2295 flow [2024-06-28 03:10:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:10:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:10:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 03:10:53,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951923076923077 [2024-06-28 03:10:53,722 INFO L175 Difference]: Start difference. First operand has 113 places, 173 transitions, 1621 flow. Second operand 8 states and 206 transitions. [2024-06-28 03:10:53,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 226 transitions, 2295 flow [2024-06-28 03:10:53,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 226 transitions, 2044 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:53,943 INFO L231 Difference]: Finished difference. Result has 115 places, 176 transitions, 1676 flow [2024-06-28 03:10:53,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1676, PETRI_PLACES=115, PETRI_TRANSITIONS=176} [2024-06-28 03:10:53,943 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-28 03:10:53,943 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 176 transitions, 1676 flow [2024-06-28 03:10:53,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:53,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:53,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:53,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:10:53,944 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:53,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash -252024340, now seen corresponding path program 2 times [2024-06-28 03:10:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752913603] [2024-06-28 03:10:53,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:53,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:54,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:54,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:54,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752913603] [2024-06-28 03:10:54,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752913603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:54,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:54,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:54,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068774642] [2024-06-28 03:10:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:54,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:10:54,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 176 transitions, 1676 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:54,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:54,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:10:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:56,195 INFO L124 PetriNetUnfolderBase]: 10553/15001 cut-off events. [2024-06-28 03:10:56,195 INFO L125 PetriNetUnfolderBase]: For 355217/355241 co-relation queries the response was YES. [2024-06-28 03:10:56,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87966 conditions, 15001 events. 10553/15001 cut-off events. For 355217/355241 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 83943 event pairs, 4457 based on Foata normal form. 18/15009 useless extension candidates. Maximal degree in co-relation 87920. Up to 14298 conditions per place. [2024-06-28 03:10:56,330 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 170 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2024-06-28 03:10:56,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 201 transitions, 2206 flow [2024-06-28 03:10:56,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:56,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 03:10:56,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 03:10:56,331 INFO L175 Difference]: Start difference. First operand has 115 places, 176 transitions, 1676 flow. Second operand 6 states and 140 transitions. [2024-06-28 03:10:56,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 201 transitions, 2206 flow [2024-06-28 03:10:56,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 201 transitions, 1926 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:10:56,638 INFO L231 Difference]: Finished difference. Result has 115 places, 180 transitions, 1529 flow [2024-06-28 03:10:56,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1529, PETRI_PLACES=115, PETRI_TRANSITIONS=180} [2024-06-28 03:10:56,638 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-28 03:10:56,639 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 180 transitions, 1529 flow [2024-06-28 03:10:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:56,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:56,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:56,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:10:56,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:56,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1840596094, now seen corresponding path program 1 times [2024-06-28 03:10:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:56,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514002814] [2024-06-28 03:10:56,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:56,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514002814] [2024-06-28 03:10:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514002814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:57,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661464199] [2024-06-28 03:10:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:57,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:57,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:57,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:57,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 180 transitions, 1529 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:57,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:57,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:57,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:10:58,749 INFO L124 PetriNetUnfolderBase]: 9174/13486 cut-off events. [2024-06-28 03:10:58,750 INFO L125 PetriNetUnfolderBase]: For 323392/323394 co-relation queries the response was YES. [2024-06-28 03:10:58,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79317 conditions, 13486 events. 9174/13486 cut-off events. For 323392/323394 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 79077 event pairs, 3774 based on Foata normal form. 2/13443 useless extension candidates. Maximal degree in co-relation 79270. Up to 12511 conditions per place. [2024-06-28 03:10:58,867 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 183 selfloop transitions, 14 changer transitions 0/205 dead transitions. [2024-06-28 03:10:58,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 205 transitions, 2049 flow [2024-06-28 03:10:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:10:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:10:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 03:10:58,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2024-06-28 03:10:58,869 INFO L175 Difference]: Start difference. First operand has 115 places, 180 transitions, 1529 flow. Second operand 6 states and 146 transitions. [2024-06-28 03:10:58,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 205 transitions, 2049 flow [2024-06-28 03:10:59,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 205 transitions, 1946 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:10:59,120 INFO L231 Difference]: Finished difference. Result has 117 places, 184 transitions, 1531 flow [2024-06-28 03:10:59,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1531, PETRI_PLACES=117, PETRI_TRANSITIONS=184} [2024-06-28 03:10:59,121 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 62 predicate places. [2024-06-28 03:10:59,121 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 184 transitions, 1531 flow [2024-06-28 03:10:59,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:59,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:10:59,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:10:59,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:10:59,121 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:10:59,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:10:59,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1443360478, now seen corresponding path program 2 times [2024-06-28 03:10:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:10:59,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315933953] [2024-06-28 03:10:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:10:59,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:10:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:10:59,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:10:59,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:10:59,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315933953] [2024-06-28 03:10:59,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315933953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:10:59,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:10:59,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:10:59,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240160513] [2024-06-28 03:10:59,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:10:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:10:59,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:10:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:10:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:10:59,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-06-28 03:10:59,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 184 transitions, 1531 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:10:59,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:10:59,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-06-28 03:10:59,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:01,288 INFO L124 PetriNetUnfolderBase]: 9167/13515 cut-off events. [2024-06-28 03:11:01,288 INFO L125 PetriNetUnfolderBase]: For 346484/346492 co-relation queries the response was YES. [2024-06-28 03:11:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81865 conditions, 13515 events. 9167/13515 cut-off events. For 346484/346492 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 79627 event pairs, 3775 based on Foata normal form. 6/13478 useless extension candidates. Maximal degree in co-relation 81817. Up to 12484 conditions per place. [2024-06-28 03:11:01,403 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 177 selfloop transitions, 21 changer transitions 0/206 dead transitions. [2024-06-28 03:11:01,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 206 transitions, 2051 flow [2024-06-28 03:11:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:11:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:11:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 03:11:01,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-28 03:11:01,405 INFO L175 Difference]: Start difference. First operand has 117 places, 184 transitions, 1531 flow. Second operand 6 states and 145 transitions. [2024-06-28 03:11:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 206 transitions, 2051 flow [2024-06-28 03:11:01,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 206 transitions, 1976 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:01,726 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 1583 flow [2024-06-28 03:11:01,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1456, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1583, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2024-06-28 03:11:01,727 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-28 03:11:01,727 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 1583 flow [2024-06-28 03:11:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:01,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:01,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:01,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:11:01,728 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:01,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1443352542, now seen corresponding path program 1 times [2024-06-28 03:11:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12164427] [2024-06-28 03:11:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:01,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:02,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:02,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12164427] [2024-06-28 03:11:02,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12164427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:02,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:02,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:02,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886552729] [2024-06-28 03:11:02,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:02,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:02,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:02,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:02,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:02,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:02,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 1583 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:02,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:02,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:04,561 INFO L124 PetriNetUnfolderBase]: 10882/15778 cut-off events. [2024-06-28 03:11:04,561 INFO L125 PetriNetUnfolderBase]: For 446768/446770 co-relation queries the response was YES. [2024-06-28 03:11:04,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98281 conditions, 15778 events. 10882/15778 cut-off events. For 446768/446770 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 91615 event pairs, 4596 based on Foata normal form. 2/15735 useless extension candidates. Maximal degree in co-relation 98232. Up to 14786 conditions per place. [2024-06-28 03:11:04,687 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 193 selfloop transitions, 18 changer transitions 0/218 dead transitions. [2024-06-28 03:11:04,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 2166 flow [2024-06-28 03:11:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:11:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:11:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 03:11:04,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340659340659341 [2024-06-28 03:11:04,688 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 1583 flow. Second operand 7 states and 158 transitions. [2024-06-28 03:11:04,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 2166 flow [2024-06-28 03:11:04,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 218 transitions, 2064 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:04,948 INFO L231 Difference]: Finished difference. Result has 123 places, 196 transitions, 1634 flow [2024-06-28 03:11:04,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1634, PETRI_PLACES=123, PETRI_TRANSITIONS=196} [2024-06-28 03:11:04,949 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 03:11:04,949 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 196 transitions, 1634 flow [2024-06-28 03:11:04,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:04,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:04,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:04,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:11:04,949 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:04,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1912941573, now seen corresponding path program 1 times [2024-06-28 03:11:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:04,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662896723] [2024-06-28 03:11:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:05,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:05,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662896723] [2024-06-28 03:11:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662896723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:05,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079345915] [2024-06-28 03:11:05,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:05,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:05,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:05,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 196 transitions, 1634 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:05,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:05,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:07,852 INFO L124 PetriNetUnfolderBase]: 12020/16929 cut-off events. [2024-06-28 03:11:07,852 INFO L125 PetriNetUnfolderBase]: For 561654/561665 co-relation queries the response was YES. [2024-06-28 03:11:07,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113149 conditions, 16929 events. 12020/16929 cut-off events. For 561654/561665 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 95345 event pairs, 3657 based on Foata normal form. 28/16921 useless extension candidates. Maximal degree in co-relation 113098. Up to 14445 conditions per place. [2024-06-28 03:11:08,046 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 146 selfloop transitions, 101 changer transitions 0/255 dead transitions. [2024-06-28 03:11:08,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 255 transitions, 2574 flow [2024-06-28 03:11:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 03:11:08,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096153846153846 [2024-06-28 03:11:08,048 INFO L175 Difference]: Start difference. First operand has 123 places, 196 transitions, 1634 flow. Second operand 8 states and 212 transitions. [2024-06-28 03:11:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 255 transitions, 2574 flow [2024-06-28 03:11:08,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 255 transitions, 2483 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:08,541 INFO L231 Difference]: Finished difference. Result has 127 places, 200 transitions, 1886 flow [2024-06-28 03:11:08,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1886, PETRI_PLACES=127, PETRI_TRANSITIONS=200} [2024-06-28 03:11:08,542 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 72 predicate places. [2024-06-28 03:11:08,542 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 200 transitions, 1886 flow [2024-06-28 03:11:08,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:08,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:08,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:08,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:11:08,543 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:08,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1605586947, now seen corresponding path program 2 times [2024-06-28 03:11:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:08,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973426006] [2024-06-28 03:11:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:08,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973426006] [2024-06-28 03:11:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973426006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:09,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:09,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:09,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285974051] [2024-06-28 03:11:09,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:09,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:09,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:09,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:09,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 200 transitions, 1886 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:09,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:09,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:09,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:11,799 INFO L124 PetriNetUnfolderBase]: 12164/17153 cut-off events. [2024-06-28 03:11:11,799 INFO L125 PetriNetUnfolderBase]: For 606996/607007 co-relation queries the response was YES. [2024-06-28 03:11:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117467 conditions, 17153 events. 12164/17153 cut-off events. For 606996/607007 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 96931 event pairs, 4612 based on Foata normal form. 28/17159 useless extension candidates. Maximal degree in co-relation 117415. Up to 15313 conditions per place. [2024-06-28 03:11:11,996 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 149 selfloop transitions, 99 changer transitions 0/256 dead transitions. [2024-06-28 03:11:11,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 256 transitions, 2624 flow [2024-06-28 03:11:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:11,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:11,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:11:11,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-06-28 03:11:11,998 INFO L175 Difference]: Start difference. First operand has 127 places, 200 transitions, 1886 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:11:11,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 256 transitions, 2624 flow [2024-06-28 03:11:12,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 256 transitions, 2481 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:12,500 INFO L231 Difference]: Finished difference. Result has 131 places, 202 transitions, 2022 flow [2024-06-28 03:11:12,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2022, PETRI_PLACES=131, PETRI_TRANSITIONS=202} [2024-06-28 03:11:12,501 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 76 predicate places. [2024-06-28 03:11:12,501 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 202 transitions, 2022 flow [2024-06-28 03:11:12,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:12,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:12,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:12,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:11:12,501 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:12,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:12,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2145720484, now seen corresponding path program 1 times [2024-06-28 03:11:12,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:12,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105344977] [2024-06-28 03:11:12,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:12,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105344977] [2024-06-28 03:11:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105344977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:13,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:13,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:13,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889540063] [2024-06-28 03:11:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:13,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:13,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:13,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 202 transitions, 2022 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:13,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:13,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:13,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:15,881 INFO L124 PetriNetUnfolderBase]: 12196/17207 cut-off events. [2024-06-28 03:11:15,881 INFO L125 PetriNetUnfolderBase]: For 636128/636156 co-relation queries the response was YES. [2024-06-28 03:11:15,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119387 conditions, 17207 events. 12196/17207 cut-off events. For 636128/636156 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 97494 event pairs, 4955 based on Foata normal form. 30/17231 useless extension candidates. Maximal degree in co-relation 119333. Up to 16349 conditions per place. [2024-06-28 03:11:16,046 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 189 selfloop transitions, 47 changer transitions 0/244 dead transitions. [2024-06-28 03:11:16,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 244 transitions, 2712 flow [2024-06-28 03:11:16,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:11:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:11:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:11:16,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807692307692308 [2024-06-28 03:11:16,047 INFO L175 Difference]: Start difference. First operand has 131 places, 202 transitions, 2022 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:11:16,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 244 transitions, 2712 flow [2024-06-28 03:11:16,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 244 transitions, 2465 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:16,565 INFO L231 Difference]: Finished difference. Result has 132 places, 207 transitions, 1978 flow [2024-06-28 03:11:16,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1978, PETRI_PLACES=132, PETRI_TRANSITIONS=207} [2024-06-28 03:11:16,565 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-28 03:11:16,565 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 207 transitions, 1978 flow [2024-06-28 03:11:16,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:16,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:16,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:16,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:11:16,566 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:16,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2055131133, now seen corresponding path program 3 times [2024-06-28 03:11:16,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:16,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356376298] [2024-06-28 03:11:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356376298] [2024-06-28 03:11:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356376298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:17,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:17,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:17,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102693811] [2024-06-28 03:11:17,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:17,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:17,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:17,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 207 transitions, 1978 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:17,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:17,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:17,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:20,305 INFO L124 PetriNetUnfolderBase]: 12455/17632 cut-off events. [2024-06-28 03:11:20,305 INFO L125 PetriNetUnfolderBase]: For 700761/700788 co-relation queries the response was YES. [2024-06-28 03:11:20,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125916 conditions, 17632 events. 12455/17632 cut-off events. For 700761/700788 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 100551 event pairs, 4009 based on Foata normal form. 46/17670 useless extension candidates. Maximal degree in co-relation 125861. Up to 15602 conditions per place. [2024-06-28 03:11:20,500 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 162 selfloop transitions, 101 changer transitions 0/271 dead transitions. [2024-06-28 03:11:20,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 271 transitions, 3008 flow [2024-06-28 03:11:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-28 03:11:20,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216346153846154 [2024-06-28 03:11:20,502 INFO L175 Difference]: Start difference. First operand has 132 places, 207 transitions, 1978 flow. Second operand 8 states and 217 transitions. [2024-06-28 03:11:20,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 271 transitions, 3008 flow [2024-06-28 03:11:20,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 271 transitions, 2843 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 03:11:20,976 INFO L231 Difference]: Finished difference. Result has 135 places, 211 transitions, 2172 flow [2024-06-28 03:11:20,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2172, PETRI_PLACES=135, PETRI_TRANSITIONS=211} [2024-06-28 03:11:20,977 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 03:11:20,977 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 211 transitions, 2172 flow [2024-06-28 03:11:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:20,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:20,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:20,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:11:20,978 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:20,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash 57338587, now seen corresponding path program 4 times [2024-06-28 03:11:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:20,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24523934] [2024-06-28 03:11:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:21,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:21,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24523934] [2024-06-28 03:11:21,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24523934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:21,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:21,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246910220] [2024-06-28 03:11:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:21,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:21,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:22,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 211 transitions, 2172 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:22,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:22,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:22,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:24,806 INFO L124 PetriNetUnfolderBase]: 12619/17852 cut-off events. [2024-06-28 03:11:24,806 INFO L125 PetriNetUnfolderBase]: For 751186/751209 co-relation queries the response was YES. [2024-06-28 03:11:24,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129502 conditions, 17852 events. 12619/17852 cut-off events. For 751186/751209 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 101746 event pairs, 4687 based on Foata normal form. 46/17890 useless extension candidates. Maximal degree in co-relation 129446. Up to 16246 conditions per place. [2024-06-28 03:11:24,985 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 166 selfloop transitions, 92 changer transitions 0/266 dead transitions. [2024-06-28 03:11:24,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 266 transitions, 2942 flow [2024-06-28 03:11:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 03:11:24,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49759615384615385 [2024-06-28 03:11:24,986 INFO L175 Difference]: Start difference. First operand has 135 places, 211 transitions, 2172 flow. Second operand 8 states and 207 transitions. [2024-06-28 03:11:24,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 266 transitions, 2942 flow [2024-06-28 03:11:25,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 266 transitions, 2779 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:11:25,699 INFO L231 Difference]: Finished difference. Result has 139 places, 213 transitions, 2285 flow [2024-06-28 03:11:25,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2009, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2285, PETRI_PLACES=139, PETRI_TRANSITIONS=213} [2024-06-28 03:11:25,699 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 84 predicate places. [2024-06-28 03:11:25,700 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 213 transitions, 2285 flow [2024-06-28 03:11:25,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:25,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:25,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:25,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:11:25,700 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:25,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:25,701 INFO L85 PathProgramCache]: Analyzing trace with hash 51976207, now seen corresponding path program 5 times [2024-06-28 03:11:25,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:25,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485401372] [2024-06-28 03:11:25,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:25,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:26,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:26,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485401372] [2024-06-28 03:11:26,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485401372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:26,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:26,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050403201] [2024-06-28 03:11:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:26,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:26,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 213 transitions, 2285 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:26,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:26,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:26,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:29,431 INFO L124 PetriNetUnfolderBase]: 12783/18120 cut-off events. [2024-06-28 03:11:29,431 INFO L125 PetriNetUnfolderBase]: For 793126/793153 co-relation queries the response was YES. [2024-06-28 03:11:29,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132738 conditions, 18120 events. 12783/18120 cut-off events. For 793126/793153 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 103778 event pairs, 4731 based on Foata normal form. 52/18164 useless extension candidates. Maximal degree in co-relation 132680. Up to 16490 conditions per place. [2024-06-28 03:11:29,626 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 167 selfloop transitions, 96 changer transitions 0/271 dead transitions. [2024-06-28 03:11:29,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 271 transitions, 3081 flow [2024-06-28 03:11:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-28 03:11:29,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072115384615384 [2024-06-28 03:11:29,628 INFO L175 Difference]: Start difference. First operand has 139 places, 213 transitions, 2285 flow. Second operand 8 states and 211 transitions. [2024-06-28 03:11:29,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 271 transitions, 3081 flow [2024-06-28 03:11:30,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 271 transitions, 2851 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:30,449 INFO L231 Difference]: Finished difference. Result has 141 places, 215 transitions, 2343 flow [2024-06-28 03:11:30,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2055, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2343, PETRI_PLACES=141, PETRI_TRANSITIONS=215} [2024-06-28 03:11:30,450 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2024-06-28 03:11:30,450 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 215 transitions, 2343 flow [2024-06-28 03:11:30,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:30,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:30,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:30,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:11:30,450 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:30,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:30,451 INFO L85 PathProgramCache]: Analyzing trace with hash 57553789, now seen corresponding path program 1 times [2024-06-28 03:11:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:30,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455312063] [2024-06-28 03:11:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455312063] [2024-06-28 03:11:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455312063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:31,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:31,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:31,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442050015] [2024-06-28 03:11:31,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:31,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:31,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:31,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:31,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:31,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:31,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 215 transitions, 2343 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:31,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:31,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:31,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:34,751 INFO L124 PetriNetUnfolderBase]: 12875/18224 cut-off events. [2024-06-28 03:11:34,752 INFO L125 PetriNetUnfolderBase]: For 826021/826044 co-relation queries the response was YES. [2024-06-28 03:11:34,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134369 conditions, 18224 events. 12875/18224 cut-off events. For 826021/826044 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 104404 event pairs, 4705 based on Foata normal form. 34/18236 useless extension candidates. Maximal degree in co-relation 134310. Up to 15958 conditions per place. [2024-06-28 03:11:34,927 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 163 selfloop transitions, 99 changer transitions 0/270 dead transitions. [2024-06-28 03:11:34,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 270 transitions, 3119 flow [2024-06-28 03:11:34,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 03:11:34,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:11:34,929 INFO L175 Difference]: Start difference. First operand has 141 places, 215 transitions, 2343 flow. Second operand 8 states and 208 transitions. [2024-06-28 03:11:34,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 270 transitions, 3119 flow [2024-06-28 03:11:35,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 270 transitions, 2877 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:35,595 INFO L231 Difference]: Finished difference. Result has 143 places, 217 transitions, 2389 flow [2024-06-28 03:11:35,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2389, PETRI_PLACES=143, PETRI_TRANSITIONS=217} [2024-06-28 03:11:35,596 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 88 predicate places. [2024-06-28 03:11:35,596 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 217 transitions, 2389 flow [2024-06-28 03:11:35,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:35,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:35,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:35,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:11:35,597 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:35,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:35,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2146019014, now seen corresponding path program 2 times [2024-06-28 03:11:35,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:35,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297366157] [2024-06-28 03:11:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:36,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:36,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297366157] [2024-06-28 03:11:36,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297366157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:36,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:36,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:11:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318517834] [2024-06-28 03:11:36,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:36,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:11:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:11:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:11:36,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:36,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 217 transitions, 2389 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:36,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:36,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:36,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:39,293 INFO L124 PetriNetUnfolderBase]: 13076/18545 cut-off events. [2024-06-28 03:11:39,294 INFO L125 PetriNetUnfolderBase]: For 857617/857637 co-relation queries the response was YES. [2024-06-28 03:11:39,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137577 conditions, 18545 events. 13076/18545 cut-off events. For 857617/857637 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 106979 event pairs, 5097 based on Foata normal form. 20/18559 useless extension candidates. Maximal degree in co-relation 137517. Up to 17542 conditions per place. [2024-06-28 03:11:39,472 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 197 selfloop transitions, 53 changer transitions 0/258 dead transitions. [2024-06-28 03:11:39,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 258 transitions, 3321 flow [2024-06-28 03:11:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:11:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:11:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 03:11:39,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725274725274725 [2024-06-28 03:11:39,473 INFO L175 Difference]: Start difference. First operand has 143 places, 217 transitions, 2389 flow. Second operand 7 states and 172 transitions. [2024-06-28 03:11:39,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 258 transitions, 3321 flow [2024-06-28 03:11:40,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 258 transitions, 3067 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 03:11:40,349 INFO L231 Difference]: Finished difference. Result has 145 places, 227 transitions, 2482 flow [2024-06-28 03:11:40,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2135, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2482, PETRI_PLACES=145, PETRI_TRANSITIONS=227} [2024-06-28 03:11:40,350 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-28 03:11:40,350 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 227 transitions, 2482 flow [2024-06-28 03:11:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:40,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:40,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:40,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:11:40,350 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:40,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1195464609, now seen corresponding path program 6 times [2024-06-28 03:11:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:40,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303844996] [2024-06-28 03:11:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:41,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:41,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:41,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303844996] [2024-06-28 03:11:41,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303844996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:41,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:11:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179289760] [2024-06-28 03:11:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:41,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:11:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:11:41,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:11:41,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:41,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 227 transitions, 2482 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:41,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:41,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:41,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:44,302 INFO L124 PetriNetUnfolderBase]: 13007/18458 cut-off events. [2024-06-28 03:11:44,303 INFO L125 PetriNetUnfolderBase]: For 914308/914356 co-relation queries the response was YES. [2024-06-28 03:11:44,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140042 conditions, 18458 events. 13007/18458 cut-off events. For 914308/914356 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 106276 event pairs, 4691 based on Foata normal form. 59/18486 useless extension candidates. Maximal degree in co-relation 139980. Up to 16814 conditions per place. [2024-06-28 03:11:44,500 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 180 selfloop transitions, 89 changer transitions 0/277 dead transitions. [2024-06-28 03:11:44,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 277 transitions, 3196 flow [2024-06-28 03:11:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 03:11:44,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855769230769231 [2024-06-28 03:11:44,502 INFO L175 Difference]: Start difference. First operand has 145 places, 227 transitions, 2482 flow. Second operand 8 states and 202 transitions. [2024-06-28 03:11:44,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 277 transitions, 3196 flow [2024-06-28 03:11:45,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 277 transitions, 3007 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-28 03:11:45,583 INFO L231 Difference]: Finished difference. Result has 150 places, 227 transitions, 2483 flow [2024-06-28 03:11:45,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2483, PETRI_PLACES=150, PETRI_TRANSITIONS=227} [2024-06-28 03:11:45,583 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 95 predicate places. [2024-06-28 03:11:45,583 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 227 transitions, 2483 flow [2024-06-28 03:11:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:45,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:45,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:45,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:11:45,584 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:45,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1188099567, now seen corresponding path program 2 times [2024-06-28 03:11:45,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:45,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527113416] [2024-06-28 03:11:45,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:45,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527113416] [2024-06-28 03:11:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527113416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:46,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:46,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270485781] [2024-06-28 03:11:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:46,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:46,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:46,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:46,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 227 transitions, 2483 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:46,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:46,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:46,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:11:49,921 INFO L124 PetriNetUnfolderBase]: 12968/18393 cut-off events. [2024-06-28 03:11:49,922 INFO L125 PetriNetUnfolderBase]: For 928727/928771 co-relation queries the response was YES. [2024-06-28 03:11:50,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139991 conditions, 18393 events. 12968/18393 cut-off events. For 928727/928771 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 105669 event pairs, 4658 based on Foata normal form. 43/18405 useless extension candidates. Maximal degree in co-relation 139927. Up to 16607 conditions per place. [2024-06-28 03:11:50,120 INFO L140 encePairwiseOnDemand]: 40/52 looper letters, 177 selfloop transitions, 93 changer transitions 0/278 dead transitions. [2024-06-28 03:11:50,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 278 transitions, 3203 flow [2024-06-28 03:11:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:11:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:11:50,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 03:11:50,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49038461538461536 [2024-06-28 03:11:50,126 INFO L175 Difference]: Start difference. First operand has 150 places, 227 transitions, 2483 flow. Second operand 8 states and 204 transitions. [2024-06-28 03:11:50,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 278 transitions, 3203 flow [2024-06-28 03:11:51,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 278 transitions, 2963 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:11:51,052 INFO L231 Difference]: Finished difference. Result has 151 places, 227 transitions, 2438 flow [2024-06-28 03:11:51,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=2243, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2438, PETRI_PLACES=151, PETRI_TRANSITIONS=227} [2024-06-28 03:11:51,052 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 96 predicate places. [2024-06-28 03:11:51,052 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 227 transitions, 2438 flow [2024-06-28 03:11:51,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:51,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:11:51,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:11:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:11:51,053 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:11:51,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:11:51,053 INFO L85 PathProgramCache]: Analyzing trace with hash -929552127, now seen corresponding path program 3 times [2024-06-28 03:11:51,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:11:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876373419] [2024-06-28 03:11:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:11:51,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:11:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:11:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:11:52,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:11:52,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876373419] [2024-06-28 03:11:52,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876373419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:11:52,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:11:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:11:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796839678] [2024-06-28 03:11:52,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:11:52,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:11:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:11:52,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:11:52,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:11:52,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-06-28 03:11:52,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 227 transitions, 2438 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:11:52,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:11:52,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-06-28 03:11:52,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand