./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:54:49,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:54:49,738 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:54:49,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:54:49,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:54:49,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:54:49,772 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:54:49,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:54:49,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:54:49,775 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:54:49,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:54:49,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:54:49,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:54:49,777 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:54:49,777 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:54:49,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:54:49,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:54:49,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:54:49,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:54:49,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:54:49,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:54:49,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:54:49,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:54:49,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:54:49,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:54:49,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:54:49,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:54:49,780 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:54:49,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:54:49,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:54:49,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:54:49,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:54:49,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:54:49,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:54:49,783 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:54:49,784 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:54:49,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:54:49,784 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:54:50,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:54:50,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:54:50,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:54:50,031 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:54:50,031 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:54:50,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:54:50,147 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:54:50,148 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:54:50,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:54:51,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:54:51,245 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:54:51,246 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:54:51,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebabc951c/4550b08e609e42a7a8fa90675587c893/FLAG9b7fc8be3 [2024-06-28 03:54:51,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebabc951c/4550b08e609e42a7a8fa90675587c893 [2024-06-28 03:54:51,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:54:51,628 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:54:51,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:54:51,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:54:51,633 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:54:51,634 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:54:50" (1/2) ... [2024-06-28 03:54:51,635 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c9d6a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:54:51, skipping insertion in model container [2024-06-28 03:54:51,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:54:50" (1/2) ... [2024-06-28 03:54:51,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3238488b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:54:51, skipping insertion in model container [2024-06-28 03:54:51,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:54:51" (2/2) ... [2024-06-28 03:54:51,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c9d6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:51, skipping insertion in model container [2024-06-28 03:54:51,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:54:51" (2/2) ... [2024-06-28 03:54:51,637 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:54:51,713 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:54:51,714 INFO L97 edCorrectnessWitness]: Location invariant before [L836-L836] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:54:51,714 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:54:51,714 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 03:54:51,714 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:54:51,714 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 03:54:51,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:54:52,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:54:52,048 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:54:52,143 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:54:52,180 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:54:52,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52 WrapperNode [2024-06-28 03:54:52,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:54:52,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:54:52,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:54:52,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:54:52,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,224 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 125 [2024-06-28 03:54:52,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:54:52,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:54:52,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:54:52,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:54:52,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,248 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 03:54:52,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,261 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,262 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:54:52,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:54:52,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:54:52,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:54:52,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (1/1) ... [2024-06-28 03:54:52,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:54:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:54:52,355 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 03:54:52,376 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 03:54:52,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:54:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:54:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:54:52,399 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:54:52,399 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:54:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:54:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:54:52,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:54:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:54:52,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:54:52,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:54:52,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:54:52,402 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 03:54:52,514 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:54:52,516 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:54:52,795 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:54:52,795 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:54:52,897 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:54:52,897 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:54:52,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:54:52 BoogieIcfgContainer [2024-06-28 03:54:52,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:54:52,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:54:52,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:54:52,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:54:52,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:54:50" (1/4) ... [2024-06-28 03:54:52,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba2fc5c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:54:52, skipping insertion in model container [2024-06-28 03:54:52,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:54:51" (2/4) ... [2024-06-28 03:54:52,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba2fc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:54:52, skipping insertion in model container [2024-06-28 03:54:52,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:54:52" (3/4) ... [2024-06-28 03:54:52,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba2fc5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:54:52, skipping insertion in model container [2024-06-28 03:54:52,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:54:52" (4/4) ... [2024-06-28 03:54:52,905 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 03:54:52,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:54:52,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:54:52,919 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:54:52,956 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:54:52,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:54:53,034 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-06-28 03:54:53,034 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:54:53,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:54:53,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 41 transitions, 94 flow [2024-06-28 03:54:53,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-06-28 03:54:53,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:54:53,079 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;@4bcb87fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:54:53,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:54:53,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:54:53,085 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:54:53,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:54:53,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:53,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:54:53,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:53,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:53,090 INFO L85 PathProgramCache]: Analyzing trace with hash 362811812, now seen corresponding path program 1 times [2024-06-28 03:54:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266735746] [2024-06-28 03:54:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:53,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:53,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266735746] [2024-06-28 03:54:53,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266735746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:53,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:54:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697112444] [2024-06-28 03:54:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:53,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:54:53,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:54:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:54:53,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 03:54:53,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:53,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:53,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 03:54:53,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:54,152 INFO L124 PetriNetUnfolderBase]: 942/1465 cut-off events. [2024-06-28 03:54:54,152 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 03:54:54,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1465 events. 942/1465 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7311 event pairs, 546 based on Foata normal form. 2/1427 useless extension candidates. Maximal degree in co-relation 2969. Up to 1428 conditions per place. [2024-06-28 03:54:54,164 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 31 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2024-06-28 03:54:54,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 171 flow [2024-06-28 03:54:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:54:54,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:54:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 03:54:54,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2024-06-28 03:54:54,174 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 3 states and 80 transitions. [2024-06-28 03:54:54,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 171 flow [2024-06-28 03:54:54,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:54:54,179 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 100 flow [2024-06-28 03:54:54,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 03:54:54,183 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2024-06-28 03:54:54,183 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 100 flow [2024-06-28 03:54:54,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:54,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:54,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:54:54,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:54,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 769830979, now seen corresponding path program 1 times [2024-06-28 03:54:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233082857] [2024-06-28 03:54:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:54,622 INFO 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 03:54:54,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:54,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233082857] [2024-06-28 03:54:54,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233082857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:54,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:54,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:54:54,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600273733] [2024-06-28 03:54:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:54:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:54:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:54:54,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:54:54,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:54,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:54,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:54:54,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:54,879 INFO L124 PetriNetUnfolderBase]: 1338/2027 cut-off events. [2024-06-28 03:54:54,879 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-06-28 03:54:54,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 2027 events. 1338/2027 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9649 event pairs, 712 based on Foata normal form. 6/2031 useless extension candidates. Maximal degree in co-relation 4649. Up to 1969 conditions per place. [2024-06-28 03:54:54,889 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 03:54:54,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 258 flow [2024-06-28 03:54:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:54:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:54:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-06-28 03:54:54,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975609756097561 [2024-06-28 03:54:54,890 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 100 flow. Second operand 4 states and 98 transitions. [2024-06-28 03:54:54,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 258 flow [2024-06-28 03:54:54,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:54:54,892 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 152 flow [2024-06-28 03:54:54,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 03:54:54,893 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 03:54:54,893 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 152 flow [2024-06-28 03:54:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:54,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:54,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:54,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:54:54,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:54,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1615943924, now seen corresponding path program 1 times [2024-06-28 03:54:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:54,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484885808] [2024-06-28 03:54:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:55,419 INFO 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 03:54:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484885808] [2024-06-28 03:54:55,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484885808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:55,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:55,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:54:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628738195] [2024-06-28 03:54:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:54:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:54:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:54:55,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:54:55,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:55,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:55,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:54:55,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:55,714 INFO L124 PetriNetUnfolderBase]: 980/1539 cut-off events. [2024-06-28 03:54:55,714 INFO L125 PetriNetUnfolderBase]: For 731/731 co-relation queries the response was YES. [2024-06-28 03:54:55,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 1539 events. 980/1539 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7617 event pairs, 562 based on Foata normal form. 3/1498 useless extension candidates. Maximal degree in co-relation 3906. Up to 1473 conditions per place. [2024-06-28 03:54:55,722 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 40 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-28 03:54:55,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 306 flow [2024-06-28 03:54:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:54:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:54:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-28 03:54:55,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 03:54:55,724 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 152 flow. Second operand 5 states and 105 transitions. [2024-06-28 03:54:55,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 306 flow [2024-06-28 03:54:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 304 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 03:54:55,726 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 221 flow [2024-06-28 03:54:55,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-06-28 03:54:55,727 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 03:54:55,727 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 221 flow [2024-06-28 03:54:55,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:55,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:55,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:55,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:54:55,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:55,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash 580485505, now seen corresponding path program 1 times [2024-06-28 03:54:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:55,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705535978] [2024-06-28 03:54:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:56,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:56,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705535978] [2024-06-28 03:54:56,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705535978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:54:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137875000] [2024-06-28 03:54:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:56,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:54:56,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:54:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:54:56,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 41 [2024-06-28 03:54:56,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:56,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:56,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 41 [2024-06-28 03:54:56,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:56,946 INFO L124 PetriNetUnfolderBase]: 1323/2004 cut-off events. [2024-06-28 03:54:56,947 INFO L125 PetriNetUnfolderBase]: For 1874/1874 co-relation queries the response was YES. [2024-06-28 03:54:56,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 2004 events. 1323/2004 cut-off events. For 1874/1874 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9554 event pairs, 467 based on Foata normal form. 6/2008 useless extension candidates. Maximal degree in co-relation 5774. Up to 1916 conditions per place. [2024-06-28 03:54:56,958 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 59 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-28 03:54:56,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 445 flow [2024-06-28 03:54:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:54:56,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:54:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 03:54:56,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2024-06-28 03:54:56,960 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 221 flow. Second operand 6 states and 137 transitions. [2024-06-28 03:54:56,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 445 flow [2024-06-28 03:54:56,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 77 transitions, 432 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 03:54:56,963 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 265 flow [2024-06-28 03:54:56,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 03:54:56,964 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2024-06-28 03:54:56,964 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 265 flow [2024-06-28 03:54:56,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:56,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:56,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:56,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:54:56,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:56,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:56,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1411385553, now seen corresponding path program 1 times [2024-06-28 03:54:56,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:56,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964237206] [2024-06-28 03:54:56,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:56,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:54:57,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964237206] [2024-06-28 03:54:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964237206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:57,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:57,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:54:57,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256824147] [2024-06-28 03:54:57,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:57,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:54:57,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:57,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:54:57,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:54:57,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:54:57,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:57,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:57,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:54:57,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:57,897 INFO L124 PetriNetUnfolderBase]: 1378/2095 cut-off events. [2024-06-28 03:54:57,898 INFO L125 PetriNetUnfolderBase]: For 3089/3089 co-relation queries the response was YES. [2024-06-28 03:54:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6533 conditions, 2095 events. 1378/2095 cut-off events. For 3089/3089 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10095 event pairs, 516 based on Foata normal form. 6/2097 useless extension candidates. Maximal degree in co-relation 6510. Up to 1942 conditions per place. [2024-06-28 03:54:57,908 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 59 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-28 03:54:57,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 523 flow [2024-06-28 03:54:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:54:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:54:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 03:54:57,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:54:57,909 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 265 flow. Second operand 6 states and 120 transitions. [2024-06-28 03:54:57,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 523 flow [2024-06-28 03:54:57,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 498 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:54:57,913 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 340 flow [2024-06-28 03:54:57,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-28 03:54:57,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2024-06-28 03:54:57,914 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 340 flow [2024-06-28 03:54:57,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:57,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:57,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:57,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:54:57,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:57,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1104866197, now seen corresponding path program 1 times [2024-06-28 03:54:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604106319] [2024-06-28 03:54:57,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:58,425 INFO 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 03:54:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604106319] [2024-06-28 03:54:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604106319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:58,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:54:58,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040018388] [2024-06-28 03:54:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:58,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:54:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:58,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:54:58,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:54:58,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:54:58,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:58,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:58,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:54:58,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:58,828 INFO L124 PetriNetUnfolderBase]: 1412/2162 cut-off events. [2024-06-28 03:54:58,828 INFO L125 PetriNetUnfolderBase]: For 4830/4830 co-relation queries the response was YES. [2024-06-28 03:54:58,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7599 conditions, 2162 events. 1412/2162 cut-off events. For 4830/4830 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10418 event pairs, 547 based on Foata normal form. 4/2164 useless extension candidates. Maximal degree in co-relation 7573. Up to 2069 conditions per place. [2024-06-28 03:54:58,839 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 69 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-06-28 03:54:58,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 622 flow [2024-06-28 03:54:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:54:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:54:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:54:58,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-28 03:54:58,841 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 340 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:54:58,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 622 flow [2024-06-28 03:54:58,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 90 transitions, 606 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 03:54:58,846 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 432 flow [2024-06-28 03:54:58,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 03:54:58,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 03:54:58,847 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 432 flow [2024-06-28 03:54:58,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:58,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:58,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:54:58,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:58,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:58,848 INFO L85 PathProgramCache]: Analyzing trace with hash -587341517, now seen corresponding path program 2 times [2024-06-28 03:54:58,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:58,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254708819] [2024-06-28 03:54:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:58,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:54:59,320 INFO 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 03:54:59,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:54:59,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254708819] [2024-06-28 03:54:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254708819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:54:59,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:54:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:54:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717447553] [2024-06-28 03:54:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:54:59,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:54:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:54:59,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:54:59,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:54:59,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:54:59,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:59,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:54:59,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:54:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:54:59,728 INFO L124 PetriNetUnfolderBase]: 1434/2199 cut-off events. [2024-06-28 03:54:59,729 INFO L125 PetriNetUnfolderBase]: For 6358/6358 co-relation queries the response was YES. [2024-06-28 03:54:59,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 2199 events. 1434/2199 cut-off events. For 6358/6358 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10686 event pairs, 538 based on Foata normal form. 4/2201 useless extension candidates. Maximal degree in co-relation 8055. Up to 2083 conditions per place. [2024-06-28 03:54:59,741 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 67 selfloop transitions, 17 changer transitions 0/89 dead transitions. [2024-06-28 03:54:59,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 684 flow [2024-06-28 03:54:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:54:59,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:54:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:54:59,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:54:59,743 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 432 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:54:59,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 684 flow [2024-06-28 03:54:59,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 645 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:54:59,748 INFO L231 Difference]: Finished difference. Result has 68 places, 71 transitions, 473 flow [2024-06-28 03:54:59,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=68, PETRI_TRANSITIONS=71} [2024-06-28 03:54:59,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 03:54:59,749 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 71 transitions, 473 flow [2024-06-28 03:54:59,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:54:59,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:54:59,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:54:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:54:59,750 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:54:59,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:54:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -553200287, now seen corresponding path program 3 times [2024-06-28 03:54:59,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:54:59,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973692373] [2024-06-28 03:54:59,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:54:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:54:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:00,249 INFO 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 03:55:00,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:00,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973692373] [2024-06-28 03:55:00,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973692373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:00,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:00,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:55:00,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843806665] [2024-06-28 03:55:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:00,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:55:00,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:00,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:55:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:55:00,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:00,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 71 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:00,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:00,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:00,614 INFO L124 PetriNetUnfolderBase]: 1408/2158 cut-off events. [2024-06-28 03:55:00,615 INFO L125 PetriNetUnfolderBase]: For 7628/7628 co-relation queries the response was YES. [2024-06-28 03:55:00,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8140 conditions, 2158 events. 1408/2158 cut-off events. For 7628/7628 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10438 event pairs, 542 based on Foata normal form. 8/2160 useless extension candidates. Maximal degree in co-relation 8110. Up to 1948 conditions per place. [2024-06-28 03:55:00,651 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 61 selfloop transitions, 24 changer transitions 0/90 dead transitions. [2024-06-28 03:55:00,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 712 flow [2024-06-28 03:55:00,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:55:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:55:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 03:55:00,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 03:55:00,654 INFO L175 Difference]: Start difference. First operand has 68 places, 71 transitions, 473 flow. Second operand 6 states and 118 transitions. [2024-06-28 03:55:00,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 712 flow [2024-06-28 03:55:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 662 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:00,663 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 512 flow [2024-06-28 03:55:00,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-28 03:55:00,665 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-06-28 03:55:00,666 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 512 flow [2024-06-28 03:55:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:00,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:55:00,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1856094539, now seen corresponding path program 1 times [2024-06-28 03:55:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:00,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989330269] [2024-06-28 03:55:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989330269] [2024-06-28 03:55:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989330269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:01,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121222752] [2024-06-28 03:55:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:01,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:01,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:01,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:01,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:01,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:01,771 INFO L124 PetriNetUnfolderBase]: 1414/2177 cut-off events. [2024-06-28 03:55:01,771 INFO L125 PetriNetUnfolderBase]: For 7521/7521 co-relation queries the response was YES. [2024-06-28 03:55:01,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 2177 events. 1414/2177 cut-off events. For 7521/7521 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10585 event pairs, 501 based on Foata normal form. 4/2175 useless extension candidates. Maximal degree in co-relation 8218. Up to 1999 conditions per place. [2024-06-28 03:55:01,784 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 74 selfloop transitions, 28 changer transitions 0/107 dead transitions. [2024-06-28 03:55:01,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 107 transitions, 896 flow [2024-06-28 03:55:01,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 03:55:01,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46689895470383275 [2024-06-28 03:55:01,785 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 512 flow. Second operand 7 states and 134 transitions. [2024-06-28 03:55:01,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 107 transitions, 896 flow [2024-06-28 03:55:01,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 848 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:01,793 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 699 flow [2024-06-28 03:55:01,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=699, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2024-06-28 03:55:01,794 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-28 03:55:01,794 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 699 flow [2024-06-28 03:55:01,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:01,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:01,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:55:01,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1704357308, now seen corresponding path program 1 times [2024-06-28 03:55:01,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457024788] [2024-06-28 03:55:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:02,649 INFO 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 03:55:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457024788] [2024-06-28 03:55:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457024788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:02,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:02,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196305646] [2024-06-28 03:55:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:02,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:02,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:02,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:02,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:02,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:02,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 88 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:02,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:02,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:02,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:03,265 INFO L124 PetriNetUnfolderBase]: 1423/2192 cut-off events. [2024-06-28 03:55:03,265 INFO L125 PetriNetUnfolderBase]: For 9389/9389 co-relation queries the response was YES. [2024-06-28 03:55:03,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8961 conditions, 2192 events. 1423/2192 cut-off events. For 9389/9389 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10695 event pairs, 467 based on Foata normal form. 8/2194 useless extension candidates. Maximal degree in co-relation 8926. Up to 1978 conditions per place. [2024-06-28 03:55:03,277 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 79 selfloop transitions, 31 changer transitions 0/115 dead transitions. [2024-06-28 03:55:03,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 115 transitions, 1017 flow [2024-06-28 03:55:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:55:03,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:55:03,279 INFO L175 Difference]: Start difference. First operand has 77 places, 88 transitions, 699 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:55:03,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 115 transitions, 1017 flow [2024-06-28 03:55:03,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 954 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:03,289 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 738 flow [2024-06-28 03:55:03,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2024-06-28 03:55:03,290 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-06-28 03:55:03,290 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 738 flow [2024-06-28 03:55:03,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:03,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:03,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:55:03,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:03,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:03,291 INFO L85 PathProgramCache]: Analyzing trace with hash -816536174, now seen corresponding path program 1 times [2024-06-28 03:55:03,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:03,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020878309] [2024-06-28 03:55:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:03,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:03,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:03,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020878309] [2024-06-28 03:55:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020878309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025982445] [2024-06-28 03:55:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:03,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:03,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:04,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:04,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 738 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:04,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:04,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:04,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:04,527 INFO L124 PetriNetUnfolderBase]: 1418/2188 cut-off events. [2024-06-28 03:55:04,528 INFO L125 PetriNetUnfolderBase]: For 10690/10690 co-relation queries the response was YES. [2024-06-28 03:55:04,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9309 conditions, 2188 events. 1418/2188 cut-off events. For 10690/10690 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10676 event pairs, 474 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9273. Up to 2068 conditions per place. [2024-06-28 03:55:04,541 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 96 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-06-28 03:55:04,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 1062 flow [2024-06-28 03:55:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:55:04,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:55:04,543 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 738 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:55:04,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 1062 flow [2024-06-28 03:55:04,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 986 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:04,575 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 734 flow [2024-06-28 03:55:04,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=734, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-06-28 03:55:04,576 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-28 03:55:04,576 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 734 flow [2024-06-28 03:55:04,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:04,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:04,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:04,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:55:04,576 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:04,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1141422218, now seen corresponding path program 1 times [2024-06-28 03:55:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:04,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056884654] [2024-06-28 03:55:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:05,235 INFO 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 03:55:05,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056884654] [2024-06-28 03:55:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056884654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:05,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407301730] [2024-06-28 03:55:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:05,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:05,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 734 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:05,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:05,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:05,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:05,657 INFO L124 PetriNetUnfolderBase]: 1429/2201 cut-off events. [2024-06-28 03:55:05,658 INFO L125 PetriNetUnfolderBase]: For 12757/12757 co-relation queries the response was YES. [2024-06-28 03:55:05,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 2201 events. 1429/2201 cut-off events. For 12757/12757 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10724 event pairs, 477 based on Foata normal form. 2/2197 useless extension candidates. Maximal degree in co-relation 9607. Up to 2003 conditions per place. [2024-06-28 03:55:05,670 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 87 selfloop transitions, 29 changer transitions 0/121 dead transitions. [2024-06-28 03:55:05,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 121 transitions, 1116 flow [2024-06-28 03:55:05,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 03:55:05,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 03:55:05,672 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 734 flow. Second operand 7 states and 135 transitions. [2024-06-28 03:55:05,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 121 transitions, 1116 flow [2024-06-28 03:55:05,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 1068 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:05,683 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 806 flow [2024-06-28 03:55:05,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=806, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2024-06-28 03:55:05,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 42 predicate places. [2024-06-28 03:55:05,684 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 806 flow [2024-06-28 03:55:05,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:05,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:05,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:05,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:55:05,684 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1295162892, now seen corresponding path program 2 times [2024-06-28 03:55:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:05,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831894590] [2024-06-28 03:55:05,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:05,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831894590] [2024-06-28 03:55:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831894590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:06,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:06,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798774978] [2024-06-28 03:55:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:06,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:06,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:06,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:06,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:06,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 806 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:06,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:06,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:06,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:06,966 INFO L124 PetriNetUnfolderBase]: 1435/2210 cut-off events. [2024-06-28 03:55:06,966 INFO L125 PetriNetUnfolderBase]: For 15280/15280 co-relation queries the response was YES. [2024-06-28 03:55:06,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 2210 events. 1435/2210 cut-off events. For 15280/15280 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10721 event pairs, 477 based on Foata normal form. 4/2208 useless extension candidates. Maximal degree in co-relation 10114. Up to 1972 conditions per place. [2024-06-28 03:55:06,980 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 81 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-06-28 03:55:06,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 1137 flow [2024-06-28 03:55:06,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:55:06,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:55:06,982 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 806 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:55:06,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 1137 flow [2024-06-28 03:55:06,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 1081 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:07,000 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 873 flow [2024-06-28 03:55:07,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=873, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-28 03:55:07,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 46 predicate places. [2024-06-28 03:55:07,002 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 873 flow [2024-06-28 03:55:07,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:07,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:07,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:07,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:55:07,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:07,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1624092371, now seen corresponding path program 1 times [2024-06-28 03:55:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:07,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693329517] [2024-06-28 03:55:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:07,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693329517] [2024-06-28 03:55:07,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693329517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:07,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:07,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16744318] [2024-06-28 03:55:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:07,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:07,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:07,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 873 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:07,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:07,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:07,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:08,284 INFO L124 PetriNetUnfolderBase]: 1469/2261 cut-off events. [2024-06-28 03:55:08,285 INFO L125 PetriNetUnfolderBase]: For 17668/17668 co-relation queries the response was YES. [2024-06-28 03:55:08,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2261 events. 1469/2261 cut-off events. For 17668/17668 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10999 event pairs, 478 based on Foata normal form. 2/2255 useless extension candidates. Maximal degree in co-relation 10771. Up to 2129 conditions per place. [2024-06-28 03:55:08,299 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 105 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-28 03:55:08,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 135 transitions, 1286 flow [2024-06-28 03:55:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:55:08,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:55:08,301 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 873 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:55:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 135 transitions, 1286 flow [2024-06-28 03:55:08,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 135 transitions, 1173 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:08,315 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 939 flow [2024-06-28 03:55:08,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=939, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-06-28 03:55:08,315 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 51 predicate places. [2024-06-28 03:55:08,315 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 939 flow [2024-06-28 03:55:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:08,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:08,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:55:08,316 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:08,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 219458003, now seen corresponding path program 2 times [2024-06-28 03:55:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:08,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664724105] [2024-06-28 03:55:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:08,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:09,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:09,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664724105] [2024-06-28 03:55:09,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664724105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:09,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:09,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570730672] [2024-06-28 03:55:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:09,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:09,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:09,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:09,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:09,464 INFO L124 PetriNetUnfolderBase]: 1464/2252 cut-off events. [2024-06-28 03:55:09,464 INFO L125 PetriNetUnfolderBase]: For 20226/20226 co-relation queries the response was YES. [2024-06-28 03:55:09,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11092 conditions, 2252 events. 1464/2252 cut-off events. For 20226/20226 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 10965 event pairs, 464 based on Foata normal form. 2/2244 useless extension candidates. Maximal degree in co-relation 11049. Up to 1971 conditions per place. [2024-06-28 03:55:09,478 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 75 selfloop transitions, 52 changer transitions 0/132 dead transitions. [2024-06-28 03:55:09,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 132 transitions, 1273 flow [2024-06-28 03:55:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:55:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:55:09,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 03:55:09,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483739837398374 [2024-06-28 03:55:09,480 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 939 flow. Second operand 6 states and 119 transitions. [2024-06-28 03:55:09,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 132 transitions, 1273 flow [2024-06-28 03:55:09,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 132 transitions, 1227 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 03:55:09,496 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 1066 flow [2024-06-28 03:55:09,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1066, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-06-28 03:55:09,497 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-28 03:55:09,497 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 1066 flow [2024-06-28 03:55:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:09,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:09,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:09,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:55:09,498 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:09,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2056858795, now seen corresponding path program 1 times [2024-06-28 03:55:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:09,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634740809] [2024-06-28 03:55:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:10,019 INFO 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 03:55:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634740809] [2024-06-28 03:55:10,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634740809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:10,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:55:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048037628] [2024-06-28 03:55:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:55:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:55:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:55:10,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:10,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 1066 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:10,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:10,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:10,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:10,514 INFO L124 PetriNetUnfolderBase]: 1474/2276 cut-off events. [2024-06-28 03:55:10,514 INFO L125 PetriNetUnfolderBase]: For 23475/23475 co-relation queries the response was YES. [2024-06-28 03:55:10,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11742 conditions, 2276 events. 1474/2276 cut-off events. For 23475/23475 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11155 event pairs, 410 based on Foata normal form. 2/2276 useless extension candidates. Maximal degree in co-relation 11697. Up to 2130 conditions per place. [2024-06-28 03:55:10,528 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 115 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-28 03:55:10,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 144 transitions, 1500 flow [2024-06-28 03:55:10,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:55:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:55:10,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:55:10,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2024-06-28 03:55:10,529 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 1066 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:55:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 144 transitions, 1500 flow [2024-06-28 03:55:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 144 transitions, 1383 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:10,553 INFO L231 Difference]: Finished difference. Result has 100 places, 127 transitions, 1092 flow [2024-06-28 03:55:10,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1092, PETRI_PLACES=100, PETRI_TRANSITIONS=127} [2024-06-28 03:55:10,554 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 03:55:10,554 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 127 transitions, 1092 flow [2024-06-28 03:55:10,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:10,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:10,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:55:10,554 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:10,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1504542205, now seen corresponding path program 1 times [2024-06-28 03:55:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:10,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921474274] [2024-06-28 03:55:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:10,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:11,331 INFO 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 03:55:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921474274] [2024-06-28 03:55:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921474274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:11,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:11,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773355571] [2024-06-28 03:55:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:11,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:11,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 127 transitions, 1092 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:11,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:11,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:11,951 INFO L124 PetriNetUnfolderBase]: 1599/2481 cut-off events. [2024-06-28 03:55:11,951 INFO L125 PetriNetUnfolderBase]: For 27151/27151 co-relation queries the response was YES. [2024-06-28 03:55:11,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12637 conditions, 2481 events. 1599/2481 cut-off events. For 27151/27151 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12433 event pairs, 442 based on Foata normal form. 28/2503 useless extension candidates. Maximal degree in co-relation 12590. Up to 2032 conditions per place. [2024-06-28 03:55:11,965 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 112 selfloop transitions, 51 changer transitions 0/168 dead transitions. [2024-06-28 03:55:11,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 168 transitions, 1675 flow [2024-06-28 03:55:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:55:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:55:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 03:55:11,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509485094850946 [2024-06-28 03:55:11,966 INFO L175 Difference]: Start difference. First operand has 100 places, 127 transitions, 1092 flow. Second operand 9 states and 179 transitions. [2024-06-28 03:55:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 168 transitions, 1675 flow [2024-06-28 03:55:11,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 168 transitions, 1657 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 03:55:11,991 INFO L231 Difference]: Finished difference. Result has 109 places, 133 transitions, 1283 flow [2024-06-28 03:55:11,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1283, PETRI_PLACES=109, PETRI_TRANSITIONS=133} [2024-06-28 03:55:11,992 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-06-28 03:55:11,992 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 1283 flow [2024-06-28 03:55:11,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:11,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:11,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:11,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:55:11,992 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:11,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:11,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1255868543, now seen corresponding path program 2 times [2024-06-28 03:55:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:11,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454362032] [2024-06-28 03:55:11,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:11,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:12,786 INFO 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 03:55:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454362032] [2024-06-28 03:55:12,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454362032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:12,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:12,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:12,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191084052] [2024-06-28 03:55:12,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:12,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:12,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:12,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:12,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:12,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:12,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 1283 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:12,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:12,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:12,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:13,332 INFO L124 PetriNetUnfolderBase]: 1727/2689 cut-off events. [2024-06-28 03:55:13,332 INFO L125 PetriNetUnfolderBase]: For 33433/33433 co-relation queries the response was YES. [2024-06-28 03:55:13,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14905 conditions, 2689 events. 1727/2689 cut-off events. For 33433/33433 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13817 event pairs, 435 based on Foata normal form. 4/2687 useless extension candidates. Maximal degree in co-relation 14854. Up to 1958 conditions per place. [2024-06-28 03:55:13,349 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 114 selfloop transitions, 51 changer transitions 0/170 dead transitions. [2024-06-28 03:55:13,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 1911 flow [2024-06-28 03:55:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:55:13,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49390243902439024 [2024-06-28 03:55:13,350 INFO L175 Difference]: Start difference. First operand has 109 places, 133 transitions, 1283 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:55:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 1911 flow [2024-06-28 03:55:13,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 170 transitions, 1839 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:13,411 INFO L231 Difference]: Finished difference. Result has 112 places, 136 transitions, 1376 flow [2024-06-28 03:55:13,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1376, PETRI_PLACES=112, PETRI_TRANSITIONS=136} [2024-06-28 03:55:13,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 70 predicate places. [2024-06-28 03:55:13,416 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 136 transitions, 1376 flow [2024-06-28 03:55:13,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:13,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:13,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:13,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:55:13,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:13,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1786528235, now seen corresponding path program 2 times [2024-06-28 03:55:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223349008] [2024-06-28 03:55:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:13,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:13,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223349008] [2024-06-28 03:55:13,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223349008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:13,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:55:13,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734014367] [2024-06-28 03:55:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:13,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:55:13,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:13,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:55:13,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:55:13,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:13,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 136 transitions, 1376 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:13,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:13,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:13,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:14,436 INFO L124 PetriNetUnfolderBase]: 1741/2724 cut-off events. [2024-06-28 03:55:14,437 INFO L125 PetriNetUnfolderBase]: For 36618/36618 co-relation queries the response was YES. [2024-06-28 03:55:14,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15453 conditions, 2724 events. 1741/2724 cut-off events. For 36618/36618 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14042 event pairs, 463 based on Foata normal form. 6/2728 useless extension candidates. Maximal degree in co-relation 15400. Up to 2553 conditions per place. [2024-06-28 03:55:14,453 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 121 selfloop transitions, 28 changer transitions 0/154 dead transitions. [2024-06-28 03:55:14,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 154 transitions, 1764 flow [2024-06-28 03:55:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:55:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:55:14,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-28 03:55:14,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073170731707317 [2024-06-28 03:55:14,454 INFO L175 Difference]: Start difference. First operand has 112 places, 136 transitions, 1376 flow. Second operand 5 states and 104 transitions. [2024-06-28 03:55:14,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 154 transitions, 1764 flow [2024-06-28 03:55:14,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 154 transitions, 1673 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:14,498 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 1402 flow [2024-06-28 03:55:14,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1402, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2024-06-28 03:55:14,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2024-06-28 03:55:14,499 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 1402 flow [2024-06-28 03:55:14,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:14,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:14,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:14,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:55:14,499 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:14,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:14,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2115579889, now seen corresponding path program 1 times [2024-06-28 03:55:14,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:14,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187312053] [2024-06-28 03:55:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:14,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:15,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:15,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187312053] [2024-06-28 03:55:15,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187312053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:15,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:15,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621968226] [2024-06-28 03:55:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:15,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:15,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:15,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:15,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:15,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:15,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 1402 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:15,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:15,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:15,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:15,937 INFO L124 PetriNetUnfolderBase]: 1733/2714 cut-off events. [2024-06-28 03:55:15,937 INFO L125 PetriNetUnfolderBase]: For 38415/38415 co-relation queries the response was YES. [2024-06-28 03:55:15,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15745 conditions, 2714 events. 1733/2714 cut-off events. For 38415/38415 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14027 event pairs, 464 based on Foata normal form. 4/2716 useless extension candidates. Maximal degree in co-relation 15690. Up to 2539 conditions per place. [2024-06-28 03:55:15,954 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 138 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2024-06-28 03:55:15,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 168 transitions, 1847 flow [2024-06-28 03:55:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:55:15,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:55:15,957 INFO L175 Difference]: Start difference. First operand has 113 places, 139 transitions, 1402 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:55:15,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 168 transitions, 1847 flow [2024-06-28 03:55:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 168 transitions, 1796 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:16,034 INFO L231 Difference]: Finished difference. Result has 119 places, 142 transitions, 1459 flow [2024-06-28 03:55:16,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1459, PETRI_PLACES=119, PETRI_TRANSITIONS=142} [2024-06-28 03:55:16,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 77 predicate places. [2024-06-28 03:55:16,035 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 142 transitions, 1459 flow [2024-06-28 03:55:16,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:16,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:16,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:16,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:55:16,036 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:16,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:16,036 INFO L85 PathProgramCache]: Analyzing trace with hash 946135221, now seen corresponding path program 2 times [2024-06-28 03:55:16,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:16,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111845986] [2024-06-28 03:55:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:16,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:16,825 INFO 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 03:55:16,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111845986] [2024-06-28 03:55:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111845986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:16,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126670211] [2024-06-28 03:55:16,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:16,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:16,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:16,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 142 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:16,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:16,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:17,449 INFO L124 PetriNetUnfolderBase]: 1750/2746 cut-off events. [2024-06-28 03:55:17,449 INFO L125 PetriNetUnfolderBase]: For 42610/42610 co-relation queries the response was YES. [2024-06-28 03:55:17,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16238 conditions, 2746 events. 1750/2746 cut-off events. For 42610/42610 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 14235 event pairs, 457 based on Foata normal form. 4/2748 useless extension candidates. Maximal degree in co-relation 16181. Up to 2558 conditions per place. [2024-06-28 03:55:17,467 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 140 selfloop transitions, 27 changer transitions 0/172 dead transitions. [2024-06-28 03:55:17,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 172 transitions, 1915 flow [2024-06-28 03:55:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:55:17,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:55:17,468 INFO L175 Difference]: Start difference. First operand has 119 places, 142 transitions, 1459 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:55:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 172 transitions, 1915 flow [2024-06-28 03:55:17,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 172 transitions, 1837 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:17,517 INFO L231 Difference]: Finished difference. Result has 122 places, 144 transitions, 1481 flow [2024-06-28 03:55:17,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1481, PETRI_PLACES=122, PETRI_TRANSITIONS=144} [2024-06-28 03:55:17,518 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-28 03:55:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 144 transitions, 1481 flow [2024-06-28 03:55:17,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:17,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:55:17,518 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:17,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash 943278261, now seen corresponding path program 3 times [2024-06-28 03:55:17,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042205046] [2024-06-28 03:55:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:17,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:18,213 INFO 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 03:55:18,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:18,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042205046] [2024-06-28 03:55:18,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042205046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:18,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:18,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:18,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120843147] [2024-06-28 03:55:18,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:18,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:18,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:18,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:18,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 1481 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:18,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:18,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:18,854 INFO L124 PetriNetUnfolderBase]: 1742/2734 cut-off events. [2024-06-28 03:55:18,854 INFO L125 PetriNetUnfolderBase]: For 45285/45285 co-relation queries the response was YES. [2024-06-28 03:55:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16358 conditions, 2734 events. 1742/2734 cut-off events. For 45285/45285 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14138 event pairs, 352 based on Foata normal form. 4/2736 useless extension candidates. Maximal degree in co-relation 16300. Up to 2528 conditions per place. [2024-06-28 03:55:18,872 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 147 selfloop transitions, 23 changer transitions 0/175 dead transitions. [2024-06-28 03:55:18,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 1949 flow [2024-06-28 03:55:18,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:18,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:55:18,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:55:18,881 INFO L175 Difference]: Start difference. First operand has 122 places, 144 transitions, 1481 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:55:18,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 1949 flow [2024-06-28 03:55:18,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 175 transitions, 1869 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:18,930 INFO L231 Difference]: Finished difference. Result has 124 places, 146 transitions, 1496 flow [2024-06-28 03:55:18,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1496, PETRI_PLACES=124, PETRI_TRANSITIONS=146} [2024-06-28 03:55:18,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-28 03:55:18,930 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 146 transitions, 1496 flow [2024-06-28 03:55:18,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:18,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:18,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:18,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:55:18,931 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:18,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:18,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1233736725, now seen corresponding path program 1 times [2024-06-28 03:55:18,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:18,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114909872] [2024-06-28 03:55:18,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:18,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:19,804 INFO 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 03:55:19,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114909872] [2024-06-28 03:55:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114909872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:19,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:19,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:19,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128755561] [2024-06-28 03:55:19,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:19,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:19,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:19,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:19,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 146 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:19,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:19,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:19,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:20,459 INFO L124 PetriNetUnfolderBase]: 1764/2762 cut-off events. [2024-06-28 03:55:20,459 INFO L125 PetriNetUnfolderBase]: For 49420/49420 co-relation queries the response was YES. [2024-06-28 03:55:20,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16796 conditions, 2762 events. 1764/2762 cut-off events. For 49420/49420 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 14372 event pairs, 473 based on Foata normal form. 2/2758 useless extension candidates. Maximal degree in co-relation 16737. Up to 2465 conditions per place. [2024-06-28 03:55:20,478 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 126 selfloop transitions, 50 changer transitions 0/181 dead transitions. [2024-06-28 03:55:20,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 181 transitions, 2105 flow [2024-06-28 03:55:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:55:20,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:55:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:55:20,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46883468834688347 [2024-06-28 03:55:20,479 INFO L175 Difference]: Start difference. First operand has 124 places, 146 transitions, 1496 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:55:20,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 181 transitions, 2105 flow [2024-06-28 03:55:20,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 181 transitions, 2028 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:20,534 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1624 flow [2024-06-28 03:55:20,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1624, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-06-28 03:55:20,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 03:55:20,534 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1624 flow [2024-06-28 03:55:20,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:20,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:20,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:20,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:55:20,535 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:20,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash 742830095, now seen corresponding path program 2 times [2024-06-28 03:55:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263666131] [2024-06-28 03:55:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:21,388 INFO 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 03:55:21,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263666131] [2024-06-28 03:55:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263666131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:21,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:21,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:21,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339839439] [2024-06-28 03:55:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:21,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:21,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:21,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:21,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1624 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:21,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:21,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:21,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:21,952 INFO L124 PetriNetUnfolderBase]: 1770/2772 cut-off events. [2024-06-28 03:55:21,952 INFO L125 PetriNetUnfolderBase]: For 54001/54001 co-relation queries the response was YES. [2024-06-28 03:55:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17344 conditions, 2772 events. 1770/2772 cut-off events. For 54001/54001 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14440 event pairs, 452 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 17284. Up to 2409 conditions per place. [2024-06-28 03:55:21,971 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 103 selfloop transitions, 65 changer transitions 0/173 dead transitions. [2024-06-28 03:55:21,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 173 transitions, 2074 flow [2024-06-28 03:55:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:55:21,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-28 03:55:21,972 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1624 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:55:21,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 173 transitions, 2074 flow [2024-06-28 03:55:22,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 173 transitions, 1908 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:22,030 INFO L231 Difference]: Finished difference. Result has 128 places, 155 transitions, 1673 flow [2024-06-28 03:55:22,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1673, PETRI_PLACES=128, PETRI_TRANSITIONS=155} [2024-06-28 03:55:22,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 86 predicate places. [2024-06-28 03:55:22,030 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 155 transitions, 1673 flow [2024-06-28 03:55:22,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:22,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:22,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:22,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:55:22,031 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:22,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash -648479334, now seen corresponding path program 1 times [2024-06-28 03:55:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393523370] [2024-06-28 03:55:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:22,567 INFO 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 03:55:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:22,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393523370] [2024-06-28 03:55:22,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393523370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:22,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:22,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:22,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809354898] [2024-06-28 03:55:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:22,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:22,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:22,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 155 transitions, 1673 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:22,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:22,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:22,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:23,309 INFO L124 PetriNetUnfolderBase]: 1790/2809 cut-off events. [2024-06-28 03:55:23,309 INFO L125 PetriNetUnfolderBase]: For 59639/59639 co-relation queries the response was YES. [2024-06-28 03:55:23,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 2809 events. 1790/2809 cut-off events. For 59639/59639 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14633 event pairs, 453 based on Foata normal form. 4/2811 useless extension candidates. Maximal degree in co-relation 17920. Up to 2573 conditions per place. [2024-06-28 03:55:23,329 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 141 selfloop transitions, 36 changer transitions 0/182 dead transitions. [2024-06-28 03:55:23,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 182 transitions, 2243 flow [2024-06-28 03:55:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:55:23,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:55:23,331 INFO L175 Difference]: Start difference. First operand has 128 places, 155 transitions, 1673 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:55:23,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 182 transitions, 2243 flow [2024-06-28 03:55:23,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 2080 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:23,400 INFO L231 Difference]: Finished difference. Result has 130 places, 161 transitions, 1678 flow [2024-06-28 03:55:23,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1678, PETRI_PLACES=130, PETRI_TRANSITIONS=161} [2024-06-28 03:55:23,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 03:55:23,400 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 161 transitions, 1678 flow [2024-06-28 03:55:23,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:23,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:23,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:23,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:55:23,401 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:23,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -603839351, now seen corresponding path program 3 times [2024-06-28 03:55:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:23,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233349285] [2024-06-28 03:55:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:24,215 INFO 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 03:55:24,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:24,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233349285] [2024-06-28 03:55:24,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233349285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:24,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:24,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112743049] [2024-06-28 03:55:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:24,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:24,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:24,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:24,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 161 transitions, 1678 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:24,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:24,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:24,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:24,872 INFO L124 PetriNetUnfolderBase]: 1785/2793 cut-off events. [2024-06-28 03:55:24,872 INFO L125 PetriNetUnfolderBase]: For 62427/62427 co-relation queries the response was YES. [2024-06-28 03:55:24,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17881 conditions, 2793 events. 1785/2793 cut-off events. For 62427/62427 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14563 event pairs, 461 based on Foata normal form. 2/2789 useless extension candidates. Maximal degree in co-relation 17819. Up to 2456 conditions per place. [2024-06-28 03:55:24,892 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 133 selfloop transitions, 57 changer transitions 0/195 dead transitions. [2024-06-28 03:55:24,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 195 transitions, 2220 flow [2024-06-28 03:55:24,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:55:24,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:55:24,894 INFO L175 Difference]: Start difference. First operand has 130 places, 161 transitions, 1678 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:55:24,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 195 transitions, 2220 flow [2024-06-28 03:55:24,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 195 transitions, 2167 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:24,960 INFO L231 Difference]: Finished difference. Result has 137 places, 164 transitions, 1818 flow [2024-06-28 03:55:24,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1818, PETRI_PLACES=137, PETRI_TRANSITIONS=164} [2024-06-28 03:55:24,961 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 03:55:24,961 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 164 transitions, 1818 flow [2024-06-28 03:55:24,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:24,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:24,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:24,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:55:24,961 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:24,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -452198052, now seen corresponding path program 2 times [2024-06-28 03:55:24,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:24,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748511049] [2024-06-28 03:55:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:25,506 INFO 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 03:55:25,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748511049] [2024-06-28 03:55:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748511049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:25,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791987467] [2024-06-28 03:55:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:25,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:25,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:25,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 164 transitions, 1818 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:25,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:25,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:26,075 INFO L124 PetriNetUnfolderBase]: 1773/2786 cut-off events. [2024-06-28 03:55:26,075 INFO L125 PetriNetUnfolderBase]: For 67051/67051 co-relation queries the response was YES. [2024-06-28 03:55:26,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18305 conditions, 2786 events. 1773/2786 cut-off events. For 67051/67051 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14511 event pairs, 441 based on Foata normal form. 4/2788 useless extension candidates. Maximal degree in co-relation 18241. Up to 2586 conditions per place. [2024-06-28 03:55:26,096 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 146 selfloop transitions, 31 changer transitions 0/182 dead transitions. [2024-06-28 03:55:26,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 182 transitions, 2246 flow [2024-06-28 03:55:26,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:55:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:55:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 03:55:26,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:55:26,097 INFO L175 Difference]: Start difference. First operand has 137 places, 164 transitions, 1818 flow. Second operand 6 states and 120 transitions. [2024-06-28 03:55:26,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 182 transitions, 2246 flow [2024-06-28 03:55:26,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 182 transitions, 2033 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 03:55:26,171 INFO L231 Difference]: Finished difference. Result has 134 places, 164 transitions, 1673 flow [2024-06-28 03:55:26,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1673, PETRI_PLACES=134, PETRI_TRANSITIONS=164} [2024-06-28 03:55:26,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-28 03:55:26,172 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 164 transitions, 1673 flow [2024-06-28 03:55:26,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:26,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:26,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:26,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:55:26,172 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:26,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:26,172 INFO L85 PathProgramCache]: Analyzing trace with hash -447454298, now seen corresponding path program 1 times [2024-06-28 03:55:26,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:26,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978960981] [2024-06-28 03:55:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:26,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:26,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978960981] [2024-06-28 03:55:26,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978960981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:26,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:26,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192745637] [2024-06-28 03:55:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:26,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:26,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 164 transitions, 1673 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:26,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:27,214 INFO L124 PetriNetUnfolderBase]: 1820/2842 cut-off events. [2024-06-28 03:55:27,214 INFO L125 PetriNetUnfolderBase]: For 70505/70505 co-relation queries the response was YES. [2024-06-28 03:55:27,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18559 conditions, 2842 events. 1820/2842 cut-off events. For 70505/70505 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14732 event pairs, 453 based on Foata normal form. 3/2839 useless extension candidates. Maximal degree in co-relation 18496. Up to 2500 conditions per place. [2024-06-28 03:55:27,235 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 149 selfloop transitions, 51 changer transitions 0/205 dead transitions. [2024-06-28 03:55:27,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 205 transitions, 2476 flow [2024-06-28 03:55:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:27,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:55:27,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:55:27,236 INFO L175 Difference]: Start difference. First operand has 134 places, 164 transitions, 1673 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:55:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 205 transitions, 2476 flow [2024-06-28 03:55:27,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 205 transitions, 2372 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:27,308 INFO L231 Difference]: Finished difference. Result has 140 places, 183 transitions, 1951 flow [2024-06-28 03:55:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1951, PETRI_PLACES=140, PETRI_TRANSITIONS=183} [2024-06-28 03:55:27,308 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 98 predicate places. [2024-06-28 03:55:27,308 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 183 transitions, 1951 flow [2024-06-28 03:55:27,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:27,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:27,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:55:27,309 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -629114494, now seen corresponding path program 2 times [2024-06-28 03:55:27,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:27,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871631634] [2024-06-28 03:55:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:27,902 INFO 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 03:55:27,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:27,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871631634] [2024-06-28 03:55:27,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871631634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:27,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:27,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:27,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784244526] [2024-06-28 03:55:27,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:27,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:27,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:27,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:27,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:27,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 183 transitions, 1951 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:27,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:27,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:27,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:28,577 INFO L124 PetriNetUnfolderBase]: 1988/3113 cut-off events. [2024-06-28 03:55:28,577 INFO L125 PetriNetUnfolderBase]: For 84899/84899 co-relation queries the response was YES. [2024-06-28 03:55:28,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21290 conditions, 3113 events. 1988/3113 cut-off events. For 84899/84899 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16544 event pairs, 588 based on Foata normal form. 9/3120 useless extension candidates. Maximal degree in co-relation 21223. Up to 2827 conditions per place. [2024-06-28 03:55:28,597 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 184 selfloop transitions, 36 changer transitions 0/225 dead transitions. [2024-06-28 03:55:28,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 225 transitions, 2799 flow [2024-06-28 03:55:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:55:28,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:55:28,598 INFO L175 Difference]: Start difference. First operand has 140 places, 183 transitions, 1951 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:55:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 225 transitions, 2799 flow [2024-06-28 03:55:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 225 transitions, 2717 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-28 03:55:28,693 INFO L231 Difference]: Finished difference. Result has 148 places, 203 transitions, 2260 flow [2024-06-28 03:55:28,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2260, PETRI_PLACES=148, PETRI_TRANSITIONS=203} [2024-06-28 03:55:28,694 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 106 predicate places. [2024-06-28 03:55:28,694 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 203 transitions, 2260 flow [2024-06-28 03:55:28,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:28,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:28,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:55:28,695 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:28,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -12808568, now seen corresponding path program 3 times [2024-06-28 03:55:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54948639] [2024-06-28 03:55:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:29,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54948639] [2024-06-28 03:55:29,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54948639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:29,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:29,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:29,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042279139] [2024-06-28 03:55:29,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:29,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:29,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:29,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:29,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 203 transitions, 2260 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:29,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:29,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:29,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:29,873 INFO L124 PetriNetUnfolderBase]: 2143/3337 cut-off events. [2024-06-28 03:55:29,873 INFO L125 PetriNetUnfolderBase]: For 96960/96960 co-relation queries the response was YES. [2024-06-28 03:55:29,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23818 conditions, 3337 events. 2143/3337 cut-off events. For 96960/96960 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17927 event pairs, 499 based on Foata normal form. 9/3344 useless extension candidates. Maximal degree in co-relation 23747. Up to 2896 conditions per place. [2024-06-28 03:55:29,897 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 176 selfloop transitions, 69 changer transitions 0/250 dead transitions. [2024-06-28 03:55:29,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 250 transitions, 3190 flow [2024-06-28 03:55:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 03:55:29,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 03:55:29,898 INFO L175 Difference]: Start difference. First operand has 148 places, 203 transitions, 2260 flow. Second operand 7 states and 147 transitions. [2024-06-28 03:55:29,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 250 transitions, 3190 flow [2024-06-28 03:55:30,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 250 transitions, 3056 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:30,033 INFO L231 Difference]: Finished difference. Result has 153 places, 224 transitions, 2671 flow [2024-06-28 03:55:30,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2671, PETRI_PLACES=153, PETRI_TRANSITIONS=224} [2024-06-28 03:55:30,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-28 03:55:30,034 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 224 transitions, 2671 flow [2024-06-28 03:55:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:30,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:30,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:55:30,035 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -10230568, now seen corresponding path program 1 times [2024-06-28 03:55:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:30,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333768888] [2024-06-28 03:55:30,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:30,953 INFO 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 03:55:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:30,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333768888] [2024-06-28 03:55:30,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333768888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:30,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:30,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739323919] [2024-06-28 03:55:30,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:30,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:31,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:31,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 224 transitions, 2671 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:31,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:31,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:31,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:31,595 INFO L124 PetriNetUnfolderBase]: 2138/3336 cut-off events. [2024-06-28 03:55:31,595 INFO L125 PetriNetUnfolderBase]: For 104488/104488 co-relation queries the response was YES. [2024-06-28 03:55:31,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3336 events. 2138/3336 cut-off events. For 104488/104488 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17908 event pairs, 652 based on Foata normal form. 2/3336 useless extension candidates. Maximal degree in co-relation 24932. Up to 3172 conditions per place. [2024-06-28 03:55:31,623 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 216 selfloop transitions, 13 changer transitions 0/234 dead transitions. [2024-06-28 03:55:31,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 234 transitions, 3183 flow [2024-06-28 03:55:31,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:55:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:55:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-28 03:55:31,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2024-06-28 03:55:31,624 INFO L175 Difference]: Start difference. First operand has 153 places, 224 transitions, 2671 flow. Second operand 5 states and 94 transitions. [2024-06-28 03:55:31,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 234 transitions, 3183 flow [2024-06-28 03:55:31,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 234 transitions, 3079 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 03:55:31,771 INFO L231 Difference]: Finished difference. Result has 156 places, 226 transitions, 2634 flow [2024-06-28 03:55:31,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2634, PETRI_PLACES=156, PETRI_TRANSITIONS=226} [2024-06-28 03:55:31,771 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-28 03:55:31,772 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 226 transitions, 2634 flow [2024-06-28 03:55:31,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:31,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:31,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:31,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:55:31,772 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:31,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -416223344, now seen corresponding path program 1 times [2024-06-28 03:55:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:31,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574033712] [2024-06-28 03:55:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:32,469 INFO 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 03:55:32,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574033712] [2024-06-28 03:55:32,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574033712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:32,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627407807] [2024-06-28 03:55:32,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:32,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:32,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:32,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:32,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:32,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:32,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 226 transitions, 2634 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:32,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:32,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:32,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:33,195 INFO L124 PetriNetUnfolderBase]: 2155/3358 cut-off events. [2024-06-28 03:55:33,195 INFO L125 PetriNetUnfolderBase]: For 108714/108714 co-relation queries the response was YES. [2024-06-28 03:55:33,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 3358 events. 2155/3358 cut-off events. For 108714/108714 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18023 event pairs, 522 based on Foata normal form. 4/3356 useless extension candidates. Maximal degree in co-relation 25142. Up to 3039 conditions per place. [2024-06-28 03:55:33,223 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 204 selfloop transitions, 42 changer transitions 0/251 dead transitions. [2024-06-28 03:55:33,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 251 transitions, 3230 flow [2024-06-28 03:55:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:33,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:55:33,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:55:33,225 INFO L175 Difference]: Start difference. First operand has 156 places, 226 transitions, 2634 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:55:33,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 251 transitions, 3230 flow [2024-06-28 03:55:33,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 251 transitions, 3179 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:33,331 INFO L231 Difference]: Finished difference. Result has 161 places, 228 transitions, 2714 flow [2024-06-28 03:55:33,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2714, PETRI_PLACES=161, PETRI_TRANSITIONS=228} [2024-06-28 03:55:33,332 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-28 03:55:33,332 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 228 transitions, 2714 flow [2024-06-28 03:55:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:33,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:33,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:55:33,333 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:33,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1552744090, now seen corresponding path program 2 times [2024-06-28 03:55:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:33,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780818328] [2024-06-28 03:55:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:34,205 INFO 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 03:55:34,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:34,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780818328] [2024-06-28 03:55:34,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780818328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:34,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:34,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:34,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135906384] [2024-06-28 03:55:34,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:34,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:34,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:34,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:34,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:34,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 228 transitions, 2714 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:34,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:34,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:34,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:34,958 INFO L124 PetriNetUnfolderBase]: 2214/3443 cut-off events. [2024-06-28 03:55:34,958 INFO L125 PetriNetUnfolderBase]: For 119696/119696 co-relation queries the response was YES. [2024-06-28 03:55:34,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26367 conditions, 3443 events. 2214/3443 cut-off events. For 119696/119696 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18549 event pairs, 514 based on Foata normal form. 8/3441 useless extension candidates. Maximal degree in co-relation 26290. Up to 2879 conditions per place. [2024-06-28 03:55:34,989 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 193 selfloop transitions, 59 changer transitions 0/257 dead transitions. [2024-06-28 03:55:34,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 257 transitions, 3547 flow [2024-06-28 03:55:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:34,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:34,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:55:34,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 03:55:34,990 INFO L175 Difference]: Start difference. First operand has 161 places, 228 transitions, 2714 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:55:34,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 257 transitions, 3547 flow [2024-06-28 03:55:35,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 257 transitions, 3436 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:35,123 INFO L231 Difference]: Finished difference. Result has 163 places, 235 transitions, 2922 flow [2024-06-28 03:55:35,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2922, PETRI_PLACES=163, PETRI_TRANSITIONS=235} [2024-06-28 03:55:35,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 121 predicate places. [2024-06-28 03:55:35,123 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 235 transitions, 2922 flow [2024-06-28 03:55:35,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:35,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:35,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:35,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:55:35,124 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:35,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash -99374182, now seen corresponding path program 3 times [2024-06-28 03:55:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:35,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101651565] [2024-06-28 03:55:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:35,871 INFO 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 03:55:35,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101651565] [2024-06-28 03:55:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101651565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095843745] [2024-06-28 03:55:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:35,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:35,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 235 transitions, 2922 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:35,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:35,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:35,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:36,593 INFO L124 PetriNetUnfolderBase]: 2206/3431 cut-off events. [2024-06-28 03:55:36,593 INFO L125 PetriNetUnfolderBase]: For 124293/124293 co-relation queries the response was YES. [2024-06-28 03:55:36,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26726 conditions, 3431 events. 2206/3431 cut-off events. For 124293/124293 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18465 event pairs, 370 based on Foata normal form. 4/3425 useless extension candidates. Maximal degree in co-relation 26647. Up to 3167 conditions per place. [2024-06-28 03:55:36,625 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 232 selfloop transitions, 21 changer transitions 0/258 dead transitions. [2024-06-28 03:55:36,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 258 transitions, 3538 flow [2024-06-28 03:55:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:55:36,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564459930313589 [2024-06-28 03:55:36,626 INFO L175 Difference]: Start difference. First operand has 163 places, 235 transitions, 2922 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:55:36,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 258 transitions, 3538 flow [2024-06-28 03:55:36,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 258 transitions, 3385 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 03:55:36,812 INFO L231 Difference]: Finished difference. Result has 166 places, 237 transitions, 2872 flow [2024-06-28 03:55:36,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2872, PETRI_PLACES=166, PETRI_TRANSITIONS=237} [2024-06-28 03:55:36,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 03:55:36,812 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 237 transitions, 2872 flow [2024-06-28 03:55:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:36,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:36,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:36,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:55:36,812 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:36,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:36,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1214916356, now seen corresponding path program 4 times [2024-06-28 03:55:36,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:36,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748518147] [2024-06-28 03:55:36,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:36,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:37,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:37,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748518147] [2024-06-28 03:55:37,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748518147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:37,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:37,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:55:37,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949668192] [2024-06-28 03:55:37,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:37,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:55:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:55:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:55:37,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:37,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 237 transitions, 2872 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:37,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:37,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:37,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:38,316 INFO L124 PetriNetUnfolderBase]: 2190/3407 cut-off events. [2024-06-28 03:55:38,317 INFO L125 PetriNetUnfolderBase]: For 126420/126420 co-relation queries the response was YES. [2024-06-28 03:55:38,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26253 conditions, 3407 events. 2190/3407 cut-off events. For 126420/126420 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18265 event pairs, 487 based on Foata normal form. 8/3405 useless extension candidates. Maximal degree in co-relation 26173. Up to 2993 conditions per place. [2024-06-28 03:55:38,347 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 192 selfloop transitions, 60 changer transitions 0/257 dead transitions. [2024-06-28 03:55:38,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 257 transitions, 3441 flow [2024-06-28 03:55:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:55:38,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738675958188153 [2024-06-28 03:55:38,348 INFO L175 Difference]: Start difference. First operand has 166 places, 237 transitions, 2872 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:55:38,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 257 transitions, 3441 flow [2024-06-28 03:55:38,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 257 transitions, 3312 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:38,582 INFO L231 Difference]: Finished difference. Result has 168 places, 238 transitions, 2887 flow [2024-06-28 03:55:38,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2887, PETRI_PLACES=168, PETRI_TRANSITIONS=238} [2024-06-28 03:55:38,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-28 03:55:38,583 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 238 transitions, 2887 flow [2024-06-28 03:55:38,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:38,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:38,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:55:38,583 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:38,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1214910404, now seen corresponding path program 1 times [2024-06-28 03:55:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026619702] [2024-06-28 03:55:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:39,587 INFO 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 03:55:39,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:39,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026619702] [2024-06-28 03:55:39,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026619702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:39,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:39,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950513387] [2024-06-28 03:55:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:39,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:39,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 238 transitions, 2887 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:39,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:39,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:39,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:40,391 INFO L124 PetriNetUnfolderBase]: 2281/3574 cut-off events. [2024-06-28 03:55:40,391 INFO L125 PetriNetUnfolderBase]: For 144020/144020 co-relation queries the response was YES. [2024-06-28 03:55:40,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27260 conditions, 3574 events. 2281/3574 cut-off events. For 144020/144020 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 19513 event pairs, 456 based on Foata normal form. 32/3596 useless extension candidates. Maximal degree in co-relation 27179. Up to 2854 conditions per place. [2024-06-28 03:55:40,421 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 188 selfloop transitions, 73 changer transitions 0/266 dead transitions. [2024-06-28 03:55:40,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 266 transitions, 3585 flow [2024-06-28 03:55:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:55:40,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:55:40,422 INFO L175 Difference]: Start difference. First operand has 168 places, 238 transitions, 2887 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:55:40,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 266 transitions, 3585 flow [2024-06-28 03:55:40,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 266 transitions, 3468 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:55:40,594 INFO L231 Difference]: Finished difference. Result has 171 places, 240 transitions, 3003 flow [2024-06-28 03:55:40,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3003, PETRI_PLACES=171, PETRI_TRANSITIONS=240} [2024-06-28 03:55:40,594 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 03:55:40,594 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 240 transitions, 3003 flow [2024-06-28 03:55:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:40,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:40,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:55:40,595 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:40,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash 239434460, now seen corresponding path program 2 times [2024-06-28 03:55:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347333698] [2024-06-28 03:55:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:40,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:41,581 INFO 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 03:55:41,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:41,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347333698] [2024-06-28 03:55:41,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347333698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409028049] [2024-06-28 03:55:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:41,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:41,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:41,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:41,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 240 transitions, 3003 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:41,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:41,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:41,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:42,493 INFO L124 PetriNetUnfolderBase]: 2490/3943 cut-off events. [2024-06-28 03:55:42,494 INFO L125 PetriNetUnfolderBase]: For 158082/158082 co-relation queries the response was YES. [2024-06-28 03:55:42,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30483 conditions, 3943 events. 2490/3943 cut-off events. For 158082/158082 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 22351 event pairs, 475 based on Foata normal form. 12/3949 useless extension candidates. Maximal degree in co-relation 30401. Up to 3092 conditions per place. [2024-06-28 03:55:42,533 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 203 selfloop transitions, 77 changer transitions 0/285 dead transitions. [2024-06-28 03:55:42,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 285 transitions, 4005 flow [2024-06-28 03:55:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:42,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:55:42,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48292682926829267 [2024-06-28 03:55:42,535 INFO L175 Difference]: Start difference. First operand has 171 places, 240 transitions, 3003 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:55:42,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 285 transitions, 4005 flow [2024-06-28 03:55:42,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 285 transitions, 3846 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:42,766 INFO L231 Difference]: Finished difference. Result has 176 places, 244 transitions, 3163 flow [2024-06-28 03:55:42,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3163, PETRI_PLACES=176, PETRI_TRANSITIONS=244} [2024-06-28 03:55:42,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 03:55:42,766 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 244 transitions, 3163 flow [2024-06-28 03:55:42,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:42,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:42,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:42,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:55:42,767 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:42,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 239167550, now seen corresponding path program 3 times [2024-06-28 03:55:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883167473] [2024-06-28 03:55:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:42,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:43,751 INFO 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 03:55:43,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:43,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883167473] [2024-06-28 03:55:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883167473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:43,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:43,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:43,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461521234] [2024-06-28 03:55:43,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:43,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:43,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:43,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:43,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:43,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 244 transitions, 3163 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:43,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:43,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:43,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:44,670 INFO L124 PetriNetUnfolderBase]: 2462/3889 cut-off events. [2024-06-28 03:55:44,670 INFO L125 PetriNetUnfolderBase]: For 158802/158802 co-relation queries the response was YES. [2024-06-28 03:55:44,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29886 conditions, 3889 events. 2462/3889 cut-off events. For 158802/158802 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21869 event pairs, 566 based on Foata normal form. 16/3899 useless extension candidates. Maximal degree in co-relation 29802. Up to 3431 conditions per place. [2024-06-28 03:55:44,707 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 220 selfloop transitions, 53 changer transitions 0/278 dead transitions. [2024-06-28 03:55:44,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 278 transitions, 3847 flow [2024-06-28 03:55:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:44,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:55:44,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-28 03:55:44,709 INFO L175 Difference]: Start difference. First operand has 176 places, 244 transitions, 3163 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:55:44,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 278 transitions, 3847 flow [2024-06-28 03:55:44,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 278 transitions, 3717 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:44,956 INFO L231 Difference]: Finished difference. Result has 180 places, 244 transitions, 3149 flow [2024-06-28 03:55:44,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3033, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3149, PETRI_PLACES=180, PETRI_TRANSITIONS=244} [2024-06-28 03:55:44,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 138 predicate places. [2024-06-28 03:55:44,956 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 244 transitions, 3149 flow [2024-06-28 03:55:44,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:44,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:44,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:44,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:55:44,957 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:44,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:44,957 INFO L85 PathProgramCache]: Analyzing trace with hash -515942090, now seen corresponding path program 1 times [2024-06-28 03:55:44,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:44,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010248953] [2024-06-28 03:55:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:44,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:45,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:45,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:45,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010248953] [2024-06-28 03:55:45,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010248953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:45,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:45,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:45,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984005553] [2024-06-28 03:55:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:45,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:45,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:45,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:45,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 244 transitions, 3149 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:45,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:45,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:45,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:46,232 INFO L124 PetriNetUnfolderBase]: 2530/3994 cut-off events. [2024-06-28 03:55:46,232 INFO L125 PetriNetUnfolderBase]: For 161048/161048 co-relation queries the response was YES. [2024-06-28 03:55:46,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31007 conditions, 3994 events. 2530/3994 cut-off events. For 161048/161048 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22530 event pairs, 555 based on Foata normal form. 2/3992 useless extension candidates. Maximal degree in co-relation 30921. Up to 3740 conditions per place. [2024-06-28 03:55:46,266 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 235 selfloop transitions, 44 changer transitions 0/284 dead transitions. [2024-06-28 03:55:46,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 4253 flow [2024-06-28 03:55:46,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:55:46,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420731707317073 [2024-06-28 03:55:46,268 INFO L175 Difference]: Start difference. First operand has 180 places, 244 transitions, 3149 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:55:46,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 4253 flow [2024-06-28 03:55:46,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 284 transitions, 4135 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:55:46,479 INFO L231 Difference]: Finished difference. Result has 182 places, 264 transitions, 3559 flow [2024-06-28 03:55:46,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3559, PETRI_PLACES=182, PETRI_TRANSITIONS=264} [2024-06-28 03:55:46,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2024-06-28 03:55:46,480 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 264 transitions, 3559 flow [2024-06-28 03:55:46,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:46,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:46,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:55:46,481 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:46,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -151240180, now seen corresponding path program 2 times [2024-06-28 03:55:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:46,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102296941] [2024-06-28 03:55:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:46,967 INFO 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 03:55:46,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:46,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102296941] [2024-06-28 03:55:46,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102296941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:46,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:46,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:46,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858388251] [2024-06-28 03:55:46,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:46,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:46,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:47,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:47,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 264 transitions, 3559 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:47,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:47,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:47,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:47,699 INFO L124 PetriNetUnfolderBase]: 2534/4013 cut-off events. [2024-06-28 03:55:47,699 INFO L125 PetriNetUnfolderBase]: For 167848/167848 co-relation queries the response was YES. [2024-06-28 03:55:47,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31242 conditions, 4013 events. 2534/4013 cut-off events. For 167848/167848 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 22739 event pairs, 557 based on Foata normal form. 4/4015 useless extension candidates. Maximal degree in co-relation 31153. Up to 3792 conditions per place. [2024-06-28 03:55:47,736 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 245 selfloop transitions, 32 changer transitions 0/282 dead transitions. [2024-06-28 03:55:47,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 4230 flow [2024-06-28 03:55:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:55:47,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445993031358885 [2024-06-28 03:55:47,737 INFO L175 Difference]: Start difference. First operand has 182 places, 264 transitions, 3559 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:55:47,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 4230 flow [2024-06-28 03:55:47,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 282 transitions, 4158 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:47,995 INFO L231 Difference]: Finished difference. Result has 186 places, 267 transitions, 3630 flow [2024-06-28 03:55:47,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3630, PETRI_PLACES=186, PETRI_TRANSITIONS=267} [2024-06-28 03:55:47,996 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 144 predicate places. [2024-06-28 03:55:47,996 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 267 transitions, 3630 flow [2024-06-28 03:55:47,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:47,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:47,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:47,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:55:47,996 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:47,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -851786032, now seen corresponding path program 4 times [2024-06-28 03:55:47,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:47,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988725119] [2024-06-28 03:55:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:47,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:48,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988725119] [2024-06-28 03:55:48,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988725119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:48,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:48,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771846549] [2024-06-28 03:55:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:48,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:48,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:49,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:49,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 267 transitions, 3630 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:49,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:49,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:50,022 INFO L124 PetriNetUnfolderBase]: 2661/4233 cut-off events. [2024-06-28 03:55:50,022 INFO L125 PetriNetUnfolderBase]: For 192589/192589 co-relation queries the response was YES. [2024-06-28 03:55:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33564 conditions, 4233 events. 2661/4233 cut-off events. For 192589/192589 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24444 event pairs, 589 based on Foata normal form. 12/4238 useless extension candidates. Maximal degree in co-relation 33473. Up to 3438 conditions per place. [2024-06-28 03:55:50,059 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 238 selfloop transitions, 65 changer transitions 0/308 dead transitions. [2024-06-28 03:55:50,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 308 transitions, 4620 flow [2024-06-28 03:55:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:55:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:55:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:55:50,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48048780487804876 [2024-06-28 03:55:50,060 INFO L175 Difference]: Start difference. First operand has 186 places, 267 transitions, 3630 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:55:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 308 transitions, 4620 flow [2024-06-28 03:55:50,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 308 transitions, 4505 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:50,342 INFO L231 Difference]: Finished difference. Result has 193 places, 269 transitions, 3729 flow [2024-06-28 03:55:50,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3729, PETRI_PLACES=193, PETRI_TRANSITIONS=269} [2024-06-28 03:55:50,343 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-06-28 03:55:50,343 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 269 transitions, 3729 flow [2024-06-28 03:55:50,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:50,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:50,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:50,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:55:50,343 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:50,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1539149250, now seen corresponding path program 5 times [2024-06-28 03:55:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:50,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358633490] [2024-06-28 03:55:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:50,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:51,283 INFO 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 03:55:51,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:51,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358633490] [2024-06-28 03:55:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358633490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:51,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534015864] [2024-06-28 03:55:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:51,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:51,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 269 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:51,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:51,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:51,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:52,407 INFO L124 PetriNetUnfolderBase]: 2633/4189 cut-off events. [2024-06-28 03:55:52,407 INFO L125 PetriNetUnfolderBase]: For 195321/195321 co-relation queries the response was YES. [2024-06-28 03:55:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33081 conditions, 4189 events. 2633/4189 cut-off events. For 195321/195321 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24174 event pairs, 581 based on Foata normal form. 16/4199 useless extension candidates. Maximal degree in co-relation 32989. Up to 3624 conditions per place. [2024-06-28 03:55:52,448 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 236 selfloop transitions, 66 changer transitions 0/307 dead transitions. [2024-06-28 03:55:52,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 307 transitions, 4483 flow [2024-06-28 03:55:52,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:55:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:55:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 03:55:52,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656319290465632 [2024-06-28 03:55:52,449 INFO L175 Difference]: Start difference. First operand has 193 places, 269 transitions, 3729 flow. Second operand 11 states and 210 transitions. [2024-06-28 03:55:52,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 307 transitions, 4483 flow [2024-06-28 03:55:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 307 transitions, 4373 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:55:52,778 INFO L231 Difference]: Finished difference. Result has 198 places, 269 transitions, 3762 flow [2024-06-28 03:55:52,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3762, PETRI_PLACES=198, PETRI_TRANSITIONS=269} [2024-06-28 03:55:52,778 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 156 predicate places. [2024-06-28 03:55:52,779 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 269 transitions, 3762 flow [2024-06-28 03:55:52,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:52,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:52,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:52,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:55:52,779 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:52,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash -538086802, now seen corresponding path program 6 times [2024-06-28 03:55:52,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:52,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878664710] [2024-06-28 03:55:52,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:53,689 INFO 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 03:55:53,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:53,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878664710] [2024-06-28 03:55:53,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878664710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:53,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:53,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:55:53,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933605053] [2024-06-28 03:55:53,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:53,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:55:53,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:53,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:55:53,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:55:53,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:53,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 269 transitions, 3762 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:53,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:53,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:53,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:54,600 INFO L124 PetriNetUnfolderBase]: 2649/4221 cut-off events. [2024-06-28 03:55:54,600 INFO L125 PetriNetUnfolderBase]: For 197600/197600 co-relation queries the response was YES. [2024-06-28 03:55:54,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33299 conditions, 4221 events. 2649/4221 cut-off events. For 197600/197600 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24459 event pairs, 459 based on Foata normal form. 12/4227 useless extension candidates. Maximal degree in co-relation 33205. Up to 2812 conditions per place. [2024-06-28 03:55:54,643 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 231 selfloop transitions, 72 changer transitions 0/308 dead transitions. [2024-06-28 03:55:54,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 308 transitions, 4728 flow [2024-06-28 03:55:54,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:55:54,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:55:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:55:54,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 03:55:54,644 INFO L175 Difference]: Start difference. First operand has 198 places, 269 transitions, 3762 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:55:54,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 308 transitions, 4728 flow [2024-06-28 03:55:54,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 308 transitions, 4587 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:55:54,934 INFO L231 Difference]: Finished difference. Result has 197 places, 270 transitions, 3813 flow [2024-06-28 03:55:54,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3621, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3813, PETRI_PLACES=197, PETRI_TRANSITIONS=270} [2024-06-28 03:55:54,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 03:55:54,935 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 270 transitions, 3813 flow [2024-06-28 03:55:54,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:55:54,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:54,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:54,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:55:54,935 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:54,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:54,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1474225940, now seen corresponding path program 3 times [2024-06-28 03:55:54,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:54,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477465317] [2024-06-28 03:55:54,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:55,502 INFO 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 03:55:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477465317] [2024-06-28 03:55:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477465317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:55,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:55,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:55,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008283211] [2024-06-28 03:55:55,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:55,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:55,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:55,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:55,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 270 transitions, 3813 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:55,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:55,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:55,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:56,252 INFO L124 PetriNetUnfolderBase]: 2669/4260 cut-off events. [2024-06-28 03:55:56,252 INFO L125 PetriNetUnfolderBase]: For 202178/202178 co-relation queries the response was YES. [2024-06-28 03:55:56,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33852 conditions, 4260 events. 2669/4260 cut-off events. For 202178/202178 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 24748 event pairs, 596 based on Foata normal form. 4/4258 useless extension candidates. Maximal degree in co-relation 33757. Up to 3693 conditions per place. [2024-06-28 03:55:56,295 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 213 selfloop transitions, 81 changer transitions 0/299 dead transitions. [2024-06-28 03:55:56,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 299 transitions, 4804 flow [2024-06-28 03:55:56,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:55:56,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:55:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:55:56,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4808362369337979 [2024-06-28 03:55:56,296 INFO L175 Difference]: Start difference. First operand has 197 places, 270 transitions, 3813 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:55:56,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 299 transitions, 4804 flow [2024-06-28 03:55:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 299 transitions, 4621 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:55:56,619 INFO L231 Difference]: Finished difference. Result has 197 places, 279 transitions, 4010 flow [2024-06-28 03:55:56,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4010, PETRI_PLACES=197, PETRI_TRANSITIONS=279} [2024-06-28 03:55:56,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 03:55:56,620 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 279 transitions, 4010 flow [2024-06-28 03:55:56,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:56,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:56,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:56,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:55:56,620 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:56,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:56,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1292087724, now seen corresponding path program 4 times [2024-06-28 03:55:56,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:56,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618340115] [2024-06-28 03:55:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:56,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:57,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618340115] [2024-06-28 03:55:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618340115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616650456] [2024-06-28 03:55:57,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:57,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:57,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 279 transitions, 4010 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:57,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:57,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:57,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:57,995 INFO L124 PetriNetUnfolderBase]: 2621/4193 cut-off events. [2024-06-28 03:55:57,995 INFO L125 PetriNetUnfolderBase]: For 196721/196721 co-relation queries the response was YES. [2024-06-28 03:55:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32897 conditions, 4193 events. 2621/4193 cut-off events. For 196721/196721 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24372 event pairs, 572 based on Foata normal form. 12/4203 useless extension candidates. Maximal degree in co-relation 32801. Up to 3881 conditions per place. [2024-06-28 03:55:58,036 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 253 selfloop transitions, 41 changer transitions 0/299 dead transitions. [2024-06-28 03:55:58,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 299 transitions, 4702 flow [2024-06-28 03:55:58,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:55:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:55:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:55:58,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2024-06-28 03:55:58,039 INFO L175 Difference]: Start difference. First operand has 197 places, 279 transitions, 4010 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:55:58,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 299 transitions, 4702 flow [2024-06-28 03:55:58,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 299 transitions, 4487 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 03:55:58,374 INFO L231 Difference]: Finished difference. Result has 202 places, 279 transitions, 3892 flow [2024-06-28 03:55:58,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3796, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3892, PETRI_PLACES=202, PETRI_TRANSITIONS=279} [2024-06-28 03:55:58,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2024-06-28 03:55:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 279 transitions, 3892 flow [2024-06-28 03:55:58,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:58,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:55:58,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:55:58,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:55:58,376 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:55:58,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:55:58,376 INFO L85 PathProgramCache]: Analyzing trace with hash -325026514, now seen corresponding path program 5 times [2024-06-28 03:55:58,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:55:58,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382202342] [2024-06-28 03:55:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:55:58,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:55:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:55:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:55:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:55:58,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382202342] [2024-06-28 03:55:58,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382202342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:55:58,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:55:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:55:58,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672849841] [2024-06-28 03:55:58,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:55:58,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:55:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:55:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:55:58,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:55:58,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:55:58,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 279 transitions, 3892 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:55:58,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:55:58,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:55:58,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:55:59,688 INFO L124 PetriNetUnfolderBase]: 2635/4228 cut-off events. [2024-06-28 03:55:59,688 INFO L125 PetriNetUnfolderBase]: For 195871/195871 co-relation queries the response was YES. [2024-06-28 03:55:59,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32736 conditions, 4228 events. 2635/4228 cut-off events. For 195871/195871 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 24706 event pairs, 572 based on Foata normal form. 6/4232 useless extension candidates. Maximal degree in co-relation 32639. Up to 3923 conditions per place. [2024-06-28 03:55:59,733 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 249 selfloop transitions, 46 changer transitions 0/300 dead transitions. [2024-06-28 03:55:59,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 300 transitions, 4610 flow [2024-06-28 03:55:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:55:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:55:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 03:55:59,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959349593495935 [2024-06-28 03:55:59,734 INFO L175 Difference]: Start difference. First operand has 202 places, 279 transitions, 3892 flow. Second operand 6 states and 122 transitions. [2024-06-28 03:55:59,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 300 transitions, 4610 flow [2024-06-28 03:56:00,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 300 transitions, 4502 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:00,104 INFO L231 Difference]: Finished difference. Result has 201 places, 282 transitions, 3970 flow [2024-06-28 03:56:00,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3970, PETRI_PLACES=201, PETRI_TRANSITIONS=282} [2024-06-28 03:56:00,105 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 03:56:00,105 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 282 transitions, 3970 flow [2024-06-28 03:56:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:56:00,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:00,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:00,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:56:00,106 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:00,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:00,106 INFO L85 PathProgramCache]: Analyzing trace with hash -324789364, now seen corresponding path program 6 times [2024-06-28 03:56:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:00,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155155408] [2024-06-28 03:56:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:00,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:00,658 INFO 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 03:56:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155155408] [2024-06-28 03:56:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155155408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:00,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:00,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686364779] [2024-06-28 03:56:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:00,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:00,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:00,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:00,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 282 transitions, 3970 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:56:00,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:00,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:00,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:01,457 INFO L124 PetriNetUnfolderBase]: 2587/4157 cut-off events. [2024-06-28 03:56:01,457 INFO L125 PetriNetUnfolderBase]: For 198499/198499 co-relation queries the response was YES. [2024-06-28 03:56:01,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31954 conditions, 4157 events. 2587/4157 cut-off events. For 198499/198499 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24277 event pairs, 572 based on Foata normal form. 12/4167 useless extension candidates. Maximal degree in co-relation 31856. Up to 3821 conditions per place. [2024-06-28 03:56:01,498 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 250 selfloop transitions, 42 changer transitions 0/297 dead transitions. [2024-06-28 03:56:01,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 297 transitions, 4627 flow [2024-06-28 03:56:01,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:56:01,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42005420054200543 [2024-06-28 03:56:01,499 INFO L175 Difference]: Start difference. First operand has 201 places, 282 transitions, 3970 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:56:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 297 transitions, 4627 flow [2024-06-28 03:56:01,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 297 transitions, 4469 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:01,841 INFO L231 Difference]: Finished difference. Result has 207 places, 283 transitions, 3941 flow [2024-06-28 03:56:01,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3812, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3941, PETRI_PLACES=207, PETRI_TRANSITIONS=283} [2024-06-28 03:56:01,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-28 03:56:01,842 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 283 transitions, 3941 flow [2024-06-28 03:56:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 03:56:01,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:01,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:56:01,842 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:01,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1266424436, now seen corresponding path program 7 times [2024-06-28 03:56:01,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742535670] [2024-06-28 03:56:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:02,370 INFO 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 03:56:02,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:02,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742535670] [2024-06-28 03:56:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742535670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:02,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:02,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:02,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043362553] [2024-06-28 03:56:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:02,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:02,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 283 transitions, 3941 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:56:02,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:02,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:02,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:03,310 INFO L124 PetriNetUnfolderBase]: 2606/4187 cut-off events. [2024-06-28 03:56:03,310 INFO L125 PetriNetUnfolderBase]: For 192531/192531 co-relation queries the response was YES. [2024-06-28 03:56:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32066 conditions, 4187 events. 2606/4187 cut-off events. For 192531/192531 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24485 event pairs, 566 based on Foata normal form. 2/4187 useless extension candidates. Maximal degree in co-relation 31966. Up to 3891 conditions per place. [2024-06-28 03:56:03,350 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 261 selfloop transitions, 51 changer transitions 0/317 dead transitions. [2024-06-28 03:56:03,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 317 transitions, 4778 flow [2024-06-28 03:56:03,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:03,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:03,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:56:03,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:56:03,351 INFO L175 Difference]: Start difference. First operand has 207 places, 283 transitions, 3941 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:56:03,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 317 transitions, 4778 flow [2024-06-28 03:56:03,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 317 transitions, 4604 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:03,660 INFO L231 Difference]: Finished difference. Result has 209 places, 293 transitions, 4032 flow [2024-06-28 03:56:03,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4032, PETRI_PLACES=209, PETRI_TRANSITIONS=293} [2024-06-28 03:56:03,660 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-28 03:56:03,660 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 293 transitions, 4032 flow [2024-06-28 03:56:03,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 03:56:03,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:03,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:56:03,660 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:03,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1968479242, now seen corresponding path program 1 times [2024-06-28 03:56:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:03,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195524026] [2024-06-28 03:56:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:03,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:04,346 INFO 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 03:56:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195524026] [2024-06-28 03:56:04,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195524026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:04,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:04,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844305978] [2024-06-28 03:56:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:04,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:04,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:04,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:04,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 293 transitions, 4032 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:04,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:04,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:04,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:05,195 INFO L124 PetriNetUnfolderBase]: 2637/4225 cut-off events. [2024-06-28 03:56:05,196 INFO L125 PetriNetUnfolderBase]: For 201969/201969 co-relation queries the response was YES. [2024-06-28 03:56:05,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32426 conditions, 4225 events. 2637/4225 cut-off events. For 201969/201969 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24632 event pairs, 569 based on Foata normal form. 3/4221 useless extension candidates. Maximal degree in co-relation 32327. Up to 3589 conditions per place. [2024-06-28 03:56:05,238 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 204 selfloop transitions, 120 changer transitions 0/329 dead transitions. [2024-06-28 03:56:05,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 329 transitions, 5224 flow [2024-06-28 03:56:05,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 03:56:05,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 03:56:05,239 INFO L175 Difference]: Start difference. First operand has 209 places, 293 transitions, 4032 flow. Second operand 9 states and 175 transitions. [2024-06-28 03:56:05,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 329 transitions, 5224 flow [2024-06-28 03:56:05,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 329 transitions, 5130 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:05,613 INFO L231 Difference]: Finished difference. Result has 216 places, 303 transitions, 4386 flow [2024-06-28 03:56:05,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=3938, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4386, PETRI_PLACES=216, PETRI_TRANSITIONS=303} [2024-06-28 03:56:05,614 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-28 03:56:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 303 transitions, 4386 flow [2024-06-28 03:56:05,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:05,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:05,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:05,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:56:05,614 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:05,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:05,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1968569607, now seen corresponding path program 1 times [2024-06-28 03:56:05,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:05,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719899196] [2024-06-28 03:56:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:05,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719899196] [2024-06-28 03:56:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719899196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:06,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:06,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:06,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094149309] [2024-06-28 03:56:06,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:06,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:06,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:06,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:06,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 303 transitions, 4386 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:06,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:06,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:06,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:07,077 INFO L124 PetriNetUnfolderBase]: 2755/4382 cut-off events. [2024-06-28 03:56:07,077 INFO L125 PetriNetUnfolderBase]: For 232919/232919 co-relation queries the response was YES. [2024-06-28 03:56:07,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35634 conditions, 4382 events. 2755/4382 cut-off events. For 232919/232919 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25498 event pairs, 550 based on Foata normal form. 6/4382 useless extension candidates. Maximal degree in co-relation 35533. Up to 3448 conditions per place. [2024-06-28 03:56:07,121 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 211 selfloop transitions, 128 changer transitions 0/344 dead transitions. [2024-06-28 03:56:07,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 344 transitions, 5678 flow [2024-06-28 03:56:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 03:56:07,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:56:07,123 INFO L175 Difference]: Start difference. First operand has 216 places, 303 transitions, 4386 flow. Second operand 8 states and 160 transitions. [2024-06-28 03:56:07,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 344 transitions, 5678 flow [2024-06-28 03:56:07,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 344 transitions, 5439 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:07,548 INFO L231 Difference]: Finished difference. Result has 221 places, 319 transitions, 4829 flow [2024-06-28 03:56:07,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4829, PETRI_PLACES=221, PETRI_TRANSITIONS=319} [2024-06-28 03:56:07,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-28 03:56:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 319 transitions, 4829 flow [2024-06-28 03:56:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:07,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:56:07,549 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:07,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1972288677, now seen corresponding path program 2 times [2024-06-28 03:56:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057998732] [2024-06-28 03:56:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:08,209 INFO 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 03:56:08,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057998732] [2024-06-28 03:56:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057998732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:08,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:08,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140191486] [2024-06-28 03:56:08,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:08,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:08,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:08,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:08,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 319 transitions, 4829 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:08,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:08,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:08,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:09,227 INFO L124 PetriNetUnfolderBase]: 2881/4576 cut-off events. [2024-06-28 03:56:09,228 INFO L125 PetriNetUnfolderBase]: For 265233/265233 co-relation queries the response was YES. [2024-06-28 03:56:09,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39520 conditions, 4576 events. 2881/4576 cut-off events. For 265233/265233 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26809 event pairs, 571 based on Foata normal form. 6/4580 useless extension candidates. Maximal degree in co-relation 39415. Up to 4136 conditions per place. [2024-06-28 03:56:09,278 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 297 selfloop transitions, 52 changer transitions 0/354 dead transitions. [2024-06-28 03:56:09,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 354 transitions, 6118 flow [2024-06-28 03:56:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:56:09,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:56:09,279 INFO L175 Difference]: Start difference. First operand has 221 places, 319 transitions, 4829 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:56:09,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 354 transitions, 6118 flow [2024-06-28 03:56:09,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 354 transitions, 5975 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:09,788 INFO L231 Difference]: Finished difference. Result has 229 places, 330 transitions, 5090 flow [2024-06-28 03:56:09,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4704, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5090, PETRI_PLACES=229, PETRI_TRANSITIONS=330} [2024-06-28 03:56:09,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-28 03:56:09,788 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 330 transitions, 5090 flow [2024-06-28 03:56:09,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:09,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:09,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:09,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:56:09,789 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:09,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:09,789 INFO L85 PathProgramCache]: Analyzing trace with hash -982460924, now seen corresponding path program 2 times [2024-06-28 03:56:09,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:09,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816576727] [2024-06-28 03:56:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:09,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:10,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:10,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816576727] [2024-06-28 03:56:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816576727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:10,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:10,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824600157] [2024-06-28 03:56:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:10,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:10,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:10,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 330 transitions, 5090 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:10,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:10,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:10,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:11,585 INFO L124 PetriNetUnfolderBase]: 2911/4622 cut-off events. [2024-06-28 03:56:11,585 INFO L125 PetriNetUnfolderBase]: For 267772/267772 co-relation queries the response was YES. [2024-06-28 03:56:11,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39309 conditions, 4622 events. 2911/4622 cut-off events. For 267772/267772 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27141 event pairs, 594 based on Foata normal form. 6/4626 useless extension candidates. Maximal degree in co-relation 39200. Up to 4294 conditions per place. [2024-06-28 03:56:11,637 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 315 selfloop transitions, 53 changer transitions 0/373 dead transitions. [2024-06-28 03:56:11,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 373 transitions, 6362 flow [2024-06-28 03:56:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:56:11,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 03:56:11,639 INFO L175 Difference]: Start difference. First operand has 229 places, 330 transitions, 5090 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:56:11,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 373 transitions, 6362 flow [2024-06-28 03:56:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 373 transitions, 6235 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:12,197 INFO L231 Difference]: Finished difference. Result has 237 places, 353 transitions, 5519 flow [2024-06-28 03:56:12,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=4963, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5519, PETRI_PLACES=237, PETRI_TRANSITIONS=353} [2024-06-28 03:56:12,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-06-28 03:56:12,197 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 353 transitions, 5519 flow [2024-06-28 03:56:12,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:12,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:12,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:12,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:56:12,198 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:12,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:12,198 INFO L85 PathProgramCache]: Analyzing trace with hash -324780281, now seen corresponding path program 3 times [2024-06-28 03:56:12,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:12,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281122451] [2024-06-28 03:56:12,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:12,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:12,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281122451] [2024-06-28 03:56:12,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281122451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:12,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:12,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015277596] [2024-06-28 03:56:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:12,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:12,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 353 transitions, 5519 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:12,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:12,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:12,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:13,897 INFO L124 PetriNetUnfolderBase]: 3037/4805 cut-off events. [2024-06-28 03:56:13,897 INFO L125 PetriNetUnfolderBase]: For 295456/295456 co-relation queries the response was YES. [2024-06-28 03:56:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42358 conditions, 4805 events. 3037/4805 cut-off events. For 295456/295456 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28314 event pairs, 601 based on Foata normal form. 6/4809 useless extension candidates. Maximal degree in co-relation 42244. Up to 4127 conditions per place. [2024-06-28 03:56:13,957 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 293 selfloop transitions, 97 changer transitions 0/395 dead transitions. [2024-06-28 03:56:13,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 395 transitions, 6936 flow [2024-06-28 03:56:13,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:13,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 03:56:13,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2024-06-28 03:56:13,958 INFO L175 Difference]: Start difference. First operand has 237 places, 353 transitions, 5519 flow. Second operand 8 states and 165 transitions. [2024-06-28 03:56:13,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 395 transitions, 6936 flow [2024-06-28 03:56:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 395 transitions, 6789 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:14,488 INFO L231 Difference]: Finished difference. Result has 244 places, 366 transitions, 5956 flow [2024-06-28 03:56:14,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5372, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5956, PETRI_PLACES=244, PETRI_TRANSITIONS=366} [2024-06-28 03:56:14,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 202 predicate places. [2024-06-28 03:56:14,489 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 366 transitions, 5956 flow [2024-06-28 03:56:14,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:14,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:14,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:14,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:56:14,490 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:14,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:14,490 INFO L85 PathProgramCache]: Analyzing trace with hash -317155924, now seen corresponding path program 1 times [2024-06-28 03:56:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:14,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168351360] [2024-06-28 03:56:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:15,178 INFO 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 03:56:15,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:15,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168351360] [2024-06-28 03:56:15,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168351360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:15,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:15,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248819184] [2024-06-28 03:56:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:15,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:15,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 366 transitions, 5956 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:15,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:15,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:15,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:16,167 INFO L124 PetriNetUnfolderBase]: 3034/4794 cut-off events. [2024-06-28 03:56:16,167 INFO L125 PetriNetUnfolderBase]: For 300096/300096 co-relation queries the response was YES. [2024-06-28 03:56:16,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42960 conditions, 4794 events. 3034/4794 cut-off events. For 300096/300096 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28248 event pairs, 619 based on Foata normal form. 1/4793 useless extension candidates. Maximal degree in co-relation 42842. Up to 4531 conditions per place. [2024-06-28 03:56:16,222 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 342 selfloop transitions, 30 changer transitions 0/377 dead transitions. [2024-06-28 03:56:16,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 377 transitions, 6738 flow [2024-06-28 03:56:16,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-28 03:56:16,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 03:56:16,223 INFO L175 Difference]: Start difference. First operand has 244 places, 366 transitions, 5956 flow. Second operand 5 states and 100 transitions. [2024-06-28 03:56:16,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 377 transitions, 6738 flow [2024-06-28 03:56:16,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 377 transitions, 6593 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:16,916 INFO L231 Difference]: Finished difference. Result has 247 places, 366 transitions, 5895 flow [2024-06-28 03:56:16,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5895, PETRI_PLACES=247, PETRI_TRANSITIONS=366} [2024-06-28 03:56:16,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 205 predicate places. [2024-06-28 03:56:16,917 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 366 transitions, 5895 flow [2024-06-28 03:56:16,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:16,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:16,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:56:16,917 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:16,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash -324774701, now seen corresponding path program 4 times [2024-06-28 03:56:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:16,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419893819] [2024-06-28 03:56:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:16,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:17,645 INFO 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 03:56:17,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:17,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419893819] [2024-06-28 03:56:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419893819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:17,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:17,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:17,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711269687] [2024-06-28 03:56:17,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:17,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:17,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:17,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 366 transitions, 5895 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:17,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:17,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:17,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:18,767 INFO L124 PetriNetUnfolderBase]: 3120/4928 cut-off events. [2024-06-28 03:56:18,768 INFO L125 PetriNetUnfolderBase]: For 323408/323408 co-relation queries the response was YES. [2024-06-28 03:56:18,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44450 conditions, 4928 events. 3120/4928 cut-off events. For 323408/323408 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 29165 event pairs, 626 based on Foata normal form. 6/4932 useless extension candidates. Maximal degree in co-relation 44330. Up to 4513 conditions per place. [2024-06-28 03:56:18,826 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 342 selfloop transitions, 48 changer transitions 0/395 dead transitions. [2024-06-28 03:56:18,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 395 transitions, 7073 flow [2024-06-28 03:56:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:56:18,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2024-06-28 03:56:18,827 INFO L175 Difference]: Start difference. First operand has 247 places, 366 transitions, 5895 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:56:18,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 395 transitions, 7073 flow [2024-06-28 03:56:19,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 395 transitions, 7013 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:19,458 INFO L231 Difference]: Finished difference. Result has 252 places, 373 transitions, 6141 flow [2024-06-28 03:56:19,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5835, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6141, PETRI_PLACES=252, PETRI_TRANSITIONS=373} [2024-06-28 03:56:19,459 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 210 predicate places. [2024-06-28 03:56:19,459 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 373 transitions, 6141 flow [2024-06-28 03:56:19,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:19,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:19,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:19,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:56:19,460 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:19,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:19,460 INFO L85 PathProgramCache]: Analyzing trace with hash -397064252, now seen corresponding path program 3 times [2024-06-28 03:56:19,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:19,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914057379] [2024-06-28 03:56:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:20,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:20,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:20,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914057379] [2024-06-28 03:56:20,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914057379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:20,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:20,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:20,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264713127] [2024-06-28 03:56:20,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:20,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:20,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:20,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:20,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 373 transitions, 6141 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:20,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:20,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:21,436 INFO L124 PetriNetUnfolderBase]: 3170/5010 cut-off events. [2024-06-28 03:56:21,436 INFO L125 PetriNetUnfolderBase]: For 337694/337694 co-relation queries the response was YES. [2024-06-28 03:56:21,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45709 conditions, 5010 events. 3170/5010 cut-off events. For 337694/337694 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 29757 event pairs, 641 based on Foata normal form. 6/5014 useless extension candidates. Maximal degree in co-relation 45587. Up to 4506 conditions per place. [2024-06-28 03:56:21,502 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 341 selfloop transitions, 88 changer transitions 0/434 dead transitions. [2024-06-28 03:56:21,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 434 transitions, 7847 flow [2024-06-28 03:56:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:56:21,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152439024390244 [2024-06-28 03:56:21,504 INFO L175 Difference]: Start difference. First operand has 252 places, 373 transitions, 6141 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:56:21,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 434 transitions, 7847 flow [2024-06-28 03:56:22,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 434 transitions, 7647 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:22,196 INFO L231 Difference]: Finished difference. Result has 259 places, 405 transitions, 6821 flow [2024-06-28 03:56:22,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=5949, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6821, PETRI_PLACES=259, PETRI_TRANSITIONS=405} [2024-06-28 03:56:22,197 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2024-06-28 03:56:22,197 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 405 transitions, 6821 flow [2024-06-28 03:56:22,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:22,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:22,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:22,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:56:22,197 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:22,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:22,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1905992524, now seen corresponding path program 1 times [2024-06-28 03:56:22,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:22,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327298634] [2024-06-28 03:56:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:22,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327298634] [2024-06-28 03:56:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327298634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161038228] [2024-06-28 03:56:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:23,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:23,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:23,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 405 transitions, 6821 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:23,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:23,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:23,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:24,490 INFO L124 PetriNetUnfolderBase]: 3150/4990 cut-off events. [2024-06-28 03:56:24,490 INFO L125 PetriNetUnfolderBase]: For 344244/344244 co-relation queries the response was YES. [2024-06-28 03:56:24,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45900 conditions, 4990 events. 3150/4990 cut-off events. For 344244/344244 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29781 event pairs, 609 based on Foata normal form. 12/4996 useless extension candidates. Maximal degree in co-relation 45775. Up to 4359 conditions per place. [2024-06-28 03:56:24,553 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 382 selfloop transitions, 51 changer transitions 0/438 dead transitions. [2024-06-28 03:56:24,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 438 transitions, 7806 flow [2024-06-28 03:56:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:56:24,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45799457994579945 [2024-06-28 03:56:24,555 INFO L175 Difference]: Start difference. First operand has 259 places, 405 transitions, 6821 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:56:24,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 438 transitions, 7806 flow [2024-06-28 03:56:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 438 transitions, 7675 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:25,260 INFO L231 Difference]: Finished difference. Result has 268 places, 407 transitions, 6834 flow [2024-06-28 03:56:25,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6834, PETRI_PLACES=268, PETRI_TRANSITIONS=407} [2024-06-28 03:56:25,260 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 226 predicate places. [2024-06-28 03:56:25,260 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 407 transitions, 6834 flow [2024-06-28 03:56:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:25,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:25,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:56:25,261 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:25,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:25,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1393964522, now seen corresponding path program 2 times [2024-06-28 03:56:25,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:25,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814869059] [2024-06-28 03:56:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:25,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:26,216 INFO 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 03:56:26,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:26,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814869059] [2024-06-28 03:56:26,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814869059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:26,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:26,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:26,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774672242] [2024-06-28 03:56:26,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:26,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:26,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:26,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:26,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:26,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 407 transitions, 6834 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:26,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:26,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:27,490 INFO L124 PetriNetUnfolderBase]: 3191/5056 cut-off events. [2024-06-28 03:56:27,490 INFO L125 PetriNetUnfolderBase]: For 356784/356784 co-relation queries the response was YES. [2024-06-28 03:56:27,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46639 conditions, 5056 events. 3191/5056 cut-off events. For 356784/356784 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30247 event pairs, 597 based on Foata normal form. 12/5058 useless extension candidates. Maximal degree in co-relation 46510. Up to 4227 conditions per place. [2024-06-28 03:56:27,546 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 362 selfloop transitions, 68 changer transitions 0/435 dead transitions. [2024-06-28 03:56:27,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 435 transitions, 7830 flow [2024-06-28 03:56:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:27,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:27,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:56:27,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 03:56:27,547 INFO L175 Difference]: Start difference. First operand has 268 places, 407 transitions, 6834 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:56:27,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 435 transitions, 7830 flow [2024-06-28 03:56:28,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 435 transitions, 7673 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:28,130 INFO L231 Difference]: Finished difference. Result has 269 places, 408 transitions, 6865 flow [2024-06-28 03:56:28,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6865, PETRI_PLACES=269, PETRI_TRANSITIONS=408} [2024-06-28 03:56:28,130 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 227 predicate places. [2024-06-28 03:56:28,130 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 408 transitions, 6865 flow [2024-06-28 03:56:28,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:28,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:28,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:28,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:56:28,131 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:28,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash 784248876, now seen corresponding path program 3 times [2024-06-28 03:56:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858871181] [2024-06-28 03:56:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:29,005 INFO 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 03:56:29,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:29,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858871181] [2024-06-28 03:56:29,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858871181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:29,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:29,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:29,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807003659] [2024-06-28 03:56:29,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:29,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:29,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:29,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:29,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 408 transitions, 6865 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:29,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:29,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:29,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:30,228 INFO L124 PetriNetUnfolderBase]: 3171/5024 cut-off events. [2024-06-28 03:56:30,228 INFO L125 PetriNetUnfolderBase]: For 355692/355692 co-relation queries the response was YES. [2024-06-28 03:56:30,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45927 conditions, 5024 events. 3171/5024 cut-off events. For 355692/355692 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 29987 event pairs, 602 based on Foata normal form. 12/5026 useless extension candidates. Maximal degree in co-relation 45799. Up to 4571 conditions per place. [2024-06-28 03:56:30,289 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 407 selfloop transitions, 23 changer transitions 0/435 dead transitions. [2024-06-28 03:56:30,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 435 transitions, 7755 flow [2024-06-28 03:56:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:30,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:56:30,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:56:30,290 INFO L175 Difference]: Start difference. First operand has 269 places, 408 transitions, 6865 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:56:30,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 435 transitions, 7755 flow [2024-06-28 03:56:30,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 435 transitions, 7523 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:56:30,932 INFO L231 Difference]: Finished difference. Result has 267 places, 407 transitions, 6617 flow [2024-06-28 03:56:30,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6617, PETRI_PLACES=267, PETRI_TRANSITIONS=407} [2024-06-28 03:56:30,932 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 03:56:30,933 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 407 transitions, 6617 flow [2024-06-28 03:56:30,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:30,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:30,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:56:30,933 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:30,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1185917457, now seen corresponding path program 1 times [2024-06-28 03:56:30,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:30,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067985861] [2024-06-28 03:56:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:31,551 INFO 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 03:56:31,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067985861] [2024-06-28 03:56:31,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067985861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:31,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:31,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:31,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055155742] [2024-06-28 03:56:31,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:31,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:31,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:31,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 407 transitions, 6617 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:31,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:31,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:31,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:32,720 INFO L124 PetriNetUnfolderBase]: 3181/5046 cut-off events. [2024-06-28 03:56:32,720 INFO L125 PetriNetUnfolderBase]: For 311924/311924 co-relation queries the response was YES. [2024-06-28 03:56:32,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44725 conditions, 5046 events. 3181/5046 cut-off events. For 311924/311924 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 30219 event pairs, 638 based on Foata normal form. 2/5046 useless extension candidates. Maximal degree in co-relation 44599. Up to 4640 conditions per place. [2024-06-28 03:56:32,782 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 359 selfloop transitions, 68 changer transitions 0/432 dead transitions. [2024-06-28 03:56:32,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 432 transitions, 7674 flow [2024-06-28 03:56:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:56:32,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:56:32,783 INFO L175 Difference]: Start difference. First operand has 267 places, 407 transitions, 6617 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:56:32,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 432 transitions, 7674 flow [2024-06-28 03:56:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 432 transitions, 7504 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:56:33,553 INFO L231 Difference]: Finished difference. Result has 267 places, 410 transitions, 6655 flow [2024-06-28 03:56:33,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6447, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6655, PETRI_PLACES=267, PETRI_TRANSITIONS=410} [2024-06-28 03:56:33,553 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 03:56:33,553 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 410 transitions, 6655 flow [2024-06-28 03:56:33,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:33,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:33,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:56:33,554 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:33,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash 764900635, now seen corresponding path program 1 times [2024-06-28 03:56:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087720456] [2024-06-28 03:56:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087720456] [2024-06-28 03:56:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087720456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985314065] [2024-06-28 03:56:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:34,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:34,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:34,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 410 transitions, 6655 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:34,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:34,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:34,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:35,256 INFO L124 PetriNetUnfolderBase]: 3265/5164 cut-off events. [2024-06-28 03:56:35,256 INFO L125 PetriNetUnfolderBase]: For 337613/337613 co-relation queries the response was YES. [2024-06-28 03:56:35,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46147 conditions, 5164 events. 3265/5164 cut-off events. For 337613/337613 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 30951 event pairs, 649 based on Foata normal form. 4/5166 useless extension candidates. Maximal degree in co-relation 46022. Up to 4658 conditions per place. [2024-06-28 03:56:35,318 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 358 selfloop transitions, 81 changer transitions 0/444 dead transitions. [2024-06-28 03:56:35,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 444 transitions, 8040 flow [2024-06-28 03:56:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:56:35,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 03:56:35,320 INFO L175 Difference]: Start difference. First operand has 267 places, 410 transitions, 6655 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:56:35,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 444 transitions, 8040 flow [2024-06-28 03:56:36,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 444 transitions, 7878 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:36,063 INFO L231 Difference]: Finished difference. Result has 270 places, 419 transitions, 6958 flow [2024-06-28 03:56:36,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6493, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6958, PETRI_PLACES=270, PETRI_TRANSITIONS=419} [2024-06-28 03:56:36,064 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-28 03:56:36,064 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 419 transitions, 6958 flow [2024-06-28 03:56:36,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:36,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:36,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:56:36,064 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:36,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash -220749733, now seen corresponding path program 2 times [2024-06-28 03:56:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878112381] [2024-06-28 03:56:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:36,632 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 03:56:36,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:36,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878112381] [2024-06-28 03:56:36,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878112381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:36,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:36,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:36,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146141249] [2024-06-28 03:56:36,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:36,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:36,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:36,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:36,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 419 transitions, 6958 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:36,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:36,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:36,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:37,818 INFO L124 PetriNetUnfolderBase]: 3285/5192 cut-off events. [2024-06-28 03:56:37,819 INFO L125 PetriNetUnfolderBase]: For 349877/349877 co-relation queries the response was YES. [2024-06-28 03:56:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46950 conditions, 5192 events. 3285/5192 cut-off events. For 349877/349877 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31124 event pairs, 662 based on Foata normal form. 4/5194 useless extension candidates. Maximal degree in co-relation 46823. Up to 4864 conditions per place. [2024-06-28 03:56:37,883 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 392 selfloop transitions, 42 changer transitions 0/439 dead transitions. [2024-06-28 03:56:37,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 439 transitions, 7988 flow [2024-06-28 03:56:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 03:56:37,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:56:37,884 INFO L175 Difference]: Start difference. First operand has 270 places, 419 transitions, 6958 flow. Second operand 8 states and 144 transitions. [2024-06-28 03:56:37,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 439 transitions, 7988 flow [2024-06-28 03:56:38,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 439 transitions, 7835 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:38,667 INFO L231 Difference]: Finished difference. Result has 274 places, 422 transitions, 6989 flow [2024-06-28 03:56:38,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6989, PETRI_PLACES=274, PETRI_TRANSITIONS=422} [2024-06-28 03:56:38,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 232 predicate places. [2024-06-28 03:56:38,667 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 422 transitions, 6989 flow [2024-06-28 03:56:38,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:38,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:38,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:38,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:56:38,668 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:38,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:38,668 INFO L85 PathProgramCache]: Analyzing trace with hash -589370567, now seen corresponding path program 3 times [2024-06-28 03:56:38,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:38,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066336569] [2024-06-28 03:56:38,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:39,209 INFO 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 03:56:39,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:39,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066336569] [2024-06-28 03:56:39,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066336569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:39,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:39,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:39,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35754352] [2024-06-28 03:56:39,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:39,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:39,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:39,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:39,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:39,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:39,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 422 transitions, 6989 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:39,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:39,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:39,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:40,349 INFO L124 PetriNetUnfolderBase]: 3273/5178 cut-off events. [2024-06-28 03:56:40,349 INFO L125 PetriNetUnfolderBase]: For 353199/353199 co-relation queries the response was YES. [2024-06-28 03:56:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46614 conditions, 5178 events. 3273/5178 cut-off events. For 353199/353199 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 31061 event pairs, 652 based on Foata normal form. 4/5180 useless extension candidates. Maximal degree in co-relation 46486. Up to 4806 conditions per place. [2024-06-28 03:56:40,412 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 385 selfloop transitions, 51 changer transitions 0/441 dead transitions. [2024-06-28 03:56:40,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 441 transitions, 7967 flow [2024-06-28 03:56:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:56:40,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 03:56:40,413 INFO L175 Difference]: Start difference. First operand has 274 places, 422 transitions, 6989 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:56:40,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 441 transitions, 7967 flow [2024-06-28 03:56:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 441 transitions, 7793 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:41,109 INFO L231 Difference]: Finished difference. Result has 276 places, 422 transitions, 6925 flow [2024-06-28 03:56:41,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6815, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6925, PETRI_PLACES=276, PETRI_TRANSITIONS=422} [2024-06-28 03:56:41,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 03:56:41,110 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 422 transitions, 6925 flow [2024-06-28 03:56:41,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:41,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:41,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:56:41,110 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:41,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -220987069, now seen corresponding path program 2 times [2024-06-28 03:56:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:41,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691105394] [2024-06-28 03:56:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:41,786 INFO 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 03:56:41,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:41,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691105394] [2024-06-28 03:56:41,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691105394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:41,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:41,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:41,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636430078] [2024-06-28 03:56:41,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:41,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:41,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:41,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:41,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 422 transitions, 6925 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:41,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:41,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:41,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:42,949 INFO L124 PetriNetUnfolderBase]: 3283/5196 cut-off events. [2024-06-28 03:56:42,949 INFO L125 PetriNetUnfolderBase]: For 358060/358060 co-relation queries the response was YES. [2024-06-28 03:56:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46806 conditions, 5196 events. 3283/5196 cut-off events. For 358060/358060 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31121 event pairs, 650 based on Foata normal form. 2/5196 useless extension candidates. Maximal degree in co-relation 46678. Up to 4858 conditions per place. [2024-06-28 03:56:43,018 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 396 selfloop transitions, 41 changer transitions 0/442 dead transitions. [2024-06-28 03:56:43,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 442 transitions, 7953 flow [2024-06-28 03:56:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:56:43,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:56:43,019 INFO L175 Difference]: Start difference. First operand has 276 places, 422 transitions, 6925 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:56:43,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 442 transitions, 7953 flow [2024-06-28 03:56:43,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 442 transitions, 7801 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:43,765 INFO L231 Difference]: Finished difference. Result has 278 places, 425 transitions, 6933 flow [2024-06-28 03:56:43,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6773, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6933, PETRI_PLACES=278, PETRI_TRANSITIONS=425} [2024-06-28 03:56:43,766 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 03:56:43,766 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 425 transitions, 6933 flow [2024-06-28 03:56:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:43,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:43,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:43,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:56:43,766 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:43,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:43,767 INFO L85 PathProgramCache]: Analyzing trace with hash -220740805, now seen corresponding path program 1 times [2024-06-28 03:56:43,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:43,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531261006] [2024-06-28 03:56:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:44,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:44,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:44,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531261006] [2024-06-28 03:56:44,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531261006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:44,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:44,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:56:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054700018] [2024-06-28 03:56:44,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:44,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:56:44,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:56:44,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:56:44,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:44,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 425 transitions, 6933 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:44,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:44,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:44,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:45,923 INFO L124 PetriNetUnfolderBase]: 3327/5263 cut-off events. [2024-06-28 03:56:45,924 INFO L125 PetriNetUnfolderBase]: For 383686/383686 co-relation queries the response was YES. [2024-06-28 03:56:45,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47261 conditions, 5263 events. 3327/5263 cut-off events. For 383686/383686 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31620 event pairs, 658 based on Foata normal form. 12/5273 useless extension candidates. Maximal degree in co-relation 47132. Up to 4807 conditions per place. [2024-06-28 03:56:45,993 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 395 selfloop transitions, 51 changer transitions 0/451 dead transitions. [2024-06-28 03:56:45,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 451 transitions, 8025 flow [2024-06-28 03:56:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:56:45,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:56:45,995 INFO L175 Difference]: Start difference. First operand has 278 places, 425 transitions, 6933 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:56:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 451 transitions, 8025 flow [2024-06-28 03:56:46,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 451 transitions, 7918 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:46,804 INFO L231 Difference]: Finished difference. Result has 281 places, 426 transitions, 6949 flow [2024-06-28 03:56:46,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6949, PETRI_PLACES=281, PETRI_TRANSITIONS=426} [2024-06-28 03:56:46,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-28 03:56:46,805 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 426 transitions, 6949 flow [2024-06-28 03:56:46,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:46,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:46,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:46,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:56:46,806 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:46,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -506817275, now seen corresponding path program 3 times [2024-06-28 03:56:46,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354130207] [2024-06-28 03:56:46,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:47,437 INFO 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 03:56:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354130207] [2024-06-28 03:56:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354130207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:47,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897608992] [2024-06-28 03:56:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:47,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:47,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 426 transitions, 6949 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:47,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:47,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:47,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:48,600 INFO L124 PetriNetUnfolderBase]: 3321/5257 cut-off events. [2024-06-28 03:56:48,600 INFO L125 PetriNetUnfolderBase]: For 376857/376857 co-relation queries the response was YES. [2024-06-28 03:56:48,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47337 conditions, 5257 events. 3321/5257 cut-off events. For 376857/376857 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 31605 event pairs, 668 based on Foata normal form. 2/5253 useless extension candidates. Maximal degree in co-relation 47206. Up to 4617 conditions per place. [2024-06-28 03:56:48,669 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 325 selfloop transitions, 121 changer transitions 0/451 dead transitions. [2024-06-28 03:56:48,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 451 transitions, 8159 flow [2024-06-28 03:56:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:56:48,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603658536585366 [2024-06-28 03:56:48,670 INFO L175 Difference]: Start difference. First operand has 281 places, 426 transitions, 6949 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:56:48,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 451 transitions, 8159 flow [2024-06-28 03:56:49,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 451 transitions, 8036 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:49,432 INFO L231 Difference]: Finished difference. Result has 283 places, 426 transitions, 7074 flow [2024-06-28 03:56:49,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6826, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7074, PETRI_PLACES=283, PETRI_TRANSITIONS=426} [2024-06-28 03:56:49,433 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 03:56:49,433 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 426 transitions, 7074 flow [2024-06-28 03:56:49,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:49,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:49,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:49,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:56:49,433 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:49,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash 627341635, now seen corresponding path program 4 times [2024-06-28 03:56:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:49,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844988509] [2024-06-28 03:56:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:50,104 INFO 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 03:56:50,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:50,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844988509] [2024-06-28 03:56:50,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844988509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:50,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:50,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095444631] [2024-06-28 03:56:50,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:50,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:50,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:50,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:50,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:50,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:50,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 426 transitions, 7074 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:50,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:50,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:51,339 INFO L124 PetriNetUnfolderBase]: 3315/5255 cut-off events. [2024-06-28 03:56:51,339 INFO L125 PetriNetUnfolderBase]: For 384948/384948 co-relation queries the response was YES. [2024-06-28 03:56:51,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47515 conditions, 5255 events. 3315/5255 cut-off events. For 384948/384948 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 31614 event pairs, 670 based on Foata normal form. 2/5251 useless extension candidates. Maximal degree in co-relation 47383. Up to 4612 conditions per place. [2024-06-28 03:56:51,407 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 338 selfloop transitions, 108 changer transitions 0/451 dead transitions. [2024-06-28 03:56:51,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 451 transitions, 8187 flow [2024-06-28 03:56:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:56:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:56:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 03:56:51,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:56:51,408 INFO L175 Difference]: Start difference. First operand has 283 places, 426 transitions, 7074 flow. Second operand 9 states and 162 transitions. [2024-06-28 03:56:51,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 451 transitions, 8187 flow [2024-06-28 03:56:52,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 451 transitions, 7917 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:56:52,289 INFO L231 Difference]: Finished difference. Result has 286 places, 426 transitions, 7026 flow [2024-06-28 03:56:52,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6804, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7026, PETRI_PLACES=286, PETRI_TRANSITIONS=426} [2024-06-28 03:56:52,290 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 03:56:52,290 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 426 transitions, 7026 flow [2024-06-28 03:56:52,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:52,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:52,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:52,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:56:52,290 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:52,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 627341821, now seen corresponding path program 4 times [2024-06-28 03:56:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:52,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541386261] [2024-06-28 03:56:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:52,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:52,902 INFO 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 03:56:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541386261] [2024-06-28 03:56:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541386261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569371004] [2024-06-28 03:56:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:52,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:52,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 426 transitions, 7026 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:52,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:52,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:52,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:54,169 INFO L124 PetriNetUnfolderBase]: 3323/5277 cut-off events. [2024-06-28 03:56:54,170 INFO L125 PetriNetUnfolderBase]: For 402329/402329 co-relation queries the response was YES. [2024-06-28 03:56:54,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47534 conditions, 5277 events. 3323/5277 cut-off events. For 402329/402329 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31870 event pairs, 602 based on Foata normal form. 8/5279 useless extension candidates. Maximal degree in co-relation 47401. Up to 3906 conditions per place. [2024-06-28 03:56:54,239 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 276 selfloop transitions, 176 changer transitions 0/457 dead transitions. [2024-06-28 03:56:54,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 457 transitions, 8482 flow [2024-06-28 03:56:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:56:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:56:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:56:54,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847560975609756 [2024-06-28 03:56:54,241 INFO L175 Difference]: Start difference. First operand has 286 places, 426 transitions, 7026 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:56:54,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 457 transitions, 8482 flow [2024-06-28 03:56:55,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 457 transitions, 8232 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:56:55,067 INFO L231 Difference]: Finished difference. Result has 287 places, 429 transitions, 7216 flow [2024-06-28 03:56:55,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6776, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7216, PETRI_PLACES=287, PETRI_TRANSITIONS=429} [2024-06-28 03:56:55,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 03:56:55,068 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 429 transitions, 7216 flow [2024-06-28 03:56:55,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:55,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:55,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:56:55,068 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:55,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1011126781, now seen corresponding path program 5 times [2024-06-28 03:56:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262591929] [2024-06-28 03:56:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:55,750 INFO 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 03:56:55,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:55,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262591929] [2024-06-28 03:56:55,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262591929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:55,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:55,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:55,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693341046] [2024-06-28 03:56:55,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:55,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:55,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:55,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:55,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:55,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:55,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 429 transitions, 7216 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:55,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:55,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:55,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:57,108 INFO L124 PetriNetUnfolderBase]: 3331/5269 cut-off events. [2024-06-28 03:56:57,108 INFO L125 PetriNetUnfolderBase]: For 408376/408376 co-relation queries the response was YES. [2024-06-28 03:56:57,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48039 conditions, 5269 events. 3331/5269 cut-off events. For 408376/408376 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 31668 event pairs, 614 based on Foata normal form. 8/5275 useless extension candidates. Maximal degree in co-relation 47905. Up to 4777 conditions per place. [2024-06-28 03:56:57,169 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 386 selfloop transitions, 65 changer transitions 0/456 dead transitions. [2024-06-28 03:56:57,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 456 transitions, 8584 flow [2024-06-28 03:56:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:56:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:56:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 03:56:57,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2024-06-28 03:56:57,171 INFO L175 Difference]: Start difference. First operand has 287 places, 429 transitions, 7216 flow. Second operand 10 states and 180 transitions. [2024-06-28 03:56:57,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 456 transitions, 8584 flow [2024-06-28 03:56:58,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 456 transitions, 7965 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-28 03:56:58,020 INFO L231 Difference]: Finished difference. Result has 289 places, 432 transitions, 6803 flow [2024-06-28 03:56:58,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6603, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6803, PETRI_PLACES=289, PETRI_TRANSITIONS=432} [2024-06-28 03:56:58,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-28 03:56:58,021 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 432 transitions, 6803 flow [2024-06-28 03:56:58,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:58,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:58,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:56:58,021 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:58,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1956369293, now seen corresponding path program 6 times [2024-06-28 03:56:58,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:58,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831284619] [2024-06-28 03:56:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:58,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:58,629 INFO 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 03:56:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831284619] [2024-06-28 03:56:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831284619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:58,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:58,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522029844] [2024-06-28 03:56:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:58,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:58,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:58,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:58,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:56:58,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 432 transitions, 6803 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:58,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:56:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:59,944 INFO L124 PetriNetUnfolderBase]: 3339/5306 cut-off events. [2024-06-28 03:56:59,944 INFO L125 PetriNetUnfolderBase]: For 402262/402262 co-relation queries the response was YES. [2024-06-28 03:56:59,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46832 conditions, 5306 events. 3339/5306 cut-off events. For 402262/402262 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 32076 event pairs, 630 based on Foata normal form. 8/5312 useless extension candidates. Maximal degree in co-relation 46699. Up to 4469 conditions per place. [2024-06-28 03:57:00,002 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 351 selfloop transitions, 111 changer transitions 0/467 dead transitions. [2024-06-28 03:57:00,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 467 transitions, 8278 flow [2024-06-28 03:57:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 03:57:00,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:57:00,003 INFO L175 Difference]: Start difference. First operand has 289 places, 432 transitions, 6803 flow. Second operand 8 states and 164 transitions. [2024-06-28 03:57:00,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 467 transitions, 8278 flow [2024-06-28 03:57:00,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 467 transitions, 8082 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 03:57:00,807 INFO L231 Difference]: Finished difference. Result has 288 places, 435 transitions, 6917 flow [2024-06-28 03:57:00,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6607, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6917, PETRI_PLACES=288, PETRI_TRANSITIONS=435} [2024-06-28 03:57:00,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 03:57:00,808 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 435 transitions, 6917 flow [2024-06-28 03:57:00,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:00,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:00,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:00,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:57:00,808 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:00,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1485879321, now seen corresponding path program 7 times [2024-06-28 03:57:00,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:00,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504590782] [2024-06-28 03:57:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:00,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:01,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:01,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504590782] [2024-06-28 03:57:01,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504590782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:01,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:01,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:01,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165243075] [2024-06-28 03:57:01,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:01,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:01,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:01,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 435 transitions, 6917 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:01,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:01,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:01,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:02,562 INFO L124 PetriNetUnfolderBase]: 3359/5334 cut-off events. [2024-06-28 03:57:02,562 INFO L125 PetriNetUnfolderBase]: For 407781/407781 co-relation queries the response was YES. [2024-06-28 03:57:02,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47322 conditions, 5334 events. 3359/5334 cut-off events. For 407781/407781 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 32254 event pairs, 664 based on Foata normal form. 4/5336 useless extension candidates. Maximal degree in co-relation 47189. Up to 4994 conditions per place. [2024-06-28 03:57:02,742 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 418 selfloop transitions, 31 changer transitions 0/454 dead transitions. [2024-06-28 03:57:02,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 454 transitions, 7961 flow [2024-06-28 03:57:02,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:02,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 03:57:02,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4529616724738676 [2024-06-28 03:57:02,743 INFO L175 Difference]: Start difference. First operand has 288 places, 435 transitions, 6917 flow. Second operand 7 states and 130 transitions. [2024-06-28 03:57:02,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 454 transitions, 7961 flow [2024-06-28 03:57:03,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 454 transitions, 7765 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:03,724 INFO L231 Difference]: Finished difference. Result has 291 places, 438 transitions, 6869 flow [2024-06-28 03:57:03,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6869, PETRI_PLACES=291, PETRI_TRANSITIONS=438} [2024-06-28 03:57:03,725 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 249 predicate places. [2024-06-28 03:57:03,725 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 438 transitions, 6869 flow [2024-06-28 03:57:03,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:03,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:03,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:03,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:57:03,725 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1478521161, now seen corresponding path program 8 times [2024-06-28 03:57:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:03,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744908560] [2024-06-28 03:57:03,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:03,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:04,370 INFO 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 03:57:04,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:04,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744908560] [2024-06-28 03:57:04,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744908560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:04,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:04,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:04,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138533357] [2024-06-28 03:57:04,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:04,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:04,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:04,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:04,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:04,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:04,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 438 transitions, 6869 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:04,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:04,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:04,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:05,562 INFO L124 PetriNetUnfolderBase]: 3327/5273 cut-off events. [2024-06-28 03:57:05,563 INFO L125 PetriNetUnfolderBase]: For 410590/410590 co-relation queries the response was YES. [2024-06-28 03:57:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45993 conditions, 5273 events. 3327/5273 cut-off events. For 410590/410590 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 31789 event pairs, 624 based on Foata normal form. 8/5279 useless extension candidates. Maximal degree in co-relation 45859. Up to 4842 conditions per place. [2024-06-28 03:57:05,630 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 406 selfloop transitions, 48 changer transitions 0/459 dead transitions. [2024-06-28 03:57:05,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 459 transitions, 7911 flow [2024-06-28 03:57:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:05,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:57:05,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:57:05,631 INFO L175 Difference]: Start difference. First operand has 291 places, 438 transitions, 6869 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:57:05,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 459 transitions, 7911 flow [2024-06-28 03:57:06,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 459 transitions, 7748 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:06,843 INFO L231 Difference]: Finished difference. Result has 294 places, 438 transitions, 6819 flow [2024-06-28 03:57:06,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6819, PETRI_PLACES=294, PETRI_TRANSITIONS=438} [2024-06-28 03:57:06,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 03:57:06,844 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 438 transitions, 6819 flow [2024-06-28 03:57:06,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:06,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:06,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:06,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:57:06,844 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:06,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1685187621, now seen corresponding path program 9 times [2024-06-28 03:57:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325635501] [2024-06-28 03:57:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:06,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:07,538 INFO 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 03:57:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325635501] [2024-06-28 03:57:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325635501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:07,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702536341] [2024-06-28 03:57:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:07,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:07,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 438 transitions, 6819 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:07,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:07,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:07,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:08,786 INFO L124 PetriNetUnfolderBase]: 3315/5274 cut-off events. [2024-06-28 03:57:08,786 INFO L125 PetriNetUnfolderBase]: For 402773/402773 co-relation queries the response was YES. [2024-06-28 03:57:08,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45637 conditions, 5274 events. 3315/5274 cut-off events. For 402773/402773 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 31911 event pairs, 638 based on Foata normal form. 4/5276 useless extension candidates. Maximal degree in co-relation 45502. Up to 4852 conditions per place. [2024-06-28 03:57:08,858 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 397 selfloop transitions, 58 changer transitions 0/460 dead transitions. [2024-06-28 03:57:08,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 460 transitions, 7864 flow [2024-06-28 03:57:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:57:08,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 03:57:08,859 INFO L175 Difference]: Start difference. First operand has 294 places, 438 transitions, 6819 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:57:08,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 460 transitions, 7864 flow [2024-06-28 03:57:09,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 460 transitions, 7738 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:09,784 INFO L231 Difference]: Finished difference. Result has 294 places, 438 transitions, 6816 flow [2024-06-28 03:57:09,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6816, PETRI_PLACES=294, PETRI_TRANSITIONS=438} [2024-06-28 03:57:09,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 252 predicate places. [2024-06-28 03:57:09,785 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 438 transitions, 6816 flow [2024-06-28 03:57:09,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:09,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:09,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:09,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:57:09,785 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:09,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1242112743, now seen corresponding path program 2 times [2024-06-28 03:57:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:09,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068293473] [2024-06-28 03:57:09,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:09,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:10,721 INFO 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 03:57:10,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:10,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068293473] [2024-06-28 03:57:10,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068293473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:10,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:10,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221071326] [2024-06-28 03:57:10,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:10,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:10,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:10,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:10,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 438 transitions, 6816 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:10,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:10,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:10,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:12,050 INFO L124 PetriNetUnfolderBase]: 3367/5353 cut-off events. [2024-06-28 03:57:12,050 INFO L125 PetriNetUnfolderBase]: For 435668/435668 co-relation queries the response was YES. [2024-06-28 03:57:12,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46228 conditions, 5353 events. 3367/5353 cut-off events. For 435668/435668 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32410 event pairs, 607 based on Foata normal form. 14/5365 useless extension candidates. Maximal degree in co-relation 46092. Up to 4889 conditions per place. [2024-06-28 03:57:12,119 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 419 selfloop transitions, 39 changer transitions 0/463 dead transitions. [2024-06-28 03:57:12,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 463 transitions, 7892 flow [2024-06-28 03:57:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-06-28 03:57:12,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-06-28 03:57:12,120 INFO L175 Difference]: Start difference. First operand has 294 places, 438 transitions, 6816 flow. Second operand 6 states and 126 transitions. [2024-06-28 03:57:12,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 463 transitions, 7892 flow [2024-06-28 03:57:13,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 463 transitions, 7559 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:13,164 INFO L231 Difference]: Finished difference. Result has 292 places, 440 transitions, 6602 flow [2024-06-28 03:57:13,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6483, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6602, PETRI_PLACES=292, PETRI_TRANSITIONS=440} [2024-06-28 03:57:13,164 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2024-06-28 03:57:13,164 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 440 transitions, 6602 flow [2024-06-28 03:57:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:13,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:13,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:13,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:57:13,165 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:13,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:13,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1241607753, now seen corresponding path program 3 times [2024-06-28 03:57:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039094982] [2024-06-28 03:57:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:14,095 INFO 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 03:57:14,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039094982] [2024-06-28 03:57:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039094982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:14,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352171797] [2024-06-28 03:57:14,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:14,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:14,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:14,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:14,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 440 transitions, 6602 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:14,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:14,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:14,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:15,370 INFO L124 PetriNetUnfolderBase]: 3395/5397 cut-off events. [2024-06-28 03:57:15,370 INFO L125 PetriNetUnfolderBase]: For 429133/429133 co-relation queries the response was YES. [2024-06-28 03:57:15,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46627 conditions, 5397 events. 3395/5397 cut-off events. For 429133/429133 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 32821 event pairs, 601 based on Foata normal form. 8/5403 useless extension candidates. Maximal degree in co-relation 46490. Up to 4895 conditions per place. [2024-06-28 03:57:15,439 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 422 selfloop transitions, 42 changer transitions 0/469 dead transitions. [2024-06-28 03:57:15,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 469 transitions, 7742 flow [2024-06-28 03:57:15,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 03:57:15,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2024-06-28 03:57:15,440 INFO L175 Difference]: Start difference. First operand has 292 places, 440 transitions, 6602 flow. Second operand 7 states and 143 transitions. [2024-06-28 03:57:15,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 469 transitions, 7742 flow [2024-06-28 03:57:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 469 transitions, 7665 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:16,375 INFO L231 Difference]: Finished difference. Result has 295 places, 441 transitions, 6633 flow [2024-06-28 03:57:16,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6527, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6633, PETRI_PLACES=295, PETRI_TRANSITIONS=441} [2024-06-28 03:57:16,376 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2024-06-28 03:57:16,376 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 441 transitions, 6633 flow [2024-06-28 03:57:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:16,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:16,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:16,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:57:16,376 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:16,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:16,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1684941543, now seen corresponding path program 4 times [2024-06-28 03:57:16,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:16,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539405297] [2024-06-28 03:57:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:16,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:17,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539405297] [2024-06-28 03:57:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539405297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:17,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286238138] [2024-06-28 03:57:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:17,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:17,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:17,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 441 transitions, 6633 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:17,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:17,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:17,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:18,523 INFO L124 PetriNetUnfolderBase]: 3413/5431 cut-off events. [2024-06-28 03:57:18,523 INFO L125 PetriNetUnfolderBase]: For 430183/430183 co-relation queries the response was YES. [2024-06-28 03:57:18,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46504 conditions, 5431 events. 3413/5431 cut-off events. For 430183/430183 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 33016 event pairs, 653 based on Foata normal form. 12/5441 useless extension candidates. Maximal degree in co-relation 46366. Up to 4989 conditions per place. [2024-06-28 03:57:18,588 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 420 selfloop transitions, 40 changer transitions 0/465 dead transitions. [2024-06-28 03:57:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 465 transitions, 7731 flow [2024-06-28 03:57:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:57:18,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47735191637630664 [2024-06-28 03:57:18,589 INFO L175 Difference]: Start difference. First operand has 295 places, 441 transitions, 6633 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:57:18,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 465 transitions, 7731 flow [2024-06-28 03:57:19,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 465 transitions, 7641 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:19,658 INFO L231 Difference]: Finished difference. Result has 297 places, 442 transitions, 6648 flow [2024-06-28 03:57:19,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6543, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6648, PETRI_PLACES=297, PETRI_TRANSITIONS=442} [2024-06-28 03:57:19,658 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-28 03:57:19,658 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 442 transitions, 6648 flow [2024-06-28 03:57:19,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:19,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:19,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:19,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:57:19,659 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:19,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash 893255295, now seen corresponding path program 1 times [2024-06-28 03:57:19,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:19,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908485916] [2024-06-28 03:57:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:20,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:20,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908485916] [2024-06-28 03:57:20,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908485916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:20,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:20,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983290646] [2024-06-28 03:57:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:20,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:20,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:20,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:20,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 442 transitions, 6648 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:20,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:20,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:20,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:21,887 INFO L124 PetriNetUnfolderBase]: 3442/5475 cut-off events. [2024-06-28 03:57:21,888 INFO L125 PetriNetUnfolderBase]: For 429152/429152 co-relation queries the response was YES. [2024-06-28 03:57:21,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47060 conditions, 5475 events. 3442/5475 cut-off events. For 429152/429152 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 33398 event pairs, 555 based on Foata normal form. 4/5473 useless extension candidates. Maximal degree in co-relation 46921. Up to 4850 conditions per place. [2024-06-28 03:57:21,950 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 393 selfloop transitions, 112 changer transitions 0/510 dead transitions. [2024-06-28 03:57:21,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 510 transitions, 8600 flow [2024-06-28 03:57:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:21,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:57:21,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:57:21,951 INFO L175 Difference]: Start difference. First operand has 297 places, 442 transitions, 6648 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:57:21,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 510 transitions, 8600 flow [2024-06-28 03:57:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 510 transitions, 8515 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:22,916 INFO L231 Difference]: Finished difference. Result has 304 places, 483 transitions, 7575 flow [2024-06-28 03:57:22,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=6563, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7575, PETRI_PLACES=304, PETRI_TRANSITIONS=483} [2024-06-28 03:57:22,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 03:57:22,917 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 483 transitions, 7575 flow [2024-06-28 03:57:22,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:22,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:22,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:22,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:57:22,917 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:22,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:22,917 INFO L85 PathProgramCache]: Analyzing trace with hash -509603741, now seen corresponding path program 1 times [2024-06-28 03:57:22,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:22,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842136124] [2024-06-28 03:57:22,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:22,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:23,697 INFO 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 03:57:23,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842136124] [2024-06-28 03:57:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842136124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:23,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:23,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954605968] [2024-06-28 03:57:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:23,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:23,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:23,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 483 transitions, 7575 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:23,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:23,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:23,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:25,000 INFO L124 PetriNetUnfolderBase]: 3488/5527 cut-off events. [2024-06-28 03:57:25,000 INFO L125 PetriNetUnfolderBase]: For 451351/451351 co-relation queries the response was YES. [2024-06-28 03:57:25,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48767 conditions, 5527 events. 3488/5527 cut-off events. For 451351/451351 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 33635 event pairs, 556 based on Foata normal form. 4/5525 useless extension candidates. Maximal degree in co-relation 48624. Up to 4469 conditions per place. [2024-06-28 03:57:25,079 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 371 selfloop transitions, 199 changer transitions 0/575 dead transitions. [2024-06-28 03:57:25,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 575 transitions, 10090 flow [2024-06-28 03:57:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:57:25,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:57:25,081 INFO L175 Difference]: Start difference. First operand has 304 places, 483 transitions, 7575 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:57:25,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 575 transitions, 10090 flow [2024-06-28 03:57:26,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 575 transitions, 9895 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-06-28 03:57:26,447 INFO L231 Difference]: Finished difference. Result has 316 places, 548 transitions, 8985 flow [2024-06-28 03:57:26,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=7380, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8985, PETRI_PLACES=316, PETRI_TRANSITIONS=548} [2024-06-28 03:57:26,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-28 03:57:26,448 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 548 transitions, 8985 flow [2024-06-28 03:57:26,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:26,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:26,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:26,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:57:26,448 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:26,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:26,449 INFO L85 PathProgramCache]: Analyzing trace with hash -509603865, now seen corresponding path program 2 times [2024-06-28 03:57:26,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:26,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054708655] [2024-06-28 03:57:26,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:26,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:27,223 INFO 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 03:57:27,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054708655] [2024-06-28 03:57:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054708655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:27,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:27,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:27,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827272929] [2024-06-28 03:57:27,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:27,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:27,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:27,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:27,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 548 transitions, 8985 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:27,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:27,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:27,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:28,644 INFO L124 PetriNetUnfolderBase]: 3504/5554 cut-off events. [2024-06-28 03:57:28,644 INFO L125 PetriNetUnfolderBase]: For 468800/468800 co-relation queries the response was YES. [2024-06-28 03:57:28,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50811 conditions, 5554 events. 3504/5554 cut-off events. For 468800/468800 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 33865 event pairs, 631 based on Foata normal form. 4/5552 useless extension candidates. Maximal degree in co-relation 50662. Up to 5005 conditions per place. [2024-06-28 03:57:28,720 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 457 selfloop transitions, 111 changer transitions 0/573 dead transitions. [2024-06-28 03:57:28,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 573 transitions, 10359 flow [2024-06-28 03:57:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:28,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:57:28,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 03:57:28,722 INFO L175 Difference]: Start difference. First operand has 316 places, 548 transitions, 8985 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:57:28,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 573 transitions, 10359 flow [2024-06-28 03:57:29,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 573 transitions, 10217 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-06-28 03:57:29,901 INFO L231 Difference]: Finished difference. Result has 323 places, 551 transitions, 9113 flow [2024-06-28 03:57:29,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8843, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9113, PETRI_PLACES=323, PETRI_TRANSITIONS=551} [2024-06-28 03:57:29,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 281 predicate places. [2024-06-28 03:57:29,901 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 551 transitions, 9113 flow [2024-06-28 03:57:29,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:29,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:29,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:29,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:57:29,902 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:29,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash 896112255, now seen corresponding path program 3 times [2024-06-28 03:57:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:29,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559478114] [2024-06-28 03:57:29,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:29,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:30,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559478114] [2024-06-28 03:57:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559478114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:30,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075692356] [2024-06-28 03:57:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:30,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:30,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:30,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 551 transitions, 9113 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:30,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:30,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:30,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:32,194 INFO L124 PetriNetUnfolderBase]: 3561/5653 cut-off events. [2024-06-28 03:57:32,194 INFO L125 PetriNetUnfolderBase]: For 499241/499241 co-relation queries the response was YES. [2024-06-28 03:57:32,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51166 conditions, 5653 events. 3561/5653 cut-off events. For 499241/499241 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 34611 event pairs, 650 based on Foata normal form. 14/5661 useless extension candidates. Maximal degree in co-relation 51015. Up to 4925 conditions per place. [2024-06-28 03:57:32,273 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 419 selfloop transitions, 157 changer transitions 0/581 dead transitions. [2024-06-28 03:57:32,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 581 transitions, 10476 flow [2024-06-28 03:57:32,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:32,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:57:32,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46070460704607047 [2024-06-28 03:57:32,274 INFO L175 Difference]: Start difference. First operand has 323 places, 551 transitions, 9113 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:57:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 581 transitions, 10476 flow [2024-06-28 03:57:33,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 581 transitions, 10261 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:33,839 INFO L231 Difference]: Finished difference. Result has 326 places, 558 transitions, 9319 flow [2024-06-28 03:57:33,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8899, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9319, PETRI_PLACES=326, PETRI_TRANSITIONS=558} [2024-06-28 03:57:33,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-28 03:57:33,839 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 558 transitions, 9319 flow [2024-06-28 03:57:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:33,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:33,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:57:33,840 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:33,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -763321593, now seen corresponding path program 2 times [2024-06-28 03:57:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:33,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976496799] [2024-06-28 03:57:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:34,653 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 03:57:34,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:34,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976496799] [2024-06-28 03:57:34,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976496799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:34,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286764512] [2024-06-28 03:57:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:34,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:34,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:34,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:34,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:34,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 558 transitions, 9319 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:34,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:34,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:34,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:36,045 INFO L124 PetriNetUnfolderBase]: 3591/5679 cut-off events. [2024-06-28 03:57:36,045 INFO L125 PetriNetUnfolderBase]: For 494710/494710 co-relation queries the response was YES. [2024-06-28 03:57:36,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51927 conditions, 5679 events. 3591/5679 cut-off events. For 494710/494710 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 34631 event pairs, 600 based on Foata normal form. 6/5679 useless extension candidates. Maximal degree in co-relation 51775. Up to 4304 conditions per place. [2024-06-28 03:57:36,129 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 320 selfloop transitions, 269 changer transitions 0/594 dead transitions. [2024-06-28 03:57:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 594 transitions, 11163 flow [2024-06-28 03:57:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:57:36,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47696476964769646 [2024-06-28 03:57:36,130 INFO L175 Difference]: Start difference. First operand has 326 places, 558 transitions, 9319 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:57:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 594 transitions, 11163 flow [2024-06-28 03:57:37,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 594 transitions, 10836 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:37,544 INFO L231 Difference]: Finished difference. Result has 329 places, 565 transitions, 9709 flow [2024-06-28 03:57:37,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=8992, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9709, PETRI_PLACES=329, PETRI_TRANSITIONS=565} [2024-06-28 03:57:37,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-28 03:57:37,545 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 565 transitions, 9709 flow [2024-06-28 03:57:37,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:37,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:37,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:37,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:57:37,545 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:37,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:37,545 INFO L85 PathProgramCache]: Analyzing trace with hash 896112379, now seen corresponding path program 3 times [2024-06-28 03:57:37,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:37,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476238734] [2024-06-28 03:57:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:37,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:38,417 INFO 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 03:57:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476238734] [2024-06-28 03:57:38,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476238734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:38,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:38,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:38,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542014687] [2024-06-28 03:57:38,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:38,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:38,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:38,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:38,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:38,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:38,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 565 transitions, 9709 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:38,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:38,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:38,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:39,900 INFO L124 PetriNetUnfolderBase]: 3611/5716 cut-off events. [2024-06-28 03:57:39,901 INFO L125 PetriNetUnfolderBase]: For 505212/505212 co-relation queries the response was YES. [2024-06-28 03:57:39,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53308 conditions, 5716 events. 3611/5716 cut-off events. For 505212/505212 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 34958 event pairs, 557 based on Foata normal form. 4/5714 useless extension candidates. Maximal degree in co-relation 53155. Up to 4798 conditions per place. [2024-06-28 03:57:39,982 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 410 selfloop transitions, 181 changer transitions 0/596 dead transitions. [2024-06-28 03:57:39,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 596 transitions, 11413 flow [2024-06-28 03:57:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:57:39,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4609756097560976 [2024-06-28 03:57:39,983 INFO L175 Difference]: Start difference. First operand has 329 places, 565 transitions, 9709 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:57:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 596 transitions, 11413 flow [2024-06-28 03:57:41,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 596 transitions, 10889 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:41,809 INFO L231 Difference]: Finished difference. Result has 333 places, 571 transitions, 9698 flow [2024-06-28 03:57:41,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9698, PETRI_PLACES=333, PETRI_TRANSITIONS=571} [2024-06-28 03:57:41,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-28 03:57:41,810 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 571 transitions, 9698 flow [2024-06-28 03:57:41,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:41,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:41,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:41,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:57:41,810 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:41,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:41,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1011408199, now seen corresponding path program 4 times [2024-06-28 03:57:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717550753] [2024-06-28 03:57:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:41,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:42,823 INFO 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 03:57:42,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:42,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717550753] [2024-06-28 03:57:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717550753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762220040] [2024-06-28 03:57:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:42,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:42,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 571 transitions, 9698 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:42,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:42,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:42,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:44,360 INFO L124 PetriNetUnfolderBase]: 3631/5749 cut-off events. [2024-06-28 03:57:44,360 INFO L125 PetriNetUnfolderBase]: For 518207/518207 co-relation queries the response was YES. [2024-06-28 03:57:44,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53579 conditions, 5749 events. 3631/5749 cut-off events. For 518207/518207 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 35197 event pairs, 609 based on Foata normal form. 4/5751 useless extension candidates. Maximal degree in co-relation 53425. Up to 5304 conditions per place. [2024-06-28 03:57:44,441 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 533 selfloop transitions, 64 changer transitions 0/602 dead transitions. [2024-06-28 03:57:44,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 602 transitions, 11467 flow [2024-06-28 03:57:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:44,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 03:57:44,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43458980044345896 [2024-06-28 03:57:44,443 INFO L175 Difference]: Start difference. First operand has 333 places, 571 transitions, 9698 flow. Second operand 11 states and 196 transitions. [2024-06-28 03:57:44,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 602 transitions, 11467 flow [2024-06-28 03:57:46,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 602 transitions, 10971 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:46,106 INFO L231 Difference]: Finished difference. Result has 339 places, 578 transitions, 9552 flow [2024-06-28 03:57:46,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9208, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9552, PETRI_PLACES=339, PETRI_TRANSITIONS=578} [2024-06-28 03:57:46,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-06-28 03:57:46,107 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 578 transitions, 9552 flow [2024-06-28 03:57:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:46,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:46,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:46,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:57:46,107 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:46,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash -391516061, now seen corresponding path program 5 times [2024-06-28 03:57:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:46,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944707812] [2024-06-28 03:57:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:46,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:46,916 INFO 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 03:57:46,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:46,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944707812] [2024-06-28 03:57:46,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944707812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:46,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:46,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:46,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082753317] [2024-06-28 03:57:46,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:46,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:46,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:47,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:47,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 578 transitions, 9552 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:47,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:47,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:47,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:48,475 INFO L124 PetriNetUnfolderBase]: 3705/5844 cut-off events. [2024-06-28 03:57:48,476 INFO L125 PetriNetUnfolderBase]: For 549791/549791 co-relation queries the response was YES. [2024-06-28 03:57:48,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54633 conditions, 5844 events. 3705/5844 cut-off events. For 549791/549791 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 35627 event pairs, 611 based on Foata normal form. 6/5848 useless extension candidates. Maximal degree in co-relation 54477. Up to 5234 conditions per place. [2024-06-28 03:57:48,567 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 514 selfloop transitions, 101 changer transitions 0/620 dead transitions. [2024-06-28 03:57:48,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 620 transitions, 11725 flow [2024-06-28 03:57:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:57:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:57:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 03:57:48,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:57:48,568 INFO L175 Difference]: Start difference. First operand has 339 places, 578 transitions, 9552 flow. Second operand 11 states and 205 transitions. [2024-06-28 03:57:48,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 620 transitions, 11725 flow [2024-06-28 03:57:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 620 transitions, 11556 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:50,389 INFO L231 Difference]: Finished difference. Result has 345 places, 594 transitions, 10034 flow [2024-06-28 03:57:50,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9383, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10034, PETRI_PLACES=345, PETRI_TRANSITIONS=594} [2024-06-28 03:57:50,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-06-28 03:57:50,390 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 594 transitions, 10034 flow [2024-06-28 03:57:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:50,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:50,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:50,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:57:50,390 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:50,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:50,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1011403425, now seen corresponding path program 4 times [2024-06-28 03:57:50,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:50,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716374134] [2024-06-28 03:57:50,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:50,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:51,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:51,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716374134] [2024-06-28 03:57:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716374134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:51,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:57:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128952312] [2024-06-28 03:57:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:51,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:57:51,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:51,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:57:51,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:57:51,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:51,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 594 transitions, 10034 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:51,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:51,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:51,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:53,014 INFO L124 PetriNetUnfolderBase]: 3988/6296 cut-off events. [2024-06-28 03:57:53,014 INFO L125 PetriNetUnfolderBase]: For 794664/794664 co-relation queries the response was YES. [2024-06-28 03:57:53,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58564 conditions, 6296 events. 3988/6296 cut-off events. For 794664/794664 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 38544 event pairs, 709 based on Foata normal form. 85/6379 useless extension candidates. Maximal degree in co-relation 58407. Up to 5449 conditions per place. [2024-06-28 03:57:53,107 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 553 selfloop transitions, 65 changer transitions 8/631 dead transitions. [2024-06-28 03:57:53,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 631 transitions, 11675 flow [2024-06-28 03:57:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:57:53,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-28 03:57:53,108 INFO L175 Difference]: Start difference. First operand has 345 places, 594 transitions, 10034 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:57:53,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 631 transitions, 11675 flow [2024-06-28 03:57:54,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 631 transitions, 11367 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:54,932 INFO L231 Difference]: Finished difference. Result has 348 places, 595 transitions, 9971 flow [2024-06-28 03:57:54,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9756, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9971, PETRI_PLACES=348, PETRI_TRANSITIONS=595} [2024-06-28 03:57:54,933 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-06-28 03:57:54,933 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 595 transitions, 9971 flow [2024-06-28 03:57:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:54,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:54,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:54,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:57:54,933 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:54,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1011588123, now seen corresponding path program 1 times [2024-06-28 03:57:54,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:54,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618841316] [2024-06-28 03:57:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:55,788 INFO 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 03:57:55,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618841316] [2024-06-28 03:57:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618841316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:55,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:57:55,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493259785] [2024-06-28 03:57:55,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:55,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:57:55,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:55,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:57:55,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:57:55,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:57:55,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 595 transitions, 9971 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:55,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:55,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:57:55,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:57,362 INFO L124 PetriNetUnfolderBase]: 3828/6050 cut-off events. [2024-06-28 03:57:57,362 INFO L125 PetriNetUnfolderBase]: For 578944/578944 co-relation queries the response was YES. [2024-06-28 03:57:57,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57029 conditions, 6050 events. 3828/6050 cut-off events. For 578944/578944 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37153 event pairs, 659 based on Foata normal form. 2/6050 useless extension candidates. Maximal degree in co-relation 56870. Up to 5709 conditions per place. [2024-06-28 03:57:57,450 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 579 selfloop transitions, 29 changer transitions 0/613 dead transitions. [2024-06-28 03:57:57,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 613 transitions, 11287 flow [2024-06-28 03:57:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:57,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:57,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 03:57:57,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298780487804878 [2024-06-28 03:57:57,451 INFO L175 Difference]: Start difference. First operand has 348 places, 595 transitions, 9971 flow. Second operand 8 states and 141 transitions. [2024-06-28 03:57:57,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 613 transitions, 11287 flow [2024-06-28 03:57:59,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 613 transitions, 11102 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:59,532 INFO L231 Difference]: Finished difference. Result has 349 places, 597 transitions, 9903 flow [2024-06-28 03:57:59,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9786, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9903, PETRI_PLACES=349, PETRI_TRANSITIONS=597} [2024-06-28 03:57:59,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-06-28 03:57:59,532 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 597 transitions, 9903 flow [2024-06-28 03:57:59,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:59,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:59,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:59,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:57:59,533 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:59,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 576089217, now seen corresponding path program 6 times [2024-06-28 03:57:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971754966] [2024-06-28 03:57:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971754966] [2024-06-28 03:58:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971754966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632269541] [2024-06-28 03:58:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:00,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:00,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 597 transitions, 9903 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:01,954 INFO L124 PetriNetUnfolderBase]: 3858/6096 cut-off events. [2024-06-28 03:58:01,955 INFO L125 PetriNetUnfolderBase]: For 604245/604245 co-relation queries the response was YES. [2024-06-28 03:58:02,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57273 conditions, 6096 events. 3858/6096 cut-off events. For 604245/604245 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 37496 event pairs, 656 based on Foata normal form. 6/6100 useless extension candidates. Maximal degree in co-relation 57113. Up to 5609 conditions per place. [2024-06-28 03:58:02,045 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 560 selfloop transitions, 60 changer transitions 0/625 dead transitions. [2024-06-28 03:58:02,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 625 transitions, 11463 flow [2024-06-28 03:58:02,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:02,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:58:02,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:58:02,046 INFO L175 Difference]: Start difference. First operand has 349 places, 597 transitions, 9903 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:58:02,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 625 transitions, 11463 flow [2024-06-28 03:58:04,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 625 transitions, 11299 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:04,105 INFO L231 Difference]: Finished difference. Result has 352 places, 604 transitions, 10087 flow [2024-06-28 03:58:04,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9739, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10087, PETRI_PLACES=352, PETRI_TRANSITIONS=604} [2024-06-28 03:58:04,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 03:58:04,106 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 604 transitions, 10087 flow [2024-06-28 03:58:04,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:04,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:04,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:04,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:58:04,106 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:04,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1478072839, now seen corresponding path program 2 times [2024-06-28 03:58:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:04,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329521021] [2024-06-28 03:58:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:04,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:04,889 INFO 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 03:58:04,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:04,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329521021] [2024-06-28 03:58:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329521021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:04,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875742765] [2024-06-28 03:58:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:04,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:04,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:04,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:04,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 604 transitions, 10087 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:04,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:04,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:04,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:06,378 INFO L124 PetriNetUnfolderBase]: 3866/6104 cut-off events. [2024-06-28 03:58:06,378 INFO L125 PetriNetUnfolderBase]: For 607331/607331 co-relation queries the response was YES. [2024-06-28 03:58:06,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57952 conditions, 6104 events. 3866/6104 cut-off events. For 607331/607331 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37477 event pairs, 658 based on Foata normal form. 2/6104 useless extension candidates. Maximal degree in co-relation 57792. Up to 5757 conditions per place. [2024-06-28 03:58:06,466 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 585 selfloop transitions, 31 changer transitions 0/621 dead transitions. [2024-06-28 03:58:06,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 621 transitions, 11421 flow [2024-06-28 03:58:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:06,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 03:58:06,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425087108013937 [2024-06-28 03:58:06,467 INFO L175 Difference]: Start difference. First operand has 352 places, 604 transitions, 10087 flow. Second operand 7 states and 127 transitions. [2024-06-28 03:58:06,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 621 transitions, 11421 flow [2024-06-28 03:58:08,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 621 transitions, 11163 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:08,581 INFO L231 Difference]: Finished difference. Result has 352 places, 606 transitions, 9957 flow [2024-06-28 03:58:08,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9829, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9957, PETRI_PLACES=352, PETRI_TRANSITIONS=606} [2024-06-28 03:58:08,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 03:58:08,582 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 606 transitions, 9957 flow [2024-06-28 03:58:08,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:08,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:08,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:08,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:58:08,582 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:08,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1241600809, now seen corresponding path program 3 times [2024-06-28 03:58:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:08,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126867324] [2024-06-28 03:58:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:09,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:09,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126867324] [2024-06-28 03:58:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126867324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853853422] [2024-06-28 03:58:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:09,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:09,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:09,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:09,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 606 transitions, 9957 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:09,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:09,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:09,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:10,862 INFO L124 PetriNetUnfolderBase]: 3874/6112 cut-off events. [2024-06-28 03:58:10,862 INFO L125 PetriNetUnfolderBase]: For 619581/619581 co-relation queries the response was YES. [2024-06-28 03:58:10,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57904 conditions, 6112 events. 3874/6112 cut-off events. For 619581/619581 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 37514 event pairs, 709 based on Foata normal form. 2/6112 useless extension candidates. Maximal degree in co-relation 57743. Up to 5797 conditions per place. [2024-06-28 03:58:10,958 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 597 selfloop transitions, 16 changer transitions 0/618 dead transitions. [2024-06-28 03:58:10,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 618 transitions, 11267 flow [2024-06-28 03:58:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:58:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:58:10,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 03:58:10,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-28 03:58:10,959 INFO L175 Difference]: Start difference. First operand has 352 places, 606 transitions, 9957 flow. Second operand 6 states and 107 transitions. [2024-06-28 03:58:10,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 618 transitions, 11267 flow [2024-06-28 03:58:13,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 618 transitions, 11155 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:13,188 INFO L231 Difference]: Finished difference. Result has 353 places, 608 transitions, 9944 flow [2024-06-28 03:58:13,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9849, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9944, PETRI_PLACES=353, PETRI_TRANSITIONS=608} [2024-06-28 03:58:13,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 311 predicate places. [2024-06-28 03:58:13,188 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 608 transitions, 9944 flow [2024-06-28 03:58:13,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:13,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:13,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:13,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:58:13,189 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:13,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1241897479, now seen corresponding path program 4 times [2024-06-28 03:58:13,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:13,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744523799] [2024-06-28 03:58:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:13,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:14,052 INFO 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 03:58:14,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:14,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744523799] [2024-06-28 03:58:14,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744523799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:14,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:14,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315383475] [2024-06-28 03:58:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:14,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:14,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:14,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:14,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 608 transitions, 9944 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:14,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:14,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:14,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:15,545 INFO L124 PetriNetUnfolderBase]: 3869/6105 cut-off events. [2024-06-28 03:58:15,546 INFO L125 PetriNetUnfolderBase]: For 612062/612062 co-relation queries the response was YES. [2024-06-28 03:58:15,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57539 conditions, 6105 events. 3869/6105 cut-off events. For 612062/612062 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 37453 event pairs, 664 based on Foata normal form. 2/6105 useless extension candidates. Maximal degree in co-relation 57377. Up to 5748 conditions per place. [2024-06-28 03:58:15,642 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 582 selfloop transitions, 36 changer transitions 0/623 dead transitions. [2024-06-28 03:58:15,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 623 transitions, 11278 flow [2024-06-28 03:58:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:58:15,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:58:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:58:15,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45934959349593496 [2024-06-28 03:58:15,643 INFO L175 Difference]: Start difference. First operand has 353 places, 608 transitions, 9944 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:58:15,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 623 transitions, 11278 flow [2024-06-28 03:58:17,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 623 transitions, 11199 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:17,754 INFO L231 Difference]: Finished difference. Result has 355 places, 610 transitions, 10011 flow [2024-06-28 03:58:17,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9865, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10011, PETRI_PLACES=355, PETRI_TRANSITIONS=610} [2024-06-28 03:58:17,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-28 03:58:17,755 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 610 transitions, 10011 flow [2024-06-28 03:58:17,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:17,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:17,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:17,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:58:17,755 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:17,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:17,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1241897727, now seen corresponding path program 1 times [2024-06-28 03:58:17,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:17,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519734709] [2024-06-28 03:58:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:18,522 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 03:58:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519734709] [2024-06-28 03:58:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519734709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:18,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:18,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391772576] [2024-06-28 03:58:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:18,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:18,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:18,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 610 transitions, 10011 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:18,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:18,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:18,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:20,122 INFO L124 PetriNetUnfolderBase]: 3916/6155 cut-off events. [2024-06-28 03:58:20,123 INFO L125 PetriNetUnfolderBase]: For 642303/642303 co-relation queries the response was YES. [2024-06-28 03:58:20,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58705 conditions, 6155 events. 3916/6155 cut-off events. For 642303/642303 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 37638 event pairs, 675 based on Foata normal form. 5/6158 useless extension candidates. Maximal degree in co-relation 58542. Up to 5423 conditions per place. [2024-06-28 03:58:20,215 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 501 selfloop transitions, 137 changer transitions 0/643 dead transitions. [2024-06-28 03:58:20,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 643 transitions, 11741 flow [2024-06-28 03:58:20,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:20,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 03:58:20,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519163763066202 [2024-06-28 03:58:20,216 INFO L175 Difference]: Start difference. First operand has 355 places, 610 transitions, 10011 flow. Second operand 7 states and 149 transitions. [2024-06-28 03:58:20,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 643 transitions, 11741 flow [2024-06-28 03:58:22,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 643 transitions, 11587 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:22,207 INFO L231 Difference]: Finished difference. Result has 359 places, 619 transitions, 10499 flow [2024-06-28 03:58:22,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=9861, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10499, PETRI_PLACES=359, PETRI_TRANSITIONS=619} [2024-06-28 03:58:22,208 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-28 03:58:22,208 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 619 transitions, 10499 flow [2024-06-28 03:58:22,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:22,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:22,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:22,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:58:22,208 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:22,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash 575911463, now seen corresponding path program 5 times [2024-06-28 03:58:22,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:22,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975671162] [2024-06-28 03:58:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:22,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:23,041 INFO 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 03:58:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975671162] [2024-06-28 03:58:23,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975671162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:23,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:23,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:23,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728326318] [2024-06-28 03:58:23,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:23,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:23,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:23,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 619 transitions, 10499 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:23,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:23,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:23,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:24,883 INFO L124 PetriNetUnfolderBase]: 4208/6620 cut-off events. [2024-06-28 03:58:24,883 INFO L125 PetriNetUnfolderBase]: For 913396/913396 co-relation queries the response was YES. [2024-06-28 03:58:24,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63177 conditions, 6620 events. 4208/6620 cut-off events. For 913396/913396 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 40697 event pairs, 639 based on Foata normal form. 85/6703 useless extension candidates. Maximal degree in co-relation 63012. Up to 5318 conditions per place. [2024-06-28 03:58:24,980 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 537 selfloop transitions, 124 changer transitions 9/675 dead transitions. [2024-06-28 03:58:24,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 675 transitions, 12410 flow [2024-06-28 03:58:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:24,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 03:58:24,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257452574525745 [2024-06-28 03:58:24,982 INFO L175 Difference]: Start difference. First operand has 359 places, 619 transitions, 10499 flow. Second operand 9 states and 194 transitions. [2024-06-28 03:58:24,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 675 transitions, 12410 flow [2024-06-28 03:58:26,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 675 transitions, 12311 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:26,914 INFO L231 Difference]: Finished difference. Result has 366 places, 626 transitions, 10851 flow [2024-06-28 03:58:26,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10400, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10851, PETRI_PLACES=366, PETRI_TRANSITIONS=626} [2024-06-28 03:58:26,915 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-28 03:58:26,915 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 626 transitions, 10851 flow [2024-06-28 03:58:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:26,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:26,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:26,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:58:26,916 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:26,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash 575911587, now seen corresponding path program 7 times [2024-06-28 03:58:26,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:26,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723795884] [2024-06-28 03:58:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:26,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:27,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723795884] [2024-06-28 03:58:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723795884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:58:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615846272] [2024-06-28 03:58:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:27,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:58:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:27,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:58:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:58:27,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:27,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 626 transitions, 10851 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:27,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:27,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:27,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:29,630 INFO L124 PetriNetUnfolderBase]: 4086/6432 cut-off events. [2024-06-28 03:58:29,630 INFO L125 PetriNetUnfolderBase]: For 698164/698164 co-relation queries the response was YES. [2024-06-28 03:58:29,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63776 conditions, 6432 events. 4086/6432 cut-off events. For 698164/698164 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39617 event pairs, 685 based on Foata normal form. 6/6436 useless extension candidates. Maximal degree in co-relation 63608. Up to 5482 conditions per place. [2024-06-28 03:58:29,728 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 495 selfloop transitions, 176 changer transitions 1/677 dead transitions. [2024-06-28 03:58:29,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 677 transitions, 13306 flow [2024-06-28 03:58:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:58:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:58:29,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 03:58:29,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975609756097561 [2024-06-28 03:58:29,729 INFO L175 Difference]: Start difference. First operand has 366 places, 626 transitions, 10851 flow. Second operand 10 states and 204 transitions. [2024-06-28 03:58:29,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 677 transitions, 13306 flow [2024-06-28 03:58:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 677 transitions, 13017 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:32,013 INFO L231 Difference]: Finished difference. Result has 370 places, 638 transitions, 11311 flow [2024-06-28 03:58:32,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10562, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11311, PETRI_PLACES=370, PETRI_TRANSITIONS=638} [2024-06-28 03:58:32,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-28 03:58:32,014 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 638 transitions, 11311 flow [2024-06-28 03:58:32,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:32,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:32,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:32,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:58:32,014 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:32,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:32,014 INFO L85 PathProgramCache]: Analyzing trace with hash 362042091, now seen corresponding path program 1 times [2024-06-28 03:58:32,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:32,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092350814] [2024-06-28 03:58:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:32,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092350814] [2024-06-28 03:58:32,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092350814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:32,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498177799] [2024-06-28 03:58:32,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:32,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:32,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:32,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:32,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:32,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 638 transitions, 11311 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:32,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:32,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:32,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:34,424 INFO L124 PetriNetUnfolderBase]: 4091/6449 cut-off events. [2024-06-28 03:58:34,424 INFO L125 PetriNetUnfolderBase]: For 696755/696755 co-relation queries the response was YES. [2024-06-28 03:58:34,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64327 conditions, 6449 events. 4091/6449 cut-off events. For 696755/696755 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39816 event pairs, 717 based on Foata normal form. 1/6448 useless extension candidates. Maximal degree in co-relation 64158. Up to 6039 conditions per place. [2024-06-28 03:58:34,527 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 612 selfloop transitions, 53 changer transitions 0/670 dead transitions. [2024-06-28 03:58:34,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 670 transitions, 13114 flow [2024-06-28 03:58:34,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:58:34,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:58:34,528 INFO L175 Difference]: Start difference. First operand has 370 places, 638 transitions, 11311 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:58:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 670 transitions, 13114 flow [2024-06-28 03:58:37,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 670 transitions, 12685 flow, removed 122 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:37,475 INFO L231 Difference]: Finished difference. Result has 373 places, 646 transitions, 11254 flow [2024-06-28 03:58:37,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=10882, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11254, PETRI_PLACES=373, PETRI_TRANSITIONS=646} [2024-06-28 03:58:37,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-28 03:58:37,476 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 646 transitions, 11254 flow [2024-06-28 03:58:37,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:37,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:37,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:58:37,476 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:37,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1059754411, now seen corresponding path program 2 times [2024-06-28 03:58:37,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:37,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466636299] [2024-06-28 03:58:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:38,156 INFO 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 03:58:38,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:38,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466636299] [2024-06-28 03:58:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466636299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:38,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:38,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890434194] [2024-06-28 03:58:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:38,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:38,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 646 transitions, 11254 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:38,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:38,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:38,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:39,845 INFO L124 PetriNetUnfolderBase]: 4101/6463 cut-off events. [2024-06-28 03:58:39,845 INFO L125 PetriNetUnfolderBase]: For 709167/709167 co-relation queries the response was YES. [2024-06-28 03:58:39,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64441 conditions, 6463 events. 4101/6463 cut-off events. For 709167/709167 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39937 event pairs, 729 based on Foata normal form. 1/6462 useless extension candidates. Maximal degree in co-relation 64269. Up to 6080 conditions per place. [2024-06-28 03:58:39,945 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 621 selfloop transitions, 46 changer transitions 0/672 dead transitions. [2024-06-28 03:58:39,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 672 transitions, 12771 flow [2024-06-28 03:58:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:58:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:58:39,946 INFO L175 Difference]: Start difference. First operand has 373 places, 646 transitions, 11254 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:58:39,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 672 transitions, 12771 flow [2024-06-28 03:58:42,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 672 transitions, 12564 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:42,834 INFO L231 Difference]: Finished difference. Result has 378 places, 652 transitions, 11276 flow [2024-06-28 03:58:42,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11081, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11276, PETRI_PLACES=378, PETRI_TRANSITIONS=652} [2024-06-28 03:58:42,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 336 predicate places. [2024-06-28 03:58:42,834 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 652 transitions, 11276 flow [2024-06-28 03:58:42,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:42,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:42,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:58:42,835 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:42,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1734568265, now seen corresponding path program 3 times [2024-06-28 03:58:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:42,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484355702] [2024-06-28 03:58:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:42,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:43,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:43,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484355702] [2024-06-28 03:58:43,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484355702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:43,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:43,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:43,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021066578] [2024-06-28 03:58:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:43,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:43,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:43,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:43,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:43,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 652 transitions, 11276 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:43,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:43,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:45,235 INFO L124 PetriNetUnfolderBase]: 4098/6448 cut-off events. [2024-06-28 03:58:45,235 INFO L125 PetriNetUnfolderBase]: For 718097/718097 co-relation queries the response was YES. [2024-06-28 03:58:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64393 conditions, 6448 events. 4098/6448 cut-off events. For 718097/718097 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 39754 event pairs, 719 based on Foata normal form. 1/6447 useless extension candidates. Maximal degree in co-relation 64219. Up to 6076 conditions per place. [2024-06-28 03:58:45,340 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 619 selfloop transitions, 43 changer transitions 0/667 dead transitions. [2024-06-28 03:58:45,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 667 transitions, 12642 flow [2024-06-28 03:58:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:45,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:58:45,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:58:45,341 INFO L175 Difference]: Start difference. First operand has 378 places, 652 transitions, 11276 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:58:45,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 667 transitions, 12642 flow [2024-06-28 03:58:47,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 667 transitions, 12506 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:47,396 INFO L231 Difference]: Finished difference. Result has 381 places, 652 transitions, 11232 flow [2024-06-28 03:58:47,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11140, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11232, PETRI_PLACES=381, PETRI_TRANSITIONS=652} [2024-06-28 03:58:47,397 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-28 03:58:47,397 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 652 transitions, 11232 flow [2024-06-28 03:58:47,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:47,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:47,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:47,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:58:47,397 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:47,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:47,397 INFO L85 PathProgramCache]: Analyzing trace with hash 248954281, now seen corresponding path program 1 times [2024-06-28 03:58:47,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:47,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374302138] [2024-06-28 03:58:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:47,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:48,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:48,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374302138] [2024-06-28 03:58:48,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374302138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:48,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:48,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:48,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583827035] [2024-06-28 03:58:48,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:48,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:48,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 652 transitions, 11232 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:48,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:48,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:48,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:49,902 INFO L124 PetriNetUnfolderBase]: 4106/6471 cut-off events. [2024-06-28 03:58:49,903 INFO L125 PetriNetUnfolderBase]: For 735455/735455 co-relation queries the response was YES. [2024-06-28 03:58:49,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64542 conditions, 6471 events. 4106/6471 cut-off events. For 735455/735455 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40056 event pairs, 688 based on Foata normal form. 2/6471 useless extension candidates. Maximal degree in co-relation 64367. Up to 6030 conditions per place. [2024-06-28 03:58:50,006 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 629 selfloop transitions, 49 changer transitions 0/683 dead transitions. [2024-06-28 03:58:50,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 683 transitions, 12936 flow [2024-06-28 03:58:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 03:58:50,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 03:58:50,007 INFO L175 Difference]: Start difference. First operand has 381 places, 652 transitions, 11232 flow. Second operand 8 states and 152 transitions. [2024-06-28 03:58:50,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 683 transitions, 12936 flow [2024-06-28 03:58:52,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 683 transitions, 12788 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:52,742 INFO L231 Difference]: Finished difference. Result has 384 places, 657 transitions, 11303 flow [2024-06-28 03:58:52,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11084, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11303, PETRI_PLACES=384, PETRI_TRANSITIONS=657} [2024-06-28 03:58:52,743 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 342 predicate places. [2024-06-28 03:58:52,743 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 657 transitions, 11303 flow [2024-06-28 03:58:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:52,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:52,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:58:52,743 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:52,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 249193291, now seen corresponding path program 2 times [2024-06-28 03:58:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051258352] [2024-06-28 03:58:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:53,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051258352] [2024-06-28 03:58:53,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051258352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:53,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:53,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884580692] [2024-06-28 03:58:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 657 transitions, 11303 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:53,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:55,437 INFO L124 PetriNetUnfolderBase]: 4114/6473 cut-off events. [2024-06-28 03:58:55,437 INFO L125 PetriNetUnfolderBase]: For 750464/750464 co-relation queries the response was YES. [2024-06-28 03:58:55,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64939 conditions, 6473 events. 4114/6473 cut-off events. For 750464/750464 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 39915 event pairs, 723 based on Foata normal form. 2/6473 useless extension candidates. Maximal degree in co-relation 64762. Up to 6097 conditions per place. [2024-06-28 03:58:55,698 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 630 selfloop transitions, 45 changer transitions 0/680 dead transitions. [2024-06-28 03:58:55,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 680 transitions, 12761 flow [2024-06-28 03:58:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 03:58:55,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481707317073171 [2024-06-28 03:58:55,699 INFO L175 Difference]: Start difference. First operand has 384 places, 657 transitions, 11303 flow. Second operand 8 states and 147 transitions. [2024-06-28 03:58:55,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 680 transitions, 12761 flow [2024-06-28 03:58:58,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 680 transitions, 12626 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:58,471 INFO L231 Difference]: Finished difference. Result has 388 places, 659 transitions, 11315 flow [2024-06-28 03:58:58,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11315, PETRI_PLACES=388, PETRI_TRANSITIONS=659} [2024-06-28 03:58:58,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 346 predicate places. [2024-06-28 03:58:58,472 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 659 transitions, 11315 flow [2024-06-28 03:58:58,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:58,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:58,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:58,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:58:58,472 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:58,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:58,473 INFO L85 PathProgramCache]: Analyzing trace with hash -754566967, now seen corresponding path program 3 times [2024-06-28 03:58:58,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:58,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54373005] [2024-06-28 03:58:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:59,227 INFO 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 03:58:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54373005] [2024-06-28 03:58:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54373005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:59,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:59,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820228990] [2024-06-28 03:58:59,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:59,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:59,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:58:59,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 659 transitions, 11315 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:59,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:59,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:58:59,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:01,088 INFO L124 PetriNetUnfolderBase]: 4109/6475 cut-off events. [2024-06-28 03:59:01,088 INFO L125 PetriNetUnfolderBase]: For 756469/756469 co-relation queries the response was YES. [2024-06-28 03:59:01,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64795 conditions, 6475 events. 4109/6475 cut-off events. For 756469/756469 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 40021 event pairs, 720 based on Foata normal form. 2/6475 useless extension candidates. Maximal degree in co-relation 64616. Up to 6090 conditions per place. [2024-06-28 03:59:01,180 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 628 selfloop transitions, 42 changer transitions 0/675 dead transitions. [2024-06-28 03:59:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 675 transitions, 12699 flow [2024-06-28 03:59:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:59:01,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329268292682927 [2024-06-28 03:59:01,181 INFO L175 Difference]: Start difference. First operand has 388 places, 659 transitions, 11315 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:59:01,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 675 transitions, 12699 flow [2024-06-28 03:59:03,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 675 transitions, 12568 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:03,550 INFO L231 Difference]: Finished difference. Result has 390 places, 659 transitions, 11273 flow [2024-06-28 03:59:03,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=617, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11273, PETRI_PLACES=390, PETRI_TRANSITIONS=659} [2024-06-28 03:59:03,551 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-28 03:59:03,551 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 659 transitions, 11273 flow [2024-06-28 03:59:03,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:03,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:03,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:03,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:59:03,551 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:03,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash 543227140, now seen corresponding path program 1 times [2024-06-28 03:59:03,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:03,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386160745] [2024-06-28 03:59:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:04,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:04,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386160745] [2024-06-28 03:59:04,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386160745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:04,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:04,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:04,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715873765] [2024-06-28 03:59:04,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:04,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:04,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:04,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 659 transitions, 11273 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:04,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:04,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:04,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:06,105 INFO L124 PetriNetUnfolderBase]: 4161/6548 cut-off events. [2024-06-28 03:59:06,105 INFO L125 PetriNetUnfolderBase]: For 798737/798737 co-relation queries the response was YES. [2024-06-28 03:59:06,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66018 conditions, 6548 events. 4161/6548 cut-off events. For 798737/798737 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40529 event pairs, 725 based on Foata normal form. 4/6550 useless extension candidates. Maximal degree in co-relation 65838. Up to 5936 conditions per place. [2024-06-28 03:59:06,208 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 583 selfloop transitions, 114 changer transitions 0/702 dead transitions. [2024-06-28 03:59:06,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 702 transitions, 13383 flow [2024-06-28 03:59:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:59:06,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46612466124661245 [2024-06-28 03:59:06,211 INFO L175 Difference]: Start difference. First operand has 390 places, 659 transitions, 11273 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:59:06,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 702 transitions, 13383 flow [2024-06-28 03:59:08,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 702 transitions, 13294 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:08,997 INFO L231 Difference]: Finished difference. Result has 393 places, 669 transitions, 11693 flow [2024-06-28 03:59:08,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11184, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11693, PETRI_PLACES=393, PETRI_TRANSITIONS=669} [2024-06-28 03:59:08,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 351 predicate places. [2024-06-28 03:59:08,998 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 669 transitions, 11693 flow [2024-06-28 03:59:08,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:08,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:08,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:08,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:59:08,998 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:08,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash 543226985, now seen corresponding path program 1 times [2024-06-28 03:59:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520140741] [2024-06-28 03:59:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:09,935 INFO 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 03:59:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:09,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520140741] [2024-06-28 03:59:09,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520140741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:09,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:09,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396897363] [2024-06-28 03:59:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:09,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:09,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:10,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:10,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 669 transitions, 11693 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:10,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:10,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:11,881 INFO L124 PetriNetUnfolderBase]: 4166/6561 cut-off events. [2024-06-28 03:59:11,881 INFO L125 PetriNetUnfolderBase]: For 800405/800405 co-relation queries the response was YES. [2024-06-28 03:59:11,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66496 conditions, 6561 events. 4166/6561 cut-off events. For 800405/800405 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40651 event pairs, 737 based on Foata normal form. 1/6560 useless extension candidates. Maximal degree in co-relation 66315. Up to 6165 conditions per place. [2024-06-28 03:59:11,990 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 633 selfloop transitions, 57 changer transitions 0/695 dead transitions. [2024-06-28 03:59:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 695 transitions, 13245 flow [2024-06-28 03:59:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 03:59:11,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281842818428184 [2024-06-28 03:59:11,991 INFO L175 Difference]: Start difference. First operand has 393 places, 669 transitions, 11693 flow. Second operand 9 states and 158 transitions. [2024-06-28 03:59:11,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 695 transitions, 13245 flow [2024-06-28 03:59:14,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 695 transitions, 12979 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:14,638 INFO L231 Difference]: Finished difference. Result has 399 places, 676 transitions, 11707 flow [2024-06-28 03:59:14,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11427, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11707, PETRI_PLACES=399, PETRI_TRANSITIONS=676} [2024-06-28 03:59:14,639 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-06-28 03:59:14,639 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 676 transitions, 11707 flow [2024-06-28 03:59:14,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:14,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:14,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:14,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:59:14,639 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:14,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash 543232720, now seen corresponding path program 2 times [2024-06-28 03:59:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:14,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984369277] [2024-06-28 03:59:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:14,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:15,331 INFO 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 03:59:15,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:15,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984369277] [2024-06-28 03:59:15,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984369277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885758573] [2024-06-28 03:59:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:15,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:15,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 676 transitions, 11707 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:15,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:15,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:15,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:17,160 INFO L124 PetriNetUnfolderBase]: 4154/6539 cut-off events. [2024-06-28 03:59:17,160 INFO L125 PetriNetUnfolderBase]: For 810483/810483 co-relation queries the response was YES. [2024-06-28 03:59:17,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66067 conditions, 6539 events. 4154/6539 cut-off events. For 810483/810483 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 40444 event pairs, 722 based on Foata normal form. 4/6541 useless extension candidates. Maximal degree in co-relation 65882. Up to 5967 conditions per place. [2024-06-28 03:59:17,269 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 587 selfloop transitions, 110 changer transitions 0/702 dead transitions. [2024-06-28 03:59:17,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 702 transitions, 13280 flow [2024-06-28 03:59:17,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:59:17,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2024-06-28 03:59:17,271 INFO L175 Difference]: Start difference. First operand has 399 places, 676 transitions, 11707 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:59:17,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 702 transitions, 13280 flow [2024-06-28 03:59:20,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 702 transitions, 13033 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:20,043 INFO L231 Difference]: Finished difference. Result has 404 places, 676 transitions, 11689 flow [2024-06-28 03:59:20,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11460, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11689, PETRI_PLACES=404, PETRI_TRANSITIONS=676} [2024-06-28 03:59:20,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 362 predicate places. [2024-06-28 03:59:20,043 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 676 transitions, 11689 flow [2024-06-28 03:59:20,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:20,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:20,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:20,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:59:20,044 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:20,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 209318386, now seen corresponding path program 3 times [2024-06-28 03:59:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141200545] [2024-06-28 03:59:20,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:20,687 INFO 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 03:59:20,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:20,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141200545] [2024-06-28 03:59:20,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141200545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:20,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:20,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:20,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237286694] [2024-06-28 03:59:20,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:20,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:20,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:20,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 676 transitions, 11689 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:20,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:20,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:20,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:22,566 INFO L124 PetriNetUnfolderBase]: 4174/6571 cut-off events. [2024-06-28 03:59:22,566 INFO L125 PetriNetUnfolderBase]: For 825284/825284 co-relation queries the response was YES. [2024-06-28 03:59:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66559 conditions, 6571 events. 4174/6571 cut-off events. For 825284/825284 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 40685 event pairs, 726 based on Foata normal form. 4/6573 useless extension candidates. Maximal degree in co-relation 66372. Up to 6139 conditions per place. [2024-06-28 03:59:22,681 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 632 selfloop transitions, 66 changer transitions 0/703 dead transitions. [2024-06-28 03:59:22,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 703 transitions, 13364 flow [2024-06-28 03:59:22,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:59:22,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:59:22,682 INFO L175 Difference]: Start difference. First operand has 404 places, 676 transitions, 11689 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:59:22,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 703 transitions, 13364 flow [2024-06-28 03:59:25,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 703 transitions, 13125 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 03:59:25,978 INFO L231 Difference]: Finished difference. Result has 405 places, 681 transitions, 11737 flow [2024-06-28 03:59:25,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11450, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11737, PETRI_PLACES=405, PETRI_TRANSITIONS=681} [2024-06-28 03:59:25,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-28 03:59:25,978 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 681 transitions, 11737 flow [2024-06-28 03:59:25,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:25,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:25,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:25,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:59:25,979 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:25,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash 100652753, now seen corresponding path program 1 times [2024-06-28 03:59:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757377504] [2024-06-28 03:59:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:25,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757377504] [2024-06-28 03:59:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757377504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980053803] [2024-06-28 03:59:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:26,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:26,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:26,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:26,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:26,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 681 transitions, 11737 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:26,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:26,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:26,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:28,652 INFO L124 PetriNetUnfolderBase]: 4189/6595 cut-off events. [2024-06-28 03:59:28,652 INFO L125 PetriNetUnfolderBase]: For 837272/837272 co-relation queries the response was YES. [2024-06-28 03:59:28,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66873 conditions, 6595 events. 4189/6595 cut-off events. For 837272/837272 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 40852 event pairs, 718 based on Foata normal form. 3/6596 useless extension candidates. Maximal degree in co-relation 66685. Up to 6121 conditions per place. [2024-06-28 03:59:28,765 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 634 selfloop transitions, 67 changer transitions 0/706 dead transitions. [2024-06-28 03:59:28,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 706 transitions, 13374 flow [2024-06-28 03:59:28,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:59:28,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 03:59:28,766 INFO L175 Difference]: Start difference. First operand has 405 places, 681 transitions, 11737 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:59:28,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 706 transitions, 13374 flow [2024-06-28 03:59:32,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 706 transitions, 13143 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:32,385 INFO L231 Difference]: Finished difference. Result has 406 places, 686 transitions, 11804 flow [2024-06-28 03:59:32,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11506, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11804, PETRI_PLACES=406, PETRI_TRANSITIONS=686} [2024-06-28 03:59:32,386 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 364 predicate places. [2024-06-28 03:59:32,386 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 686 transitions, 11804 flow [2024-06-28 03:59:32,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:32,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:32,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:32,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:59:32,386 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:32,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash 429411646, now seen corresponding path program 4 times [2024-06-28 03:59:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709354867] [2024-06-28 03:59:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:33,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709354867] [2024-06-28 03:59:33,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709354867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:33,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:33,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120586104] [2024-06-28 03:59:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:33,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:33,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:33,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:33,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:33,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 686 transitions, 11804 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:33,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:33,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:33,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:34,930 INFO L124 PetriNetUnfolderBase]: 4209/6616 cut-off events. [2024-06-28 03:59:34,930 INFO L125 PetriNetUnfolderBase]: For 860825/860825 co-relation queries the response was YES. [2024-06-28 03:59:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67569 conditions, 6616 events. 4209/6616 cut-off events. For 860825/860825 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 40941 event pairs, 728 based on Foata normal form. 4/6618 useless extension candidates. Maximal degree in co-relation 67380. Up to 6230 conditions per place. [2024-06-28 03:59:35,046 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 657 selfloop transitions, 49 changer transitions 0/711 dead transitions. [2024-06-28 03:59:35,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 711 transitions, 13472 flow [2024-06-28 03:59:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:35,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:59:35,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 03:59:35,047 INFO L175 Difference]: Start difference. First operand has 406 places, 686 transitions, 11804 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:59:35,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 711 transitions, 13472 flow [2024-06-28 03:59:38,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 711 transitions, 13245 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:38,633 INFO L231 Difference]: Finished difference. Result has 408 places, 691 transitions, 11840 flow [2024-06-28 03:59:38,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11577, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11840, PETRI_PLACES=408, PETRI_TRANSITIONS=691} [2024-06-28 03:59:38,633 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-28 03:59:38,634 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 691 transitions, 11840 flow [2024-06-28 03:59:38,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:38,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:38,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:38,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:59:38,634 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:38,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1739336964, now seen corresponding path program 5 times [2024-06-28 03:59:38,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:38,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901771179] [2024-06-28 03:59:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:38,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:39,253 INFO 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 03:59:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901771179] [2024-06-28 03:59:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901771179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428796999] [2024-06-28 03:59:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:39,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:39,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 691 transitions, 11840 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:41,261 INFO L124 PetriNetUnfolderBase]: 4229/6648 cut-off events. [2024-06-28 03:59:41,261 INFO L125 PetriNetUnfolderBase]: For 862678/862678 co-relation queries the response was YES. [2024-06-28 03:59:41,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67760 conditions, 6648 events. 4229/6648 cut-off events. For 862678/862678 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 41266 event pairs, 721 based on Foata normal form. 4/6650 useless extension candidates. Maximal degree in co-relation 67571. Up to 6164 conditions per place. [2024-06-28 03:59:41,371 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 639 selfloop transitions, 75 changer transitions 0/719 dead transitions. [2024-06-28 03:59:41,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 719 transitions, 13584 flow [2024-06-28 03:59:41,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:41,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:59:41,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2024-06-28 03:59:41,372 INFO L175 Difference]: Start difference. First operand has 408 places, 691 transitions, 11840 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:59:41,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 719 transitions, 13584 flow [2024-06-28 03:59:44,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 719 transitions, 13377 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:44,894 INFO L231 Difference]: Finished difference. Result has 410 places, 696 transitions, 11958 flow [2024-06-28 03:59:44,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11633, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11958, PETRI_PLACES=410, PETRI_TRANSITIONS=696} [2024-06-28 03:59:44,895 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-28 03:59:44,895 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 696 transitions, 11958 flow [2024-06-28 03:59:44,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:44,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:59:44,895 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:44,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1739336809, now seen corresponding path program 2 times [2024-06-28 03:59:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335764314] [2024-06-28 03:59:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:45,612 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 03:59:45,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:45,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335764314] [2024-06-28 03:59:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335764314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:45,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466379442] [2024-06-28 03:59:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:45,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:45,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:45,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 696 transitions, 11958 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:45,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:45,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:45,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:47,585 INFO L124 PetriNetUnfolderBase]: 4239/6658 cut-off events. [2024-06-28 03:59:47,585 INFO L125 PetriNetUnfolderBase]: For 868350/868350 co-relation queries the response was YES. [2024-06-28 03:59:47,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67994 conditions, 6658 events. 4239/6658 cut-off events. For 868350/868350 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 41176 event pairs, 732 based on Foata normal form. 2/6658 useless extension candidates. Maximal degree in co-relation 67804. Up to 6282 conditions per place. [2024-06-28 03:59:47,684 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 659 selfloop transitions, 55 changer transitions 0/719 dead transitions. [2024-06-28 03:59:47,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 719 transitions, 13578 flow [2024-06-28 03:59:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 03:59:47,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254742547425474 [2024-06-28 03:59:47,685 INFO L175 Difference]: Start difference. First operand has 410 places, 696 transitions, 11958 flow. Second operand 9 states and 157 transitions. [2024-06-28 03:59:47,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 719 transitions, 13578 flow [2024-06-28 03:59:50,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 719 transitions, 13309 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:50,882 INFO L231 Difference]: Finished difference. Result has 412 places, 702 transitions, 11952 flow [2024-06-28 03:59:50,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11689, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11952, PETRI_PLACES=412, PETRI_TRANSITIONS=702} [2024-06-28 03:59:50,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 03:59:50,883 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 702 transitions, 11952 flow [2024-06-28 03:59:50,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:50,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:50,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:59:50,883 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:50,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash -705981653, now seen corresponding path program 4 times [2024-06-28 03:59:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:50,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767623087] [2024-06-28 03:59:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:50,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:51,578 INFO 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 03:59:51,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:51,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767623087] [2024-06-28 03:59:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767623087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328689170] [2024-06-28 03:59:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:51,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:51,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:51,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:51,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 702 transitions, 11952 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:51,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:51,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:51,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:53,566 INFO L124 PetriNetUnfolderBase]: 4234/6657 cut-off events. [2024-06-28 03:59:53,566 INFO L125 PetriNetUnfolderBase]: For 877442/877442 co-relation queries the response was YES. [2024-06-28 03:59:53,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67682 conditions, 6657 events. 4234/6657 cut-off events. For 877442/877442 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 41265 event pairs, 728 based on Foata normal form. 3/6658 useless extension candidates. Maximal degree in co-relation 67491. Up to 6241 conditions per place. [2024-06-28 03:59:53,670 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 670 selfloop transitions, 54 changer transitions 0/729 dead transitions. [2024-06-28 03:59:53,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 729 transitions, 13566 flow [2024-06-28 03:59:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:59:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:59:53,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2024-06-28 03:59:53,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052264808362369 [2024-06-28 03:59:53,671 INFO L175 Difference]: Start difference. First operand has 412 places, 702 transitions, 11952 flow. Second operand 7 states and 145 transitions. [2024-06-28 03:59:53,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 729 transitions, 13566 flow [2024-06-28 03:59:56,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 729 transitions, 13344 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:57,003 INFO L231 Difference]: Finished difference. Result has 412 places, 705 transitions, 11950 flow [2024-06-28 03:59:57,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11730, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11950, PETRI_PLACES=412, PETRI_TRANSITIONS=705} [2024-06-28 03:59:57,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 370 predicate places. [2024-06-28 03:59:57,004 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 705 transitions, 11950 flow [2024-06-28 03:59:57,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:57,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:57,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:57,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:59:57,004 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:57,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:57,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2027244439, now seen corresponding path program 3 times [2024-06-28 03:59:57,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:57,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549789077] [2024-06-28 03:59:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:57,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:57,997 INFO 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 03:59:57,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549789077] [2024-06-28 03:59:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549789077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:57,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:59:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536075912] [2024-06-28 03:59:57,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:59:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:59:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:59:58,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 03:59:58,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 705 transitions, 11950 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:58,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:58,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 03:59:58,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:59,989 INFO L124 PetriNetUnfolderBase]: 4231/6650 cut-off events. [2024-06-28 03:59:59,989 INFO L125 PetriNetUnfolderBase]: For 878761/878761 co-relation queries the response was YES. [2024-06-28 04:00:00,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67665 conditions, 6650 events. 4231/6650 cut-off events. For 878761/878761 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 41289 event pairs, 745 based on Foata normal form. 1/6644 useless extension candidates. Maximal degree in co-relation 67473. Up to 6142 conditions per place. [2024-06-28 04:00:00,099 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 633 selfloop transitions, 86 changer transitions 0/724 dead transitions. [2024-06-28 04:00:00,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 724 transitions, 13469 flow [2024-06-28 04:00:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:00,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:00:00,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43360433604336046 [2024-06-28 04:00:00,100 INFO L175 Difference]: Start difference. First operand has 412 places, 705 transitions, 11950 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:00:00,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 724 transitions, 13469 flow [2024-06-28 04:00:03,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 724 transitions, 13265 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:03,884 INFO L231 Difference]: Finished difference. Result has 415 places, 707 transitions, 11957 flow [2024-06-28 04:00:03,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11746, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11957, PETRI_PLACES=415, PETRI_TRANSITIONS=707} [2024-06-28 04:00:03,885 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-28 04:00:03,885 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 707 transitions, 11957 flow [2024-06-28 04:00:03,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:03,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:03,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:03,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:00:03,885 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:03,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash -570218166, now seen corresponding path program 6 times [2024-06-28 04:00:03,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:03,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531894273] [2024-06-28 04:00:03,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:03,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:04,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531894273] [2024-06-28 04:00:04,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531894273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:04,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:04,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:04,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526568482] [2024-06-28 04:00:04,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:04,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:04,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:04,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:04,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:04,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:04,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 707 transitions, 11957 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:04,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:04,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:04,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:06,551 INFO L124 PetriNetUnfolderBase]: 4251/6685 cut-off events. [2024-06-28 04:00:06,551 INFO L125 PetriNetUnfolderBase]: For 909664/909664 co-relation queries the response was YES. [2024-06-28 04:00:06,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68153 conditions, 6685 events. 4251/6685 cut-off events. For 909664/909664 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41473 event pairs, 630 based on Foata normal form. 4/6683 useless extension candidates. Maximal degree in co-relation 67961. Up to 5253 conditions per place. [2024-06-28 04:00:06,664 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 489 selfloop transitions, 251 changer transitions 1/746 dead transitions. [2024-06-28 04:00:06,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 746 transitions, 14519 flow [2024-06-28 04:00:06,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:06,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 04:00:06,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823848238482385 [2024-06-28 04:00:06,665 INFO L175 Difference]: Start difference. First operand has 415 places, 707 transitions, 11957 flow. Second operand 9 states and 178 transitions. [2024-06-28 04:00:06,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 746 transitions, 14519 flow [2024-06-28 04:00:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 746 transitions, 14316 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:10,812 INFO L231 Difference]: Finished difference. Result has 419 places, 712 transitions, 12431 flow [2024-06-28 04:00:10,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11754, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12431, PETRI_PLACES=419, PETRI_TRANSITIONS=712} [2024-06-28 04:00:10,812 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 04:00:10,812 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 712 transitions, 12431 flow [2024-06-28 04:00:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:00:10,813 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:10,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -794792104, now seen corresponding path program 7 times [2024-06-28 04:00:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909813001] [2024-06-28 04:00:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:11,508 INFO 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 04:00:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909813001] [2024-06-28 04:00:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909813001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:11,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:11,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111779222] [2024-06-28 04:00:11,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:11,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:11,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:11,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:11,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:11,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:11,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 712 transitions, 12431 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:11,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:11,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:11,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:13,447 INFO L124 PetriNetUnfolderBase]: 4239/6675 cut-off events. [2024-06-28 04:00:13,447 INFO L125 PetriNetUnfolderBase]: For 908540/908540 co-relation queries the response was YES. [2024-06-28 04:00:13,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68199 conditions, 6675 events. 4239/6675 cut-off events. For 908540/908540 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 41510 event pairs, 624 based on Foata normal form. 4/6673 useless extension candidates. Maximal degree in co-relation 68008. Up to 5245 conditions per place. [2024-06-28 04:00:13,558 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 486 selfloop transitions, 251 changer transitions 1/743 dead transitions. [2024-06-28 04:00:13,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 743 transitions, 14590 flow [2024-06-28 04:00:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:13,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 04:00:13,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742547425474255 [2024-06-28 04:00:13,559 INFO L175 Difference]: Start difference. First operand has 419 places, 712 transitions, 12431 flow. Second operand 9 states and 175 transitions. [2024-06-28 04:00:13,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 743 transitions, 14590 flow [2024-06-28 04:00:17,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 743 transitions, 13471 flow, removed 132 selfloop flow, removed 10 redundant places. [2024-06-28 04:00:17,641 INFO L231 Difference]: Finished difference. Result has 418 places, 712 transitions, 11823 flow [2024-06-28 04:00:17,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11312, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11823, PETRI_PLACES=418, PETRI_TRANSITIONS=712} [2024-06-28 04:00:17,641 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-28 04:00:17,641 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 712 transitions, 11823 flow [2024-06-28 04:00:17,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:17,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:17,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:17,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:00:17,642 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:17,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1084659845, now seen corresponding path program 4 times [2024-06-28 04:00:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:17,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124474366] [2024-06-28 04:00:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:18,327 INFO 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 04:00:18,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:18,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124474366] [2024-06-28 04:00:18,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124474366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:18,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:18,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:18,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178787164] [2024-06-28 04:00:18,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:18,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:18,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:18,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:18,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 712 transitions, 11823 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:18,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:18,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:18,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:20,171 INFO L124 PetriNetUnfolderBase]: 4252/6686 cut-off events. [2024-06-28 04:00:20,172 INFO L125 PetriNetUnfolderBase]: For 909413/909413 co-relation queries the response was YES. [2024-06-28 04:00:20,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67305 conditions, 6686 events. 4252/6686 cut-off events. For 909413/909413 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41484 event pairs, 740 based on Foata normal form. 1/6681 useless extension candidates. Maximal degree in co-relation 67116. Up to 6153 conditions per place. [2024-06-28 04:00:20,275 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 642 selfloop transitions, 91 changer transitions 0/738 dead transitions. [2024-06-28 04:00:20,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 738 transitions, 13719 flow [2024-06-28 04:00:20,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:20,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:20,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:00:20,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4573170731707317 [2024-06-28 04:00:20,276 INFO L175 Difference]: Start difference. First operand has 418 places, 712 transitions, 11823 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:00:20,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 738 transitions, 13719 flow [2024-06-28 04:00:24,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 738 transitions, 13202 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:24,105 INFO L231 Difference]: Finished difference. Result has 418 places, 718 transitions, 11668 flow [2024-06-28 04:00:24,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11306, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11668, PETRI_PLACES=418, PETRI_TRANSITIONS=718} [2024-06-28 04:00:24,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-28 04:00:24,106 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 718 transitions, 11668 flow [2024-06-28 04:00:24,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:24,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:24,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:24,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:00:24,106 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:24,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1625585005, now seen corresponding path program 5 times [2024-06-28 04:00:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:24,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767813829] [2024-06-28 04:00:24,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:24,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:24,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:24,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767813829] [2024-06-28 04:00:24,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767813829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:24,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:24,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:24,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518647368] [2024-06-28 04:00:24,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:24,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:24,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:25,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:25,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 718 transitions, 11668 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:25,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:25,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:25,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:26,859 INFO L124 PetriNetUnfolderBase]: 4257/6691 cut-off events. [2024-06-28 04:00:26,859 INFO L125 PetriNetUnfolderBase]: For 926439/926439 co-relation queries the response was YES. [2024-06-28 04:00:26,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67239 conditions, 6691 events. 4257/6691 cut-off events. For 926439/926439 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 41573 event pairs, 748 based on Foata normal form. 1/6686 useless extension candidates. Maximal degree in co-relation 67049. Up to 6179 conditions per place. [2024-06-28 04:00:26,965 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 646 selfloop transitions, 86 changer transitions 0/737 dead transitions. [2024-06-28 04:00:26,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 737 transitions, 13268 flow [2024-06-28 04:00:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:00:26,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451219512195122 [2024-06-28 04:00:26,967 INFO L175 Difference]: Start difference. First operand has 418 places, 718 transitions, 11668 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:00:26,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 737 transitions, 13268 flow [2024-06-28 04:00:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 737 transitions, 13019 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:31,655 INFO L231 Difference]: Finished difference. Result has 422 places, 721 transitions, 11693 flow [2024-06-28 04:00:31,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11453, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11693, PETRI_PLACES=422, PETRI_TRANSITIONS=721} [2024-06-28 04:00:31,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-28 04:00:31,656 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 721 transitions, 11693 flow [2024-06-28 04:00:31,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:31,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:31,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:31,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:00:31,656 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:31,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash 61032479, now seen corresponding path program 6 times [2024-06-28 04:00:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:31,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164218027] [2024-06-28 04:00:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:32,428 INFO 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 04:00:32,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:32,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164218027] [2024-06-28 04:00:32,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164218027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:32,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:32,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779202977] [2024-06-28 04:00:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:32,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:32,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:32,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:32,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:32,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 721 transitions, 11693 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:32,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:32,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:32,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:34,389 INFO L124 PetriNetUnfolderBase]: 4275/6714 cut-off events. [2024-06-28 04:00:34,389 INFO L125 PetriNetUnfolderBase]: For 954110/954110 co-relation queries the response was YES. [2024-06-28 04:00:34,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67931 conditions, 6714 events. 4275/6714 cut-off events. For 954110/954110 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 41741 event pairs, 746 based on Foata normal form. 2/6710 useless extension candidates. Maximal degree in co-relation 67739. Up to 5888 conditions per place. [2024-06-28 04:00:34,500 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 551 selfloop transitions, 199 changer transitions 0/755 dead transitions. [2024-06-28 04:00:34,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 755 transitions, 13951 flow [2024-06-28 04:00:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 04:00:34,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4658536585365854 [2024-06-28 04:00:34,502 INFO L175 Difference]: Start difference. First operand has 422 places, 721 transitions, 11693 flow. Second operand 10 states and 191 transitions. [2024-06-28 04:00:34,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 755 transitions, 13951 flow [2024-06-28 04:00:39,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 755 transitions, 13739 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:39,056 INFO L231 Difference]: Finished difference. Result has 426 places, 729 transitions, 12172 flow [2024-06-28 04:00:39,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11481, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12172, PETRI_PLACES=426, PETRI_TRANSITIONS=729} [2024-06-28 04:00:39,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2024-06-28 04:00:39,057 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 729 transitions, 12172 flow [2024-06-28 04:00:39,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:39,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:39,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:39,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:00:39,057 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:39,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:39,057 INFO L85 PathProgramCache]: Analyzing trace with hash -568560459, now seen corresponding path program 7 times [2024-06-28 04:00:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:39,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496807221] [2024-06-28 04:00:39,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:39,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:39,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496807221] [2024-06-28 04:00:39,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496807221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:39,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:39,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:39,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795113169] [2024-06-28 04:00:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:39,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:39,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:40,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:40,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 729 transitions, 12172 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:40,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:40,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:40,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:42,020 INFO L124 PetriNetUnfolderBase]: 4290/6741 cut-off events. [2024-06-28 04:00:42,020 INFO L125 PetriNetUnfolderBase]: For 984746/984746 co-relation queries the response was YES. [2024-06-28 04:00:42,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69172 conditions, 6741 events. 4290/6741 cut-off events. For 984746/984746 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 41952 event pairs, 744 based on Foata normal form. 3/6738 useless extension candidates. Maximal degree in co-relation 68979. Up to 5965 conditions per place. [2024-06-28 04:00:42,135 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 549 selfloop transitions, 205 changer transitions 0/759 dead transitions. [2024-06-28 04:00:42,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 759 transitions, 14164 flow [2024-06-28 04:00:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:00:42,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:00:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-28 04:00:42,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-28 04:00:42,136 INFO L175 Difference]: Start difference. First operand has 426 places, 729 transitions, 12172 flow. Second operand 12 states and 214 transitions. [2024-06-28 04:00:42,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 759 transitions, 14164 flow [2024-06-28 04:00:46,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 759 transitions, 13740 flow, removed 119 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:46,402 INFO L231 Difference]: Finished difference. Result has 432 places, 736 transitions, 12397 flow [2024-06-28 04:00:46,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11804, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12397, PETRI_PLACES=432, PETRI_TRANSITIONS=736} [2024-06-28 04:00:46,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-28 04:00:46,403 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 736 transitions, 12397 flow [2024-06-28 04:00:46,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:46,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:46,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:46,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:00:46,403 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:46,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:46,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1468980640, now seen corresponding path program 8 times [2024-06-28 04:00:46,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004877002] [2024-06-28 04:00:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:46,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:47,171 INFO 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 04:00:47,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:47,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004877002] [2024-06-28 04:00:47,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004877002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:47,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:47,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:47,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782368312] [2024-06-28 04:00:47,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:47,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:47,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:47,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:47,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 736 transitions, 12397 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:47,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:47,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:47,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:49,195 INFO L124 PetriNetUnfolderBase]: 4310/6764 cut-off events. [2024-06-28 04:00:49,195 INFO L125 PetriNetUnfolderBase]: For 986814/986814 co-relation queries the response was YES. [2024-06-28 04:00:49,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69325 conditions, 6764 events. 4310/6764 cut-off events. For 986814/986814 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 42047 event pairs, 631 based on Foata normal form. 4/6762 useless extension candidates. Maximal degree in co-relation 69131. Up to 5332 conditions per place. [2024-06-28 04:00:49,313 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 473 selfloop transitions, 290 changer transitions 1/769 dead transitions. [2024-06-28 04:00:49,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 769 transitions, 14675 flow [2024-06-28 04:00:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 04:00:49,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560975609756098 [2024-06-28 04:00:49,314 INFO L175 Difference]: Start difference. First operand has 432 places, 736 transitions, 12397 flow. Second operand 10 states and 187 transitions. [2024-06-28 04:00:49,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 769 transitions, 14675 flow [2024-06-28 04:00:53,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 769 transitions, 14160 flow, removed 58 selfloop flow, removed 10 redundant places. [2024-06-28 04:00:53,585 INFO L231 Difference]: Finished difference. Result has 432 places, 741 transitions, 12601 flow [2024-06-28 04:00:53,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11882, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12601, PETRI_PLACES=432, PETRI_TRANSITIONS=741} [2024-06-28 04:00:53,585 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-28 04:00:53,585 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 741 transitions, 12601 flow [2024-06-28 04:00:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:53,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:53,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:53,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:00:53,585 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:53,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:53,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1095849760, now seen corresponding path program 9 times [2024-06-28 04:00:53,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:53,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839323076] [2024-06-28 04:00:53,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:54,261 INFO 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 04:00:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:54,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839323076] [2024-06-28 04:00:54,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839323076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:54,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:54,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042952309] [2024-06-28 04:00:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:54,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:54,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:54,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:54,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:54,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:00:54,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 741 transitions, 12601 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:54,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:54,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:00:54,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:56,178 INFO L124 PetriNetUnfolderBase]: 4298/6746 cut-off events. [2024-06-28 04:00:56,178 INFO L125 PetriNetUnfolderBase]: For 981998/981998 co-relation queries the response was YES. [2024-06-28 04:00:56,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69202 conditions, 6746 events. 4298/6746 cut-off events. For 981998/981998 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 41935 event pairs, 627 based on Foata normal form. 4/6744 useless extension candidates. Maximal degree in co-relation 69007. Up to 5324 conditions per place. [2024-06-28 04:00:56,290 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 477 selfloop transitions, 288 changer transitions 1/771 dead transitions. [2024-06-28 04:00:56,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 771 transitions, 14789 flow [2024-06-28 04:00:56,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 04:00:56,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2024-06-28 04:00:56,291 INFO L175 Difference]: Start difference. First operand has 432 places, 741 transitions, 12601 flow. Second operand 9 states and 177 transitions. [2024-06-28 04:00:56,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 771 transitions, 14789 flow [2024-06-28 04:01:01,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 771 transitions, 14287 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:01,338 INFO L231 Difference]: Finished difference. Result has 434 places, 741 transitions, 12684 flow [2024-06-28 04:01:01,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12099, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12684, PETRI_PLACES=434, PETRI_TRANSITIONS=741} [2024-06-28 04:01:01,338 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-28 04:01:01,338 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 741 transitions, 12684 flow [2024-06-28 04:01:01,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:01,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:01,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:01,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:01:01,338 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:01,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:01,339 INFO L85 PathProgramCache]: Analyzing trace with hash 748039614, now seen corresponding path program 10 times [2024-06-28 04:01:01,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057218118] [2024-06-28 04:01:01,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:02,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057218118] [2024-06-28 04:01:02,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057218118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:02,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:02,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:02,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749499722] [2024-06-28 04:01:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:02,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:02,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:02,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 741 transitions, 12684 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:02,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:02,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:02,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:04,099 INFO L124 PetriNetUnfolderBase]: 4286/6743 cut-off events. [2024-06-28 04:01:04,099 INFO L125 PetriNetUnfolderBase]: For 978620/978620 co-relation queries the response was YES. [2024-06-28 04:01:04,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68694 conditions, 6743 events. 4286/6743 cut-off events. For 978620/978620 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 42063 event pairs, 660 based on Foata normal form. 4/6745 useless extension candidates. Maximal degree in co-relation 68498. Up to 6219 conditions per place. [2024-06-28 04:01:04,216 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 690 selfloop transitions, 69 changer transitions 0/764 dead transitions. [2024-06-28 04:01:04,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 764 transitions, 14518 flow [2024-06-28 04:01:04,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:04,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 04:01:04,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44878048780487806 [2024-06-28 04:01:04,217 INFO L175 Difference]: Start difference. First operand has 434 places, 741 transitions, 12684 flow. Second operand 10 states and 184 transitions. [2024-06-28 04:01:04,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 764 transitions, 14518 flow [2024-06-28 04:01:08,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 764 transitions, 13422 flow, removed 76 selfloop flow, removed 11 redundant places. [2024-06-28 04:01:08,602 INFO L231 Difference]: Finished difference. Result has 433 places, 741 transitions, 11742 flow [2024-06-28 04:01:08,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11596, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11742, PETRI_PLACES=433, PETRI_TRANSITIONS=741} [2024-06-28 04:01:08,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-28 04:01:08,602 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 741 transitions, 11742 flow [2024-06-28 04:01:08,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:08,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:08,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:08,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:01:08,603 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:08,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:08,603 INFO L85 PathProgramCache]: Analyzing trace with hash 747593989, now seen corresponding path program 8 times [2024-06-28 04:01:08,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:08,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856847967] [2024-06-28 04:01:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:09,437 INFO 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 04:01:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856847967] [2024-06-28 04:01:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856847967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:09,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:09,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878386698] [2024-06-28 04:01:09,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:09,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:09,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:09,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:09,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 741 transitions, 11742 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:09,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:09,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:09,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:11,368 INFO L124 PetriNetUnfolderBase]: 4316/6787 cut-off events. [2024-06-28 04:01:11,368 INFO L125 PetriNetUnfolderBase]: For 997536/997536 co-relation queries the response was YES. [2024-06-28 04:01:11,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67887 conditions, 6787 events. 4316/6787 cut-off events. For 997536/997536 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 42284 event pairs, 684 based on Foata normal form. 6/6791 useless extension candidates. Maximal degree in co-relation 67692. Up to 6337 conditions per place. [2024-06-28 04:01:11,480 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 707 selfloop transitions, 58 changer transitions 0/770 dead transitions. [2024-06-28 04:01:11,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 770 transitions, 13628 flow [2024-06-28 04:01:11,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:11,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:01:11,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45257452574525747 [2024-06-28 04:01:11,481 INFO L175 Difference]: Start difference. First operand has 433 places, 741 transitions, 11742 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:01:11,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 770 transitions, 13628 flow [2024-06-28 04:01:16,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 770 transitions, 13453 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 04:01:16,421 INFO L231 Difference]: Finished difference. Result has 433 places, 751 transitions, 12007 flow [2024-06-28 04:01:16,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11567, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12007, PETRI_PLACES=433, PETRI_TRANSITIONS=751} [2024-06-28 04:01:16,422 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-28 04:01:16,422 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 751 transitions, 12007 flow [2024-06-28 04:01:16,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:16,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:16,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:16,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:01:16,422 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:16,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1280160464, now seen corresponding path program 11 times [2024-06-28 04:01:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264465418] [2024-06-28 04:01:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264465418] [2024-06-28 04:01:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264465418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:17,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586712954] [2024-06-28 04:01:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:17,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:17,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 751 transitions, 12007 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:17,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:17,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:17,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:19,166 INFO L124 PetriNetUnfolderBase]: 4304/6765 cut-off events. [2024-06-28 04:01:19,166 INFO L125 PetriNetUnfolderBase]: For 985471/985471 co-relation queries the response was YES. [2024-06-28 04:01:19,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67943 conditions, 6765 events. 4304/6765 cut-off events. For 985471/985471 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 42129 event pairs, 658 based on Foata normal form. 4/6767 useless extension candidates. Maximal degree in co-relation 67747. Up to 6253 conditions per place. [2024-06-28 04:01:19,281 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 699 selfloop transitions, 69 changer transitions 0/773 dead transitions. [2024-06-28 04:01:19,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 773 transitions, 13635 flow [2024-06-28 04:01:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 04:01:19,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44634146341463415 [2024-06-28 04:01:19,282 INFO L175 Difference]: Start difference. First operand has 433 places, 751 transitions, 12007 flow. Second operand 10 states and 183 transitions. [2024-06-28 04:01:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 773 transitions, 13635 flow [2024-06-28 04:01:24,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 773 transitions, 13251 flow, removed 141 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:24,158 INFO L231 Difference]: Finished difference. Result has 436 places, 751 transitions, 11770 flow [2024-06-28 04:01:24,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11623, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11770, PETRI_PLACES=436, PETRI_TRANSITIONS=751} [2024-06-28 04:01:24,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-28 04:01:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 751 transitions, 11770 flow [2024-06-28 04:01:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:24,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:24,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:01:24,160 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:24,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1288725609, now seen corresponding path program 9 times [2024-06-28 04:01:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:24,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490289397] [2024-06-28 04:01:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:24,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:24,916 INFO 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 04:01:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490289397] [2024-06-28 04:01:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490289397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388341223] [2024-06-28 04:01:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:24,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:24,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:24,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:24,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 751 transitions, 11770 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:24,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:24,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:24,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:26,890 INFO L124 PetriNetUnfolderBase]: 4319/6800 cut-off events. [2024-06-28 04:01:26,890 INFO L125 PetriNetUnfolderBase]: For 992770/992770 co-relation queries the response was YES. [2024-06-28 04:01:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67952 conditions, 6800 events. 4319/6800 cut-off events. For 992770/992770 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42480 event pairs, 677 based on Foata normal form. 3/6801 useless extension candidates. Maximal degree in co-relation 67755. Up to 6341 conditions per place. [2024-06-28 04:01:27,007 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 711 selfloop transitions, 62 changer transitions 0/778 dead transitions. [2024-06-28 04:01:27,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 778 transitions, 13566 flow [2024-06-28 04:01:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:01:27,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 04:01:27,008 INFO L175 Difference]: Start difference. First operand has 436 places, 751 transitions, 11770 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:01:27,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 778 transitions, 13566 flow [2024-06-28 04:01:32,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 778 transitions, 13362 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 04:01:32,377 INFO L231 Difference]: Finished difference. Result has 436 places, 759 transitions, 11916 flow [2024-06-28 04:01:32,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11566, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11916, PETRI_PLACES=436, PETRI_TRANSITIONS=759} [2024-06-28 04:01:32,378 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 394 predicate places. [2024-06-28 04:01:32,378 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 759 transitions, 11916 flow [2024-06-28 04:01:32,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:32,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:32,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:01:32,379 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:32,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1410081970, now seen corresponding path program 12 times [2024-06-28 04:01:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:32,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142021712] [2024-06-28 04:01:32,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:33,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142021712] [2024-06-28 04:01:33,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142021712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:33,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:33,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:33,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437722043] [2024-06-28 04:01:33,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:33,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:33,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 759 transitions, 11916 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:33,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:33,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:33,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:35,145 INFO L124 PetriNetUnfolderBase]: 4339/6822 cut-off events. [2024-06-28 04:01:35,146 INFO L125 PetriNetUnfolderBase]: For 1018883/1018883 co-relation queries the response was YES. [2024-06-28 04:01:35,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68623 conditions, 6822 events. 4339/6822 cut-off events. For 1018883/1018883 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 42552 event pairs, 684 based on Foata normal form. 4/6824 useless extension candidates. Maximal degree in co-relation 68425. Up to 5966 conditions per place. [2024-06-28 04:01:35,261 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 664 selfloop transitions, 130 changer transitions 1/800 dead transitions. [2024-06-28 04:01:35,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 800 transitions, 14356 flow [2024-06-28 04:01:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:35,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 04:01:35,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:01:35,262 INFO L175 Difference]: Start difference. First operand has 436 places, 759 transitions, 11916 flow. Second operand 9 states and 180 transitions. [2024-06-28 04:01:35,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 800 transitions, 14356 flow [2024-06-28 04:01:40,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 800 transitions, 14112 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:40,471 INFO L231 Difference]: Finished difference. Result has 439 places, 764 transitions, 12052 flow [2024-06-28 04:01:40,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11672, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12052, PETRI_PLACES=439, PETRI_TRANSITIONS=764} [2024-06-28 04:01:40,472 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 04:01:40,472 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 764 transitions, 12052 flow [2024-06-28 04:01:40,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:40,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:40,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:40,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:01:40,472 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:40,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -701207374, now seen corresponding path program 13 times [2024-06-28 04:01:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:40,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476077899] [2024-06-28 04:01:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:41,130 INFO 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 04:01:41,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476077899] [2024-06-28 04:01:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476077899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:41,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546180075] [2024-06-28 04:01:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:41,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:41,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:41,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:41,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 764 transitions, 12052 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:41,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:41,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:43,105 INFO L124 PetriNetUnfolderBase]: 4359/6847 cut-off events. [2024-06-28 04:01:43,105 INFO L125 PetriNetUnfolderBase]: For 1035916/1035916 co-relation queries the response was YES. [2024-06-28 04:01:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69202 conditions, 6847 events. 4359/6847 cut-off events. For 1035916/1035916 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42665 event pairs, 718 based on Foata normal form. 4/6849 useless extension candidates. Maximal degree in co-relation 69003. Up to 6377 conditions per place. [2024-06-28 04:01:43,219 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 723 selfloop transitions, 66 changer transitions 0/794 dead transitions. [2024-06-28 04:01:43,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 794 transitions, 13928 flow [2024-06-28 04:01:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:01:43,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46646341463414637 [2024-06-28 04:01:43,220 INFO L175 Difference]: Start difference. First operand has 439 places, 764 transitions, 12052 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:01:43,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 794 transitions, 13928 flow [2024-06-28 04:01:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 794 transitions, 13669 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:48,989 INFO L231 Difference]: Finished difference. Result has 441 places, 769 transitions, 12065 flow [2024-06-28 04:01:48,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11798, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12065, PETRI_PLACES=441, PETRI_TRANSITIONS=769} [2024-06-28 04:01:48,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 399 predicate places. [2024-06-28 04:01:48,989 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 769 transitions, 12065 flow [2024-06-28 04:01:48,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:48,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:48,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:01:48,990 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:48,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:48,990 INFO L85 PathProgramCache]: Analyzing trace with hash -693855724, now seen corresponding path program 14 times [2024-06-28 04:01:48,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:48,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979007532] [2024-06-28 04:01:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:48,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:49,706 INFO 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 04:01:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:49,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979007532] [2024-06-28 04:01:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979007532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:49,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:49,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905400611] [2024-06-28 04:01:49,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:49,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:49,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:49,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 769 transitions, 12065 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:49,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:49,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:49,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:51,642 INFO L124 PetriNetUnfolderBase]: 4347/6834 cut-off events. [2024-06-28 04:01:51,642 INFO L125 PetriNetUnfolderBase]: For 1027551/1027551 co-relation queries the response was YES. [2024-06-28 04:01:51,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68403 conditions, 6834 events. 4347/6834 cut-off events. For 1027551/1027551 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42642 event pairs, 752 based on Foata normal form. 4/6836 useless extension candidates. Maximal degree in co-relation 68203. Up to 6465 conditions per place. [2024-06-28 04:01:51,761 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 748 selfloop transitions, 31 changer transitions 0/784 dead transitions. [2024-06-28 04:01:51,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 784 transitions, 13717 flow [2024-06-28 04:01:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:01:51,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975609756097561 [2024-06-28 04:01:51,762 INFO L175 Difference]: Start difference. First operand has 441 places, 769 transitions, 12065 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:01:51,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 784 transitions, 13717 flow [2024-06-28 04:01:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 784 transitions, 13482 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:57,112 INFO L231 Difference]: Finished difference. Result has 445 places, 769 transitions, 11901 flow [2024-06-28 04:01:57,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11830, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11901, PETRI_PLACES=445, PETRI_TRANSITIONS=769} [2024-06-28 04:01:57,113 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 04:01:57,113 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 769 transitions, 11901 flow [2024-06-28 04:01:57,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:57,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:57,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:57,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:01:57,113 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:57,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -301265525, now seen corresponding path program 10 times [2024-06-28 04:01:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785577850] [2024-06-28 04:01:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:57,894 INFO 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 04:01:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785577850] [2024-06-28 04:01:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785577850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:57,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:57,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599080299] [2024-06-28 04:01:57,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:57,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:57,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:57,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:57,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:01:57,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 769 transitions, 11901 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:57,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:57,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:01:57,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:59,776 INFO L124 PetriNetUnfolderBase]: 4361/6856 cut-off events. [2024-06-28 04:01:59,776 INFO L125 PetriNetUnfolderBase]: For 1043135/1043135 co-relation queries the response was YES. [2024-06-28 04:01:59,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68368 conditions, 6856 events. 4361/6856 cut-off events. For 1043135/1043135 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42719 event pairs, 722 based on Foata normal form. 6/6860 useless extension candidates. Maximal degree in co-relation 68167. Up to 6191 conditions per place. [2024-06-28 04:01:59,895 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 699 selfloop transitions, 100 changer transitions 1/805 dead transitions. [2024-06-28 04:01:59,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 805 transitions, 13867 flow [2024-06-28 04:01:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:59,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:59,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 04:01:59,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5060975609756098 [2024-06-28 04:01:59,896 INFO L175 Difference]: Start difference. First operand has 445 places, 769 transitions, 11901 flow. Second operand 8 states and 166 transitions. [2024-06-28 04:01:59,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 805 transitions, 13867 flow [2024-06-28 04:02:05,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 805 transitions, 13720 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:05,102 INFO L231 Difference]: Finished difference. Result has 445 places, 775 transitions, 12198 flow [2024-06-28 04:02:05,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11754, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12198, PETRI_PLACES=445, PETRI_TRANSITIONS=775} [2024-06-28 04:02:05,103 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 04:02:05,103 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 775 transitions, 12198 flow [2024-06-28 04:02:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:05,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:05,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:05,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:02:05,103 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1418796070, now seen corresponding path program 15 times [2024-06-28 04:02:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417281945] [2024-06-28 04:02:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417281945] [2024-06-28 04:02:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417281945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:05,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:05,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941043880] [2024-06-28 04:02:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:05,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:05,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:05,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:05,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:05,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 775 transitions, 12198 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:07,792 INFO L124 PetriNetUnfolderBase]: 4349/6833 cut-off events. [2024-06-28 04:02:07,792 INFO L125 PetriNetUnfolderBase]: For 1029276/1029276 co-relation queries the response was YES. [2024-06-28 04:02:07,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68616 conditions, 6833 events. 4349/6833 cut-off events. For 1029276/1029276 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42632 event pairs, 704 based on Foata normal form. 4/6835 useless extension candidates. Maximal degree in co-relation 68414. Up to 6161 conditions per place. [2024-06-28 04:02:07,908 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 683 selfloop transitions, 108 changer transitions 1/797 dead transitions. [2024-06-28 04:02:07,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 797 transitions, 13986 flow [2024-06-28 04:02:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:02:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:02:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 04:02:07,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2024-06-28 04:02:07,909 INFO L175 Difference]: Start difference. First operand has 445 places, 775 transitions, 12198 flow. Second operand 11 states and 187 transitions. [2024-06-28 04:02:07,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 797 transitions, 13986 flow [2024-06-28 04:02:12,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 797 transitions, 13562 flow, removed 123 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:12,779 INFO L231 Difference]: Finished difference. Result has 450 places, 775 transitions, 11998 flow [2024-06-28 04:02:12,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11774, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11998, PETRI_PLACES=450, PETRI_TRANSITIONS=775} [2024-06-28 04:02:12,780 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-28 04:02:12,780 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 775 transitions, 11998 flow [2024-06-28 04:02:12,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:12,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:12,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:02:12,781 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1881762729, now seen corresponding path program 2 times [2024-06-28 04:02:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677846336] [2024-06-28 04:02:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:13,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677846336] [2024-06-28 04:02:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677846336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:13,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964164506] [2024-06-28 04:02:13,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:13,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:13,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:13,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 775 transitions, 11998 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:13,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:13,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:13,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:15,511 INFO L124 PetriNetUnfolderBase]: 4356/6848 cut-off events. [2024-06-28 04:02:15,511 INFO L125 PetriNetUnfolderBase]: For 1026718/1026718 co-relation queries the response was YES. [2024-06-28 04:02:15,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68406 conditions, 6848 events. 4356/6848 cut-off events. For 1026718/1026718 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42721 event pairs, 719 based on Foata normal form. 3/6849 useless extension candidates. Maximal degree in co-relation 68203. Up to 6403 conditions per place. [2024-06-28 04:02:15,630 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 741 selfloop transitions, 51 changer transitions 0/797 dead transitions. [2024-06-28 04:02:15,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 797 transitions, 13792 flow [2024-06-28 04:02:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:02:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:02:15,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 04:02:15,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47038327526132406 [2024-06-28 04:02:15,631 INFO L175 Difference]: Start difference. First operand has 450 places, 775 transitions, 11998 flow. Second operand 7 states and 135 transitions. [2024-06-28 04:02:15,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 797 transitions, 13792 flow [2024-06-28 04:02:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 797 transitions, 13463 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-28 04:02:21,335 INFO L231 Difference]: Finished difference. Result has 445 places, 778 transitions, 11908 flow [2024-06-28 04:02:21,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11669, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11908, PETRI_PLACES=445, PETRI_TRANSITIONS=778} [2024-06-28 04:02:21,335 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-28 04:02:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 778 transitions, 11908 flow [2024-06-28 04:02:21,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:21,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:21,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:02:21,336 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:21,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1418647115, now seen corresponding path program 11 times [2024-06-28 04:02:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:21,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693081460] [2024-06-28 04:02:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:22,048 INFO 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 04:02:22,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693081460] [2024-06-28 04:02:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693081460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:22,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:22,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:22,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978474304] [2024-06-28 04:02:22,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:22,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:22,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:22,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:22,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 778 transitions, 11908 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:22,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:22,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:22,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:23,949 INFO L124 PetriNetUnfolderBase]: 4371/6872 cut-off events. [2024-06-28 04:02:23,949 INFO L125 PetriNetUnfolderBase]: For 1032300/1032300 co-relation queries the response was YES. [2024-06-28 04:02:24,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68433 conditions, 6872 events. 4371/6872 cut-off events. For 1032300/1032300 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 42799 event pairs, 719 based on Foata normal form. 3/6873 useless extension candidates. Maximal degree in co-relation 68233. Up to 6244 conditions per place. [2024-06-28 04:02:24,073 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 711 selfloop transitions, 99 changer transitions 0/815 dead transitions. [2024-06-28 04:02:24,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 815 transitions, 14328 flow [2024-06-28 04:02:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:02:24,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:02:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 04:02:24,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091463414634146 [2024-06-28 04:02:24,075 INFO L175 Difference]: Start difference. First operand has 445 places, 778 transitions, 11908 flow. Second operand 8 states and 167 transitions. [2024-06-28 04:02:24,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 815 transitions, 14328 flow [2024-06-28 04:02:30,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 815 transitions, 14073 flow, removed 80 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:30,128 INFO L231 Difference]: Finished difference. Result has 448 places, 786 transitions, 12158 flow [2024-06-28 04:02:30,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11657, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12158, PETRI_PLACES=448, PETRI_TRANSITIONS=786} [2024-06-28 04:02:30,128 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 04:02:30,128 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 786 transitions, 12158 flow [2024-06-28 04:02:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:30,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:30,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:30,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:02:30,129 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:30,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 155868555, now seen corresponding path program 3 times [2024-06-28 04:02:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136663979] [2024-06-28 04:02:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:30,961 INFO 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 04:02:30,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:30,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136663979] [2024-06-28 04:02:30,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136663979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:30,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:30,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:30,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251863777] [2024-06-28 04:02:30,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:30,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:30,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:31,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:31,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 786 transitions, 12158 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:31,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:31,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:31,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:32,948 INFO L124 PetriNetUnfolderBase]: 4375/6891 cut-off events. [2024-06-28 04:02:32,948 INFO L125 PetriNetUnfolderBase]: For 1032630/1032630 co-relation queries the response was YES. [2024-06-28 04:02:33,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68810 conditions, 6891 events. 4375/6891 cut-off events. For 1032630/1032630 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 43105 event pairs, 743 based on Foata normal form. 4/6893 useless extension candidates. Maximal degree in co-relation 68609. Up to 6393 conditions per place. [2024-06-28 04:02:33,068 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 749 selfloop transitions, 55 changer transitions 0/809 dead transitions. [2024-06-28 04:02:33,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 809 transitions, 14255 flow [2024-06-28 04:02:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:02:33,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097560975609756 [2024-06-28 04:02:33,070 INFO L175 Difference]: Start difference. First operand has 448 places, 786 transitions, 12158 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:02:33,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 809 transitions, 14255 flow [2024-06-28 04:02:39,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 809 transitions, 14031 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:39,067 INFO L231 Difference]: Finished difference. Result has 454 places, 793 transitions, 12284 flow [2024-06-28 04:02:39,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11938, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12284, PETRI_PLACES=454, PETRI_TRANSITIONS=793} [2024-06-28 04:02:39,068 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 412 predicate places. [2024-06-28 04:02:39,068 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 793 transitions, 12284 flow [2024-06-28 04:02:39,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:39,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:39,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:39,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:02:39,069 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:39,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:39,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1570413655, now seen corresponding path program 4 times [2024-06-28 04:02:39,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:39,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044971742] [2024-06-28 04:02:39,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:39,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:39,787 INFO 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 04:02:39,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044971742] [2024-06-28 04:02:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044971742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:39,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:39,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:39,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752298820] [2024-06-28 04:02:39,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:39,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:39,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:39,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:39,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:39,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:39,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 793 transitions, 12284 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:39,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:39,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:39,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:41,768 INFO L124 PetriNetUnfolderBase]: 4363/6862 cut-off events. [2024-06-28 04:02:41,768 INFO L125 PetriNetUnfolderBase]: For 1002586/1002586 co-relation queries the response was YES. [2024-06-28 04:02:41,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68354 conditions, 6862 events. 4363/6862 cut-off events. For 1002586/1002586 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 42818 event pairs, 725 based on Foata normal form. 2/6862 useless extension candidates. Maximal degree in co-relation 68151. Up to 6355 conditions per place. [2024-06-28 04:02:41,886 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 731 selfloop transitions, 76 changer transitions 0/812 dead transitions. [2024-06-28 04:02:41,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 812 transitions, 13985 flow [2024-06-28 04:02:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:02:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:02:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 04:02:41,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-06-28 04:02:41,887 INFO L175 Difference]: Start difference. First operand has 454 places, 793 transitions, 12284 flow. Second operand 6 states and 124 transitions. [2024-06-28 04:02:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 812 transitions, 13985 flow [2024-06-28 04:02:47,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 812 transitions, 13571 flow, removed 133 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:47,826 INFO L231 Difference]: Finished difference. Result has 453 places, 793 transitions, 12083 flow [2024-06-28 04:02:47,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11878, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12083, PETRI_PLACES=453, PETRI_TRANSITIONS=793} [2024-06-28 04:02:47,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-28 04:02:47,826 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 793 transitions, 12083 flow [2024-06-28 04:02:47,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:47,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:47,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:47,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:02:47,827 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:47,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1921111880, now seen corresponding path program 1 times [2024-06-28 04:02:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203987881] [2024-06-28 04:02:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:48,744 INFO 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 04:02:48,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:48,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203987881] [2024-06-28 04:02:48,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203987881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:48,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:48,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:02:48,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832998840] [2024-06-28 04:02:48,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:48,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:02:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:48,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:02:48,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:02:48,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:48,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 793 transitions, 12083 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:48,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:48,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:48,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:51,398 INFO L124 PetriNetUnfolderBase]: 5090/7999 cut-off events. [2024-06-28 04:02:51,398 INFO L125 PetriNetUnfolderBase]: For 1994923/1994923 co-relation queries the response was YES. [2024-06-28 04:02:51,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89240 conditions, 7999 events. 5090/7999 cut-off events. For 1994923/1994923 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 50274 event pairs, 681 based on Foata normal form. 56/8049 useless extension candidates. Maximal degree in co-relation 89040. Up to 4002 conditions per place. [2024-06-28 04:02:51,532 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 432 selfloop transitions, 422 changer transitions 1/860 dead transitions. [2024-06-28 04:02:51,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 860 transitions, 15559 flow [2024-06-28 04:02:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215 transitions. [2024-06-28 04:02:51,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524390243902439 [2024-06-28 04:02:51,533 INFO L175 Difference]: Start difference. First operand has 453 places, 793 transitions, 12083 flow. Second operand 10 states and 215 transitions. [2024-06-28 04:02:51,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 860 transitions, 15559 flow [2024-06-28 04:02:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 860 transitions, 15259 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:57,780 INFO L231 Difference]: Finished difference. Result has 458 places, 804 transitions, 13226 flow [2024-06-28 04:02:57,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=11795, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13226, PETRI_PLACES=458, PETRI_TRANSITIONS=804} [2024-06-28 04:02:57,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 04:02:57,781 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 804 transitions, 13226 flow [2024-06-28 04:02:57,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:57,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:57,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:57,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:02:57,781 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:57,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1922989550, now seen corresponding path program 2 times [2024-06-28 04:02:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737144309] [2024-06-28 04:02:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:58,731 INFO 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 04:02:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:58,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737144309] [2024-06-28 04:02:58,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737144309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:58,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:58,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:02:58,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798576379] [2024-06-28 04:02:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:58,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:02:58,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:02:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:02:58,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:02:58,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 804 transitions, 13226 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:58,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:58,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:02:58,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:01,453 INFO L124 PetriNetUnfolderBase]: 5328/8370 cut-off events. [2024-06-28 04:03:01,454 INFO L125 PetriNetUnfolderBase]: For 2104884/2104884 co-relation queries the response was YES. [2024-06-28 04:03:01,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95706 conditions, 8370 events. 5328/8370 cut-off events. For 2104884/2104884 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 52883 event pairs, 1028 based on Foata normal form. 70/8434 useless extension candidates. Maximal degree in co-relation 95505. Up to 6162 conditions per place. [2024-06-28 04:03:01,614 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 431 selfloop transitions, 398 changer transitions 16/850 dead transitions. [2024-06-28 04:03:01,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 850 transitions, 15721 flow [2024-06-28 04:03:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:03:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:03:01,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-28 04:03:01,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47764227642276424 [2024-06-28 04:03:01,615 INFO L175 Difference]: Start difference. First operand has 458 places, 804 transitions, 13226 flow. Second operand 12 states and 235 transitions. [2024-06-28 04:03:01,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 850 transitions, 15721 flow [2024-06-28 04:03:08,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 850 transitions, 15236 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:08,356 INFO L231 Difference]: Finished difference. Result has 466 places, 796 transitions, 13574 flow [2024-06-28 04:03:08,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12763, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13574, PETRI_PLACES=466, PETRI_TRANSITIONS=796} [2024-06-28 04:03:08,357 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 424 predicate places. [2024-06-28 04:03:08,357 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 796 transitions, 13574 flow [2024-06-28 04:03:08,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:08,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:08,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:08,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:03:08,357 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:08,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:08,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1382150880, now seen corresponding path program 3 times [2024-06-28 04:03:08,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935537106] [2024-06-28 04:03:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:09,229 INFO 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 04:03:09,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:09,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935537106] [2024-06-28 04:03:09,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935537106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:09,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:09,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:09,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493662491] [2024-06-28 04:03:09,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:09,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:09,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:09,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:09,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:09,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:03:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 796 transitions, 13574 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:09,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:09,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:03:09,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:11,847 INFO L124 PetriNetUnfolderBase]: 5406/8526 cut-off events. [2024-06-28 04:03:11,847 INFO L125 PetriNetUnfolderBase]: For 2119939/2119939 co-relation queries the response was YES. [2024-06-28 04:03:11,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99556 conditions, 8526 events. 5406/8526 cut-off events. For 2119939/2119939 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 54205 event pairs, 993 based on Foata normal form. 56/8576 useless extension candidates. Maximal degree in co-relation 99352. Up to 6088 conditions per place. [2024-06-28 04:03:12,002 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 435 selfloop transitions, 398 changer transitions 10/848 dead transitions. [2024-06-28 04:03:12,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 848 transitions, 16366 flow [2024-06-28 04:03:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-06-28 04:03:12,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5033259423503326 [2024-06-28 04:03:12,003 INFO L175 Difference]: Start difference. First operand has 466 places, 796 transitions, 13574 flow. Second operand 11 states and 227 transitions. [2024-06-28 04:03:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 848 transitions, 16366 flow [2024-06-28 04:03:19,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 848 transitions, 15513 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 04:03:19,042 INFO L231 Difference]: Finished difference. Result has 467 places, 791 transitions, 13547 flow [2024-06-28 04:03:19,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12725, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13547, PETRI_PLACES=467, PETRI_TRANSITIONS=791} [2024-06-28 04:03:19,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-28 04:03:19,042 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 791 transitions, 13547 flow [2024-06-28 04:03:19,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:19,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:19,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:03:19,043 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:19,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash 753627116, now seen corresponding path program 1 times [2024-06-28 04:03:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:19,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645235525] [2024-06-28 04:03:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:19,979 INFO 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 04:03:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645235525] [2024-06-28 04:03:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645235525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:19,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479638738] [2024-06-28 04:03:19,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:19,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:19,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:19,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:19,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:20,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:03:20,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 791 transitions, 13547 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:20,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:20,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:03:20,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:23,195 INFO L124 PetriNetUnfolderBase]: 5542/8746 cut-off events. [2024-06-28 04:03:23,195 INFO L125 PetriNetUnfolderBase]: For 2014324/2014324 co-relation queries the response was YES. [2024-06-28 04:03:23,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104653 conditions, 8746 events. 5542/8746 cut-off events. For 2014324/2014324 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 56006 event pairs, 1231 based on Foata normal form. 14/8758 useless extension candidates. Maximal degree in co-relation 104448. Up to 8031 conditions per place. [2024-06-28 04:03:23,441 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 784 selfloop transitions, 39 changer transitions 0/828 dead transitions. [2024-06-28 04:03:23,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 828 transitions, 15935 flow [2024-06-28 04:03:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 04:03:23,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45121951219512196 [2024-06-28 04:03:23,443 INFO L175 Difference]: Start difference. First operand has 467 places, 791 transitions, 13547 flow. Second operand 10 states and 185 transitions. [2024-06-28 04:03:23,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 828 transitions, 15935 flow [2024-06-28 04:03:31,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 828 transitions, 15106 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 04:03:31,470 INFO L231 Difference]: Finished difference. Result has 468 places, 795 transitions, 12929 flow [2024-06-28 04:03:31,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12718, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12929, PETRI_PLACES=468, PETRI_TRANSITIONS=795} [2024-06-28 04:03:31,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 426 predicate places. [2024-06-28 04:03:31,470 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 795 transitions, 12929 flow [2024-06-28 04:03:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:31,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:31,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:31,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:03:31,470 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:31,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 747901664, now seen corresponding path program 4 times [2024-06-28 04:03:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:31,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111583598] [2024-06-28 04:03:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:31,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:32,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:32,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:32,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111583598] [2024-06-28 04:03:32,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111583598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:32,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:32,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:32,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494787904] [2024-06-28 04:03:32,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:32,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:32,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:32,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:03:32,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 795 transitions, 12929 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:32,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:32,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:03:32,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:35,679 INFO L124 PetriNetUnfolderBase]: 5756/9080 cut-off events. [2024-06-28 04:03:35,679 INFO L125 PetriNetUnfolderBase]: For 2205743/2205743 co-relation queries the response was YES. [2024-06-28 04:03:35,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109697 conditions, 9080 events. 5756/9080 cut-off events. For 2205743/2205743 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 58340 event pairs, 1278 based on Foata normal form. 16/9094 useless extension candidates. Maximal degree in co-relation 109490. Up to 8245 conditions per place. [2024-06-28 04:03:35,833 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 744 selfloop transitions, 84 changer transitions 0/833 dead transitions. [2024-06-28 04:03:35,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 833 transitions, 15495 flow [2024-06-28 04:03:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:35,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:35,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 04:03:35,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523281596452328 [2024-06-28 04:03:35,835 INFO L175 Difference]: Start difference. First operand has 468 places, 795 transitions, 12929 flow. Second operand 11 states and 204 transitions. [2024-06-28 04:03:35,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 833 transitions, 15495 flow [2024-06-28 04:03:46,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 833 transitions, 15432 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:46,034 INFO L231 Difference]: Finished difference. Result has 475 places, 801 transitions, 13273 flow [2024-06-28 04:03:46,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=12866, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13273, PETRI_PLACES=475, PETRI_TRANSITIONS=801} [2024-06-28 04:03:46,034 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 04:03:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 801 transitions, 13273 flow [2024-06-28 04:03:46,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:46,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:46,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:46,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:03:46,034 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:46,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash 747905384, now seen corresponding path program 5 times [2024-06-28 04:03:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685600244] [2024-06-28 04:03:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685600244] [2024-06-28 04:03:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685600244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837058932] [2024-06-28 04:03:47,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:47,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:47,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:47,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:03:47,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 801 transitions, 13273 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:47,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:47,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:03:47,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:50,505 INFO L124 PetriNetUnfolderBase]: 5828/9192 cut-off events. [2024-06-28 04:03:50,506 INFO L125 PetriNetUnfolderBase]: For 2277436/2277436 co-relation queries the response was YES. [2024-06-28 04:03:50,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111701 conditions, 9192 events. 5828/9192 cut-off events. For 2277436/2277436 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 59134 event pairs, 1319 based on Foata normal form. 20/9210 useless extension candidates. Maximal degree in co-relation 111491. Up to 8584 conditions per place. [2024-06-28 04:03:50,659 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 748 selfloop transitions, 79 changer transitions 0/832 dead transitions. [2024-06-28 04:03:50,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 832 transitions, 15435 flow [2024-06-28 04:03:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:03:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:03:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-28 04:03:50,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349593495934959 [2024-06-28 04:03:50,661 INFO L175 Difference]: Start difference. First operand has 475 places, 801 transitions, 13273 flow. Second operand 12 states and 214 transitions. [2024-06-28 04:03:50,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 832 transitions, 15435 flow [2024-06-28 04:04:01,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 832 transitions, 15306 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:01,313 INFO L231 Difference]: Finished difference. Result has 481 places, 803 transitions, 13402 flow [2024-06-28 04:04:01,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13146, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13402, PETRI_PLACES=481, PETRI_TRANSITIONS=803} [2024-06-28 04:04:01,313 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 439 predicate places. [2024-06-28 04:04:01,314 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 803 transitions, 13402 flow [2024-06-28 04:04:01,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:01,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:01,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:01,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:04:01,314 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:01,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:01,315 INFO L85 PathProgramCache]: Analyzing trace with hash 748049534, now seen corresponding path program 6 times [2024-06-28 04:04:01,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:01,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819808271] [2024-06-28 04:04:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:01,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:02,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:02,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819808271] [2024-06-28 04:04:02,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819808271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:02,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:02,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:04:02,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669667222] [2024-06-28 04:04:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:02,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:04:02,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:04:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:04:02,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:04:02,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 803 transitions, 13402 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:02,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:02,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:04:02,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:05,970 INFO L124 PetriNetUnfolderBase]: 6047/9545 cut-off events. [2024-06-28 04:04:05,970 INFO L125 PetriNetUnfolderBase]: For 2685363/2685363 co-relation queries the response was YES. [2024-06-28 04:04:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114384 conditions, 9545 events. 6047/9545 cut-off events. For 2685363/2685363 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 61942 event pairs, 1394 based on Foata normal form. 80/9623 useless extension candidates. Maximal degree in co-relation 114172. Up to 8599 conditions per place. [2024-06-28 04:04:06,140 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 751 selfloop transitions, 73 changer transitions 10/839 dead transitions. [2024-06-28 04:04:06,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 839 transitions, 15487 flow [2024-06-28 04:04:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:04:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:04:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 04:04:06,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 04:04:06,141 INFO L175 Difference]: Start difference. First operand has 481 places, 803 transitions, 13402 flow. Second operand 11 states and 205 transitions. [2024-06-28 04:04:06,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 839 transitions, 15487 flow [2024-06-28 04:04:18,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 839 transitions, 15287 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:18,515 INFO L231 Difference]: Finished difference. Result has 484 places, 801 transitions, 13457 flow [2024-06-28 04:04:18,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13202, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13457, PETRI_PLACES=484, PETRI_TRANSITIONS=801} [2024-06-28 04:04:18,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-28 04:04:18,516 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 801 transitions, 13457 flow [2024-06-28 04:04:18,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:18,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:18,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:18,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:04:18,516 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:18,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:18,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1424376132, now seen corresponding path program 2 times [2024-06-28 04:04:18,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:18,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917134674] [2024-06-28 04:04:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:18,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:19,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917134674] [2024-06-28 04:04:19,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917134674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:19,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:19,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:19,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815429257] [2024-06-28 04:04:19,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:19,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:19,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:04:19,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 801 transitions, 13457 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:19,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:19,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:04:19,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:22,857 INFO L124 PetriNetUnfolderBase]: 5973/9435 cut-off events. [2024-06-28 04:04:22,857 INFO L125 PetriNetUnfolderBase]: For 2323708/2323708 co-relation queries the response was YES. [2024-06-28 04:04:22,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113503 conditions, 9435 events. 5973/9435 cut-off events. For 2323708/2323708 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 61156 event pairs, 1358 based on Foata normal form. 26/9459 useless extension candidates. Maximal degree in co-relation 113289. Up to 8832 conditions per place. [2024-06-28 04:04:23,030 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 774 selfloop transitions, 53 changer transitions 0/832 dead transitions. [2024-06-28 04:04:23,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 832 transitions, 15508 flow [2024-06-28 04:04:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 04:04:23,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44986449864498645 [2024-06-28 04:04:23,031 INFO L175 Difference]: Start difference. First operand has 484 places, 801 transitions, 13457 flow. Second operand 9 states and 166 transitions. [2024-06-28 04:04:23,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 832 transitions, 15508 flow [2024-06-28 04:04:33,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 832 transitions, 15295 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:33,929 INFO L231 Difference]: Finished difference. Result has 484 places, 805 transitions, 13485 flow [2024-06-28 04:04:33,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13244, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13485, PETRI_PLACES=484, PETRI_TRANSITIONS=805} [2024-06-28 04:04:33,930 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 442 predicate places. [2024-06-28 04:04:33,930 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 805 transitions, 13485 flow [2024-06-28 04:04:33,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:33,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:33,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:04:33,931 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:33,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:33,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1424383572, now seen corresponding path program 3 times [2024-06-28 04:04:33,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:33,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409266715] [2024-06-28 04:04:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:34,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409266715] [2024-06-28 04:04:34,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409266715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:34,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:34,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:04:34,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789187557] [2024-06-28 04:04:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:34,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:04:34,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:04:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:04:34,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:04:34,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 805 transitions, 13485 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:34,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:34,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:04:34,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:38,463 INFO L124 PetriNetUnfolderBase]: 6185/9755 cut-off events. [2024-06-28 04:04:38,463 INFO L125 PetriNetUnfolderBase]: For 2456356/2456356 co-relation queries the response was YES. [2024-06-28 04:04:38,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119602 conditions, 9755 events. 6185/9755 cut-off events. For 2456356/2456356 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 63654 event pairs, 1354 based on Foata normal form. 14/9767 useless extension candidates. Maximal degree in co-relation 119387. Up to 8592 conditions per place. [2024-06-28 04:04:38,642 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 782 selfloop transitions, 56 changer transitions 0/843 dead transitions. [2024-06-28 04:04:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 843 transitions, 15993 flow [2024-06-28 04:04:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 04:04:38,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634146341463415 [2024-06-28 04:04:38,643 INFO L175 Difference]: Start difference. First operand has 484 places, 805 transitions, 13485 flow. Second operand 9 states and 171 transitions. [2024-06-28 04:04:38,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 843 transitions, 15993 flow [2024-06-28 04:04:51,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 843 transitions, 15869 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:51,429 INFO L231 Difference]: Finished difference. Result has 487 places, 809 transitions, 13635 flow [2024-06-28 04:04:51,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13361, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=750, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13635, PETRI_PLACES=487, PETRI_TRANSITIONS=809} [2024-06-28 04:04:51,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-28 04:04:51,430 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 809 transitions, 13635 flow [2024-06-28 04:04:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:51,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:51,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:51,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:04:51,430 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:51,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash 526637236, now seen corresponding path program 4 times [2024-06-28 04:04:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778918530] [2024-06-28 04:04:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778918530] [2024-06-28 04:04:52,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778918530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:52,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:52,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:04:52,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172656709] [2024-06-28 04:04:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:52,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:04:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:04:52,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:04:52,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:04:52,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 809 transitions, 13635 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:52,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:52,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:04:52,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:56,143 INFO L124 PetriNetUnfolderBase]: 6317/9955 cut-off events. [2024-06-28 04:04:56,144 INFO L125 PetriNetUnfolderBase]: For 2608717/2608717 co-relation queries the response was YES. [2024-06-28 04:04:56,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122953 conditions, 9955 events. 6317/9955 cut-off events. For 2608717/2608717 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 64935 event pairs, 1482 based on Foata normal form. 26/9979 useless extension candidates. Maximal degree in co-relation 122736. Up to 8847 conditions per place. [2024-06-28 04:04:56,314 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 676 selfloop transitions, 190 changer transitions 1/872 dead transitions. [2024-06-28 04:04:56,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 872 transitions, 16814 flow [2024-06-28 04:04:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:04:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:04:56,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 04:04:56,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013550135501355 [2024-06-28 04:04:56,315 INFO L175 Difference]: Start difference. First operand has 487 places, 809 transitions, 13635 flow. Second operand 9 states and 185 transitions. [2024-06-28 04:04:56,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 872 transitions, 16814 flow [2024-06-28 04:05:09,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 872 transitions, 16708 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:09,029 INFO L231 Difference]: Finished difference. Result has 495 places, 836 transitions, 14900 flow [2024-06-28 04:05:09,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=13541, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14900, PETRI_PLACES=495, PETRI_TRANSITIONS=836} [2024-06-28 04:05:09,030 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-28 04:05:09,030 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 836 transitions, 14900 flow [2024-06-28 04:05:09,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:09,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:09,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:09,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 04:05:09,030 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:09,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:09,030 INFO L85 PathProgramCache]: Analyzing trace with hash 673535550, now seen corresponding path program 7 times [2024-06-28 04:05:09,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:09,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113197434] [2024-06-28 04:05:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:09,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:10,020 INFO 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 04:05:10,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:10,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113197434] [2024-06-28 04:05:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113197434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:10,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:10,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:05:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116615413] [2024-06-28 04:05:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:10,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:05:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:05:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:05:10,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:05:10,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 836 transitions, 14900 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:10,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:10,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:05:10,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:14,103 INFO L124 PetriNetUnfolderBase]: 6523/10288 cut-off events. [2024-06-28 04:05:14,104 INFO L125 PetriNetUnfolderBase]: For 2900080/2900080 co-relation queries the response was YES. [2024-06-28 04:05:14,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128828 conditions, 10288 events. 6523/10288 cut-off events. For 2900080/2900080 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 67452 event pairs, 1553 based on Foata normal form. 54/10340 useless extension candidates. Maximal degree in co-relation 128605. Up to 9035 conditions per place. [2024-06-28 04:05:14,282 INFO L140 encePairwiseOnDemand]: 27/41 looper letters, 720 selfloop transitions, 149 changer transitions 13/887 dead transitions. [2024-06-28 04:05:14,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 887 transitions, 17326 flow [2024-06-28 04:05:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 04:05:14,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2024-06-28 04:05:14,283 INFO L175 Difference]: Start difference. First operand has 495 places, 836 transitions, 14900 flow. Second operand 10 states and 200 transitions. [2024-06-28 04:05:14,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 887 transitions, 17326 flow [2024-06-28 04:05:29,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 887 transitions, 16963 flow, removed 172 selfloop flow, removed 3 redundant places. [2024-06-28 04:05:29,088 INFO L231 Difference]: Finished difference. Result has 503 places, 838 transitions, 15043 flow [2024-06-28 04:05:29,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14633, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15043, PETRI_PLACES=503, PETRI_TRANSITIONS=838} [2024-06-28 04:05:29,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 461 predicate places. [2024-06-28 04:05:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 838 transitions, 15043 flow [2024-06-28 04:05:29,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:29,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:29,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 04:05:29,089 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash 531993664, now seen corresponding path program 8 times [2024-06-28 04:05:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747452056] [2024-06-28 04:05:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:29,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:30,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747452056] [2024-06-28 04:05:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747452056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:30,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415826584] [2024-06-28 04:05:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:30,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:30,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:30,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:05:30,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 838 transitions, 15043 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:30,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:30,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:05:30,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:33,967 INFO L124 PetriNetUnfolderBase]: 6433/10163 cut-off events. [2024-06-28 04:05:33,967 INFO L125 PetriNetUnfolderBase]: For 2636341/2636341 co-relation queries the response was YES. [2024-06-28 04:05:34,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127914 conditions, 10163 events. 6433/10163 cut-off events. For 2636341/2636341 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 66740 event pairs, 1477 based on Foata normal form. 20/10181 useless extension candidates. Maximal degree in co-relation 127689. Up to 9488 conditions per place. [2024-06-28 04:05:34,148 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 803 selfloop transitions, 60 changer transitions 0/868 dead transitions. [2024-06-28 04:05:34,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 868 transitions, 17097 flow [2024-06-28 04:05:34,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:34,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 04:05:34,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279379157427938 [2024-06-28 04:05:34,149 INFO L175 Difference]: Start difference. First operand has 503 places, 838 transitions, 15043 flow. Second operand 11 states and 193 transitions. [2024-06-28 04:05:34,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 868 transitions, 17097 flow [2024-06-28 04:05:46,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 868 transitions, 16742 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:46,189 INFO L231 Difference]: Finished difference. Result has 509 places, 842 transitions, 14995 flow [2024-06-28 04:05:46,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14688, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14995, PETRI_PLACES=509, PETRI_TRANSITIONS=842} [2024-06-28 04:05:46,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-28 04:05:46,189 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 842 transitions, 14995 flow [2024-06-28 04:05:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:46,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:46,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 04:05:46,190 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:46,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1418658120, now seen corresponding path program 9 times [2024-06-28 04:05:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015542858] [2024-06-28 04:05:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:46,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:47,013 INFO 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 04:05:47,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015542858] [2024-06-28 04:05:47,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015542858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:47,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:47,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:47,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709345832] [2024-06-28 04:05:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:47,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:47,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:47,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:47,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:05:47,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 842 transitions, 14995 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:47,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:47,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:05:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:51,138 INFO L124 PetriNetUnfolderBase]: 6756/10622 cut-off events. [2024-06-28 04:05:51,138 INFO L125 PetriNetUnfolderBase]: For 2917246/2917246 co-relation queries the response was YES. [2024-06-28 04:05:51,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137492 conditions, 10622 events. 6756/10622 cut-off events. For 2917246/2917246 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 69725 event pairs, 1454 based on Foata normal form. 16/10636 useless extension candidates. Maximal degree in co-relation 137264. Up to 9243 conditions per place. [2024-06-28 04:05:51,333 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 733 selfloop transitions, 166 changer transitions 0/904 dead transitions. [2024-06-28 04:05:51,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 904 transitions, 18404 flow [2024-06-28 04:05:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 04:05:51,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5097560975609756 [2024-06-28 04:05:51,334 INFO L175 Difference]: Start difference. First operand has 509 places, 842 transitions, 14995 flow. Second operand 10 states and 209 transitions. [2024-06-28 04:05:51,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 904 transitions, 18404 flow [2024-06-28 04:06:05,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 904 transitions, 18265 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:05,801 INFO L231 Difference]: Finished difference. Result has 519 places, 860 transitions, 16029 flow [2024-06-28 04:06:05,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=14856, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16029, PETRI_PLACES=519, PETRI_TRANSITIONS=860} [2024-06-28 04:06:05,801 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 477 predicate places. [2024-06-28 04:06:05,801 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 860 transitions, 16029 flow [2024-06-28 04:06:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:05,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:05,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 04:06:05,802 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:05,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1418661840, now seen corresponding path program 10 times [2024-06-28 04:06:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365583046] [2024-06-28 04:06:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:06,724 INFO 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 04:06:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:06,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365583046] [2024-06-28 04:06:06,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365583046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:06,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:06,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:06,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433346481] [2024-06-28 04:06:06,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:06,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:06,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:06,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:06,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:06,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:06:06,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 860 transitions, 16029 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:06,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:06,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:06:06,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:11,061 INFO L124 PetriNetUnfolderBase]: 6769/10640 cut-off events. [2024-06-28 04:06:11,062 INFO L125 PetriNetUnfolderBase]: For 2916326/2916326 co-relation queries the response was YES. [2024-06-28 04:06:11,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138208 conditions, 10640 events. 6769/10640 cut-off events. For 2916326/2916326 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 69882 event pairs, 1584 based on Foata normal form. 20/10658 useless extension candidates. Maximal degree in co-relation 137974. Up to 9791 conditions per place. [2024-06-28 04:06:11,259 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 742 selfloop transitions, 152 changer transitions 0/899 dead transitions. [2024-06-28 04:06:11,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 899 transitions, 18592 flow [2024-06-28 04:06:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 04:06:11,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47671840354767187 [2024-06-28 04:06:11,260 INFO L175 Difference]: Start difference. First operand has 519 places, 860 transitions, 16029 flow. Second operand 11 states and 215 transitions. [2024-06-28 04:06:11,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 899 transitions, 18592 flow [2024-06-28 04:06:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 899 transitions, 18465 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-06-28 04:06:24,014 INFO L231 Difference]: Finished difference. Result has 528 places, 861 transitions, 16267 flow [2024-06-28 04:06:24,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15904, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16267, PETRI_PLACES=528, PETRI_TRANSITIONS=861} [2024-06-28 04:06:24,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-28 04:06:24,015 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 861 transitions, 16267 flow [2024-06-28 04:06:24,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:24,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:24,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 04:06:24,016 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:24,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash 155885140, now seen corresponding path program 5 times [2024-06-28 04:06:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:24,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783278668] [2024-06-28 04:06:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:24,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:24,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783278668] [2024-06-28 04:06:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783278668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:06:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912751424] [2024-06-28 04:06:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:24,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:06:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:06:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:06:25,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:06:25,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 861 transitions, 16267 flow. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:25,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:25,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:06:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:29,394 INFO L124 PetriNetUnfolderBase]: 7031/11073 cut-off events. [2024-06-28 04:06:29,394 INFO L125 PetriNetUnfolderBase]: For 3166686/3166686 co-relation queries the response was YES. [2024-06-28 04:06:29,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146668 conditions, 11073 events. 7031/11073 cut-off events. For 3166686/3166686 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 73722 event pairs, 1652 based on Foata normal form. 16/11087 useless extension candidates. Maximal degree in co-relation 146432. Up to 9665 conditions per place. [2024-06-28 04:06:29,605 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 762 selfloop transitions, 143 changer transitions 0/910 dead transitions. [2024-06-28 04:06:29,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 910 transitions, 19030 flow [2024-06-28 04:06:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 04:06:29,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2024-06-28 04:06:29,606 INFO L175 Difference]: Start difference. First operand has 528 places, 861 transitions, 16267 flow. Second operand 8 states and 176 transitions. [2024-06-28 04:06:29,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 910 transitions, 19030 flow [2024-06-28 04:06:43,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 910 transitions, 18718 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:43,086 INFO L231 Difference]: Finished difference. Result has 530 places, 868 transitions, 16529 flow [2024-06-28 04:06:43,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=15955, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16529, PETRI_PLACES=530, PETRI_TRANSITIONS=868} [2024-06-28 04:06:43,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-28 04:06:43,087 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 868 transitions, 16529 flow [2024-06-28 04:06:43,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 12 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:43,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:43,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 04:06:43,087 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:43,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash 165081910, now seen corresponding path program 6 times [2024-06-28 04:06:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451839679] [2024-06-28 04:06:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:43,921 INFO 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 04:06:43,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451839679] [2024-06-28 04:06:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451839679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66083841] [2024-06-28 04:06:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:43,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:43,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:06:43,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 868 transitions, 16529 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:43,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:43,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:06:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:48,359 INFO L124 PetriNetUnfolderBase]: 7256/11458 cut-off events. [2024-06-28 04:06:48,359 INFO L125 PetriNetUnfolderBase]: For 3380896/3380896 co-relation queries the response was YES. [2024-06-28 04:06:48,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153658 conditions, 11458 events. 7256/11458 cut-off events. For 3380896/3380896 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 76900 event pairs, 1718 based on Foata normal form. 16/11472 useless extension candidates. Maximal degree in co-relation 153420. Up to 10548 conditions per place. [2024-06-28 04:06:48,708 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 858 selfloop transitions, 57 changer transitions 0/920 dead transitions. [2024-06-28 04:06:48,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 920 transitions, 19390 flow [2024-06-28 04:06:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 04:06:48,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396341463414634 [2024-06-28 04:06:48,709 INFO L175 Difference]: Start difference. First operand has 530 places, 868 transitions, 16529 flow. Second operand 8 states and 177 transitions. [2024-06-28 04:06:48,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 920 transitions, 19390 flow [2024-06-28 04:07:02,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 920 transitions, 19186 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:07:02,289 INFO L231 Difference]: Finished difference. Result has 535 places, 878 transitions, 16775 flow [2024-06-28 04:07:02,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=16327, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16775, PETRI_PLACES=535, PETRI_TRANSITIONS=878} [2024-06-28 04:07:02,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-28 04:07:02,290 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 878 transitions, 16775 flow [2024-06-28 04:07:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:02,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:02,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 04:07:02,290 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:02,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:02,291 INFO L85 PathProgramCache]: Analyzing trace with hash -93472970, now seen corresponding path program 7 times [2024-06-28 04:07:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:02,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591960990] [2024-06-28 04:07:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:03,171 INFO 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 04:07:03,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:03,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591960990] [2024-06-28 04:07:03,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591960990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:03,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:03,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:07:03,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785289277] [2024-06-28 04:07:03,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:03,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:07:03,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:07:03,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:07:03,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2024-06-28 04:07:03,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 878 transitions, 16775 flow. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:03,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:03,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2024-06-28 04:07:03,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand