./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/mix012_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix012_pso.opt_tso.opt.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/mix012_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 14:36:45,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:36:45,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:36:45,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:36:45,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:36:45,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:36:45,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:36:45,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:36:45,514 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:36:45,515 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:36:45,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:36:45,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:36:45,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:36:45,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:36:45,516 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:36:45,516 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:36:45,516 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:36:45,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:36:45,517 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:36:45,517 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:36:45,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:36:45,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:36:45,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:36:45,518 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:36:45,518 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:36:45,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:36:45,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:36:45,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:36:45,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:36:45,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:36:45,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:36:45,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:36:45,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:36:45,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:36:45,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:36:45,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:36:45,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:36:45,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:36:45,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:36:45,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:36:45,523 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:36:45,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:36:45,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:36:45,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:36:45,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:36:45,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:36:45,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:36:45,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:36:45,718 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:36:45,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-14 14:36:46,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:36:46,903 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:36:46,904 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-14 14:36:46,917 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8255e6579/38ac8be68f844ad5bdb2967ef5dd2836/FLAG309ca173e [2024-06-14 14:36:46,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8255e6579/38ac8be68f844ad5bdb2967ef5dd2836 [2024-06-14 14:36:46,939 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:36:46,939 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:36:46,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-14 14:36:47,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:36:47,083 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:36:47,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:36:47,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:36:47,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:36:47,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:36:46" (1/2) ... [2024-06-14 14:36:47,091 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47195d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:36:47, skipping insertion in model container [2024-06-14 14:36:47,091 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:36:46" (1/2) ... [2024-06-14 14:36:47,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f225ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:36:47, skipping insertion in model container [2024-06-14 14:36:47,094 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:36:47" (2/2) ... [2024-06-14 14:36:47,094 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47195d6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47, skipping insertion in model container [2024-06-14 14:36:47,094 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:36:47" (2/2) ... [2024-06-14 14:36:47,095 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:36:47,147 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:36:47,149 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )x$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )x$flush_delayed >= 0LL) && (long long )x + (long long )x$mem_tmp >= 0LL) && (long long )x + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x + (long long )x$read_delayed >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff1 >= 0LL) && (long long )x$flush_delayed + (long long )x$mem_tmp >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )x) - (long long )y >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )y >= 0LL) && (1LL + (long long )x$mem_tmp) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (1LL + (long long )x$read_delayed) - (long long )y >= 0LL) && (1LL + (long long )x$w_buff0) - (long long )y >= 0LL) && (1LL + (long long )x$w_buff1) - (long long )y >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (1LL - (long long )x$read_delayed) - (long long )y >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$read_delayed >= 0LL) && (long long )x - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x - (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$read_delayed >= 0LL))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= x$mem_tmp) && 0 <= x$w_buff0) && 0 <= x$w_buff1) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && x$mem_tmp <= 1) && x$w_buff0 <= 1) && x$w_buff1 <= 1) && y <= 1) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 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)) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1))) [2024-06-14 14:36:47,149 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ((((((((((((((((! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff0_thd1 >= 0LL && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd1) + (long long )x$w_buff1 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$read_delayed) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )weak$$choice0) + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )x$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )x$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )x$flush_delayed >= 0LL) && (long long )x + (long long )x$mem_tmp >= 0LL) && (long long )x + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x + (long long )x$read_delayed >= 0LL) && (long long )x + (long long )x$w_buff0 >= 0LL) && (long long )x + (long long )x$w_buff1 >= 0LL) && (long long )x$flush_delayed + (long long )x$mem_tmp >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed + (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$flush_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp + (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff0 >= 0LL) && (long long )x$mem_tmp + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd0 + (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff1_thd1 + (long long )x$w_buff1 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff0 >= 0LL) && (long long )x$read_delayed + (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )x$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )x$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )weak$$choice0 >= 0LL) && (1LL + (long long )x) - (long long )y >= 0LL) && (1LL + (long long )x$flush_delayed) - (long long )y >= 0LL) && (1LL + (long long )x$mem_tmp) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (1LL + (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (1LL + (long long )x$read_delayed) - (long long )y >= 0LL) && (1LL + (long long )x$w_buff0) - (long long )y >= 0LL) && (1LL + (long long )x$w_buff1) - (long long )y >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff0_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd0 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff0_thd1) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$r_buff1_thd1 >= 0LL) && (0LL - (long long )x$r_buff1_thd0) - (long long )x$read_delayed >= 0LL) && (0LL - (long long )x$r_buff1_thd1) - (long long )x$read_delayed >= 0LL) && (1LL - (long long )x$r_buff0_thd0) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff0_thd1) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff1_thd0) - (long long )y >= 0LL) && (1LL - (long long )x$r_buff1_thd1) - (long long )y >= 0LL) && (1LL - (long long )x$read_delayed) - (long long )y >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )weak$$choice0) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )weak$$choice0) - (long long )y >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )x$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )x$read_delayed >= 0LL) && (long long )x - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x - (long long )x$read_delayed >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$flush_delayed - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$flush_delayed - (long long )x$read_delayed >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$mem_tmp - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$mem_tmp - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff0_thd1 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )x$r_buff1_thd0 - (long long )x$read_delayed >= 0LL) && (long long )x$r_buff1_thd1 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )x$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )x$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )x$read_delayed >= 0LL))) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= x$mem_tmp) && 0 <= x$w_buff0) && 0 <= x$w_buff1) && 0 <= y) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && x$mem_tmp <= 1) && x$w_buff0 <= 1) && x$w_buff1 <= 1) && y <= 1) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 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)) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1))) [2024-06-14 14:36:47,150 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:36:47,150 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-14 14:36:47,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:36:47,489 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:36:47,500 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:36:47,741 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:36:47,768 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:36:47,768 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47 WrapperNode [2024-06-14 14:36:47,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:36:47,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:36:47,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:36:47,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:36:47,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,912 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-14 14:36:47,913 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:36:47,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:36:47,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:36:47,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:36:47,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,944 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,976 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]. [2024-06-14 14:36:47,976 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:47,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:48,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:48,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:48,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:48,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:36:48,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:36:48,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:36:48,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:36:48,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (1/1) ... [2024-06-14 14:36:48,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:36:48,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:36:48,049 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) [2024-06-14 14:36:48,068 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 [2024-06-14 14:36:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:36:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:36:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 14:36:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 14:36:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 14:36:48,087 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 14:36:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:36:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:36:48,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:36:48,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:36:48,089 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:36:48,204 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:36:48,206 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:36:48,737 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:36:48,737 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:36:48,885 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:36:48,885 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 14:36:48,887 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:36:48 BoogieIcfgContainer [2024-06-14 14:36:48,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:36:48,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:36:48,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:36:48,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:36:48,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:36:46" (1/4) ... [2024-06-14 14:36:48,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159db144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:36:48, skipping insertion in model container [2024-06-14 14:36:48,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:36:47" (2/4) ... [2024-06-14 14:36:48,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159db144 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:36:48, skipping insertion in model container [2024-06-14 14:36:48,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:36:47" (3/4) ... [2024-06-14 14:36:48,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159db144 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:36:48, skipping insertion in model container [2024-06-14 14:36:48,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:36:48" (4/4) ... [2024-06-14 14:36:48,899 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-14 14:36:48,913 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:36:48,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 14:36:48,914 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:36:48,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 14:36:49,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 14:36:49,061 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 14:36:49,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:36:49,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 14:36:49,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 14:36:49,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 14:36:49,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:36:49,081 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;@5ce847e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:36:49,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 14:36:49,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:36:49,109 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 14:36:49,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:36:49,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:36:49,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 14:36:49,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:36:49,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:36:49,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1928007687, now seen corresponding path program 1 times [2024-06-14 14:36:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:36:49,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964065308] [2024-06-14 14:36:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:36:49,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:36:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:36:52,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:36:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:36:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964065308] [2024-06-14 14:36:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964065308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:36:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:36:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:36:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452413856] [2024-06-14 14:36:52,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:36:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:36:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:36:52,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:36:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:36:52,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-14 14:36:52,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:52,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:36:52,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-14 14:36:52,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:36:52,287 INFO L124 PetriNetUnfolderBase]: 131/259 cut-off events. [2024-06-14 14:36:52,287 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 14:36:52,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 259 events. 131/259 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 969 event pairs, 75 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 503. Up to 235 conditions per place. [2024-06-14 14:36:52,291 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 14:36:52,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 117 flow [2024-06-14 14:36:52,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:36:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:36:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-14 14:36:52,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-14 14:36:52,301 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 54 transitions. [2024-06-14 14:36:52,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 117 flow [2024-06-14 14:36:52,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:36:52,304 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 14:36:52,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 14:36:52,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 14:36:52,308 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 14:36:52,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:52,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:36:52,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:36:52,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:36:52,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:36:52,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:36:52,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1684465704, now seen corresponding path program 1 times [2024-06-14 14:36:52,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:36:52,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398238383] [2024-06-14 14:36:52,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:36:52,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:36:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:36:54,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:36:54,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:36:54,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398238383] [2024-06-14 14:36:54,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398238383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:36:54,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:36:54,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 14:36:54,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919140872] [2024-06-14 14:36:54,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:36:54,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 14:36:54,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:36:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 14:36:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 14:36:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:36:54,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:54,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:36:54,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:36:54,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:36:54,242 INFO L124 PetriNetUnfolderBase]: 150/281 cut-off events. [2024-06-14 14:36:54,243 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 14:36:54,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 281 events. 150/281 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1001 event pairs, 68 based on Foata normal form. 2/283 useless extension candidates. Maximal degree in co-relation 636. Up to 258 conditions per place. [2024-06-14 14:36:54,248 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 14:36:54,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-14 14:36:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:36:54,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:36:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-14 14:36:54,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-14 14:36:54,251 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 66 transitions. [2024-06-14 14:36:54,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-14 14:36:54,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:36:54,255 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 14:36:54,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 14:36:54,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 14:36:54,256 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 14:36:54,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:54,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:36:54,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:36:54,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:36:54,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:36:54,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:36:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -678828682, now seen corresponding path program 1 times [2024-06-14 14:36:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:36:54,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338789804] [2024-06-14 14:36:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:36:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:36:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:36:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:36:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:36:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338789804] [2024-06-14 14:36:56,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338789804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:36:56,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:36:56,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:36:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695685130] [2024-06-14 14:36:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:36:56,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:36:56,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:36:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:36:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:36:56,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:36:56,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:56,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:36:56,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:36:56,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:36:57,137 INFO L124 PetriNetUnfolderBase]: 147/276 cut-off events. [2024-06-14 14:36:57,137 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-14 14:36:57,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 276 events. 147/276 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 978 event pairs, 47 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 697. Up to 244 conditions per place. [2024-06-14 14:36:57,139 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-14 14:36:57,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 209 flow [2024-06-14 14:36:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:36:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:36:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-14 14:36:57,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-14 14:36:57,143 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-14 14:36:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 209 flow [2024-06-14 14:36:57,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 14:36:57,146 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-14 14:36:57,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-14 14:36:57,147 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-14 14:36:57,148 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-14 14:36:57,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:57,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:36:57,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:36:57,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:36:57,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:36:57,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:36:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 480685493, now seen corresponding path program 1 times [2024-06-14 14:36:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:36:57,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422049019] [2024-06-14 14:36:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:36:57,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:36:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:36:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:36:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:36:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422049019] [2024-06-14 14:36:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422049019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:36:59,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:36:59,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:36:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316767137] [2024-06-14 14:36:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:36:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:36:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:36:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:36:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:36:59,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:36:59,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:36:59,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:36:59,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:36:59,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:00,149 INFO L124 PetriNetUnfolderBase]: 143/268 cut-off events. [2024-06-14 14:37:00,150 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2024-06-14 14:37:00,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 268 events. 143/268 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 920 event pairs, 25 based on Foata normal form. 4/272 useless extension candidates. Maximal degree in co-relation 738. Up to 218 conditions per place. [2024-06-14 14:37:00,152 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 14:37:00,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 42 transitions, 223 flow [2024-06-14 14:37:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:37:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:37:00,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-14 14:37:00,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-14 14:37:00,153 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-14 14:37:00,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 42 transitions, 223 flow [2024-06-14 14:37:00,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 208 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 14:37:00,155 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-14 14:37:00,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-14 14:37:00,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 14:37:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-14 14:37:00,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:00,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:00,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:00,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:37:00,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:00,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash 348982451, now seen corresponding path program 1 times [2024-06-14 14:37:00,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:00,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608422294] [2024-06-14 14:37:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608422294] [2024-06-14 14:37:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608422294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:02,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:02,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:37:02,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585204234] [2024-06-14 14:37:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:02,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:37:02,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:37:02,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:37:02,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:37:02,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:02,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:02,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:37:02,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:03,074 INFO L124 PetriNetUnfolderBase]: 119/238 cut-off events. [2024-06-14 14:37:03,074 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-06-14 14:37:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 238 events. 119/238 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 867 event pairs, 63 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 673. Up to 211 conditions per place. [2024-06-14 14:37:03,077 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-06-14 14:37:03,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 206 flow [2024-06-14 14:37:03,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:37:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:37:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 14:37:03,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-14 14:37:03,079 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 6 states and 77 transitions. [2024-06-14 14:37:03,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 206 flow [2024-06-14 14:37:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 184 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 14:37:03,084 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 140 flow [2024-06-14 14:37:03,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-14 14:37:03,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-14 14:37:03,089 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 140 flow [2024-06-14 14:37:03,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:03,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:03,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:03,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:37:03,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:03,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:03,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2066444921, now seen corresponding path program 1 times [2024-06-14 14:37:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:03,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767123397] [2024-06-14 14:37:03,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:07,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767123397] [2024-06-14 14:37:07,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767123397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:07,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:07,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:37:07,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228178001] [2024-06-14 14:37:07,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:37:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:37:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:37:07,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:37:07,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:07,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:07,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:37:07,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:07,430 INFO L124 PetriNetUnfolderBase]: 117/235 cut-off events. [2024-06-14 14:37:07,430 INFO L125 PetriNetUnfolderBase]: For 447/447 co-relation queries the response was YES. [2024-06-14 14:37:07,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 721 conditions, 235 events. 117/235 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 856 event pairs, 62 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 699. Up to 205 conditions per place. [2024-06-14 14:37:07,433 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 26 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2024-06-14 14:37:07,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 230 flow [2024-06-14 14:37:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:37:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:37:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-14 14:37:07,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-14 14:37:07,435 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 140 flow. Second operand 6 states and 79 transitions. [2024-06-14 14:37:07,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 230 flow [2024-06-14 14:37:07,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 217 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 14:37:07,437 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 162 flow [2024-06-14 14:37:07,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 14:37:07,438 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 14:37:07,438 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 162 flow [2024-06-14 14:37:07,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:07,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:07,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:07,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:37:07,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:07,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:07,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2135383716, now seen corresponding path program 1 times [2024-06-14 14:37:07,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095358743] [2024-06-14 14:37:07,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:07,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:10,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:10,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095358743] [2024-06-14 14:37:10,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095358743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:10,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:10,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:37:10,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755223327] [2024-06-14 14:37:10,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:10,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:37:10,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:37:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:37:10,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:10,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:10,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:10,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:10,709 INFO L124 PetriNetUnfolderBase]: 147/278 cut-off events. [2024-06-14 14:37:10,709 INFO L125 PetriNetUnfolderBase]: For 684/684 co-relation queries the response was YES. [2024-06-14 14:37:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 278 events. 147/278 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 998 event pairs, 63 based on Foata normal form. 2/280 useless extension candidates. Maximal degree in co-relation 901. Up to 245 conditions per place. [2024-06-14 14:37:10,711 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 34 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2024-06-14 14:37:10,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 304 flow [2024-06-14 14:37:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 14:37:10,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 14:37:10,712 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 162 flow. Second operand 7 states and 89 transitions. [2024-06-14 14:37:10,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 304 flow [2024-06-14 14:37:10,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 285 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 14:37:10,716 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 205 flow [2024-06-14 14:37:10,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-14 14:37:10,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-14 14:37:10,717 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 205 flow [2024-06-14 14:37:10,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:10,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:10,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:37:10,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:10,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 358996050, now seen corresponding path program 2 times [2024-06-14 14:37:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088396573] [2024-06-14 14:37:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:10,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088396573] [2024-06-14 14:37:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088396573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:37:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498000669] [2024-06-14 14:37:13,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:13,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:37:13,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:13,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:37:13,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:37:13,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:13,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:13,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:13,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:13,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:13,709 INFO L124 PetriNetUnfolderBase]: 150/283 cut-off events. [2024-06-14 14:37:13,710 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2024-06-14 14:37:13,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 283 events. 150/283 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1005 event pairs, 63 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 994. Up to 250 conditions per place. [2024-06-14 14:37:13,712 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2024-06-14 14:37:13,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 332 flow [2024-06-14 14:37:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:37:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:37:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 14:37:13,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-14 14:37:13,713 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 205 flow. Second operand 6 states and 77 transitions. [2024-06-14 14:37:13,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 332 flow [2024-06-14 14:37:13,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 304 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 14:37:13,715 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 231 flow [2024-06-14 14:37:13,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-14 14:37:13,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-14 14:37:13,718 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 231 flow [2024-06-14 14:37:13,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:13,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:13,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:13,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:37:13,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:13,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash 359145780, now seen corresponding path program 3 times [2024-06-14 14:37:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317515265] [2024-06-14 14:37:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:16,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:16,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317515265] [2024-06-14 14:37:16,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317515265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:16,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:37:16,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759569679] [2024-06-14 14:37:16,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:37:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:16,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:37:16,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:37:16,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:16,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 231 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:16,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:16,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:16,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:17,191 INFO L124 PetriNetUnfolderBase]: 156/297 cut-off events. [2024-06-14 14:37:17,191 INFO L125 PetriNetUnfolderBase]: For 1184/1184 co-relation queries the response was YES. [2024-06-14 14:37:17,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 297 events. 156/297 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1107 event pairs, 66 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 1102. Up to 244 conditions per place. [2024-06-14 14:37:17,193 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2024-06-14 14:37:17,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 395 flow [2024-06-14 14:37:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:37:17,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:37:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-14 14:37:17,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2024-06-14 14:37:17,194 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 231 flow. Second operand 6 states and 79 transitions. [2024-06-14 14:37:17,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 395 flow [2024-06-14 14:37:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 372 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 14:37:17,196 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 279 flow [2024-06-14 14:37:17,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-14 14:37:17,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-14 14:37:17,197 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 279 flow [2024-06-14 14:37:17,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:17,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:17,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 14:37:17,198 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:17,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -448604518, now seen corresponding path program 1 times [2024-06-14 14:37:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58224657] [2024-06-14 14:37:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58224657] [2024-06-14 14:37:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58224657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664527209] [2024-06-14 14:37:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:20,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:20,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:20,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:20,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 279 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:20,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:20,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:20,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:20,956 INFO L124 PetriNetUnfolderBase]: 163/311 cut-off events. [2024-06-14 14:37:20,956 INFO L125 PetriNetUnfolderBase]: For 1501/1501 co-relation queries the response was YES. [2024-06-14 14:37:20,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1248 conditions, 311 events. 163/311 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1169 event pairs, 55 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1221. Up to 261 conditions per place. [2024-06-14 14:37:20,959 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 44 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2024-06-14 14:37:20,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 465 flow [2024-06-14 14:37:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:37:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:37:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 14:37:20,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 14:37:20,960 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 279 flow. Second operand 8 states and 101 transitions. [2024-06-14 14:37:20,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 465 flow [2024-06-14 14:37:20,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 449 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 14:37:20,963 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 345 flow [2024-06-14 14:37:20,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=345, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-14 14:37:20,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-14 14:37:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 345 flow [2024-06-14 14:37:20,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:20,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:20,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:20,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 14:37:20,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:20,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1751018876, now seen corresponding path program 2 times [2024-06-14 14:37:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119368303] [2024-06-14 14:37:20,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:23,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119368303] [2024-06-14 14:37:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119368303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:23,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:23,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882052556] [2024-06-14 14:37:23,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:23,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:23,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:24,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 345 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:24,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:24,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:24,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:24,296 INFO L124 PetriNetUnfolderBase]: 170/326 cut-off events. [2024-06-14 14:37:24,296 INFO L125 PetriNetUnfolderBase]: For 1895/1895 co-relation queries the response was YES. [2024-06-14 14:37:24,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 326 events. 170/326 cut-off events. For 1895/1895 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1257 event pairs, 60 based on Foata normal form. 1/327 useless extension candidates. Maximal degree in co-relation 1378. Up to 282 conditions per place. [2024-06-14 14:37:24,298 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2024-06-14 14:37:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 539 flow [2024-06-14 14:37:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:37:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:37:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 14:37:24,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 14:37:24,300 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 345 flow. Second operand 8 states and 99 transitions. [2024-06-14 14:37:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 539 flow [2024-06-14 14:37:24,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 490 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 14:37:24,303 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 378 flow [2024-06-14 14:37:24,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-14 14:37:24,303 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-14 14:37:24,303 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 378 flow [2024-06-14 14:37:24,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:24,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:24,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:24,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 14:37:24,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:24,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:24,305 INFO L85 PathProgramCache]: Analyzing trace with hash -920208844, now seen corresponding path program 1 times [2024-06-14 14:37:24,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:24,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27647987] [2024-06-14 14:37:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:24,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:27,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:27,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27647987] [2024-06-14 14:37:27,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27647987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:27,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:27,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:27,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909591062] [2024-06-14 14:37:27,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:27,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:27,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:27,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:27,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:27,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 378 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:27,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:27,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:27,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:28,144 INFO L124 PetriNetUnfolderBase]: 176/336 cut-off events. [2024-06-14 14:37:28,145 INFO L125 PetriNetUnfolderBase]: For 2285/2285 co-relation queries the response was YES. [2024-06-14 14:37:28,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 336 events. 176/336 cut-off events. For 2285/2285 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1297 event pairs, 59 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 1457. Up to 288 conditions per place. [2024-06-14 14:37:28,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 16 changer transitions 0/69 dead transitions. [2024-06-14 14:37:28,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 69 transitions, 560 flow [2024-06-14 14:37:28,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:37:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:37:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 14:37:28,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:37:28,148 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 378 flow. Second operand 8 states and 100 transitions. [2024-06-14 14:37:28,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 69 transitions, 560 flow [2024-06-14 14:37:28,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 520 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 14:37:28,152 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 403 flow [2024-06-14 14:37:28,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=403, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-06-14 14:37:28,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-14 14:37:28,153 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 403 flow [2024-06-14 14:37:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:28,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:28,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 14:37:28,153 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:28,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash 870430346, now seen corresponding path program 3 times [2024-06-14 14:37:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855146026] [2024-06-14 14:37:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855146026] [2024-06-14 14:37:31,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855146026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:31,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227919887] [2024-06-14 14:37:31,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:31,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:31,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:31,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:31,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:31,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:31,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:31,841 INFO L124 PetriNetUnfolderBase]: 174/333 cut-off events. [2024-06-14 14:37:31,841 INFO L125 PetriNetUnfolderBase]: For 2531/2531 co-relation queries the response was YES. [2024-06-14 14:37:31,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 333 events. 174/333 cut-off events. For 2531/2531 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1288 event pairs, 54 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 1503. Up to 272 conditions per place. [2024-06-14 14:37:31,843 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 46 selfloop transitions, 21 changer transitions 0/70 dead transitions. [2024-06-14 14:37:31,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 591 flow [2024-06-14 14:37:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-14 14:37:31,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-14 14:37:31,844 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 403 flow. Second operand 7 states and 90 transitions. [2024-06-14 14:37:31,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 591 flow [2024-06-14 14:37:31,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 550 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 14:37:31,847 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 447 flow [2024-06-14 14:37:31,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=447, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-14 14:37:31,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-06-14 14:37:31,848 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 447 flow [2024-06-14 14:37:31,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:31,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:31,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:31,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 14:37:31,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:31,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1303968120, now seen corresponding path program 4 times [2024-06-14 14:37:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:31,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452012764] [2024-06-14 14:37:31,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:31,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452012764] [2024-06-14 14:37:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452012764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:35,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:35,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:35,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121130386] [2024-06-14 14:37:35,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:35,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:35,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:35,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:35,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:35,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:35,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:35,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:35,582 INFO L124 PetriNetUnfolderBase]: 172/330 cut-off events. [2024-06-14 14:37:35,582 INFO L125 PetriNetUnfolderBase]: For 2870/2870 co-relation queries the response was YES. [2024-06-14 14:37:35,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 330 events. 172/330 cut-off events. For 2870/2870 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1280 event pairs, 59 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1540. Up to 282 conditions per place. [2024-06-14 14:37:35,585 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 49 selfloop transitions, 16 changer transitions 0/68 dead transitions. [2024-06-14 14:37:35,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 597 flow [2024-06-14 14:37:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-14 14:37:35,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009216589861751 [2024-06-14 14:37:35,587 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 447 flow. Second operand 7 states and 87 transitions. [2024-06-14 14:37:35,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 597 flow [2024-06-14 14:37:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 534 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-14 14:37:35,590 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 423 flow [2024-06-14 14:37:35,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=423, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-14 14:37:35,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 14:37:35,591 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 423 flow [2024-06-14 14:37:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:35,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:35,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:35,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 14:37:35,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:35,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1303967934, now seen corresponding path program 2 times [2024-06-14 14:37:35,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:35,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513829968] [2024-06-14 14:37:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:35,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:39,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:39,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:39,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513829968] [2024-06-14 14:37:39,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513829968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:39,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:39,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:39,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819465425] [2024-06-14 14:37:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:39,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:39,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 423 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:39,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:39,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:39,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:39,567 INFO L124 PetriNetUnfolderBase]: 178/340 cut-off events. [2024-06-14 14:37:39,568 INFO L125 PetriNetUnfolderBase]: For 2387/2387 co-relation queries the response was YES. [2024-06-14 14:37:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 340 events. 178/340 cut-off events. For 2387/2387 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1326 event pairs, 59 based on Foata normal form. 2/342 useless extension candidates. Maximal degree in co-relation 1496. Up to 280 conditions per place. [2024-06-14 14:37:39,570 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 47 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-14 14:37:39,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 603 flow [2024-06-14 14:37:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 14:37:39,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 14:37:39,572 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 423 flow. Second operand 7 states and 89 transitions. [2024-06-14 14:37:39,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 603 flow [2024-06-14 14:37:39,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 559 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 14:37:39,579 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 463 flow [2024-06-14 14:37:39,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-14 14:37:39,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-14 14:37:39,580 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 463 flow [2024-06-14 14:37:39,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:39,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:39,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:39,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 14:37:39,580 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:39,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash -662096814, now seen corresponding path program 3 times [2024-06-14 14:37:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:39,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936802620] [2024-06-14 14:37:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:43,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:43,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936802620] [2024-06-14 14:37:43,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936802620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:43,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:43,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884737450] [2024-06-14 14:37:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:43,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:43,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 463 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:43,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:43,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:43,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:43,716 INFO L124 PetriNetUnfolderBase]: 184/350 cut-off events. [2024-06-14 14:37:43,716 INFO L125 PetriNetUnfolderBase]: For 2884/2884 co-relation queries the response was YES. [2024-06-14 14:37:43,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1671 conditions, 350 events. 184/350 cut-off events. For 2884/2884 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1377 event pairs, 62 based on Foata normal form. 2/352 useless extension candidates. Maximal degree in co-relation 1635. Up to 287 conditions per place. [2024-06-14 14:37:43,719 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 20 changer transitions 0/73 dead transitions. [2024-06-14 14:37:43,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 657 flow [2024-06-14 14:37:43,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:43,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 14:37:43,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 14:37:43,720 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 463 flow. Second operand 7 states and 89 transitions. [2024-06-14 14:37:43,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 657 flow [2024-06-14 14:37:43,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 597 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 14:37:43,724 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 487 flow [2024-06-14 14:37:43,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=487, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-06-14 14:37:43,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 14:37:43,725 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 487 flow [2024-06-14 14:37:43,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:43,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:43,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 14:37:43,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:43,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:43,726 INFO L85 PathProgramCache]: Analyzing trace with hash 995590324, now seen corresponding path program 4 times [2024-06-14 14:37:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:43,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019926966] [2024-06-14 14:37:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:47,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:47,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:47,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019926966] [2024-06-14 14:37:47,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019926966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:47,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:47,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:47,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118504777] [2024-06-14 14:37:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:47,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:47,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:47,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:47,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:47,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:47,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:47,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:47,874 INFO L124 PetriNetUnfolderBase]: 182/347 cut-off events. [2024-06-14 14:37:47,874 INFO L125 PetriNetUnfolderBase]: For 2737/2737 co-relation queries the response was YES. [2024-06-14 14:37:47,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 347 events. 182/347 cut-off events. For 2737/2737 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1359 event pairs, 62 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1603. Up to 266 conditions per place. [2024-06-14 14:37:47,876 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 45 selfloop transitions, 29 changer transitions 0/77 dead transitions. [2024-06-14 14:37:47,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 685 flow [2024-06-14 14:37:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 14:37:47,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 14:37:47,878 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 487 flow. Second operand 7 states and 89 transitions. [2024-06-14 14:37:47,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 685 flow [2024-06-14 14:37:47,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 77 transitions, 631 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 14:37:47,882 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 545 flow [2024-06-14 14:37:47,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-06-14 14:37:47,882 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 14:37:47,883 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 545 flow [2024-06-14 14:37:47,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:47,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:47,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:47,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 14:37:47,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:47,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:47,884 INFO L85 PathProgramCache]: Analyzing trace with hash 995599252, now seen corresponding path program 1 times [2024-06-14 14:37:47,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:47,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484543734] [2024-06-14 14:37:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:47,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:51,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:51,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484543734] [2024-06-14 14:37:51,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484543734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:51,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:51,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:37:51,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104749637] [2024-06-14 14:37:51,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:51,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:37:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:51,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:37:51,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:37:51,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:51,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 545 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:51,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:51,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:51,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:52,040 INFO L124 PetriNetUnfolderBase]: 180/343 cut-off events. [2024-06-14 14:37:52,040 INFO L125 PetriNetUnfolderBase]: For 3099/3099 co-relation queries the response was YES. [2024-06-14 14:37:52,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 343 events. 180/343 cut-off events. For 3099/3099 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1322 event pairs, 69 based on Foata normal form. 1/344 useless extension candidates. Maximal degree in co-relation 1666. Up to 307 conditions per place. [2024-06-14 14:37:52,043 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 63 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2024-06-14 14:37:52,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 78 transitions, 719 flow [2024-06-14 14:37:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:37:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:37:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 14:37:52,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-14 14:37:52,045 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 545 flow. Second operand 7 states and 85 transitions. [2024-06-14 14:37:52,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 78 transitions, 719 flow [2024-06-14 14:37:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 687 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 14:37:52,049 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 557 flow [2024-06-14 14:37:52,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=557, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-06-14 14:37:52,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 14:37:52,050 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 557 flow [2024-06-14 14:37:52,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:52,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:52,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 14:37:52,051 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:52,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1029714512, now seen corresponding path program 1 times [2024-06-14 14:37:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:52,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243145878] [2024-06-14 14:37:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:52,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:37:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:37:56,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:37:56,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243145878] [2024-06-14 14:37:56,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243145878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:37:56,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:37:56,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:37:56,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959264095] [2024-06-14 14:37:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:37:56,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:37:56,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:37:56,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:37:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:37:57,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:37:57,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 557 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:57,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:37:57,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:37:57,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:37:57,340 INFO L124 PetriNetUnfolderBase]: 183/349 cut-off events. [2024-06-14 14:37:57,341 INFO L125 PetriNetUnfolderBase]: For 3325/3325 co-relation queries the response was YES. [2024-06-14 14:37:57,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 349 events. 183/349 cut-off events. For 3325/3325 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1350 event pairs, 51 based on Foata normal form. 1/350 useless extension candidates. Maximal degree in co-relation 1745. Up to 291 conditions per place. [2024-06-14 14:37:57,343 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2024-06-14 14:37:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 781 flow [2024-06-14 14:37:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:37:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:37:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 14:37:57,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 14:37:57,344 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 557 flow. Second operand 9 states and 111 transitions. [2024-06-14 14:37:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 781 flow [2024-06-14 14:37:57,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 87 transitions, 720 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 14:37:57,349 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 567 flow [2024-06-14 14:37:57,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=567, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-06-14 14:37:57,349 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-14 14:37:57,350 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 567 flow [2024-06-14 14:37:57,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:37:57,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:37:57,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:37:57,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 14:37:57,350 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:37:57,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:37:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1552988706, now seen corresponding path program 2 times [2024-06-14 14:37:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:37:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216565661] [2024-06-14 14:37:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:37:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:37:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:01,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216565661] [2024-06-14 14:38:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216565661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:01,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293728498] [2024-06-14 14:38:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:01,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:02,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:02,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 567 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:02,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:02,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:02,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:02,324 INFO L124 PetriNetUnfolderBase]: 186/356 cut-off events. [2024-06-14 14:38:02,324 INFO L125 PetriNetUnfolderBase]: For 3795/3795 co-relation queries the response was YES. [2024-06-14 14:38:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 356 events. 186/356 cut-off events. For 3795/3795 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1402 event pairs, 57 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1806. Up to 307 conditions per place. [2024-06-14 14:38:02,327 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-14 14:38:02,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 795 flow [2024-06-14 14:38:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:38:02,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:38:02,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 14:38:02,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 14:38:02,329 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 567 flow. Second operand 9 states and 109 transitions. [2024-06-14 14:38:02,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 795 flow [2024-06-14 14:38:02,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 740 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:02,336 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 579 flow [2024-06-14 14:38:02,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-14 14:38:02,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-14 14:38:02,337 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 579 flow [2024-06-14 14:38:02,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:02,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:02,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:02,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 14:38:02,338 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:02,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash -912034566, now seen corresponding path program 3 times [2024-06-14 14:38:02,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:02,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419047885] [2024-06-14 14:38:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:09,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:09,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419047885] [2024-06-14 14:38:09,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419047885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:09,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:09,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:09,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923826716] [2024-06-14 14:38:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:09,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 14:38:09,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 579 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:09,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:09,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 14:38:09,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:10,138 INFO L124 PetriNetUnfolderBase]: 189/361 cut-off events. [2024-06-14 14:38:10,138 INFO L125 PetriNetUnfolderBase]: For 4308/4308 co-relation queries the response was YES. [2024-06-14 14:38:10,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1907 conditions, 361 events. 189/361 cut-off events. For 4308/4308 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1426 event pairs, 57 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1865. Up to 308 conditions per place. [2024-06-14 14:38:10,140 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-14 14:38:10,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 817 flow [2024-06-14 14:38:10,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:38:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:38:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 14:38:10,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-14 14:38:10,142 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 579 flow. Second operand 9 states and 101 transitions. [2024-06-14 14:38:10,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 817 flow [2024-06-14 14:38:10,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 766 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:10,147 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 603 flow [2024-06-14 14:38:10,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-14 14:38:10,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2024-06-14 14:38:10,148 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 603 flow [2024-06-14 14:38:10,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:10,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:10,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:10,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 14:38:10,148 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:10,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash -912034349, now seen corresponding path program 1 times [2024-06-14 14:38:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:10,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343031833] [2024-06-14 14:38:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:10,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:14,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:14,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343031833] [2024-06-14 14:38:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343031833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:14,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:14,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853505915] [2024-06-14 14:38:14,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:14,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:14,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:14,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:14,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:14,398 INFO L124 PetriNetUnfolderBase]: 195/371 cut-off events. [2024-06-14 14:38:14,398 INFO L125 PetriNetUnfolderBase]: For 4910/4910 co-relation queries the response was YES. [2024-06-14 14:38:14,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 371 events. 195/371 cut-off events. For 4910/4910 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1473 event pairs, 56 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1953. Up to 315 conditions per place. [2024-06-14 14:38:14,401 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 19 changer transitions 0/93 dead transitions. [2024-06-14 14:38:14,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 853 flow [2024-06-14 14:38:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:38:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:38:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 14:38:14,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 14:38:14,402 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 603 flow. Second operand 9 states and 111 transitions. [2024-06-14 14:38:14,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 853 flow [2024-06-14 14:38:14,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 93 transitions, 794 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:14,409 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 630 flow [2024-06-14 14:38:14,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=630, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-06-14 14:38:14,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-14 14:38:14,410 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 630 flow [2024-06-14 14:38:14,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:14,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:14,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 14:38:14,410 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:14,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash 591726602, now seen corresponding path program 4 times [2024-06-14 14:38:14,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:14,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169013933] [2024-06-14 14:38:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:14,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:18,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169013933] [2024-06-14 14:38:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169013933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:18,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:18,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296293983] [2024-06-14 14:38:18,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:18,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:18,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:18,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 630 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:18,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:18,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:18,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:19,058 INFO L124 PetriNetUnfolderBase]: 198/378 cut-off events. [2024-06-14 14:38:19,059 INFO L125 PetriNetUnfolderBase]: For 5269/5269 co-relation queries the response was YES. [2024-06-14 14:38:19,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 378 events. 198/378 cut-off events. For 5269/5269 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1511 event pairs, 50 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 2049. Up to 304 conditions per place. [2024-06-14 14:38:19,061 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 64 selfloop transitions, 27 changer transitions 0/94 dead transitions. [2024-06-14 14:38:19,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 94 transitions, 876 flow [2024-06-14 14:38:19,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 14:38:19,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:38:19,063 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 630 flow. Second operand 8 states and 100 transitions. [2024-06-14 14:38:19,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 94 transitions, 876 flow [2024-06-14 14:38:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 94 transitions, 812 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:19,070 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 671 flow [2024-06-14 14:38:19,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=671, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-06-14 14:38:19,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-14 14:38:19,071 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 671 flow [2024-06-14 14:38:19,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:19,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:19,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:19,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 14:38:19,071 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:19,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:19,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1900307309, now seen corresponding path program 2 times [2024-06-14 14:38:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:19,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708626243] [2024-06-14 14:38:19,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:19,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:23,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:23,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708626243] [2024-06-14 14:38:23,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708626243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:23,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:23,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:23,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261468042] [2024-06-14 14:38:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:23,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:23,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 671 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:23,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:23,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:23,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:23,630 INFO L124 PetriNetUnfolderBase]: 210/398 cut-off events. [2024-06-14 14:38:23,630 INFO L125 PetriNetUnfolderBase]: For 6729/6729 co-relation queries the response was YES. [2024-06-14 14:38:23,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 398 events. 210/398 cut-off events. For 6729/6729 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1619 event pairs, 56 based on Foata normal form. 4/402 useless extension candidates. Maximal degree in co-relation 2218. Up to 312 conditions per place. [2024-06-14 14:38:23,633 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 67 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2024-06-14 14:38:23,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 96 transitions, 927 flow [2024-06-14 14:38:23,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 14:38:23,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 14:38:23,635 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 671 flow. Second operand 8 states and 101 transitions. [2024-06-14 14:38:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 96 transitions, 927 flow [2024-06-14 14:38:23,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 96 transitions, 842 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 14:38:23,642 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 695 flow [2024-06-14 14:38:23,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=695, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2024-06-14 14:38:23,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-14 14:38:23,643 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 695 flow [2024-06-14 14:38:23,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:23,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:23,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 14:38:23,643 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:23,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1397851736, now seen corresponding path program 5 times [2024-06-14 14:38:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048526904] [2024-06-14 14:38:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:28,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:28,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048526904] [2024-06-14 14:38:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048526904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:28,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896613149] [2024-06-14 14:38:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:28,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:28,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:29,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:29,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 695 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:29,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:29,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:29,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:29,354 INFO L124 PetriNetUnfolderBase]: 213/405 cut-off events. [2024-06-14 14:38:29,354 INFO L125 PetriNetUnfolderBase]: For 5527/5527 co-relation queries the response was YES. [2024-06-14 14:38:29,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 405 events. 213/405 cut-off events. For 5527/5527 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1663 event pairs, 56 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 2223. Up to 333 conditions per place. [2024-06-14 14:38:29,357 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 26 changer transitions 0/98 dead transitions. [2024-06-14 14:38:29,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 943 flow [2024-06-14 14:38:29,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:38:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:38:29,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 14:38:29,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:38:29,369 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 695 flow. Second operand 9 states and 108 transitions. [2024-06-14 14:38:29,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 943 flow [2024-06-14 14:38:29,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 98 transitions, 870 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 14:38:29,377 INFO L231 Difference]: Finished difference. Result has 95 places, 88 transitions, 720 flow [2024-06-14 14:38:29,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=95, PETRI_TRANSITIONS=88} [2024-06-14 14:38:29,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-14 14:38:29,378 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 88 transitions, 720 flow [2024-06-14 14:38:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:29,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:29,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 14:38:29,379 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:29,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash 791178339, now seen corresponding path program 3 times [2024-06-14 14:38:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:29,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662494719] [2024-06-14 14:38:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:33,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:33,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:33,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662494719] [2024-06-14 14:38:33,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662494719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:33,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:33,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:33,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358484126] [2024-06-14 14:38:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:33,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:33,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:33,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:33,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 88 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:33,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:33,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:33,380 INFO L124 PetriNetUnfolderBase]: 225/425 cut-off events. [2024-06-14 14:38:33,380 INFO L125 PetriNetUnfolderBase]: For 6746/6746 co-relation queries the response was YES. [2024-06-14 14:38:33,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 425 events. 225/425 cut-off events. For 6746/6746 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 58 based on Foata normal form. 4/429 useless extension candidates. Maximal degree in co-relation 2354. Up to 344 conditions per place. [2024-06-14 14:38:33,386 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 23 changer transitions 0/100 dead transitions. [2024-06-14 14:38:33,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 100 transitions, 998 flow [2024-06-14 14:38:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 14:38:33,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 14:38:33,388 INFO L175 Difference]: Start difference. First operand has 95 places, 88 transitions, 720 flow. Second operand 8 states and 101 transitions. [2024-06-14 14:38:33,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 100 transitions, 998 flow [2024-06-14 14:38:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 918 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:33,396 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 744 flow [2024-06-14 14:38:33,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=744, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2024-06-14 14:38:33,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-14 14:38:33,397 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 744 flow [2024-06-14 14:38:33,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:33,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:33,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 14:38:33,398 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 791178122, now seen corresponding path program 6 times [2024-06-14 14:38:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458400767] [2024-06-14 14:38:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458400767] [2024-06-14 14:38:38,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458400767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:38,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:38,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:38,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477783596] [2024-06-14 14:38:38,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:38,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:38,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:38,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:38,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:38,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:38,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:38,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:38,449 INFO L124 PetriNetUnfolderBase]: 228/432 cut-off events. [2024-06-14 14:38:38,449 INFO L125 PetriNetUnfolderBase]: For 6251/6251 co-relation queries the response was YES. [2024-06-14 14:38:38,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 432 events. 228/432 cut-off events. For 6251/6251 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1801 event pairs, 58 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2398. Up to 358 conditions per place. [2024-06-14 14:38:38,452 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-14 14:38:38,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 101 transitions, 1010 flow [2024-06-14 14:38:38,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:38,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 14:38:38,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 14:38:38,453 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 744 flow. Second operand 8 states and 99 transitions. [2024-06-14 14:38:38,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 101 transitions, 1010 flow [2024-06-14 14:38:38,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 934 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 14:38:38,460 INFO L231 Difference]: Finished difference. Result has 98 places, 93 transitions, 757 flow [2024-06-14 14:38:38,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=757, PETRI_PLACES=98, PETRI_TRANSITIONS=93} [2024-06-14 14:38:38,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-14 14:38:38,461 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 93 transitions, 757 flow [2024-06-14 14:38:38,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:38,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 14:38:38,461 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:38,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:38,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1541951733, now seen corresponding path program 4 times [2024-06-14 14:38:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081173704] [2024-06-14 14:38:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:38,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:43,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:43,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:43,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081173704] [2024-06-14 14:38:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081173704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:43,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:43,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:43,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897021933] [2024-06-14 14:38:43,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:43,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:43,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:43,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:43,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:43,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:43,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 757 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:43,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:43,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:43,536 INFO L124 PetriNetUnfolderBase]: 231/436 cut-off events. [2024-06-14 14:38:43,536 INFO L125 PetriNetUnfolderBase]: For 6631/6631 co-relation queries the response was YES. [2024-06-14 14:38:43,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 436 events. 231/436 cut-off events. For 6631/6631 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1820 event pairs, 70 based on Foata normal form. 1/437 useless extension candidates. Maximal degree in co-relation 2406. Up to 392 conditions per place. [2024-06-14 14:38:43,539 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 86 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-14 14:38:43,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 102 transitions, 995 flow [2024-06-14 14:38:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 14:38:43,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 14:38:43,541 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 757 flow. Second operand 8 states and 94 transitions. [2024-06-14 14:38:43,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 102 transitions, 995 flow [2024-06-14 14:38:43,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 922 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-14 14:38:43,549 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 743 flow [2024-06-14 14:38:43,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=743, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2024-06-14 14:38:43,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 14:38:43,550 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 743 flow [2024-06-14 14:38:43,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:43,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:43,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 14:38:43,551 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:43,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash 950037856, now seen corresponding path program 7 times [2024-06-14 14:38:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565079560] [2024-06-14 14:38:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:48,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565079560] [2024-06-14 14:38:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565079560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:48,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775465914] [2024-06-14 14:38:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:48,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:48,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:48,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:48,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:48,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:48,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 743 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:48,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:48,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:48,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:49,299 INFO L124 PetriNetUnfolderBase]: 229/434 cut-off events. [2024-06-14 14:38:49,300 INFO L125 PetriNetUnfolderBase]: For 6709/6709 co-relation queries the response was YES. [2024-06-14 14:38:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 434 events. 229/434 cut-off events. For 6709/6709 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1810 event pairs, 59 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 2367. Up to 333 conditions per place. [2024-06-14 14:38:49,302 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 38 changer transitions 0/108 dead transitions. [2024-06-14 14:38:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 1042 flow [2024-06-14 14:38:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:38:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:38:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 14:38:49,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:38:49,304 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 743 flow. Second operand 10 states and 120 transitions. [2024-06-14 14:38:49,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 1042 flow [2024-06-14 14:38:49,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 108 transitions, 998 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:38:49,312 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 861 flow [2024-06-14 14:38:49,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=861, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2024-06-14 14:38:49,313 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-14 14:38:49,313 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 861 flow [2024-06-14 14:38:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:49,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:49,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:49,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 14:38:49,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:49,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash 798529989, now seen corresponding path program 5 times [2024-06-14 14:38:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:49,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419989924] [2024-06-14 14:38:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:49,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419989924] [2024-06-14 14:38:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419989924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:53,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:53,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:53,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657797828] [2024-06-14 14:38:53,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:53,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:53,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:53,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:53,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 861 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:53,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:53,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:53,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:53,445 INFO L124 PetriNetUnfolderBase]: 230/436 cut-off events. [2024-06-14 14:38:53,446 INFO L125 PetriNetUnfolderBase]: For 7495/7495 co-relation queries the response was YES. [2024-06-14 14:38:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 436 events. 230/436 cut-off events. For 7495/7495 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1824 event pairs, 58 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 2466. Up to 292 conditions per place. [2024-06-14 14:38:53,461 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 42 changer transitions 0/113 dead transitions. [2024-06-14 14:38:53,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 1221 flow [2024-06-14 14:38:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions. [2024-06-14 14:38:53,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42338709677419356 [2024-06-14 14:38:53,464 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 861 flow. Second operand 8 states and 105 transitions. [2024-06-14 14:38:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 113 transitions, 1221 flow [2024-06-14 14:38:53,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 113 transitions, 1091 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-14 14:38:53,473 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 886 flow [2024-06-14 14:38:53,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=886, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-06-14 14:38:53,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-14 14:38:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 886 flow [2024-06-14 14:38:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 14:38:53,475 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:53,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash 798806819, now seen corresponding path program 1 times [2024-06-14 14:38:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:53,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957641522] [2024-06-14 14:38:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:38:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:38:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:38:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957641522] [2024-06-14 14:38:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957641522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:38:57,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:38:57,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:38:57,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632497551] [2024-06-14 14:38:57,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:38:57,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:38:57,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:38:57,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:38:57,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:38:57,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:38:57,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 886 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:57,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:38:57,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:38:57,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:38:57,798 INFO L124 PetriNetUnfolderBase]: 227/430 cut-off events. [2024-06-14 14:38:57,798 INFO L125 PetriNetUnfolderBase]: For 6885/6885 co-relation queries the response was YES. [2024-06-14 14:38:57,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 430 events. 227/430 cut-off events. For 6885/6885 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1779 event pairs, 69 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 2374. Up to 380 conditions per place. [2024-06-14 14:38:57,801 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 95 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-14 14:38:57,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1120 flow [2024-06-14 14:38:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:38:57,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:38:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 14:38:57,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 14:38:57,802 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 886 flow. Second operand 8 states and 94 transitions. [2024-06-14 14:38:57,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1120 flow [2024-06-14 14:38:57,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 1045 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-14 14:38:57,811 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 841 flow [2024-06-14 14:38:57,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2024-06-14 14:38:57,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 79 predicate places. [2024-06-14 14:38:57,811 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 841 flow [2024-06-14 14:38:57,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:38:57,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:38:57,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:38:57,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 14:38:57,812 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:38:57,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:38:57,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1945037783, now seen corresponding path program 1 times [2024-06-14 14:38:57,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:38:57,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761410016] [2024-06-14 14:38:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:38:57,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:38:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:01,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:01,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761410016] [2024-06-14 14:39:01,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761410016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:01,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:01,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:01,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511868730] [2024-06-14 14:39:01,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:01,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:01,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:01,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 841 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:01,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:01,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:01,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:01,866 INFO L124 PetriNetUnfolderBase]: 236/452 cut-off events. [2024-06-14 14:39:01,866 INFO L125 PetriNetUnfolderBase]: For 7105/7105 co-relation queries the response was YES. [2024-06-14 14:39:01,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 452 events. 236/452 cut-off events. For 7105/7105 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1953 event pairs, 45 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2420. Up to 372 conditions per place. [2024-06-14 14:39:01,869 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 100 selfloop transitions, 18 changer transitions 0/121 dead transitions. [2024-06-14 14:39:01,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 1135 flow [2024-06-14 14:39:01,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:01,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 14:39:01,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-14 14:39:01,870 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 841 flow. Second operand 9 states and 112 transitions. [2024-06-14 14:39:01,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 1135 flow [2024-06-14 14:39:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 121 transitions, 1103 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:01,879 INFO L231 Difference]: Finished difference. Result has 113 places, 105 transitions, 871 flow [2024-06-14 14:39:01,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=871, PETRI_PLACES=113, PETRI_TRANSITIONS=105} [2024-06-14 14:39:01,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-14 14:39:01,880 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 105 transitions, 871 flow [2024-06-14 14:39:01,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:01,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:01,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:01,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 14:39:01,880 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:01,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1856382743, now seen corresponding path program 2 times [2024-06-14 14:39:01,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749969067] [2024-06-14 14:39:01,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749969067] [2024-06-14 14:39:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749969067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873942249] [2024-06-14 14:39:05,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:05,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:05,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:05,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:05,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:05,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 105 transitions, 871 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:05,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:05,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:05,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:06,219 INFO L124 PetriNetUnfolderBase]: 240/460 cut-off events. [2024-06-14 14:39:06,219 INFO L125 PetriNetUnfolderBase]: For 7491/7491 co-relation queries the response was YES. [2024-06-14 14:39:06,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 460 events. 240/460 cut-off events. For 7491/7491 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2007 event pairs, 54 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2503. Up to 389 conditions per place. [2024-06-14 14:39:06,222 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2024-06-14 14:39:06,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 1155 flow [2024-06-14 14:39:06,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:06,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 14:39:06,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 14:39:06,223 INFO L175 Difference]: Start difference. First operand has 113 places, 105 transitions, 871 flow. Second operand 9 states and 111 transitions. [2024-06-14 14:39:06,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 1155 flow [2024-06-14 14:39:06,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 1113 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:06,233 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 887 flow [2024-06-14 14:39:06,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-06-14 14:39:06,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-14 14:39:06,234 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 887 flow [2024-06-14 14:39:06,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:06,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:06,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:06,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 14:39:06,234 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:06,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:06,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1391671797, now seen corresponding path program 3 times [2024-06-14 14:39:06,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:06,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810771631] [2024-06-14 14:39:06,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:06,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810771631] [2024-06-14 14:39:09,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810771631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:09,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:09,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:09,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661371215] [2024-06-14 14:39:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:09,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:09,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:09,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:10,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:10,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 887 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:10,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:10,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:10,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:10,286 INFO L124 PetriNetUnfolderBase]: 249/479 cut-off events. [2024-06-14 14:39:10,286 INFO L125 PetriNetUnfolderBase]: For 8248/8248 co-relation queries the response was YES. [2024-06-14 14:39:10,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2654 conditions, 479 events. 249/479 cut-off events. For 8248/8248 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2149 event pairs, 29 based on Foata normal form. 2/481 useless extension candidates. Maximal degree in co-relation 2597. Up to 371 conditions per place. [2024-06-14 14:39:10,289 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 101 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-14 14:39:10,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 124 transitions, 1191 flow [2024-06-14 14:39:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:10,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:10,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 14:39:10,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 14:39:10,290 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 887 flow. Second operand 9 states and 110 transitions. [2024-06-14 14:39:10,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 124 transitions, 1191 flow [2024-06-14 14:39:10,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 1143 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 14:39:10,300 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 907 flow [2024-06-14 14:39:10,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=907, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2024-06-14 14:39:10,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 14:39:10,300 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 907 flow [2024-06-14 14:39:10,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:10,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:10,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:10,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 14:39:10,301 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:10,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:10,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1856377783, now seen corresponding path program 1 times [2024-06-14 14:39:10,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:10,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584170349] [2024-06-14 14:39:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:10,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:15,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:15,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584170349] [2024-06-14 14:39:15,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584170349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:15,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:15,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:39:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224974552] [2024-06-14 14:39:15,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:15,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:39:15,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:39:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:39:15,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:15,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:15,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:15,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:15,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:16,183 INFO L124 PetriNetUnfolderBase]: 255/489 cut-off events. [2024-06-14 14:39:16,183 INFO L125 PetriNetUnfolderBase]: For 8959/8959 co-relation queries the response was YES. [2024-06-14 14:39:16,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 489 events. 255/489 cut-off events. For 8959/8959 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2189 event pairs, 53 based on Foata normal form. 2/491 useless extension candidates. Maximal degree in co-relation 2695. Up to 415 conditions per place. [2024-06-14 14:39:16,187 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 100 selfloop transitions, 22 changer transitions 0/125 dead transitions. [2024-06-14 14:39:16,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 125 transitions, 1231 flow [2024-06-14 14:39:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:39:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:39:16,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 14:39:16,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 14:39:16,188 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 907 flow. Second operand 10 states and 122 transitions. [2024-06-14 14:39:16,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 125 transitions, 1231 flow [2024-06-14 14:39:16,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 1158 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 14:39:16,201 INFO L231 Difference]: Finished difference. Result has 119 places, 110 transitions, 923 flow [2024-06-14 14:39:16,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=923, PETRI_PLACES=119, PETRI_TRANSITIONS=110} [2024-06-14 14:39:16,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-14 14:39:16,202 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 110 transitions, 923 flow [2024-06-14 14:39:16,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:16,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:16,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:16,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 14:39:16,202 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:16,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -900870533, now seen corresponding path program 4 times [2024-06-14 14:39:16,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:16,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574076816] [2024-06-14 14:39:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574076816] [2024-06-14 14:39:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574076816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125640111] [2024-06-14 14:39:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:19,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:19,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 110 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:19,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:19,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:19,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:20,190 INFO L124 PetriNetUnfolderBase]: 264/508 cut-off events. [2024-06-14 14:39:20,191 INFO L125 PetriNetUnfolderBase]: For 9516/9516 co-relation queries the response was YES. [2024-06-14 14:39:20,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 508 events. 264/508 cut-off events. For 9516/9516 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2325 event pairs, 60 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2764. Up to 439 conditions per place. [2024-06-14 14:39:20,194 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2024-06-14 14:39:20,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 127 transitions, 1235 flow [2024-06-14 14:39:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 14:39:20,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 14:39:20,195 INFO L175 Difference]: Start difference. First operand has 119 places, 110 transitions, 923 flow. Second operand 9 states and 110 transitions. [2024-06-14 14:39:20,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 127 transitions, 1235 flow [2024-06-14 14:39:20,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 127 transitions, 1164 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 14:39:20,208 INFO L231 Difference]: Finished difference. Result has 121 places, 112 transitions, 914 flow [2024-06-14 14:39:20,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=914, PETRI_PLACES=121, PETRI_TRANSITIONS=112} [2024-06-14 14:39:20,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-14 14:39:20,208 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 112 transitions, 914 flow [2024-06-14 14:39:20,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:20,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:20,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:20,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 14:39:20,209 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:20,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:20,209 INFO L85 PathProgramCache]: Analyzing trace with hash -898013573, now seen corresponding path program 5 times [2024-06-14 14:39:20,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:20,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176803831] [2024-06-14 14:39:20,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:20,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:23,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:23,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:23,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176803831] [2024-06-14 14:39:23,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176803831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:23,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:23,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181427932] [2024-06-14 14:39:23,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:23,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:23,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:23,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:23,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 112 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:23,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:23,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:23,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:24,244 INFO L124 PetriNetUnfolderBase]: 268/516 cut-off events. [2024-06-14 14:39:24,244 INFO L125 PetriNetUnfolderBase]: For 10084/10084 co-relation queries the response was YES. [2024-06-14 14:39:24,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 516 events. 268/516 cut-off events. For 10084/10084 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2404 event pairs, 62 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2785. Up to 456 conditions per place. [2024-06-14 14:39:24,247 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 108 selfloop transitions, 15 changer transitions 0/126 dead transitions. [2024-06-14 14:39:24,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 126 transitions, 1214 flow [2024-06-14 14:39:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:24,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 14:39:24,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 14:39:24,249 INFO L175 Difference]: Start difference. First operand has 121 places, 112 transitions, 914 flow. Second operand 9 states and 109 transitions. [2024-06-14 14:39:24,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 126 transitions, 1214 flow [2024-06-14 14:39:24,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1172 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:24,262 INFO L231 Difference]: Finished difference. Result has 124 places, 113 transitions, 928 flow [2024-06-14 14:39:24,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=928, PETRI_PLACES=124, PETRI_TRANSITIONS=113} [2024-06-14 14:39:24,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 14:39:24,263 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 113 transitions, 928 flow [2024-06-14 14:39:24,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:24,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:24,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:24,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 14:39:24,263 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:24,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:24,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1791522603, now seen corresponding path program 6 times [2024-06-14 14:39:24,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:24,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220858157] [2024-06-14 14:39:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220858157] [2024-06-14 14:39:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220858157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633374978] [2024-06-14 14:39:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:28,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:28,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:28,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:28,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 113 transitions, 928 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:28,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:28,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:28,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:28,406 INFO L124 PetriNetUnfolderBase]: 272/524 cut-off events. [2024-06-14 14:39:28,406 INFO L125 PetriNetUnfolderBase]: For 10761/10761 co-relation queries the response was YES. [2024-06-14 14:39:28,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2900 conditions, 524 events. 272/524 cut-off events. For 10761/10761 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2439 event pairs, 64 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 2841. Up to 466 conditions per place. [2024-06-14 14:39:28,410 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 109 selfloop transitions, 15 changer transitions 0/127 dead transitions. [2024-06-14 14:39:28,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 127 transitions, 1234 flow [2024-06-14 14:39:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 14:39:28,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:39:28,412 INFO L175 Difference]: Start difference. First operand has 124 places, 113 transitions, 928 flow. Second operand 9 states and 108 transitions. [2024-06-14 14:39:28,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 127 transitions, 1234 flow [2024-06-14 14:39:28,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 1188 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 14:39:28,427 INFO L231 Difference]: Finished difference. Result has 127 places, 115 transitions, 951 flow [2024-06-14 14:39:28,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=951, PETRI_PLACES=127, PETRI_TRANSITIONS=115} [2024-06-14 14:39:28,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-14 14:39:28,427 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 115 transitions, 951 flow [2024-06-14 14:39:28,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:28,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:28,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:28,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 14:39:28,428 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:28,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:28,428 INFO L85 PathProgramCache]: Analyzing trace with hash -898008613, now seen corresponding path program 2 times [2024-06-14 14:39:28,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:28,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963944314] [2024-06-14 14:39:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:32,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963944314] [2024-06-14 14:39:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963944314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:32,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:32,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:39:32,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513113087] [2024-06-14 14:39:32,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:39:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:39:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:39:32,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:32,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 115 transitions, 951 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:32,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:32,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:32,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:33,178 INFO L124 PetriNetUnfolderBase]: 278/534 cut-off events. [2024-06-14 14:39:33,178 INFO L125 PetriNetUnfolderBase]: For 11547/11547 co-relation queries the response was YES. [2024-06-14 14:39:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 534 events. 278/534 cut-off events. For 11547/11547 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2490 event pairs, 64 based on Foata normal form. 2/536 useless extension candidates. Maximal degree in co-relation 2929. Up to 471 conditions per place. [2024-06-14 14:39:33,182 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2024-06-14 14:39:33,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 131 transitions, 1289 flow [2024-06-14 14:39:33,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:39:33,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:39:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 14:39:33,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:39:33,183 INFO L175 Difference]: Start difference. First operand has 127 places, 115 transitions, 951 flow. Second operand 10 states and 120 transitions. [2024-06-14 14:39:33,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 131 transitions, 1289 flow [2024-06-14 14:39:33,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 131 transitions, 1243 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:33,198 INFO L231 Difference]: Finished difference. Result has 131 places, 117 transitions, 990 flow [2024-06-14 14:39:33,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=990, PETRI_PLACES=131, PETRI_TRANSITIONS=117} [2024-06-14 14:39:33,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 14:39:33,199 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 117 transitions, 990 flow [2024-06-14 14:39:33,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:33,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:33,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 14:39:33,199 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:33,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -782544463, now seen corresponding path program 3 times [2024-06-14 14:39:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:33,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696606925] [2024-06-14 14:39:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:40,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:40,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:40,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696606925] [2024-06-14 14:39:40,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696606925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:40,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:40,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:39:40,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568632047] [2024-06-14 14:39:40,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:40,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:39:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:39:40,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:39:40,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:40,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 117 transitions, 990 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:40,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:40,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:40,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:40,552 INFO L124 PetriNetUnfolderBase]: 286/549 cut-off events. [2024-06-14 14:39:40,552 INFO L125 PetriNetUnfolderBase]: For 12529/12529 co-relation queries the response was YES. [2024-06-14 14:39:40,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 549 events. 286/549 cut-off events. For 12529/12529 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2592 event pairs, 63 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3091. Up to 473 conditions per place. [2024-06-14 14:39:40,555 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 107 selfloop transitions, 25 changer transitions 0/135 dead transitions. [2024-06-14 14:39:40,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 135 transitions, 1428 flow [2024-06-14 14:39:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:39:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:39:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 14:39:40,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:39:40,556 INFO L175 Difference]: Start difference. First operand has 131 places, 117 transitions, 990 flow. Second operand 11 states and 132 transitions. [2024-06-14 14:39:40,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 135 transitions, 1428 flow [2024-06-14 14:39:40,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1361 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 14:39:40,574 INFO L231 Difference]: Finished difference. Result has 134 places, 121 transitions, 1058 flow [2024-06-14 14:39:40,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1058, PETRI_PLACES=134, PETRI_TRANSITIONS=121} [2024-06-14 14:39:40,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-14 14:39:40,575 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 121 transitions, 1058 flow [2024-06-14 14:39:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:40,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 14:39:40,576 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2131648787, now seen corresponding path program 4 times [2024-06-14 14:39:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984196311] [2024-06-14 14:39:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:45,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:45,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984196311] [2024-06-14 14:39:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984196311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:45,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:45,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:39:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806815632] [2024-06-14 14:39:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:39:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:39:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:39:45,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:45,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 121 transitions, 1058 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:45,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:45,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:45,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:46,052 INFO L124 PetriNetUnfolderBase]: 284/546 cut-off events. [2024-06-14 14:39:46,052 INFO L125 PetriNetUnfolderBase]: For 12450/12450 co-relation queries the response was YES. [2024-06-14 14:39:46,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3114 conditions, 546 events. 284/546 cut-off events. For 12450/12450 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2554 event pairs, 63 based on Foata normal form. 1/547 useless extension candidates. Maximal degree in co-relation 3051. Up to 471 conditions per place. [2024-06-14 14:39:46,055 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 24 changer transitions 0/133 dead transitions. [2024-06-14 14:39:46,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 133 transitions, 1348 flow [2024-06-14 14:39:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:39:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:39:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 14:39:46,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 14:39:46,056 INFO L175 Difference]: Start difference. First operand has 134 places, 121 transitions, 1058 flow. Second operand 10 states and 121 transitions. [2024-06-14 14:39:46,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 133 transitions, 1348 flow [2024-06-14 14:39:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 133 transitions, 1255 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-14 14:39:46,077 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1018 flow [2024-06-14 14:39:46,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1018, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-06-14 14:39:46,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-14 14:39:46,077 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1018 flow [2024-06-14 14:39:46,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:46,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:46,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:46,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 14:39:46,078 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:46,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash 265405803, now seen corresponding path program 7 times [2024-06-14 14:39:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:46,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226066320] [2024-06-14 14:39:46,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:46,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226066320] [2024-06-14 14:39:49,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226066320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:49,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734531191] [2024-06-14 14:39:49,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:49,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:49,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:49,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:49,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:49,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1018 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:49,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:49,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:49,856 INFO L124 PetriNetUnfolderBase]: 288/554 cut-off events. [2024-06-14 14:39:49,856 INFO L125 PetriNetUnfolderBase]: For 13682/13682 co-relation queries the response was YES. [2024-06-14 14:39:49,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3171 conditions, 554 events. 288/554 cut-off events. For 13682/13682 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2611 event pairs, 29 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3106. Up to 413 conditions per place. [2024-06-14 14:39:49,859 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 109 selfloop transitions, 23 changer transitions 0/135 dead transitions. [2024-06-14 14:39:49,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 135 transitions, 1338 flow [2024-06-14 14:39:49,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:39:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:39:49,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 14:39:49,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-14 14:39:49,861 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1018 flow. Second operand 8 states and 99 transitions. [2024-06-14 14:39:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 135 transitions, 1338 flow [2024-06-14 14:39:49,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 1285 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 14:39:49,883 INFO L231 Difference]: Finished difference. Result has 136 places, 122 transitions, 1047 flow [2024-06-14 14:39:49,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1047, PETRI_PLACES=136, PETRI_TRANSITIONS=122} [2024-06-14 14:39:49,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-14 14:39:49,885 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 122 transitions, 1047 flow [2024-06-14 14:39:49,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:49,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:49,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:49,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 14:39:49,890 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:49,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1476004531, now seen corresponding path program 8 times [2024-06-14 14:39:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007293396] [2024-06-14 14:39:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:49,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:53,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:53,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:53,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007293396] [2024-06-14 14:39:53,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007293396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:53,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:53,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:39:53,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607022078] [2024-06-14 14:39:53,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:53,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:39:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:39:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:39:53,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:53,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 122 transitions, 1047 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:53,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:53,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:53,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:54,233 INFO L124 PetriNetUnfolderBase]: 292/562 cut-off events. [2024-06-14 14:39:54,233 INFO L125 PetriNetUnfolderBase]: For 14737/14737 co-relation queries the response was YES. [2024-06-14 14:39:54,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 562 events. 292/562 cut-off events. For 14737/14737 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2653 event pairs, 56 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 3223. Up to 471 conditions per place. [2024-06-14 14:39:54,236 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 108 selfloop transitions, 24 changer transitions 0/135 dead transitions. [2024-06-14 14:39:54,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 135 transitions, 1367 flow [2024-06-14 14:39:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:39:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:39:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 14:39:54,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:39:54,241 INFO L175 Difference]: Start difference. First operand has 136 places, 122 transitions, 1047 flow. Second operand 8 states and 100 transitions. [2024-06-14 14:39:54,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 135 transitions, 1367 flow [2024-06-14 14:39:54,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 1295 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:54,265 INFO L231 Difference]: Finished difference. Result has 138 places, 123 transitions, 1059 flow [2024-06-14 14:39:54,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1059, PETRI_PLACES=138, PETRI_TRANSITIONS=123} [2024-06-14 14:39:54,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-14 14:39:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 1059 flow [2024-06-14 14:39:54,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:54,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:54,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:54,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 14:39:54,267 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:54,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:54,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1035028631, now seen corresponding path program 5 times [2024-06-14 14:39:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173436943] [2024-06-14 14:39:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:39:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:39:59,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:39:59,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173436943] [2024-06-14 14:39:59,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173436943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:39:59,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:39:59,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:39:59,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273203232] [2024-06-14 14:39:59,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:39:59,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:39:59,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:39:59,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:39:59,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:39:59,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:39:59,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 123 transitions, 1059 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:59,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:39:59,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:39:59,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:39:59,636 INFO L124 PetriNetUnfolderBase]: 298/574 cut-off events. [2024-06-14 14:39:59,637 INFO L125 PetriNetUnfolderBase]: For 13348/13348 co-relation queries the response was YES. [2024-06-14 14:39:59,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 574 events. 298/574 cut-off events. For 13348/13348 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2749 event pairs, 54 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3251. Up to 472 conditions per place. [2024-06-14 14:39:59,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 102 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-14 14:39:59,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 138 transitions, 1415 flow [2024-06-14 14:39:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:39:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:39:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 14:39:59,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 14:39:59,642 INFO L175 Difference]: Start difference. First operand has 138 places, 123 transitions, 1059 flow. Second operand 9 states and 111 transitions. [2024-06-14 14:39:59,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 138 transitions, 1415 flow [2024-06-14 14:39:59,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 138 transitions, 1351 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 14:39:59,665 INFO L231 Difference]: Finished difference. Result has 141 places, 125 transitions, 1122 flow [2024-06-14 14:39:59,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1122, PETRI_PLACES=141, PETRI_TRANSITIONS=125} [2024-06-14 14:39:59,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-14 14:39:59,666 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 125 transitions, 1122 flow [2024-06-14 14:39:59,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:39:59,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:39:59,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:39:59,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 14:39:59,667 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:39:59,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:39:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -919742421, now seen corresponding path program 9 times [2024-06-14 14:39:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:39:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620511578] [2024-06-14 14:39:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:39:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:39:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:03,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:03,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620511578] [2024-06-14 14:40:03,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620511578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:40:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841312990] [2024-06-14 14:40:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:03,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:40:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:40:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:40:03,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 125 transitions, 1122 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:03,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:03,790 INFO L124 PetriNetUnfolderBase]: 302/582 cut-off events. [2024-06-14 14:40:03,790 INFO L125 PetriNetUnfolderBase]: For 12798/12798 co-relation queries the response was YES. [2024-06-14 14:40:03,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 582 events. 302/582 cut-off events. For 12798/12798 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2813 event pairs, 63 based on Foata normal form. 2/584 useless extension candidates. Maximal degree in co-relation 3303. Up to 508 conditions per place. [2024-06-14 14:40:03,794 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 114 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2024-06-14 14:40:03,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 136 transitions, 1430 flow [2024-06-14 14:40:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:40:03,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:40:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 14:40:03,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 14:40:03,809 INFO L175 Difference]: Start difference. First operand has 141 places, 125 transitions, 1122 flow. Second operand 8 states and 97 transitions. [2024-06-14 14:40:03,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 136 transitions, 1430 flow [2024-06-14 14:40:03,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 136 transitions, 1331 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-14 14:40:03,832 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 1087 flow [2024-06-14 14:40:03,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1087, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2024-06-14 14:40:03,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-14 14:40:03,834 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 1087 flow [2024-06-14 14:40:03,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:03,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:03,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:03,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 14:40:03,835 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:03,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash -919557971, now seen corresponding path program 6 times [2024-06-14 14:40:03,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:03,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224017289] [2024-06-14 14:40:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:03,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:09,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:09,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224017289] [2024-06-14 14:40:09,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224017289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:09,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:09,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:09,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883658828] [2024-06-14 14:40:09,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:09,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:09,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:09,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:09,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:09,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:09,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 1087 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:09,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:09,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:09,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:09,974 INFO L124 PetriNetUnfolderBase]: 318/614 cut-off events. [2024-06-14 14:40:09,974 INFO L125 PetriNetUnfolderBase]: For 13334/13334 co-relation queries the response was YES. [2024-06-14 14:40:09,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 614 events. 318/614 cut-off events. For 13334/13334 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3006 event pairs, 66 based on Foata normal form. 2/616 useless extension candidates. Maximal degree in co-relation 3480. Up to 479 conditions per place. [2024-06-14 14:40:09,979 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-06-14 14:40:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 143 transitions, 1559 flow [2024-06-14 14:40:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:40:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:40:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 14:40:09,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 14:40:09,981 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 1087 flow. Second operand 9 states and 113 transitions. [2024-06-14 14:40:09,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 143 transitions, 1559 flow [2024-06-14 14:40:10,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 1505 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:40:10,004 INFO L231 Difference]: Finished difference. Result has 145 places, 131 transitions, 1216 flow [2024-06-14 14:40:10,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1216, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2024-06-14 14:40:10,004 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-14 14:40:10,004 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 1216 flow [2024-06-14 14:40:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:10,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:10,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 14:40:10,005 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:10,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1471357941, now seen corresponding path program 7 times [2024-06-14 14:40:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715413668] [2024-06-14 14:40:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:14,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:14,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715413668] [2024-06-14 14:40:14,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715413668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:14,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:14,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066251501] [2024-06-14 14:40:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:14,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:15,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:15,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 1216 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:15,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:15,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:15,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:15,357 INFO L124 PetriNetUnfolderBase]: 316/609 cut-off events. [2024-06-14 14:40:15,358 INFO L125 PetriNetUnfolderBase]: For 12566/12566 co-relation queries the response was YES. [2024-06-14 14:40:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3569 conditions, 609 events. 316/609 cut-off events. For 12566/12566 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2977 event pairs, 66 based on Foata normal form. 1/610 useless extension candidates. Maximal degree in co-relation 3499. Up to 478 conditions per place. [2024-06-14 14:40:15,361 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 39 changer transitions 0/145 dead transitions. [2024-06-14 14:40:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 1644 flow [2024-06-14 14:40:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:40:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:40:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 14:40:15,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 14:40:15,363 INFO L175 Difference]: Start difference. First operand has 145 places, 131 transitions, 1216 flow. Second operand 9 states and 114 transitions. [2024-06-14 14:40:15,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 1644 flow [2024-06-14 14:40:15,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 145 transitions, 1559 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-14 14:40:15,384 INFO L231 Difference]: Finished difference. Result has 148 places, 133 transitions, 1265 flow [2024-06-14 14:40:15,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1265, PETRI_PLACES=148, PETRI_TRANSITIONS=133} [2024-06-14 14:40:15,385 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-14 14:40:15,385 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 133 transitions, 1265 flow [2024-06-14 14:40:15,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:15,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:15,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 14:40:15,385 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:15,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1243458917, now seen corresponding path program 10 times [2024-06-14 14:40:15,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:15,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872747141] [2024-06-14 14:40:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:15,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:19,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872747141] [2024-06-14 14:40:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872747141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:19,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:40:19,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250395992] [2024-06-14 14:40:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:19,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:40:19,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:40:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:40:20,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:20,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 133 transitions, 1265 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:20,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:20,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:20,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:20,368 INFO L124 PetriNetUnfolderBase]: 313/606 cut-off events. [2024-06-14 14:40:20,368 INFO L125 PetriNetUnfolderBase]: For 11758/11758 co-relation queries the response was YES. [2024-06-14 14:40:20,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 606 events. 313/606 cut-off events. For 11758/11758 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2962 event pairs, 68 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 3441. Up to 523 conditions per place. [2024-06-14 14:40:20,372 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 118 selfloop transitions, 20 changer transitions 0/141 dead transitions. [2024-06-14 14:40:20,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 1559 flow [2024-06-14 14:40:20,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:40:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:40:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 14:40:20,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 14:40:20,373 INFO L175 Difference]: Start difference. First operand has 148 places, 133 transitions, 1265 flow. Second operand 8 states and 97 transitions. [2024-06-14 14:40:20,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 1559 flow [2024-06-14 14:40:20,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 141 transitions, 1469 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 14:40:20,396 INFO L231 Difference]: Finished difference. Result has 149 places, 133 transitions, 1219 flow [2024-06-14 14:40:20,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1219, PETRI_PLACES=149, PETRI_TRANSITIONS=133} [2024-06-14 14:40:20,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-14 14:40:20,397 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 133 transitions, 1219 flow [2024-06-14 14:40:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:20,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:20,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 14:40:20,397 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:20,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1243274467, now seen corresponding path program 8 times [2024-06-14 14:40:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:20,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979842992] [2024-06-14 14:40:20,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:26,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:26,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979842992] [2024-06-14 14:40:26,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979842992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:26,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:26,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:26,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279656633] [2024-06-14 14:40:26,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:26,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:26,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:26,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:26,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:26,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 133 transitions, 1219 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:26,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:26,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:26,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:26,482 INFO L124 PetriNetUnfolderBase]: 329/636 cut-off events. [2024-06-14 14:40:26,483 INFO L125 PetriNetUnfolderBase]: For 13162/13162 co-relation queries the response was YES. [2024-06-14 14:40:26,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 636 events. 329/636 cut-off events. For 13162/13162 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3163 event pairs, 66 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 3710. Up to 517 conditions per place. [2024-06-14 14:40:26,487 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 30 changer transitions 0/148 dead transitions. [2024-06-14 14:40:26,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 148 transitions, 1711 flow [2024-06-14 14:40:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:40:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:40:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 14:40:26,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050179211469534 [2024-06-14 14:40:26,489 INFO L175 Difference]: Start difference. First operand has 149 places, 133 transitions, 1219 flow. Second operand 9 states and 113 transitions. [2024-06-14 14:40:26,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 148 transitions, 1711 flow [2024-06-14 14:40:26,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 148 transitions, 1627 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 14:40:26,515 INFO L231 Difference]: Finished difference. Result has 151 places, 138 transitions, 1313 flow [2024-06-14 14:40:26,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1313, PETRI_PLACES=151, PETRI_TRANSITIONS=138} [2024-06-14 14:40:26,515 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 14:40:26,515 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 138 transitions, 1313 flow [2024-06-14 14:40:26,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:26,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:26,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 14:40:26,516 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:26,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1243280977, now seen corresponding path program 9 times [2024-06-14 14:40:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538978477] [2024-06-14 14:40:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:33,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538978477] [2024-06-14 14:40:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538978477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540620879] [2024-06-14 14:40:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:33,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:33,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:33,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:33,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 138 transitions, 1313 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:33,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:33,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:33,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:34,271 INFO L124 PetriNetUnfolderBase]: 327/633 cut-off events. [2024-06-14 14:40:34,271 INFO L125 PetriNetUnfolderBase]: For 13059/13059 co-relation queries the response was YES. [2024-06-14 14:40:34,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3773 conditions, 633 events. 327/633 cut-off events. For 13059/13059 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3123 event pairs, 66 based on Foata normal form. 1/634 useless extension candidates. Maximal degree in co-relation 3701. Up to 531 conditions per place. [2024-06-14 14:40:34,275 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 29 changer transitions 0/152 dead transitions. [2024-06-14 14:40:34,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 1749 flow [2024-06-14 14:40:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:40:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:40:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 14:40:34,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 14:40:34,276 INFO L175 Difference]: Start difference. First operand has 151 places, 138 transitions, 1313 flow. Second operand 9 states and 111 transitions. [2024-06-14 14:40:34,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 1749 flow [2024-06-14 14:40:34,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 152 transitions, 1611 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-14 14:40:34,300 INFO L231 Difference]: Finished difference. Result has 156 places, 144 transitions, 1381 flow [2024-06-14 14:40:34,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1381, PETRI_PLACES=156, PETRI_TRANSITIONS=144} [2024-06-14 14:40:34,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 14:40:34,301 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 144 transitions, 1381 flow [2024-06-14 14:40:34,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:34,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:34,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:34,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 14:40:34,301 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:34,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -963422329, now seen corresponding path program 1 times [2024-06-14 14:40:34,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:34,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255012931] [2024-06-14 14:40:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:38,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255012931] [2024-06-14 14:40:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255012931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605008007] [2024-06-14 14:40:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:38,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:38,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 144 transitions, 1381 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:38,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:38,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:38,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:39,066 INFO L124 PetriNetUnfolderBase]: 330/637 cut-off events. [2024-06-14 14:40:39,066 INFO L125 PetriNetUnfolderBase]: For 13312/13312 co-relation queries the response was YES. [2024-06-14 14:40:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 637 events. 330/637 cut-off events. For 13312/13312 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3164 event pairs, 93 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 3722. Up to 567 conditions per place. [2024-06-14 14:40:39,071 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 134 selfloop transitions, 19 changer transitions 0/156 dead transitions. [2024-06-14 14:40:39,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 156 transitions, 1807 flow [2024-06-14 14:40:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:40:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:40:39,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:40:39,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 14:40:39,072 INFO L175 Difference]: Start difference. First operand has 156 places, 144 transitions, 1381 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:40:39,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 156 transitions, 1807 flow [2024-06-14 14:40:39,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 156 transitions, 1726 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-14 14:40:39,099 INFO L231 Difference]: Finished difference. Result has 162 places, 146 transitions, 1375 flow [2024-06-14 14:40:39,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1375, PETRI_PLACES=162, PETRI_TRANSITIONS=146} [2024-06-14 14:40:39,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-14 14:40:39,100 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 146 transitions, 1375 flow [2024-06-14 14:40:39,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:39,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:39,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 14:40:39,100 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:39,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1007099107, now seen corresponding path program 10 times [2024-06-14 14:40:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862475421] [2024-06-14 14:40:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862475421] [2024-06-14 14:40:44,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862475421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:44,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:44,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246962961] [2024-06-14 14:40:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:44,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:45,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:45,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 146 transitions, 1375 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:45,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:45,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:45,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:45,361 INFO L124 PetriNetUnfolderBase]: 342/662 cut-off events. [2024-06-14 14:40:45,361 INFO L125 PetriNetUnfolderBase]: For 15368/15368 co-relation queries the response was YES. [2024-06-14 14:40:45,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 662 events. 342/662 cut-off events. For 15368/15368 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3300 event pairs, 96 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 3959. Up to 574 conditions per place. [2024-06-14 14:40:45,365 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 22 changer transitions 0/160 dead transitions. [2024-06-14 14:40:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 160 transitions, 1891 flow [2024-06-14 14:40:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:40:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:40:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 14:40:45,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 14:40:45,366 INFO L175 Difference]: Start difference. First operand has 162 places, 146 transitions, 1375 flow. Second operand 9 states and 109 transitions. [2024-06-14 14:40:45,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 160 transitions, 1891 flow [2024-06-14 14:40:45,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 1832 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 14:40:45,393 INFO L231 Difference]: Finished difference. Result has 164 places, 151 transitions, 1488 flow [2024-06-14 14:40:45,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1488, PETRI_PLACES=164, PETRI_TRANSITIONS=151} [2024-06-14 14:40:45,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-14 14:40:45,394 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 151 transitions, 1488 flow [2024-06-14 14:40:45,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:45,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:45,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:45,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 14:40:45,394 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:45,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:45,394 INFO L85 PathProgramCache]: Analyzing trace with hash -963661587, now seen corresponding path program 11 times [2024-06-14 14:40:45,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:45,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542496445] [2024-06-14 14:40:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:45,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:51,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:51,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542496445] [2024-06-14 14:40:51,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542496445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:51,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:51,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:51,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106382268] [2024-06-14 14:40:51,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:51,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:51,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:40:51,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 151 transitions, 1488 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:40:51,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:51,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:40:51,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:51,674 INFO L124 PetriNetUnfolderBase]: 345/666 cut-off events. [2024-06-14 14:40:51,675 INFO L125 PetriNetUnfolderBase]: For 16148/16148 co-relation queries the response was YES. [2024-06-14 14:40:51,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 666 events. 345/666 cut-off events. For 16148/16148 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3341 event pairs, 65 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 4077. Up to 491 conditions per place. [2024-06-14 14:40:51,680 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 109 selfloop transitions, 59 changer transitions 0/171 dead transitions. [2024-06-14 14:40:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 171 transitions, 2116 flow [2024-06-14 14:40:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:40:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:40:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 14:40:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43548387096774194 [2024-06-14 14:40:51,681 INFO L175 Difference]: Start difference. First operand has 164 places, 151 transitions, 1488 flow. Second operand 10 states and 135 transitions. [2024-06-14 14:40:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 171 transitions, 2116 flow [2024-06-14 14:40:51,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 171 transitions, 2000 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-14 14:40:51,713 INFO L231 Difference]: Finished difference. Result has 172 places, 160 transitions, 1749 flow [2024-06-14 14:40:51,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1749, PETRI_PLACES=172, PETRI_TRANSITIONS=160} [2024-06-14 14:40:51,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 14:40:51,713 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 160 transitions, 1749 flow [2024-06-14 14:40:51,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:40:51,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:51,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:51,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 14:40:51,714 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:51,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1015379827, now seen corresponding path program 12 times [2024-06-14 14:40:51,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:51,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34758777] [2024-06-14 14:40:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:51,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:40:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:40:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:40:57,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34758777] [2024-06-14 14:40:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34758777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:40:57,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:40:57,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:40:57,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858478577] [2024-06-14 14:40:57,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:40:57,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:40:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:40:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:40:57,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:40:57,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:40:57,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 160 transitions, 1749 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:57,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:40:57,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:40:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:40:57,658 INFO L124 PetriNetUnfolderBase]: 343/663 cut-off events. [2024-06-14 14:40:57,658 INFO L125 PetriNetUnfolderBase]: For 16076/16076 co-relation queries the response was YES. [2024-06-14 14:40:57,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 663 events. 343/663 cut-off events. For 16076/16076 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3320 event pairs, 65 based on Foata normal form. 1/664 useless extension candidates. Maximal degree in co-relation 4147. Up to 489 conditions per place. [2024-06-14 14:40:57,664 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 107 selfloop transitions, 62 changer transitions 0/172 dead transitions. [2024-06-14 14:40:57,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 172 transitions, 2143 flow [2024-06-14 14:40:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:40:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:40:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 14:40:57,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 14:40:57,665 INFO L175 Difference]: Start difference. First operand has 172 places, 160 transitions, 1749 flow. Second operand 11 states and 133 transitions. [2024-06-14 14:40:57,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 172 transitions, 2143 flow [2024-06-14 14:40:57,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 172 transitions, 2002 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-14 14:40:57,702 INFO L231 Difference]: Finished difference. Result has 179 places, 161 transitions, 1763 flow [2024-06-14 14:40:57,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=179, PETRI_TRANSITIONS=161} [2024-06-14 14:40:57,702 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 14:40:57,702 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 161 transitions, 1763 flow [2024-06-14 14:40:57,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:40:57,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:40:57,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:40:57,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 14:40:57,703 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:40:57,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:40:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash -955387129, now seen corresponding path program 2 times [2024-06-14 14:40:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:40:57,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952255631] [2024-06-14 14:40:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:40:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:40:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952255631] [2024-06-14 14:41:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952255631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381748076] [2024-06-14 14:41:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:02,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:02,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 161 transitions, 1763 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:02,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:02,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:02,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:03,149 INFO L124 PetriNetUnfolderBase]: 340/656 cut-off events. [2024-06-14 14:41:03,149 INFO L125 PetriNetUnfolderBase]: For 15569/15569 co-relation queries the response was YES. [2024-06-14 14:41:03,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4175 conditions, 656 events. 340/656 cut-off events. For 15569/15569 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3285 event pairs, 93 based on Foata normal form. 1/657 useless extension candidates. Maximal degree in co-relation 4090. Up to 591 conditions per place. [2024-06-14 14:41:03,154 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 15 changer transitions 0/169 dead transitions. [2024-06-14 14:41:03,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 169 transitions, 2113 flow [2024-06-14 14:41:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:41:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:41:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-14 14:41:03,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-14 14:41:03,155 INFO L175 Difference]: Start difference. First operand has 179 places, 161 transitions, 1763 flow. Second operand 9 states and 104 transitions. [2024-06-14 14:41:03,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 169 transitions, 2113 flow [2024-06-14 14:41:03,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 169 transitions, 1992 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 14:41:03,193 INFO L231 Difference]: Finished difference. Result has 181 places, 161 transitions, 1677 flow [2024-06-14 14:41:03,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1677, PETRI_PLACES=181, PETRI_TRANSITIONS=161} [2024-06-14 14:41:03,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-14 14:41:03,193 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 161 transitions, 1677 flow [2024-06-14 14:41:03,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:03,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:03,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:03,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 14:41:03,194 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:03,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash -681767693, now seen corresponding path program 1 times [2024-06-14 14:41:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152995786] [2024-06-14 14:41:03,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:03,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:09,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:09,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152995786] [2024-06-14 14:41:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152995786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:09,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940625764] [2024-06-14 14:41:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:09,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:09,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:09,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:41:09,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 161 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:41:09,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:09,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:41:09,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:09,662 INFO L124 PetriNetUnfolderBase]: 344/665 cut-off events. [2024-06-14 14:41:09,662 INFO L125 PetriNetUnfolderBase]: For 16961/16961 co-relation queries the response was YES. [2024-06-14 14:41:09,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4126 conditions, 665 events. 344/665 cut-off events. For 16961/16961 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3324 event pairs, 29 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4040. Up to 490 conditions per place. [2024-06-14 14:41:09,667 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 150 selfloop transitions, 24 changer transitions 0/177 dead transitions. [2024-06-14 14:41:09,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 177 transitions, 2075 flow [2024-06-14 14:41:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:41:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:41:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 14:41:09,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 14:41:09,668 INFO L175 Difference]: Start difference. First operand has 181 places, 161 transitions, 1677 flow. Second operand 9 states and 118 transitions. [2024-06-14 14:41:09,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 177 transitions, 2075 flow [2024-06-14 14:41:09,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 177 transitions, 2038 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 14:41:09,708 INFO L231 Difference]: Finished difference. Result has 182 places, 162 transitions, 1711 flow [2024-06-14 14:41:09,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1711, PETRI_PLACES=182, PETRI_TRANSITIONS=162} [2024-06-14 14:41:09,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-14 14:41:09,709 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 162 transitions, 1711 flow [2024-06-14 14:41:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:41:09,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:09,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:09,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 14:41:09,710 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:09,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash -568177493, now seen corresponding path program 2 times [2024-06-14 14:41:09,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:09,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271366347] [2024-06-14 14:41:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:09,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:14,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:14,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271366347] [2024-06-14 14:41:14,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271366347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:14,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:14,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:14,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750459050] [2024-06-14 14:41:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:14,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:14,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:14,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 162 transitions, 1711 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:14,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:14,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:14,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:14,680 INFO L124 PetriNetUnfolderBase]: 348/673 cut-off events. [2024-06-14 14:41:14,680 INFO L125 PetriNetUnfolderBase]: For 17675/17675 co-relation queries the response was YES. [2024-06-14 14:41:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 673 events. 348/673 cut-off events. For 17675/17675 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3388 event pairs, 55 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 4153. Up to 578 conditions per place. [2024-06-14 14:41:14,685 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 20 changer transitions 0/179 dead transitions. [2024-06-14 14:41:14,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 179 transitions, 2119 flow [2024-06-14 14:41:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:41:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:41:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 14:41:14,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 14:41:14,686 INFO L175 Difference]: Start difference. First operand has 182 places, 162 transitions, 1711 flow. Second operand 10 states and 121 transitions. [2024-06-14 14:41:14,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 179 transitions, 2119 flow [2024-06-14 14:41:14,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 179 transitions, 2064 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 14:41:14,725 INFO L231 Difference]: Finished difference. Result has 185 places, 163 transitions, 1718 flow [2024-06-14 14:41:14,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=185, PETRI_TRANSITIONS=163} [2024-06-14 14:41:14,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-14 14:41:14,726 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 163 transitions, 1718 flow [2024-06-14 14:41:14,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:14,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:14,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:14,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 14:41:14,726 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:14,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:14,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1690798079, now seen corresponding path program 3 times [2024-06-14 14:41:14,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:14,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074097476] [2024-06-14 14:41:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:14,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:19,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074097476] [2024-06-14 14:41:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074097476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:19,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043293451] [2024-06-14 14:41:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:19,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:19,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:19,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:41:19,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 163 transitions, 1718 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:41:19,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:19,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:41:19,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:20,033 INFO L124 PetriNetUnfolderBase]: 352/681 cut-off events. [2024-06-14 14:41:20,035 INFO L125 PetriNetUnfolderBase]: For 18841/18841 co-relation queries the response was YES. [2024-06-14 14:41:20,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 681 events. 352/681 cut-off events. For 18841/18841 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3461 event pairs, 59 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4198. Up to 575 conditions per place. [2024-06-14 14:41:20,041 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 146 selfloop transitions, 28 changer transitions 0/177 dead transitions. [2024-06-14 14:41:20,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 177 transitions, 2116 flow [2024-06-14 14:41:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:41:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:41:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 14:41:20,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2024-06-14 14:41:20,044 INFO L175 Difference]: Start difference. First operand has 185 places, 163 transitions, 1718 flow. Second operand 9 states and 119 transitions. [2024-06-14 14:41:20,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 177 transitions, 2116 flow [2024-06-14 14:41:20,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 177 transitions, 2064 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 14:41:20,085 INFO L231 Difference]: Finished difference. Result has 186 places, 164 transitions, 1748 flow [2024-06-14 14:41:20,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1748, PETRI_PLACES=186, PETRI_TRANSITIONS=164} [2024-06-14 14:41:20,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-14 14:41:20,086 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 164 transitions, 1748 flow [2024-06-14 14:41:20,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:41:20,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:20,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:20,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 14:41:20,087 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:20,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:20,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2068616001, now seen corresponding path program 4 times [2024-06-14 14:41:20,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:20,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115659996] [2024-06-14 14:41:20,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:20,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115659996] [2024-06-14 14:41:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115659996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101863748] [2024-06-14 14:41:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:24,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:25,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:25,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 164 transitions, 1748 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:25,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:25,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:25,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:25,353 INFO L124 PetriNetUnfolderBase]: 356/689 cut-off events. [2024-06-14 14:41:25,353 INFO L125 PetriNetUnfolderBase]: For 19763/19763 co-relation queries the response was YES. [2024-06-14 14:41:25,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 689 events. 356/689 cut-off events. For 19763/19763 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3530 event pairs, 66 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4269. Up to 605 conditions per place. [2024-06-14 14:41:25,358 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 161 selfloop transitions, 16 changer transitions 0/180 dead transitions. [2024-06-14 14:41:25,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 180 transitions, 2160 flow [2024-06-14 14:41:25,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:41:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:41:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 14:41:25,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 14:41:25,360 INFO L175 Difference]: Start difference. First operand has 186 places, 164 transitions, 1748 flow. Second operand 10 states and 119 transitions. [2024-06-14 14:41:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 180 transitions, 2160 flow [2024-06-14 14:41:25,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 180 transitions, 2092 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 14:41:25,402 INFO L231 Difference]: Finished difference. Result has 189 places, 165 transitions, 1738 flow [2024-06-14 14:41:25,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1738, PETRI_PLACES=189, PETRI_TRANSITIONS=165} [2024-06-14 14:41:25,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-14 14:41:25,403 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 165 transitions, 1738 flow [2024-06-14 14:41:25,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:25,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:25,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:25,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 14:41:25,403 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:25,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -291862919, now seen corresponding path program 5 times [2024-06-14 14:41:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719625744] [2024-06-14 14:41:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:32,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719625744] [2024-06-14 14:41:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719625744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:32,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:32,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:32,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059211847] [2024-06-14 14:41:32,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:32,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:32,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:32,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:32,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 165 transitions, 1738 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:32,849 INFO L124 PetriNetUnfolderBase]: 360/697 cut-off events. [2024-06-14 14:41:32,850 INFO L125 PetriNetUnfolderBase]: For 20646/20646 co-relation queries the response was YES. [2024-06-14 14:41:32,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4390 conditions, 697 events. 360/697 cut-off events. For 20646/20646 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3587 event pairs, 68 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4300. Up to 608 conditions per place. [2024-06-14 14:41:32,855 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 21 changer transitions 0/180 dead transitions. [2024-06-14 14:41:32,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 180 transitions, 2148 flow [2024-06-14 14:41:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:41:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:41:32,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 14:41:32,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 14:41:32,856 INFO L175 Difference]: Start difference. First operand has 189 places, 165 transitions, 1738 flow. Second operand 11 states and 130 transitions. [2024-06-14 14:41:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 180 transitions, 2148 flow [2024-06-14 14:41:32,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 180 transitions, 2100 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 14:41:32,900 INFO L231 Difference]: Finished difference. Result has 192 places, 166 transitions, 1762 flow [2024-06-14 14:41:32,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1762, PETRI_PLACES=192, PETRI_TRANSITIONS=166} [2024-06-14 14:41:32,900 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-14 14:41:32,901 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 166 transitions, 1762 flow [2024-06-14 14:41:32,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:32,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:32,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:32,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 14:41:32,901 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:32,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash -297225299, now seen corresponding path program 6 times [2024-06-14 14:41:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483147681] [2024-06-14 14:41:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:38,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:38,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483147681] [2024-06-14 14:41:38,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483147681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:38,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:38,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:38,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258110861] [2024-06-14 14:41:38,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:38,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:38,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:38,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:38,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:38,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:38,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 166 transitions, 1762 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:38,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:38,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:38,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:38,577 INFO L124 PetriNetUnfolderBase]: 364/705 cut-off events. [2024-06-14 14:41:38,577 INFO L125 PetriNetUnfolderBase]: For 21431/21431 co-relation queries the response was YES. [2024-06-14 14:41:38,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 705 events. 364/705 cut-off events. For 21431/21431 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3644 event pairs, 70 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 4371. Up to 628 conditions per place. [2024-06-14 14:41:38,583 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 161 selfloop transitions, 17 changer transitions 0/181 dead transitions. [2024-06-14 14:41:38,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 181 transitions, 2188 flow [2024-06-14 14:41:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:41:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:41:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 14:41:38,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 14:41:38,587 INFO L175 Difference]: Start difference. First operand has 192 places, 166 transitions, 1762 flow. Second operand 10 states and 118 transitions. [2024-06-14 14:41:38,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 181 transitions, 2188 flow [2024-06-14 14:41:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 181 transitions, 2128 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 14:41:38,636 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 1785 flow [2024-06-14 14:41:38,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1785, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-06-14 14:41:38,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-14 14:41:38,637 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 1785 flow [2024-06-14 14:41:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:38,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:38,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:38,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 14:41:38,637 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:38,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash -297373169, now seen corresponding path program 7 times [2024-06-14 14:41:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:38,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702029890] [2024-06-14 14:41:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:44,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:44,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702029890] [2024-06-14 14:41:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702029890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:41:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44311030] [2024-06-14 14:41:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:41:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:41:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:41:44,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 1785 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:44,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:44,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:44,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:44,509 INFO L124 PetriNetUnfolderBase]: 368/713 cut-off events. [2024-06-14 14:41:44,509 INFO L125 PetriNetUnfolderBase]: For 22341/22341 co-relation queries the response was YES. [2024-06-14 14:41:44,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 713 events. 368/713 cut-off events. For 22341/22341 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3691 event pairs, 70 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4421. Up to 631 conditions per place. [2024-06-14 14:41:44,515 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 164 selfloop transitions, 16 changer transitions 0/183 dead transitions. [2024-06-14 14:41:44,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 183 transitions, 2205 flow [2024-06-14 14:41:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:41:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:41:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 14:41:44,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 14:41:44,517 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 1785 flow. Second operand 10 states and 118 transitions. [2024-06-14 14:41:44,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 183 transitions, 2205 flow [2024-06-14 14:41:44,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 183 transitions, 2154 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 14:41:44,565 INFO L231 Difference]: Finished difference. Result has 197 places, 169 transitions, 1798 flow [2024-06-14 14:41:44,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1798, PETRI_PLACES=197, PETRI_TRANSITIONS=169} [2024-06-14 14:41:44,566 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 14:41:44,566 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 169 transitions, 1798 flow [2024-06-14 14:41:44,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:41:44,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:44,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 14:41:44,567 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:44,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash -291647438, now seen corresponding path program 1 times [2024-06-14 14:41:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:44,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284485878] [2024-06-14 14:41:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:50,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:50,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284485878] [2024-06-14 14:41:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284485878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:50,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:41:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917258769] [2024-06-14 14:41:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:41:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:41:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:41:50,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:50,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 169 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:41:50,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:50,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:50,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:50,800 INFO L124 PetriNetUnfolderBase]: 394/767 cut-off events. [2024-06-14 14:41:50,801 INFO L125 PetriNetUnfolderBase]: For 33332/33332 co-relation queries the response was YES. [2024-06-14 14:41:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 767 events. 394/767 cut-off events. For 33332/33332 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4050 event pairs, 76 based on Foata normal form. 12/779 useless extension candidates. Maximal degree in co-relation 4723. Up to 633 conditions per place. [2024-06-14 14:41:50,806 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 21 changer transitions 7/191 dead transitions. [2024-06-14 14:41:50,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 191 transitions, 2337 flow [2024-06-14 14:41:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:41:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:41:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 14:41:50,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-14 14:41:50,807 INFO L175 Difference]: Start difference. First operand has 197 places, 169 transitions, 1798 flow. Second operand 11 states and 136 transitions. [2024-06-14 14:41:50,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 191 transitions, 2337 flow [2024-06-14 14:41:50,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 191 transitions, 2283 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 14:41:50,861 INFO L231 Difference]: Finished difference. Result has 201 places, 170 transitions, 1814 flow [2024-06-14 14:41:50,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1814, PETRI_PLACES=201, PETRI_TRANSITIONS=170} [2024-06-14 14:41:50,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 14:41:50,861 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 170 transitions, 1814 flow [2024-06-14 14:41:50,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:41:50,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:50,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:50,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 14:41:50,862 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:50,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1656601909, now seen corresponding path program 1 times [2024-06-14 14:41:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:50,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583245667] [2024-06-14 14:41:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:50,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:41:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:41:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:41:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583245667] [2024-06-14 14:41:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583245667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:41:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:41:56,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:41:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13314189] [2024-06-14 14:41:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:41:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:41:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:41:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:41:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:41:56,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:41:56,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 170 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:41:56,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:41:56,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:41:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:41:56,753 INFO L124 PetriNetUnfolderBase]: 373/723 cut-off events. [2024-06-14 14:41:56,753 INFO L125 PetriNetUnfolderBase]: For 23238/23238 co-relation queries the response was YES. [2024-06-14 14:41:56,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 723 events. 373/723 cut-off events. For 23238/23238 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3758 event pairs, 46 based on Foata normal form. 1/724 useless extension candidates. Maximal degree in co-relation 4494. Up to 601 conditions per place. [2024-06-14 14:41:56,759 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 144 selfloop transitions, 41 changer transitions 0/188 dead transitions. [2024-06-14 14:41:56,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 188 transitions, 2298 flow [2024-06-14 14:41:56,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:41:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:41:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 14:41:56,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 14:41:56,760 INFO L175 Difference]: Start difference. First operand has 201 places, 170 transitions, 1814 flow. Second operand 11 states and 133 transitions. [2024-06-14 14:41:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 188 transitions, 2298 flow [2024-06-14 14:41:56,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 188 transitions, 2239 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 14:41:56,819 INFO L231 Difference]: Finished difference. Result has 205 places, 175 transitions, 1945 flow [2024-06-14 14:41:56,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1945, PETRI_PLACES=205, PETRI_TRANSITIONS=175} [2024-06-14 14:41:56,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 14:41:56,820 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 175 transitions, 1945 flow [2024-06-14 14:41:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:41:56,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:41:56,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:41:56,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 14:41:56,820 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:41:56,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:41:56,821 INFO L85 PathProgramCache]: Analyzing trace with hash 835380139, now seen corresponding path program 2 times [2024-06-14 14:41:56,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:41:56,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835462367] [2024-06-14 14:41:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:41:56,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:41:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:02,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:02,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835462367] [2024-06-14 14:42:02,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835462367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:02,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:02,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:02,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462171939] [2024-06-14 14:42:02,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:02,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:02,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:02,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:02,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:02,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:02,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 175 transitions, 1945 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:02,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:02,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:02,762 INFO L124 PetriNetUnfolderBase]: 379/736 cut-off events. [2024-06-14 14:42:02,762 INFO L125 PetriNetUnfolderBase]: For 24342/24342 co-relation queries the response was YES. [2024-06-14 14:42:02,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 736 events. 379/736 cut-off events. For 24342/24342 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3857 event pairs, 72 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 4631. Up to 636 conditions per place. [2024-06-14 14:42:02,768 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 28 changer transitions 0/191 dead transitions. [2024-06-14 14:42:02,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 191 transitions, 2415 flow [2024-06-14 14:42:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:42:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:42:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 14:42:02,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:42:02,770 INFO L175 Difference]: Start difference. First operand has 205 places, 175 transitions, 1945 flow. Second operand 10 states and 125 transitions. [2024-06-14 14:42:02,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 191 transitions, 2415 flow [2024-06-14 14:42:02,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 191 transitions, 2301 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 14:42:02,828 INFO L231 Difference]: Finished difference. Result has 208 places, 179 transitions, 1975 flow [2024-06-14 14:42:02,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1975, PETRI_PLACES=208, PETRI_TRANSITIONS=179} [2024-06-14 14:42:02,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 14:42:02,829 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 179 transitions, 1975 flow [2024-06-14 14:42:02,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:02,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:02,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:02,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 14:42:02,829 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:02,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash -273787953, now seen corresponding path program 8 times [2024-06-14 14:42:02,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:02,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373665351] [2024-06-14 14:42:02,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:08,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373665351] [2024-06-14 14:42:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373665351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201652132] [2024-06-14 14:42:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:08,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:08,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:08,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 179 transitions, 1975 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:08,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:08,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:08,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:08,912 INFO L124 PetriNetUnfolderBase]: 383/744 cut-off events. [2024-06-14 14:42:08,913 INFO L125 PetriNetUnfolderBase]: For 26499/26499 co-relation queries the response was YES. [2024-06-14 14:42:08,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 744 events. 383/744 cut-off events. For 26499/26499 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3921 event pairs, 57 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4666. Up to 613 conditions per place. [2024-06-14 14:42:08,918 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 164 selfloop transitions, 27 changer transitions 0/194 dead transitions. [2024-06-14 14:42:08,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 194 transitions, 2419 flow [2024-06-14 14:42:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 14:42:08,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-14 14:42:08,919 INFO L175 Difference]: Start difference. First operand has 208 places, 179 transitions, 1975 flow. Second operand 9 states and 110 transitions. [2024-06-14 14:42:08,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 194 transitions, 2419 flow [2024-06-14 14:42:08,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 194 transitions, 2339 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 14:42:08,985 INFO L231 Difference]: Finished difference. Result has 210 places, 180 transitions, 1987 flow [2024-06-14 14:42:08,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1987, PETRI_PLACES=210, PETRI_TRANSITIONS=180} [2024-06-14 14:42:08,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 14:42:08,986 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 180 transitions, 1987 flow [2024-06-14 14:42:08,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:08,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:08,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:08,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 14:42:08,986 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:08,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash -994581109, now seen corresponding path program 9 times [2024-06-14 14:42:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915755454] [2024-06-14 14:42:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:08,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:14,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:14,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915755454] [2024-06-14 14:42:14,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915755454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:14,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177840610] [2024-06-14 14:42:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:14,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:14,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:14,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:14,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:14,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 180 transitions, 1987 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:14,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:14,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:14,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:15,305 INFO L124 PetriNetUnfolderBase]: 387/752 cut-off events. [2024-06-14 14:42:15,306 INFO L125 PetriNetUnfolderBase]: For 27635/27635 co-relation queries the response was YES. [2024-06-14 14:42:15,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 752 events. 387/752 cut-off events. For 27635/27635 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3979 event pairs, 74 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 4760. Up to 658 conditions per place. [2024-06-14 14:42:15,312 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 168 selfloop transitions, 22 changer transitions 0/193 dead transitions. [2024-06-14 14:42:15,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 193 transitions, 2433 flow [2024-06-14 14:42:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 14:42:15,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 14:42:15,313 INFO L175 Difference]: Start difference. First operand has 210 places, 180 transitions, 1987 flow. Second operand 9 states and 107 transitions. [2024-06-14 14:42:15,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 193 transitions, 2433 flow [2024-06-14 14:42:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 193 transitions, 2351 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 14:42:15,377 INFO L231 Difference]: Finished difference. Result has 213 places, 182 transitions, 2004 flow [2024-06-14 14:42:15,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2004, PETRI_PLACES=213, PETRI_TRANSITIONS=182} [2024-06-14 14:42:15,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 14:42:15,377 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 182 transitions, 2004 flow [2024-06-14 14:42:15,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:15,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:15,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 14:42:15,378 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:15,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1627028931, now seen corresponding path program 10 times [2024-06-14 14:42:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:15,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486305009] [2024-06-14 14:42:15,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:15,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:19,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486305009] [2024-06-14 14:42:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486305009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:19,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209476003] [2024-06-14 14:42:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:19,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:19,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 182 transitions, 2004 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:19,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:19,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:19,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:20,041 INFO L124 PetriNetUnfolderBase]: 391/760 cut-off events. [2024-06-14 14:42:20,041 INFO L125 PetriNetUnfolderBase]: For 26600/26600 co-relation queries the response was YES. [2024-06-14 14:42:20,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 760 events. 391/760 cut-off events. For 26600/26600 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4031 event pairs, 70 based on Foata normal form. 2/762 useless extension candidates. Maximal degree in co-relation 4757. Up to 656 conditions per place. [2024-06-14 14:42:20,047 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 171 selfloop transitions, 21 changer transitions 0/195 dead transitions. [2024-06-14 14:42:20,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 195 transitions, 2444 flow [2024-06-14 14:42:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 14:42:20,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 14:42:20,048 INFO L175 Difference]: Start difference. First operand has 213 places, 182 transitions, 2004 flow. Second operand 9 states and 107 transitions. [2024-06-14 14:42:20,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 195 transitions, 2444 flow [2024-06-14 14:42:20,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 195 transitions, 2381 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 14:42:20,118 INFO L231 Difference]: Finished difference. Result has 216 places, 183 transitions, 2019 flow [2024-06-14 14:42:20,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2019, PETRI_PLACES=216, PETRI_TRANSITIONS=183} [2024-06-14 14:42:20,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-14 14:42:20,118 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 183 transitions, 2019 flow [2024-06-14 14:42:20,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:20,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:20,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 14:42:20,119 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:20,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -989218729, now seen corresponding path program 11 times [2024-06-14 14:42:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715576806] [2024-06-14 14:42:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:26,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715576806] [2024-06-14 14:42:26,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715576806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:26,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:26,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162463295] [2024-06-14 14:42:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:26,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:26,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:26,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:42:26,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 183 transitions, 2019 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:42:26,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:26,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:42:26,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:26,891 INFO L124 PetriNetUnfolderBase]: 395/768 cut-off events. [2024-06-14 14:42:26,891 INFO L125 PetriNetUnfolderBase]: For 26662/26662 co-relation queries the response was YES. [2024-06-14 14:42:26,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4898 conditions, 768 events. 395/768 cut-off events. For 26662/26662 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4082 event pairs, 74 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 4795. Up to 662 conditions per place. [2024-06-14 14:42:26,897 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 164 selfloop transitions, 28 changer transitions 0/195 dead transitions. [2024-06-14 14:42:26,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 195 transitions, 2457 flow [2024-06-14 14:42:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 14:42:26,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229390681003584 [2024-06-14 14:42:26,899 INFO L175 Difference]: Start difference. First operand has 216 places, 183 transitions, 2019 flow. Second operand 9 states and 118 transitions. [2024-06-14 14:42:26,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 195 transitions, 2457 flow [2024-06-14 14:42:26,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 195 transitions, 2391 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 14:42:26,964 INFO L231 Difference]: Finished difference. Result has 218 places, 184 transitions, 2045 flow [2024-06-14 14:42:26,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2045, PETRI_PLACES=218, PETRI_TRANSITIONS=184} [2024-06-14 14:42:26,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-14 14:42:26,964 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 184 transitions, 2045 flow [2024-06-14 14:42:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 14:42:26,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:26,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 14:42:26,965 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:26,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1471271901, now seen corresponding path program 3 times [2024-06-14 14:42:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:26,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748451626] [2024-06-14 14:42:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:26,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748451626] [2024-06-14 14:42:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748451626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:33,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:42:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531575595] [2024-06-14 14:42:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:42:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:33,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:42:33,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:42:33,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:33,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 184 transitions, 2045 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:33,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:33,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:33,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:33,972 INFO L124 PetriNetUnfolderBase]: 398/773 cut-off events. [2024-06-14 14:42:33,972 INFO L125 PetriNetUnfolderBase]: For 25500/25500 co-relation queries the response was YES. [2024-06-14 14:42:33,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 773 events. 398/773 cut-off events. For 25500/25500 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4095 event pairs, 74 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 4831. Up to 630 conditions per place. [2024-06-14 14:42:33,979 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 50 changer transitions 0/198 dead transitions. [2024-06-14 14:42:33,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 198 transitions, 2613 flow [2024-06-14 14:42:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:42:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:42:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:42:33,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 14:42:33,981 INFO L175 Difference]: Start difference. First operand has 218 places, 184 transitions, 2045 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:42:33,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 198 transitions, 2613 flow [2024-06-14 14:42:34,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 198 transitions, 2539 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-14 14:42:34,050 INFO L231 Difference]: Finished difference. Result has 221 places, 186 transitions, 2133 flow [2024-06-14 14:42:34,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2133, PETRI_PLACES=221, PETRI_TRANSITIONS=186} [2024-06-14 14:42:34,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-14 14:42:34,051 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 186 transitions, 2133 flow [2024-06-14 14:42:34,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:34,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:34,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:34,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 14:42:34,051 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:34,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1632746943, now seen corresponding path program 4 times [2024-06-14 14:42:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:34,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305592710] [2024-06-14 14:42:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:34,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:39,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:39,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305592710] [2024-06-14 14:42:39,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305592710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:39,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:39,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:42:39,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975958508] [2024-06-14 14:42:39,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:39,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:42:39,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:39,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:42:39,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:42:39,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:39,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 186 transitions, 2133 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:39,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:39,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:39,683 INFO L124 PetriNetUnfolderBase]: 396/770 cut-off events. [2024-06-14 14:42:39,683 INFO L125 PetriNetUnfolderBase]: For 25030/25030 co-relation queries the response was YES. [2024-06-14 14:42:39,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4887 conditions, 770 events. 396/770 cut-off events. For 25030/25030 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4101 event pairs, 74 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 4782. Up to 649 conditions per place. [2024-06-14 14:42:39,689 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 154 selfloop transitions, 41 changer transitions 0/198 dead transitions. [2024-06-14 14:42:39,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 198 transitions, 2564 flow [2024-06-14 14:42:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:42:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:42:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 14:42:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:42:39,690 INFO L175 Difference]: Start difference. First operand has 221 places, 186 transitions, 2133 flow. Second operand 10 states and 120 transitions. [2024-06-14 14:42:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 198 transitions, 2564 flow [2024-06-14 14:42:39,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 198 transitions, 2390 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-14 14:42:39,757 INFO L231 Difference]: Finished difference. Result has 224 places, 187 transitions, 2080 flow [2024-06-14 14:42:39,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=224, PETRI_TRANSITIONS=187} [2024-06-14 14:42:39,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-14 14:42:39,758 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 187 transitions, 2080 flow [2024-06-14 14:42:39,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:39,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:39,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:39,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 14:42:39,758 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:39,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:39,759 INFO L85 PathProgramCache]: Analyzing trace with hash -989003248, now seen corresponding path program 2 times [2024-06-14 14:42:39,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:39,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479261182] [2024-06-14 14:42:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:39,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:44,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:44,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479261182] [2024-06-14 14:42:44,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479261182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:44,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:42:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512177762] [2024-06-14 14:42:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:44,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:42:44,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:42:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:42:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:44,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 187 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:44,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:44,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:44,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:45,359 INFO L124 PetriNetUnfolderBase]: 412/806 cut-off events. [2024-06-14 14:42:45,359 INFO L125 PetriNetUnfolderBase]: For 36464/36464 co-relation queries the response was YES. [2024-06-14 14:42:45,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5060 conditions, 806 events. 412/806 cut-off events. For 36464/36464 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4334 event pairs, 78 based on Foata normal form. 10/816 useless extension candidates. Maximal degree in co-relation 4953. Up to 656 conditions per place. [2024-06-14 14:42:45,366 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 33 changer transitions 4/203 dead transitions. [2024-06-14 14:42:45,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 203 transitions, 2588 flow [2024-06-14 14:42:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:42:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:42:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:42:45,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 14:42:45,367 INFO L175 Difference]: Start difference. First operand has 224 places, 187 transitions, 2080 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:42:45,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 203 transitions, 2588 flow [2024-06-14 14:42:45,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 203 transitions, 2444 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:42:45,442 INFO L231 Difference]: Finished difference. Result has 225 places, 187 transitions, 2022 flow [2024-06-14 14:42:45,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2022, PETRI_PLACES=225, PETRI_TRANSITIONS=187} [2024-06-14 14:42:45,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-14 14:42:45,442 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 187 transitions, 2022 flow [2024-06-14 14:42:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:42:45,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:45,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:45,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 14:42:45,443 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:45,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2040929599, now seen corresponding path program 12 times [2024-06-14 14:42:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010077591] [2024-06-14 14:42:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:50,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:50,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010077591] [2024-06-14 14:42:50,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010077591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:50,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639988678] [2024-06-14 14:42:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:50,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:50,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:50,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:50,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:50,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:42:50,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 187 transitions, 2022 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:50,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:50,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:42:50,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:50,960 INFO L124 PetriNetUnfolderBase]: 410/804 cut-off events. [2024-06-14 14:42:50,961 INFO L125 PetriNetUnfolderBase]: For 27453/27453 co-relation queries the response was YES. [2024-06-14 14:42:50,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5031 conditions, 804 events. 410/804 cut-off events. For 27453/27453 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4340 event pairs, 83 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4923. Up to 710 conditions per place. [2024-06-14 14:42:50,966 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 173 selfloop transitions, 22 changer transitions 0/198 dead transitions. [2024-06-14 14:42:50,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 198 transitions, 2472 flow [2024-06-14 14:42:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 14:42:50,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 14:42:50,967 INFO L175 Difference]: Start difference. First operand has 225 places, 187 transitions, 2022 flow. Second operand 9 states and 107 transitions. [2024-06-14 14:42:50,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 198 transitions, 2472 flow [2024-06-14 14:42:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 198 transitions, 2366 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 14:42:51,034 INFO L231 Difference]: Finished difference. Result has 226 places, 189 transitions, 2011 flow [2024-06-14 14:42:51,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2011, PETRI_PLACES=226, PETRI_TRANSITIONS=189} [2024-06-14 14:42:51,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-14 14:42:51,035 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 189 transitions, 2011 flow [2024-06-14 14:42:51,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:51,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:51,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:51,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 14:42:51,035 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:51,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:51,036 INFO L85 PathProgramCache]: Analyzing trace with hash 107480223, now seen corresponding path program 13 times [2024-06-14 14:42:51,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:51,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702992469] [2024-06-14 14:42:51,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:51,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:42:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:42:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:42:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702992469] [2024-06-14 14:42:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702992469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:42:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:42:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:42:56,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871194666] [2024-06-14 14:42:56,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:42:56,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:42:56,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:42:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:42:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:42:56,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 14:42:56,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 189 transitions, 2011 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:56,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:42:56,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 14:42:56,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:42:57,212 INFO L124 PetriNetUnfolderBase]: 414/812 cut-off events. [2024-06-14 14:42:57,213 INFO L125 PetriNetUnfolderBase]: For 27686/27686 co-relation queries the response was YES. [2024-06-14 14:42:57,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5039 conditions, 812 events. 414/812 cut-off events. For 27686/27686 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4411 event pairs, 81 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4930. Up to 713 conditions per place. [2024-06-14 14:42:57,220 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 176 selfloop transitions, 21 changer transitions 0/200 dead transitions. [2024-06-14 14:42:57,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 200 transitions, 2457 flow [2024-06-14 14:42:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:42:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:42:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 14:42:57,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 14:42:57,221 INFO L175 Difference]: Start difference. First operand has 226 places, 189 transitions, 2011 flow. Second operand 9 states and 98 transitions. [2024-06-14 14:42:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 200 transitions, 2457 flow [2024-06-14 14:42:57,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 200 transitions, 2392 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 14:42:57,298 INFO L231 Difference]: Finished difference. Result has 229 places, 190 transitions, 2024 flow [2024-06-14 14:42:57,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2024, PETRI_PLACES=229, PETRI_TRANSITIONS=190} [2024-06-14 14:42:57,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-14 14:42:57,298 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 190 transitions, 2024 flow [2024-06-14 14:42:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:42:57,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:42:57,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:42:57,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 14:42:57,299 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:42:57,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:42:57,299 INFO L85 PathProgramCache]: Analyzing trace with hash 191055161, now seen corresponding path program 14 times [2024-06-14 14:42:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:42:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200149950] [2024-06-14 14:42:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:42:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:42:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:03,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:03,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200149950] [2024-06-14 14:43:03,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200149950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:03,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:43:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256540712] [2024-06-14 14:43:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:43:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:43:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:43:03,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:03,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 190 transitions, 2024 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:03,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:03,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:03,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:03,664 INFO L124 PetriNetUnfolderBase]: 418/820 cut-off events. [2024-06-14 14:43:03,664 INFO L125 PetriNetUnfolderBase]: For 28827/28827 co-relation queries the response was YES. [2024-06-14 14:43:03,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 820 events. 418/820 cut-off events. For 28827/28827 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4455 event pairs, 83 based on Foata normal form. 2/822 useless extension candidates. Maximal degree in co-relation 4985. Up to 693 conditions per place. [2024-06-14 14:43:03,671 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 159 selfloop transitions, 38 changer transitions 0/200 dead transitions. [2024-06-14 14:43:03,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 200 transitions, 2470 flow [2024-06-14 14:43:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:43:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:43:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 14:43:03,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 14:43:03,672 INFO L175 Difference]: Start difference. First operand has 229 places, 190 transitions, 2024 flow. Second operand 9 states and 109 transitions. [2024-06-14 14:43:03,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 200 transitions, 2470 flow [2024-06-14 14:43:03,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 200 transitions, 2402 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 14:43:03,750 INFO L231 Difference]: Finished difference. Result has 231 places, 191 transitions, 2070 flow [2024-06-14 14:43:03,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2070, PETRI_PLACES=231, PETRI_TRANSITIONS=191} [2024-06-14 14:43:03,751 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-14 14:43:03,751 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 2070 flow [2024-06-14 14:43:03,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:03,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:03,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:03,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 14:43:03,752 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:03,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:03,752 INFO L85 PathProgramCache]: Analyzing trace with hash 112990473, now seen corresponding path program 15 times [2024-06-14 14:43:03,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280059949] [2024-06-14 14:43:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:03,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:10,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:10,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280059949] [2024-06-14 14:43:10,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280059949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:10,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:10,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:43:10,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363240401] [2024-06-14 14:43:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:10,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:43:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:43:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:43:10,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:10,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 191 transitions, 2070 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:10,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:10,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:10,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:11,343 INFO L124 PetriNetUnfolderBase]: 415/815 cut-off events. [2024-06-14 14:43:11,343 INFO L125 PetriNetUnfolderBase]: For 26844/26844 co-relation queries the response was YES. [2024-06-14 14:43:11,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4957 conditions, 815 events. 415/815 cut-off events. For 26844/26844 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4413 event pairs, 82 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 4846. Up to 715 conditions per place. [2024-06-14 14:43:11,349 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 172 selfloop transitions, 25 changer transitions 0/200 dead transitions. [2024-06-14 14:43:11,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 200 transitions, 2484 flow [2024-06-14 14:43:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:43:11,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:43:11,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 14:43:11,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 14:43:11,350 INFO L175 Difference]: Start difference. First operand has 231 places, 191 transitions, 2070 flow. Second operand 9 states and 109 transitions. [2024-06-14 14:43:11,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 200 transitions, 2484 flow [2024-06-14 14:43:11,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 200 transitions, 2370 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 14:43:11,458 INFO L231 Difference]: Finished difference. Result has 232 places, 191 transitions, 2010 flow [2024-06-14 14:43:11,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2010, PETRI_PLACES=232, PETRI_TRANSITIONS=191} [2024-06-14 14:43:11,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-14 14:43:11,459 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 191 transitions, 2010 flow [2024-06-14 14:43:11,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:11,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:11,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:11,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 14:43:11,459 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:11,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash 113198235, now seen corresponding path program 5 times [2024-06-14 14:43:11,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:11,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905695089] [2024-06-14 14:43:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:11,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905695089] [2024-06-14 14:43:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905695089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:16,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993191369] [2024-06-14 14:43:16,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:16,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:16,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 191 transitions, 2010 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:16,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:16,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:16,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:16,889 INFO L124 PetriNetUnfolderBase]: 418/820 cut-off events. [2024-06-14 14:43:16,889 INFO L125 PetriNetUnfolderBase]: For 25982/25982 co-relation queries the response was YES. [2024-06-14 14:43:16,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4932 conditions, 820 events. 418/820 cut-off events. For 25982/25982 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4458 event pairs, 82 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 4821. Up to 698 conditions per place. [2024-06-14 14:43:16,895 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 37 changer transitions 0/203 dead transitions. [2024-06-14 14:43:16,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 203 transitions, 2582 flow [2024-06-14 14:43:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:43:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:43:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 14:43:16,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 14:43:16,897 INFO L175 Difference]: Start difference. First operand has 232 places, 191 transitions, 2010 flow. Second operand 10 states and 123 transitions. [2024-06-14 14:43:16,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 203 transitions, 2582 flow [2024-06-14 14:43:16,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 203 transitions, 2433 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 14:43:16,976 INFO L231 Difference]: Finished difference. Result has 233 places, 193 transitions, 1984 flow [2024-06-14 14:43:16,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1984, PETRI_PLACES=233, PETRI_TRANSITIONS=193} [2024-06-14 14:43:16,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-14 14:43:16,976 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 193 transitions, 1984 flow [2024-06-14 14:43:16,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:16,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:16,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:16,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 14:43:16,977 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:16,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1155300197, now seen corresponding path program 6 times [2024-06-14 14:43:16,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:16,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113115329] [2024-06-14 14:43:16,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:16,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113115329] [2024-06-14 14:43:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113115329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:22,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:22,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071673982] [2024-06-14 14:43:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:22,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:22,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:22,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 193 transitions, 1984 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:22,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:22,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:22,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:22,906 INFO L124 PetriNetUnfolderBase]: 416/816 cut-off events. [2024-06-14 14:43:22,906 INFO L125 PetriNetUnfolderBase]: For 24865/24865 co-relation queries the response was YES. [2024-06-14 14:43:22,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4733 conditions, 816 events. 416/816 cut-off events. For 24865/24865 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4418 event pairs, 117 based on Foata normal form. 1/817 useless extension candidates. Maximal degree in co-relation 4622. Up to 746 conditions per place. [2024-06-14 14:43:22,914 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 182 selfloop transitions, 17 changer transitions 0/202 dead transitions. [2024-06-14 14:43:22,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 202 transitions, 2402 flow [2024-06-14 14:43:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:43:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:43:22,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 14:43:22,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-14 14:43:22,915 INFO L175 Difference]: Start difference. First operand has 233 places, 193 transitions, 1984 flow. Second operand 10 states and 114 transitions. [2024-06-14 14:43:22,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 202 transitions, 2402 flow [2024-06-14 14:43:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 202 transitions, 2260 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 14:43:22,985 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1881 flow [2024-06-14 14:43:22,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1881, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2024-06-14 14:43:22,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-14 14:43:22,985 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1881 flow [2024-06-14 14:43:22,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:22,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:22,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 14:43:22,986 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:22,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1716269584, now seen corresponding path program 3 times [2024-06-14 14:43:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207959492] [2024-06-14 14:43:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207959492] [2024-06-14 14:43:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207959492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:27,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375567247] [2024-06-14 14:43:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:27,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:27,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:27,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:27,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:27,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1881 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:27,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:27,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:27,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:28,119 INFO L124 PetriNetUnfolderBase]: 432/852 cut-off events. [2024-06-14 14:43:28,119 INFO L125 PetriNetUnfolderBase]: For 38542/38542 co-relation queries the response was YES. [2024-06-14 14:43:28,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 852 events. 432/852 cut-off events. For 38542/38542 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4675 event pairs, 63 based on Foata normal form. 10/862 useless extension candidates. Maximal degree in co-relation 4741. Up to 687 conditions per place. [2024-06-14 14:43:28,126 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 38 changer transitions 4/207 dead transitions. [2024-06-14 14:43:28,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 207 transitions, 2391 flow [2024-06-14 14:43:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:43:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:43:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 14:43:28,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:43:28,127 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1881 flow. Second operand 10 states and 125 transitions. [2024-06-14 14:43:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 207 transitions, 2391 flow [2024-06-14 14:43:28,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 207 transitions, 2321 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 14:43:28,216 INFO L231 Difference]: Finished difference. Result has 235 places, 193 transitions, 1908 flow [2024-06-14 14:43:28,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1908, PETRI_PLACES=235, PETRI_TRANSITIONS=193} [2024-06-14 14:43:28,217 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-14 14:43:28,217 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 193 transitions, 1908 flow [2024-06-14 14:43:28,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:28,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:28,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:28,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 14:43:28,217 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:28,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash 112996425, now seen corresponding path program 7 times [2024-06-14 14:43:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:28,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865844947] [2024-06-14 14:43:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:34,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865844947] [2024-06-14 14:43:34,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865844947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:34,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:34,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:34,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410838980] [2024-06-14 14:43:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:34,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:34,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:34,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 193 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:34,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:34,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:34,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:34,842 INFO L124 PetriNetUnfolderBase]: 424/840 cut-off events. [2024-06-14 14:43:34,842 INFO L125 PetriNetUnfolderBase]: For 25337/25337 co-relation queries the response was YES. [2024-06-14 14:43:34,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4767 conditions, 840 events. 424/840 cut-off events. For 25337/25337 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4630 event pairs, 86 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 4654. Up to 731 conditions per place. [2024-06-14 14:43:34,848 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 168 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2024-06-14 14:43:34,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 202 transitions, 2326 flow [2024-06-14 14:43:34,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:43:34,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:43:34,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 14:43:34,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 14:43:34,849 INFO L175 Difference]: Start difference. First operand has 235 places, 193 transitions, 1908 flow. Second operand 10 states and 121 transitions. [2024-06-14 14:43:34,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 202 transitions, 2326 flow [2024-06-14 14:43:34,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 202 transitions, 2198 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 14:43:34,929 INFO L231 Difference]: Finished difference. Result has 236 places, 193 transitions, 1847 flow [2024-06-14 14:43:34,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1847, PETRI_PLACES=236, PETRI_TRANSITIONS=193} [2024-06-14 14:43:34,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-14 14:43:34,930 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 193 transitions, 1847 flow [2024-06-14 14:43:34,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:34,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:34,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:34,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 14:43:34,930 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:34,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash 191061113, now seen corresponding path program 8 times [2024-06-14 14:43:34,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:34,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702925508] [2024-06-14 14:43:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:40,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:40,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702925508] [2024-06-14 14:43:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702925508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:40,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:40,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502835483] [2024-06-14 14:43:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:40,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:40,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:40,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:40,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 193 transitions, 1847 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:40,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:40,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:40,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:40,969 INFO L124 PetriNetUnfolderBase]: 427/845 cut-off events. [2024-06-14 14:43:40,969 INFO L125 PetriNetUnfolderBase]: For 25982/25982 co-relation queries the response was YES. [2024-06-14 14:43:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4763 conditions, 845 events. 427/845 cut-off events. For 25982/25982 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4669 event pairs, 86 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 4650. Up to 667 conditions per place. [2024-06-14 14:43:40,977 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 65 changer transitions 0/206 dead transitions. [2024-06-14 14:43:40,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 206 transitions, 2331 flow [2024-06-14 14:43:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:43:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:43:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 14:43:40,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-14 14:43:40,978 INFO L175 Difference]: Start difference. First operand has 236 places, 193 transitions, 1847 flow. Second operand 12 states and 143 transitions. [2024-06-14 14:43:40,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 206 transitions, 2331 flow [2024-06-14 14:43:41,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 206 transitions, 2254 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 14:43:41,066 INFO L231 Difference]: Finished difference. Result has 239 places, 195 transitions, 1966 flow [2024-06-14 14:43:41,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1966, PETRI_PLACES=239, PETRI_TRANSITIONS=195} [2024-06-14 14:43:41,067 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-14 14:43:41,067 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 195 transitions, 1966 flow [2024-06-14 14:43:41,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:41,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:41,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:41,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 14:43:41,067 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:41,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1841420047, now seen corresponding path program 9 times [2024-06-14 14:43:41,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:41,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413628982] [2024-06-14 14:43:41,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:45,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413628982] [2024-06-14 14:43:45,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413628982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:45,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:45,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674440509] [2024-06-14 14:43:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:45,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:45,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:45,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:45,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:46,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:46,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 195 transitions, 1966 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:46,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:46,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:46,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:46,577 INFO L124 PetriNetUnfolderBase]: 430/852 cut-off events. [2024-06-14 14:43:46,578 INFO L125 PetriNetUnfolderBase]: For 27447/27447 co-relation queries the response was YES. [2024-06-14 14:43:46,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4935 conditions, 852 events. 430/852 cut-off events. For 27447/27447 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4719 event pairs, 86 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 4821. Up to 672 conditions per place. [2024-06-14 14:43:46,585 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 64 changer transitions 0/207 dead transitions. [2024-06-14 14:43:46,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 207 transitions, 2454 flow [2024-06-14 14:43:46,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:43:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:43:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 14:43:46,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 14:43:46,586 INFO L175 Difference]: Start difference. First operand has 239 places, 195 transitions, 1966 flow. Second operand 11 states and 134 transitions. [2024-06-14 14:43:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 207 transitions, 2454 flow [2024-06-14 14:43:46,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 207 transitions, 2274 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-14 14:43:46,670 INFO L231 Difference]: Finished difference. Result has 238 places, 197 transitions, 1984 flow [2024-06-14 14:43:46,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1984, PETRI_PLACES=238, PETRI_TRANSITIONS=197} [2024-06-14 14:43:46,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-14 14:43:46,671 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 197 transitions, 1984 flow [2024-06-14 14:43:46,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:46,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:46,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 14:43:46,672 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:46,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1155292478, now seen corresponding path program 4 times [2024-06-14 14:43:46,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:46,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530675926] [2024-06-14 14:43:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:51,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:51,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530675926] [2024-06-14 14:43:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530675926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:51,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:43:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240874914] [2024-06-14 14:43:51,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:51,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:43:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:51,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:43:51,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:43:51,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:43:51,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 197 transitions, 1984 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:51,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:51,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:43:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:52,126 INFO L124 PetriNetUnfolderBase]: 434/859 cut-off events. [2024-06-14 14:43:52,127 INFO L125 PetriNetUnfolderBase]: For 28550/28550 co-relation queries the response was YES. [2024-06-14 14:43:52,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 859 events. 434/859 cut-off events. For 28550/28550 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4759 event pairs, 123 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 4853. Up to 776 conditions per place. [2024-06-14 14:43:52,134 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 186 selfloop transitions, 18 changer transitions 0/207 dead transitions. [2024-06-14 14:43:52,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 207 transitions, 2438 flow [2024-06-14 14:43:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:43:52,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:43:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 14:43:52,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-14 14:43:52,135 INFO L175 Difference]: Start difference. First operand has 238 places, 197 transitions, 1984 flow. Second operand 9 states and 115 transitions. [2024-06-14 14:43:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 207 transitions, 2438 flow [2024-06-14 14:43:52,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 207 transitions, 2261 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-14 14:43:52,215 INFO L231 Difference]: Finished difference. Result has 237 places, 198 transitions, 1876 flow [2024-06-14 14:43:52,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1876, PETRI_PLACES=237, PETRI_TRANSITIONS=198} [2024-06-14 14:43:52,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-14 14:43:52,216 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 198 transitions, 1876 flow [2024-06-14 14:43:52,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:43:52,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:52,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:52,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 14:43:52,216 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:52,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:52,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1145769278, now seen corresponding path program 5 times [2024-06-14 14:43:52,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:52,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500368350] [2024-06-14 14:43:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:52,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:43:58,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:43:58,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:43:58,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500368350] [2024-06-14 14:43:58,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500368350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:43:58,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:43:58,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:43:58,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286921145] [2024-06-14 14:43:58,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:43:58,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:43:58,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:43:58,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:43:58,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:43:59,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:43:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 198 transitions, 1876 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:43:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:43:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:43:59,563 INFO L124 PetriNetUnfolderBase]: 438/867 cut-off events. [2024-06-14 14:43:59,563 INFO L125 PetriNetUnfolderBase]: For 28323/28323 co-relation queries the response was YES. [2024-06-14 14:43:59,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 867 events. 438/867 cut-off events. For 28323/28323 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4795 event pairs, 121 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 4784. Up to 770 conditions per place. [2024-06-14 14:43:59,571 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 187 selfloop transitions, 21 changer transitions 0/211 dead transitions. [2024-06-14 14:43:59,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 211 transitions, 2346 flow [2024-06-14 14:43:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:43:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:43:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 14:43:59,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-14 14:43:59,572 INFO L175 Difference]: Start difference. First operand has 237 places, 198 transitions, 1876 flow. Second operand 11 states and 125 transitions. [2024-06-14 14:43:59,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 211 transitions, 2346 flow [2024-06-14 14:43:59,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 211 transitions, 2289 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 14:43:59,660 INFO L231 Difference]: Finished difference. Result has 241 places, 199 transitions, 1895 flow [2024-06-14 14:43:59,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1895, PETRI_PLACES=241, PETRI_TRANSITIONS=199} [2024-06-14 14:43:59,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 14:43:59,661 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 199 transitions, 1895 flow [2024-06-14 14:43:59,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:43:59,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:43:59,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:43:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 14:43:59,661 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:43:59,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:43:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1411792988, now seen corresponding path program 6 times [2024-06-14 14:43:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:43:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671127951] [2024-06-14 14:43:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:43:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:43:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:04,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671127951] [2024-06-14 14:44:04,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671127951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:04,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:04,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:04,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242584554] [2024-06-14 14:44:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:04,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:04,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:04,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:44:04,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 199 transitions, 1895 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-14 14:44:04,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:04,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:44:04,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:05,130 INFO L124 PetriNetUnfolderBase]: 435/863 cut-off events. [2024-06-14 14:44:05,130 INFO L125 PetriNetUnfolderBase]: For 25586/25586 co-relation queries the response was YES. [2024-06-14 14:44:05,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4734 conditions, 863 events. 435/863 cut-off events. For 25586/25586 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4790 event pairs, 87 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 4620. Up to 719 conditions per place. [2024-06-14 14:44:05,136 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 43 changer transitions 0/209 dead transitions. [2024-06-14 14:44:05,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 209 transitions, 2329 flow [2024-06-14 14:44:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:44:05,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:44:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 14:44:05,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-14 14:44:05,138 INFO L175 Difference]: Start difference. First operand has 241 places, 199 transitions, 1895 flow. Second operand 10 states and 131 transitions. [2024-06-14 14:44:05,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 209 transitions, 2329 flow [2024-06-14 14:44:05,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 209 transitions, 2263 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 14:44:05,224 INFO L231 Difference]: Finished difference. Result has 242 places, 199 transitions, 1919 flow [2024-06-14 14:44:05,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1919, PETRI_PLACES=242, PETRI_TRANSITIONS=199} [2024-06-14 14:44:05,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-14 14:44:05,225 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 199 transitions, 1919 flow [2024-06-14 14:44:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-14 14:44:05,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:05,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 14:44:05,225 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:05,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1411793267, now seen corresponding path program 10 times [2024-06-14 14:44:05,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:05,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943983163] [2024-06-14 14:44:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:09,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943983163] [2024-06-14 14:44:09,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943983163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:09,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:09,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:09,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408780536] [2024-06-14 14:44:09,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:09,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:09,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:09,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:09,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:10,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:10,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 199 transitions, 1919 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:10,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:10,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:10,514 INFO L124 PetriNetUnfolderBase]: 433/860 cut-off events. [2024-06-14 14:44:10,514 INFO L125 PetriNetUnfolderBase]: For 22643/22643 co-relation queries the response was YES. [2024-06-14 14:44:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 860 events. 433/860 cut-off events. For 22643/22643 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4778 event pairs, 87 based on Foata normal form. 1/861 useless extension candidates. Maximal degree in co-relation 4540. Up to 674 conditions per place. [2024-06-14 14:44:10,521 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 145 selfloop transitions, 62 changer transitions 0/210 dead transitions. [2024-06-14 14:44:10,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 210 transitions, 2415 flow [2024-06-14 14:44:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:44:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:44:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:44:10,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 14:44:10,522 INFO L175 Difference]: Start difference. First operand has 242 places, 199 transitions, 1919 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:44:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 210 transitions, 2415 flow [2024-06-14 14:44:10,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 210 transitions, 2259 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 14:44:10,603 INFO L231 Difference]: Finished difference. Result has 242 places, 201 transitions, 1958 flow [2024-06-14 14:44:10,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1958, PETRI_PLACES=242, PETRI_TRANSITIONS=201} [2024-06-14 14:44:10,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-14 14:44:10,604 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 201 transitions, 1958 flow [2024-06-14 14:44:10,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:10,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:10,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 14:44:10,604 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:10,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1874740344, now seen corresponding path program 1 times [2024-06-14 14:44:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103360506] [2024-06-14 14:44:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103360506] [2024-06-14 14:44:15,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103360506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:15,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:15,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:15,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147239137] [2024-06-14 14:44:15,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:15,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:15,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:15,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:15,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:15,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:15,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 201 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:15,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:15,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:15,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:16,098 INFO L124 PetriNetUnfolderBase]: 449/896 cut-off events. [2024-06-14 14:44:16,098 INFO L125 PetriNetUnfolderBase]: For 34647/34647 co-relation queries the response was YES. [2024-06-14 14:44:16,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4791 conditions, 896 events. 449/896 cut-off events. For 34647/34647 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5024 event pairs, 73 based on Foata normal form. 8/904 useless extension candidates. Maximal degree in co-relation 4676. Up to 756 conditions per place. [2024-06-14 14:44:16,106 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 15 changer transitions 16/225 dead transitions. [2024-06-14 14:44:16,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 225 transitions, 2503 flow [2024-06-14 14:44:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 14:44:16,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 14:44:16,107 INFO L175 Difference]: Start difference. First operand has 242 places, 201 transitions, 1958 flow. Second operand 11 states and 134 transitions. [2024-06-14 14:44:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 225 transitions, 2503 flow [2024-06-14 14:44:16,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 225 transitions, 2303 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-14 14:44:16,195 INFO L231 Difference]: Finished difference. Result has 247 places, 198 transitions, 1769 flow [2024-06-14 14:44:16,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1769, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2024-06-14 14:44:16,196 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 14:44:16,196 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 1769 flow [2024-06-14 14:44:16,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:16,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:16,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:16,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 14:44:16,196 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:16,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1018124030, now seen corresponding path program 2 times [2024-06-14 14:44:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:16,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561329731] [2024-06-14 14:44:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561329731] [2024-06-14 14:44:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561329731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699001893] [2024-06-14 14:44:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:20,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:20,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:20,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:20,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:20,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 1769 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:20,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:20,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:20,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:21,198 INFO L124 PetriNetUnfolderBase]: 437/874 cut-off events. [2024-06-14 14:44:21,198 INFO L125 PetriNetUnfolderBase]: For 39917/39917 co-relation queries the response was YES. [2024-06-14 14:44:21,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 874 events. 437/874 cut-off events. For 39917/39917 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4906 event pairs, 74 based on Foata normal form. 10/884 useless extension candidates. Maximal degree in co-relation 4489. Up to 738 conditions per place. [2024-06-14 14:44:21,206 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 18 changer transitions 12/219 dead transitions. [2024-06-14 14:44:21,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 219 transitions, 2343 flow [2024-06-14 14:44:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 14:44:21,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 14:44:21,207 INFO L175 Difference]: Start difference. First operand has 247 places, 198 transitions, 1769 flow. Second operand 11 states and 134 transitions. [2024-06-14 14:44:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 219 transitions, 2343 flow [2024-06-14 14:44:21,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 219 transitions, 2305 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 14:44:21,285 INFO L231 Difference]: Finished difference. Result has 242 places, 194 transitions, 1732 flow [2024-06-14 14:44:21,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1732, PETRI_PLACES=242, PETRI_TRANSITIONS=194} [2024-06-14 14:44:21,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-14 14:44:21,286 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 194 transitions, 1732 flow [2024-06-14 14:44:21,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:21,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:21,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:21,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 14:44:21,286 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:21,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:21,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1994169400, now seen corresponding path program 3 times [2024-06-14 14:44:21,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292551622] [2024-06-14 14:44:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:28,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292551622] [2024-06-14 14:44:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292551622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:28,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:28,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110575985] [2024-06-14 14:44:28,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:28,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:28,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 194 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:28,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:28,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:28,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:28,901 INFO L124 PetriNetUnfolderBase]: 421/842 cut-off events. [2024-06-14 14:44:28,901 INFO L125 PetriNetUnfolderBase]: For 25692/25692 co-relation queries the response was YES. [2024-06-14 14:44:28,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 842 events. 421/842 cut-off events. For 25692/25692 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4683 event pairs, 62 based on Foata normal form. 2/844 useless extension candidates. Maximal degree in co-relation 4259. Up to 740 conditions per place. [2024-06-14 14:44:28,908 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 190 selfloop transitions, 20 changer transitions 0/213 dead transitions. [2024-06-14 14:44:28,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 213 transitions, 2219 flow [2024-06-14 14:44:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 14:44:28,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 14:44:28,910 INFO L175 Difference]: Start difference. First operand has 242 places, 194 transitions, 1732 flow. Second operand 11 states and 129 transitions. [2024-06-14 14:44:28,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 213 transitions, 2219 flow [2024-06-14 14:44:28,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 213 transitions, 2177 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:44:28,981 INFO L231 Difference]: Finished difference. Result has 241 places, 196 transitions, 1765 flow [2024-06-14 14:44:28,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1765, PETRI_PLACES=241, PETRI_TRANSITIONS=196} [2024-06-14 14:44:28,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 14:44:28,981 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 196 transitions, 1765 flow [2024-06-14 14:44:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:28,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:28,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 14:44:28,982 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:28,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1989873730, now seen corresponding path program 4 times [2024-06-14 14:44:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955412574] [2024-06-14 14:44:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:34,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:34,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955412574] [2024-06-14 14:44:34,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955412574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:34,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:34,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:34,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555903763] [2024-06-14 14:44:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:34,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:34,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 196 transitions, 1765 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:34,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:34,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:34,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:35,117 INFO L124 PetriNetUnfolderBase]: 433/870 cut-off events. [2024-06-14 14:44:35,117 INFO L125 PetriNetUnfolderBase]: For 34976/34976 co-relation queries the response was YES. [2024-06-14 14:44:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4538 conditions, 870 events. 433/870 cut-off events. For 34976/34976 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4864 event pairs, 66 based on Foata normal form. 8/878 useless extension candidates. Maximal degree in co-relation 4425. Up to 739 conditions per place. [2024-06-14 14:44:35,124 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 16 changer transitions 12/217 dead transitions. [2024-06-14 14:44:35,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 217 transitions, 2287 flow [2024-06-14 14:44:35,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:35,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 14:44:35,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:44:35,125 INFO L175 Difference]: Start difference. First operand has 241 places, 196 transitions, 1765 flow. Second operand 11 states and 132 transitions. [2024-06-14 14:44:35,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 217 transitions, 2287 flow [2024-06-14 14:44:35,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 217 transitions, 2231 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 14:44:35,214 INFO L231 Difference]: Finished difference. Result has 244 places, 193 transitions, 1720 flow [2024-06-14 14:44:35,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1720, PETRI_PLACES=244, PETRI_TRANSITIONS=193} [2024-06-14 14:44:35,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-14 14:44:35,214 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 193 transitions, 1720 flow [2024-06-14 14:44:35,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:35,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:35,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:35,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 14:44:35,214 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:35,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1661736278, now seen corresponding path program 5 times [2024-06-14 14:44:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418576513] [2024-06-14 14:44:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:41,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:41,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418576513] [2024-06-14 14:44:41,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418576513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:41,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:41,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:41,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171210658] [2024-06-14 14:44:41,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:41,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:41,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:41,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:41,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 193 transitions, 1720 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:41,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:41,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:41,582 INFO L124 PetriNetUnfolderBase]: 419/840 cut-off events. [2024-06-14 14:44:41,583 INFO L125 PetriNetUnfolderBase]: For 26454/26454 co-relation queries the response was YES. [2024-06-14 14:44:41,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 840 events. 419/840 cut-off events. For 26454/26454 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4653 event pairs, 47 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4261. Up to 699 conditions per place. [2024-06-14 14:44:41,589 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 21 changer transitions 0/215 dead transitions. [2024-06-14 14:44:41,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 215 transitions, 2219 flow [2024-06-14 14:44:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 14:44:41,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 14:44:41,590 INFO L175 Difference]: Start difference. First operand has 244 places, 193 transitions, 1720 flow. Second operand 11 states and 130 transitions. [2024-06-14 14:44:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 215 transitions, 2219 flow [2024-06-14 14:44:41,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 215 transitions, 2181 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:44:41,669 INFO L231 Difference]: Finished difference. Result has 241 places, 195 transitions, 1761 flow [2024-06-14 14:44:41,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=241, PETRI_TRANSITIONS=195} [2024-06-14 14:44:41,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-14 14:44:41,669 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 195 transitions, 1761 flow [2024-06-14 14:44:41,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:41,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:41,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:41,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 14:44:41,670 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:41,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1846843162, now seen corresponding path program 6 times [2024-06-14 14:44:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:41,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079245741] [2024-06-14 14:44:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079245741] [2024-06-14 14:44:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079245741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509514627] [2024-06-14 14:44:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:47,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:47,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:47,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:47,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 195 transitions, 1761 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:47,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:47,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:47,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:48,356 INFO L124 PetriNetUnfolderBase]: 427/856 cut-off events. [2024-06-14 14:44:48,357 INFO L125 PetriNetUnfolderBase]: For 26824/26824 co-relation queries the response was YES. [2024-06-14 14:44:48,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 856 events. 427/856 cut-off events. For 26824/26824 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4769 event pairs, 70 based on Foata normal form. 2/858 useless extension candidates. Maximal degree in co-relation 4384. Up to 751 conditions per place. [2024-06-14 14:44:48,363 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 16 changer transitions 0/216 dead transitions. [2024-06-14 14:44:48,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 216 transitions, 2266 flow [2024-06-14 14:44:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 14:44:48,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 14:44:48,365 INFO L175 Difference]: Start difference. First operand has 241 places, 195 transitions, 1761 flow. Second operand 11 states and 130 transitions. [2024-06-14 14:44:48,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 216 transitions, 2266 flow [2024-06-14 14:44:48,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 216 transitions, 2206 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 14:44:48,449 INFO L231 Difference]: Finished difference. Result has 245 places, 197 transitions, 1774 flow [2024-06-14 14:44:48,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1774, PETRI_PLACES=245, PETRI_TRANSITIONS=197} [2024-06-14 14:44:48,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-14 14:44:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 197 transitions, 1774 flow [2024-06-14 14:44:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:48,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:48,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:48,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 14:44:48,450 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:48,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:48,450 INFO L85 PathProgramCache]: Analyzing trace with hash 297414426, now seen corresponding path program 7 times [2024-06-14 14:44:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985210815] [2024-06-14 14:44:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:44:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:44:53,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:44:53,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985210815] [2024-06-14 14:44:53,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985210815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:44:53,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:44:53,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:44:53,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296276998] [2024-06-14 14:44:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:44:53,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:44:53,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:44:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:44:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:44:53,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:44:53,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 197 transitions, 1774 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:53,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:44:53,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:44:53,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:44:54,168 INFO L124 PetriNetUnfolderBase]: 439/884 cut-off events. [2024-06-14 14:44:54,169 INFO L125 PetriNetUnfolderBase]: For 37980/37980 co-relation queries the response was YES. [2024-06-14 14:44:54,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 884 events. 439/884 cut-off events. For 37980/37980 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4952 event pairs, 72 based on Foata normal form. 8/892 useless extension candidates. Maximal degree in co-relation 4512. Up to 764 conditions per place. [2024-06-14 14:44:54,179 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 13 changer transitions 12/217 dead transitions. [2024-06-14 14:44:54,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 217 transitions, 2298 flow [2024-06-14 14:44:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:44:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:44:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 14:44:54,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-14 14:44:54,180 INFO L175 Difference]: Start difference. First operand has 245 places, 197 transitions, 1774 flow. Second operand 11 states and 131 transitions. [2024-06-14 14:44:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 217 transitions, 2298 flow [2024-06-14 14:44:54,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 217 transitions, 2244 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 14:44:54,271 INFO L231 Difference]: Finished difference. Result has 248 places, 194 transitions, 1725 flow [2024-06-14 14:44:54,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1725, PETRI_PLACES=248, PETRI_TRANSITIONS=194} [2024-06-14 14:44:54,272 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-14 14:44:54,272 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 194 transitions, 1725 flow [2024-06-14 14:44:54,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:44:54,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:44:54,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:44:54,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 14:44:54,272 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:44:54,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:44:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 302176026, now seen corresponding path program 8 times [2024-06-14 14:44:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:44:54,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879382415] [2024-06-14 14:44:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:44:54,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:44:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:00,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:00,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879382415] [2024-06-14 14:45:00,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879382415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597067547] [2024-06-14 14:45:00,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:00,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:00,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:00,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:00,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 194 transitions, 1725 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:00,763 INFO L124 PetriNetUnfolderBase]: 421/846 cut-off events. [2024-06-14 14:45:00,763 INFO L125 PetriNetUnfolderBase]: For 28123/28123 co-relation queries the response was YES. [2024-06-14 14:45:00,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 846 events. 421/846 cut-off events. For 28123/28123 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4714 event pairs, 74 based on Foata normal form. 2/848 useless extension candidates. Maximal degree in co-relation 4316. Up to 760 conditions per place. [2024-06-14 14:45:00,769 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 18 changer transitions 0/210 dead transitions. [2024-06-14 14:45:00,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 210 transitions, 2205 flow [2024-06-14 14:45:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:00,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:00,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 14:45:00,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-14 14:45:00,771 INFO L175 Difference]: Start difference. First operand has 248 places, 194 transitions, 1725 flow. Second operand 11 states and 128 transitions. [2024-06-14 14:45:00,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 210 transitions, 2205 flow [2024-06-14 14:45:00,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 210 transitions, 2173 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:45:00,855 INFO L231 Difference]: Finished difference. Result has 244 places, 195 transitions, 1763 flow [2024-06-14 14:45:00,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1763, PETRI_PLACES=244, PETRI_TRANSITIONS=195} [2024-06-14 14:45:00,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-14 14:45:00,855 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 195 transitions, 1763 flow [2024-06-14 14:45:00,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:00,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:00,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:00,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 14:45:00,856 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:00,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash 301998396, now seen corresponding path program 9 times [2024-06-14 14:45:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602557729] [2024-06-14 14:45:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:05,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:05,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602557729] [2024-06-14 14:45:05,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602557729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:05,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:05,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:05,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686788585] [2024-06-14 14:45:05,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:05,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:05,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:05,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:05,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:05,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:05,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 195 transitions, 1763 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:05,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:05,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:05,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:06,052 INFO L124 PetriNetUnfolderBase]: 429/862 cut-off events. [2024-06-14 14:45:06,053 INFO L125 PetriNetUnfolderBase]: For 28549/28549 co-relation queries the response was YES. [2024-06-14 14:45:06,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 862 events. 429/862 cut-off events. For 28549/28549 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4823 event pairs, 72 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 4428. Up to 762 conditions per place. [2024-06-14 14:45:06,060 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 191 selfloop transitions, 19 changer transitions 0/213 dead transitions. [2024-06-14 14:45:06,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 213 transitions, 2258 flow [2024-06-14 14:45:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 14:45:06,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 14:45:06,061 INFO L175 Difference]: Start difference. First operand has 244 places, 195 transitions, 1763 flow. Second operand 11 states and 130 transitions. [2024-06-14 14:45:06,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 213 transitions, 2258 flow [2024-06-14 14:45:06,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 213 transitions, 2182 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 14:45:06,146 INFO L231 Difference]: Finished difference. Result has 247 places, 197 transitions, 1772 flow [2024-06-14 14:45:06,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1772, PETRI_PLACES=247, PETRI_TRANSITIONS=197} [2024-06-14 14:45:06,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-14 14:45:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 197 transitions, 1772 flow [2024-06-14 14:45:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:06,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 14:45:06,147 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:06,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash -457637250, now seen corresponding path program 10 times [2024-06-14 14:45:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:06,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821592544] [2024-06-14 14:45:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:06,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:10,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821592544] [2024-06-14 14:45:10,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821592544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:10,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:10,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394158072] [2024-06-14 14:45:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:10,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:10,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:10,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:10,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:10,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 197 transitions, 1772 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:10,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:10,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:10,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:10,889 INFO L124 PetriNetUnfolderBase]: 433/870 cut-off events. [2024-06-14 14:45:10,889 INFO L125 PetriNetUnfolderBase]: For 29366/29366 co-relation queries the response was YES. [2024-06-14 14:45:10,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4596 conditions, 870 events. 433/870 cut-off events. For 29366/29366 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4881 event pairs, 76 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 4480. Up to 762 conditions per place. [2024-06-14 14:45:10,896 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 31 changer transitions 0/212 dead transitions. [2024-06-14 14:45:10,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 212 transitions, 2256 flow [2024-06-14 14:45:10,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 14:45:10,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 14:45:10,897 INFO L175 Difference]: Start difference. First operand has 247 places, 197 transitions, 1772 flow. Second operand 11 states and 134 transitions. [2024-06-14 14:45:10,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 212 transitions, 2256 flow [2024-06-14 14:45:10,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 212 transitions, 2192 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 14:45:10,994 INFO L231 Difference]: Finished difference. Result has 250 places, 198 transitions, 1808 flow [2024-06-14 14:45:10,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1808, PETRI_PLACES=250, PETRI_TRANSITIONS=198} [2024-06-14 14:45:10,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-14 14:45:10,995 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 198 transitions, 1808 flow [2024-06-14 14:45:10,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:10,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:10,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:10,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 14:45:10,995 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:10,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:10,995 INFO L85 PathProgramCache]: Analyzing trace with hash -406103150, now seen corresponding path program 11 times [2024-06-14 14:45:10,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:10,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863078717] [2024-06-14 14:45:10,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863078717] [2024-06-14 14:45:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863078717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:16,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:16,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:16,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316814748] [2024-06-14 14:45:16,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:16,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:16,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:16,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 198 transitions, 1808 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:16,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:16,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:16,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:17,499 INFO L124 PetriNetUnfolderBase]: 444/891 cut-off events. [2024-06-14 14:45:17,499 INFO L125 PetriNetUnfolderBase]: For 35233/35233 co-relation queries the response was YES. [2024-06-14 14:45:17,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4918 conditions, 891 events. 444/891 cut-off events. For 35233/35233 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5005 event pairs, 75 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 4801. Up to 766 conditions per place. [2024-06-14 14:45:17,506 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 28 changer transitions 0/217 dead transitions. [2024-06-14 14:45:17,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 217 transitions, 2476 flow [2024-06-14 14:45:17,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:45:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:45:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 14:45:17,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:45:17,507 INFO L175 Difference]: Start difference. First operand has 250 places, 198 transitions, 1808 flow. Second operand 12 states and 144 transitions. [2024-06-14 14:45:17,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 217 transitions, 2476 flow [2024-06-14 14:45:17,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 217 transitions, 2398 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 14:45:17,610 INFO L231 Difference]: Finished difference. Result has 254 places, 200 transitions, 1860 flow [2024-06-14 14:45:17,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1860, PETRI_PLACES=254, PETRI_TRANSITIONS=200} [2024-06-14 14:45:17,611 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-14 14:45:17,611 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 200 transitions, 1860 flow [2024-06-14 14:45:17,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:17,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:17,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:17,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 14:45:17,611 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:17,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash -451381140, now seen corresponding path program 12 times [2024-06-14 14:45:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535264044] [2024-06-14 14:45:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:23,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:23,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535264044] [2024-06-14 14:45:23,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535264044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:23,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:23,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691916948] [2024-06-14 14:45:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:23,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:23,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:23,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:23,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 200 transitions, 1860 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:23,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:23,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:23,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:24,268 INFO L124 PetriNetUnfolderBase]: 453/914 cut-off events. [2024-06-14 14:45:24,268 INFO L125 PetriNetUnfolderBase]: For 49829/49829 co-relation queries the response was YES. [2024-06-14 14:45:24,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4899 conditions, 914 events. 453/914 cut-off events. For 49829/49829 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5206 event pairs, 82 based on Foata normal form. 10/924 useless extension candidates. Maximal degree in co-relation 4781. Up to 774 conditions per place. [2024-06-14 14:45:24,276 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 27 changer transitions 6/217 dead transitions. [2024-06-14 14:45:24,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 217 transitions, 2390 flow [2024-06-14 14:45:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:24,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 14:45:24,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-14 14:45:24,277 INFO L175 Difference]: Start difference. First operand has 254 places, 200 transitions, 1860 flow. Second operand 11 states and 136 transitions. [2024-06-14 14:45:24,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 217 transitions, 2390 flow [2024-06-14 14:45:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 217 transitions, 2295 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 14:45:24,383 INFO L231 Difference]: Finished difference. Result has 257 places, 197 transitions, 1793 flow [2024-06-14 14:45:24,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1793, PETRI_PLACES=257, PETRI_TRANSITIONS=197} [2024-06-14 14:45:24,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-14 14:45:24,384 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 197 transitions, 1793 flow [2024-06-14 14:45:24,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:24,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:24,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 14:45:24,385 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash -572336930, now seen corresponding path program 13 times [2024-06-14 14:45:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498711840] [2024-06-14 14:45:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:24,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:29,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:29,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498711840] [2024-06-14 14:45:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498711840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:29,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:29,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744909968] [2024-06-14 14:45:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:29,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:29,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 197 transitions, 1793 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:29,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:29,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:29,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:30,178 INFO L124 PetriNetUnfolderBase]: 448/905 cut-off events. [2024-06-14 14:45:30,178 INFO L125 PetriNetUnfolderBase]: For 43681/43681 co-relation queries the response was YES. [2024-06-14 14:45:30,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 905 events. 448/905 cut-off events. For 43681/43681 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5103 event pairs, 78 based on Foata normal form. 8/913 useless extension candidates. Maximal degree in co-relation 4655. Up to 794 conditions per place. [2024-06-14 14:45:30,186 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 188 selfloop transitions, 13 changer transitions 11/215 dead transitions. [2024-06-14 14:45:30,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 215 transitions, 2315 flow [2024-06-14 14:45:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:30,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 14:45:30,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-14 14:45:30,192 INFO L175 Difference]: Start difference. First operand has 257 places, 197 transitions, 1793 flow. Second operand 11 states and 129 transitions. [2024-06-14 14:45:30,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 215 transitions, 2315 flow [2024-06-14 14:45:30,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 215 transitions, 2247 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 14:45:30,299 INFO L231 Difference]: Finished difference. Result has 257 places, 194 transitions, 1712 flow [2024-06-14 14:45:30,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1712, PETRI_PLACES=257, PETRI_TRANSITIONS=194} [2024-06-14 14:45:30,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-14 14:45:30,299 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 194 transitions, 1712 flow [2024-06-14 14:45:30,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:45:30,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:30,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:30,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 14:45:30,300 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:30,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:30,300 INFO L85 PathProgramCache]: Analyzing trace with hash -628632630, now seen corresponding path program 14 times [2024-06-14 14:45:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59447634] [2024-06-14 14:45:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:36,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59447634] [2024-06-14 14:45:36,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59447634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:36,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:36,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:36,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450464744] [2024-06-14 14:45:36,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:36,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:36,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:36,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:36,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:36,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 14:45:36,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 194 transitions, 1712 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-14 14:45:36,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:36,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 14:45:36,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:36,958 INFO L124 PetriNetUnfolderBase]: 433/872 cut-off events. [2024-06-14 14:45:36,958 INFO L125 PetriNetUnfolderBase]: For 32582/32582 co-relation queries the response was YES. [2024-06-14 14:45:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 872 events. 433/872 cut-off events. For 32582/32582 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4902 event pairs, 76 based on Foata normal form. 2/874 useless extension candidates. Maximal degree in co-relation 4465. Up to 780 conditions per place. [2024-06-14 14:45:36,967 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 192 selfloop transitions, 16 changer transitions 0/211 dead transitions. [2024-06-14 14:45:36,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 211 transitions, 2202 flow [2024-06-14 14:45:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 14:45:36,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 14:45:36,968 INFO L175 Difference]: Start difference. First operand has 257 places, 194 transitions, 1712 flow. Second operand 11 states and 116 transitions. [2024-06-14 14:45:36,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 211 transitions, 2202 flow [2024-06-14 14:45:37,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 211 transitions, 2166 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 14:45:37,077 INFO L231 Difference]: Finished difference. Result has 253 places, 195 transitions, 1750 flow [2024-06-14 14:45:37,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1750, PETRI_PLACES=253, PETRI_TRANSITIONS=195} [2024-06-14 14:45:37,077 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-14 14:45:37,077 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 195 transitions, 1750 flow [2024-06-14 14:45:37,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-14 14:45:37,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:37,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:37,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 14:45:37,078 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:37,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash 302182970, now seen corresponding path program 1 times [2024-06-14 14:45:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15523031] [2024-06-14 14:45:37,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:42,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15523031] [2024-06-14 14:45:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15523031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:42,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:45:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899333476] [2024-06-14 14:45:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:42,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:45:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:45:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:45:42,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:42,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 195 transitions, 1750 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:42,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:42,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:42,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:42,675 INFO L124 PetriNetUnfolderBase]: 445/900 cut-off events. [2024-06-14 14:45:42,675 INFO L125 PetriNetUnfolderBase]: For 47277/47277 co-relation queries the response was YES. [2024-06-14 14:45:42,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4778 conditions, 900 events. 445/900 cut-off events. For 47277/47277 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5117 event pairs, 72 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 4659. Up to 776 conditions per place. [2024-06-14 14:45:42,682 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 183 selfloop transitions, 19 changer transitions 9/214 dead transitions. [2024-06-14 14:45:42,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 214 transitions, 2280 flow [2024-06-14 14:45:42,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:45:42,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:45:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 14:45:42,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 14:45:42,684 INFO L175 Difference]: Start difference. First operand has 253 places, 195 transitions, 1750 flow. Second operand 12 states and 141 transitions. [2024-06-14 14:45:42,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 214 transitions, 2280 flow [2024-06-14 14:45:42,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 214 transitions, 2216 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 14:45:42,797 INFO L231 Difference]: Finished difference. Result has 256 places, 192 transitions, 1708 flow [2024-06-14 14:45:42,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1708, PETRI_PLACES=256, PETRI_TRANSITIONS=192} [2024-06-14 14:45:42,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-14 14:45:42,798 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 192 transitions, 1708 flow [2024-06-14 14:45:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:42,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 14:45:42,798 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:42,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash -399662466, now seen corresponding path program 2 times [2024-06-14 14:45:42,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:42,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52405668] [2024-06-14 14:45:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52405668] [2024-06-14 14:45:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52405668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:49,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:49,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:45:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601590672] [2024-06-14 14:45:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:49,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:45:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:45:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:45:50,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 192 transitions, 1708 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:50,625 INFO L124 PetriNetUnfolderBase]: 440/897 cut-off events. [2024-06-14 14:45:50,625 INFO L125 PetriNetUnfolderBase]: For 48429/48429 co-relation queries the response was YES. [2024-06-14 14:45:50,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 897 events. 440/897 cut-off events. For 48429/48429 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5111 event pairs, 86 based on Foata normal form. 8/905 useless extension candidates. Maximal degree in co-relation 4583. Up to 773 conditions per place. [2024-06-14 14:45:50,633 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 20 changer transitions 9/210 dead transitions. [2024-06-14 14:45:50,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 210 transitions, 2226 flow [2024-06-14 14:45:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:45:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:45:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 14:45:50,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-14 14:45:50,634 INFO L175 Difference]: Start difference. First operand has 256 places, 192 transitions, 1708 flow. Second operand 12 states and 143 transitions. [2024-06-14 14:45:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 210 transitions, 2226 flow [2024-06-14 14:45:50,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 210 transitions, 2184 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 14:45:50,745 INFO L231 Difference]: Finished difference. Result has 255 places, 189 transitions, 1675 flow [2024-06-14 14:45:50,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1675, PETRI_PLACES=255, PETRI_TRANSITIONS=189} [2024-06-14 14:45:50,746 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-14 14:45:50,746 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 189 transitions, 1675 flow [2024-06-14 14:45:50,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:50,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:50,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:50,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 14:45:50,747 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:50,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -399423456, now seen corresponding path program 3 times [2024-06-14 14:45:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:50,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504428503] [2024-06-14 14:45:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:50,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:45:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:45:55,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:45:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504428503] [2024-06-14 14:45:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504428503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:45:55,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:45:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:45:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085105734] [2024-06-14 14:45:55,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:45:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:45:55,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:45:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:45:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:45:55,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:45:55,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 189 transitions, 1675 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:55,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:45:55,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:45:55,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:45:56,412 INFO L124 PetriNetUnfolderBase]: 453/928 cut-off events. [2024-06-14 14:45:56,412 INFO L125 PetriNetUnfolderBase]: For 61603/61603 co-relation queries the response was YES. [2024-06-14 14:45:56,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5435 conditions, 928 events. 453/928 cut-off events. For 61603/61603 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5312 event pairs, 92 based on Foata normal form. 6/934 useless extension candidates. Maximal degree in co-relation 5315. Up to 733 conditions per place. [2024-06-14 14:45:56,423 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 19 changer transitions 7/210 dead transitions. [2024-06-14 14:45:56,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 210 transitions, 2379 flow [2024-06-14 14:45:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:45:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:45:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 14:45:56,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-14 14:45:56,424 INFO L175 Difference]: Start difference. First operand has 255 places, 189 transitions, 1675 flow. Second operand 11 states and 138 transitions. [2024-06-14 14:45:56,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 210 transitions, 2379 flow [2024-06-14 14:45:56,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2331 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 14:45:56,596 INFO L231 Difference]: Finished difference. Result has 252 places, 186 transitions, 1637 flow [2024-06-14 14:45:56,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1637, PETRI_PLACES=252, PETRI_TRANSITIONS=186} [2024-06-14 14:45:56,597 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-14 14:45:56,597 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 186 transitions, 1637 flow [2024-06-14 14:45:56,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:45:56,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:45:56,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:45:56,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 14:45:56,597 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:45:56,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:45:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash -405918576, now seen corresponding path program 4 times [2024-06-14 14:45:56,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:45:56,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913086702] [2024-06-14 14:45:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:45:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:45:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913086702] [2024-06-14 14:46:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913086702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:03,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:46:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063801013] [2024-06-14 14:46:03,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:03,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:46:03,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:03,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:46:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:46:03,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:03,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 186 transitions, 1637 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:46:03,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:03,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:03,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:04,258 INFO L124 PetriNetUnfolderBase]: 443/906 cut-off events. [2024-06-14 14:46:04,258 INFO L125 PetriNetUnfolderBase]: For 62366/62366 co-relation queries the response was YES. [2024-06-14 14:46:04,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 906 events. 443/906 cut-off events. For 62366/62366 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5138 event pairs, 97 based on Foata normal form. 8/914 useless extension candidates. Maximal degree in co-relation 5017. Up to 786 conditions per place. [2024-06-14 14:46:04,267 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 18 changer transitions 9/204 dead transitions. [2024-06-14 14:46:04,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 204 transitions, 2143 flow [2024-06-14 14:46:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:46:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:46:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 14:46:04,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 14:46:04,268 INFO L175 Difference]: Start difference. First operand has 252 places, 186 transitions, 1637 flow. Second operand 12 states and 141 transitions. [2024-06-14 14:46:04,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 204 transitions, 2143 flow [2024-06-14 14:46:04,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 204 transitions, 2101 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 14:46:04,411 INFO L231 Difference]: Finished difference. Result has 250 places, 183 transitions, 1602 flow [2024-06-14 14:46:04,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1602, PETRI_PLACES=250, PETRI_TRANSITIONS=183} [2024-06-14 14:46:04,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-14 14:46:04,412 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 183 transitions, 1602 flow [2024-06-14 14:46:04,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:46:04,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:04,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:04,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 14:46:04,412 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:04,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:04,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1651937802, now seen corresponding path program 15 times [2024-06-14 14:46:04,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931367264] [2024-06-14 14:46:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931367264] [2024-06-14 14:46:09,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931367264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:09,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:09,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704748516] [2024-06-14 14:46:09,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:09,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:09,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:09,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 14:46:09,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 183 transitions, 1602 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-14 14:46:09,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:09,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 14:46:09,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:09,901 INFO L124 PetriNetUnfolderBase]: 438/899 cut-off events. [2024-06-14 14:46:09,901 INFO L125 PetriNetUnfolderBase]: For 61640/61640 co-relation queries the response was YES. [2024-06-14 14:46:09,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5076 conditions, 899 events. 438/899 cut-off events. For 61640/61640 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5073 event pairs, 68 based on Foata normal form. 8/907 useless extension candidates. Maximal degree in co-relation 4959. Up to 680 conditions per place. [2024-06-14 14:46:09,908 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 161 selfloop transitions, 12 changer transitions 27/203 dead transitions. [2024-06-14 14:46:09,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 203 transitions, 2106 flow [2024-06-14 14:46:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:09,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 14:46:09,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-14 14:46:09,908 INFO L175 Difference]: Start difference. First operand has 250 places, 183 transitions, 1602 flow. Second operand 10 states and 111 transitions. [2024-06-14 14:46:09,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 203 transitions, 2106 flow [2024-06-14 14:46:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 203 transitions, 2059 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 14:46:10,034 INFO L231 Difference]: Finished difference. Result has 246 places, 169 transitions, 1485 flow [2024-06-14 14:46:10,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1485, PETRI_PLACES=246, PETRI_TRANSITIONS=169} [2024-06-14 14:46:10,034 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-14 14:46:10,034 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 169 transitions, 1485 flow [2024-06-14 14:46:10,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 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) [2024-06-14 14:46:10,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:10,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:10,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 14:46:10,035 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:10,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1096353428, now seen corresponding path program 16 times [2024-06-14 14:46:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153721347] [2024-06-14 14:46:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:13,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153721347] [2024-06-14 14:46:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153721347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:13,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:13,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660348702] [2024-06-14 14:46:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:13,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:13,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:13,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:13,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:14,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:14,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 169 transitions, 1485 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:14,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:14,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:14,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:14,383 INFO L124 PetriNetUnfolderBase]: 385/794 cut-off events. [2024-06-14 14:46:14,383 INFO L125 PetriNetUnfolderBase]: For 67147/67147 co-relation queries the response was YES. [2024-06-14 14:46:14,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4788 conditions, 794 events. 385/794 cut-off events. For 67147/67147 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4398 event pairs, 71 based on Foata normal form. 10/804 useless extension candidates. Maximal degree in co-relation 4684. Up to 637 conditions per place. [2024-06-14 14:46:14,389 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 19 changer transitions 14/186 dead transitions. [2024-06-14 14:46:14,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 186 transitions, 2023 flow [2024-06-14 14:46:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:14,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 14:46:14,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 14:46:14,390 INFO L175 Difference]: Start difference. First operand has 246 places, 169 transitions, 1485 flow. Second operand 10 states and 119 transitions. [2024-06-14 14:46:14,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 186 transitions, 2023 flow [2024-06-14 14:46:14,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 186 transitions, 1971 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-14 14:46:14,516 INFO L231 Difference]: Finished difference. Result has 229 places, 163 transitions, 1429 flow [2024-06-14 14:46:14,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1429, PETRI_PLACES=229, PETRI_TRANSITIONS=163} [2024-06-14 14:46:14,516 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-14 14:46:14,516 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 163 transitions, 1429 flow [2024-06-14 14:46:14,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:14,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:14,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 14:46:14,517 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1769747274, now seen corresponding path program 17 times [2024-06-14 14:46:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943734357] [2024-06-14 14:46:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943734357] [2024-06-14 14:46:18,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943734357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:18,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:18,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:18,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696418841] [2024-06-14 14:46:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:18,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:18,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:18,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 163 transitions, 1429 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:18,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:18,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:18,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:19,323 INFO L124 PetriNetUnfolderBase]: 366/761 cut-off events. [2024-06-14 14:46:19,323 INFO L125 PetriNetUnfolderBase]: For 51421/51421 co-relation queries the response was YES. [2024-06-14 14:46:19,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 761 events. 366/761 cut-off events. For 51421/51421 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4150 event pairs, 52 based on Foata normal form. 8/769 useless extension candidates. Maximal degree in co-relation 4344. Up to 591 conditions per place. [2024-06-14 14:46:19,329 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 142 selfloop transitions, 10 changer transitions 24/179 dead transitions. [2024-06-14 14:46:19,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 179 transitions, 1871 flow [2024-06-14 14:46:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:19,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:46:19,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 14:46:19,330 INFO L175 Difference]: Start difference. First operand has 229 places, 163 transitions, 1429 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:46:19,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 179 transitions, 1871 flow [2024-06-14 14:46:19,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 179 transitions, 1809 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-14 14:46:19,426 INFO L231 Difference]: Finished difference. Result has 223 places, 148 transitions, 1279 flow [2024-06-14 14:46:19,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=223, PETRI_TRANSITIONS=148} [2024-06-14 14:46:19,427 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-14 14:46:19,427 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 148 transitions, 1279 flow [2024-06-14 14:46:19,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:19,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:19,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:19,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 14:46:19,428 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:19,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 102509066, now seen corresponding path program 18 times [2024-06-14 14:46:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853186236] [2024-06-14 14:46:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:24,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:24,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:24,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853186236] [2024-06-14 14:46:24,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853186236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:24,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:24,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:24,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296568763] [2024-06-14 14:46:24,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:24,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:24,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:24,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:24,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:24,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:24,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 148 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:24,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:24,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:24,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:24,710 INFO L124 PetriNetUnfolderBase]: 325/668 cut-off events. [2024-06-14 14:46:24,710 INFO L125 PetriNetUnfolderBase]: For 37063/37063 co-relation queries the response was YES. [2024-06-14 14:46:24,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3986 conditions, 668 events. 325/668 cut-off events. For 37063/37063 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3484 event pairs, 50 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 3891. Up to 577 conditions per place. [2024-06-14 14:46:24,716 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 146 selfloop transitions, 13 changer transitions 1/163 dead transitions. [2024-06-14 14:46:24,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 163 transitions, 1661 flow [2024-06-14 14:46:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:24,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 14:46:24,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-14 14:46:24,717 INFO L175 Difference]: Start difference. First operand has 223 places, 148 transitions, 1279 flow. Second operand 10 states and 113 transitions. [2024-06-14 14:46:24,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 163 transitions, 1661 flow [2024-06-14 14:46:24,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 163 transitions, 1612 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-14 14:46:24,806 INFO L231 Difference]: Finished difference. Result has 204 places, 149 transitions, 1292 flow [2024-06-14 14:46:24,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1292, PETRI_PLACES=204, PETRI_TRANSITIONS=149} [2024-06-14 14:46:24,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 14:46:24,807 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 149 transitions, 1292 flow [2024-06-14 14:46:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:24,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:24,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 14:46:24,807 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:24,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:24,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1581649082, now seen corresponding path program 19 times [2024-06-14 14:46:24,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:24,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009216550] [2024-06-14 14:46:24,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:24,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:30,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:30,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:30,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009216550] [2024-06-14 14:46:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009216550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:30,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:30,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346597312] [2024-06-14 14:46:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:30,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:30,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:30,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:30,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 149 transitions, 1292 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:30,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:30,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:30,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:30,543 INFO L124 PetriNetUnfolderBase]: 359/742 cut-off events. [2024-06-14 14:46:30,543 INFO L125 PetriNetUnfolderBase]: For 53844/53844 co-relation queries the response was YES. [2024-06-14 14:46:30,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 742 events. 359/742 cut-off events. For 53844/53844 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3979 event pairs, 70 based on Foata normal form. 8/750 useless extension candidates. Maximal degree in co-relation 4648. Up to 555 conditions per place. [2024-06-14 14:46:30,551 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 16 changer transitions 11/172 dead transitions. [2024-06-14 14:46:30,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 172 transitions, 1938 flow [2024-06-14 14:46:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 14:46:30,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 14:46:30,552 INFO L175 Difference]: Start difference. First operand has 204 places, 149 transitions, 1292 flow. Second operand 10 states and 125 transitions. [2024-06-14 14:46:30,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 172 transitions, 1938 flow [2024-06-14 14:46:30,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 172 transitions, 1890 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 14:46:30,666 INFO L231 Difference]: Finished difference. Result has 207 places, 147 transitions, 1267 flow [2024-06-14 14:46:30,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1267, PETRI_PLACES=207, PETRI_TRANSITIONS=147} [2024-06-14 14:46:30,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-14 14:46:30,667 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 147 transitions, 1267 flow [2024-06-14 14:46:30,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:30,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:30,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:30,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 14:46:30,668 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:30,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:30,668 INFO L85 PathProgramCache]: Analyzing trace with hash 890947948, now seen corresponding path program 20 times [2024-06-14 14:46:30,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:30,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745827604] [2024-06-14 14:46:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:30,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:36,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:36,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745827604] [2024-06-14 14:46:36,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745827604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:36,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:36,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949298958] [2024-06-14 14:46:36,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:36,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:36,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:36,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:36,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:36,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 147 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:36,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:36,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:36,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:37,057 INFO L124 PetriNetUnfolderBase]: 328/677 cut-off events. [2024-06-14 14:46:37,057 INFO L125 PetriNetUnfolderBase]: For 42570/42570 co-relation queries the response was YES. [2024-06-14 14:46:37,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4259 conditions, 677 events. 328/677 cut-off events. For 42570/42570 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3531 event pairs, 61 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 4168. Up to 595 conditions per place. [2024-06-14 14:46:37,063 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 18 changer transitions 2/161 dead transitions. [2024-06-14 14:46:37,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 161 transitions, 1649 flow [2024-06-14 14:46:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:37,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:37,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 14:46:37,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 14:46:37,065 INFO L175 Difference]: Start difference. First operand has 207 places, 147 transitions, 1267 flow. Second operand 10 states and 115 transitions. [2024-06-14 14:46:37,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 161 transitions, 1649 flow [2024-06-14 14:46:37,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 161 transitions, 1606 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 14:46:37,156 INFO L231 Difference]: Finished difference. Result has 208 places, 148 transitions, 1298 flow [2024-06-14 14:46:37,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1298, PETRI_PLACES=208, PETRI_TRANSITIONS=148} [2024-06-14 14:46:37,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 14:46:37,157 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 148 transitions, 1298 flow [2024-06-14 14:46:37,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:37,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:37,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:37,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 14:46:37,158 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:37,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1577065112, now seen corresponding path program 21 times [2024-06-14 14:46:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:37,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614191783] [2024-06-14 14:46:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:42,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614191783] [2024-06-14 14:46:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614191783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:42,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649216764] [2024-06-14 14:46:42,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:42,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:42,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:42,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:42,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:42,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:42,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 148 transitions, 1298 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:42,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:42,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:42,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:42,724 INFO L124 PetriNetUnfolderBase]: 331/682 cut-off events. [2024-06-14 14:46:42,724 INFO L125 PetriNetUnfolderBase]: For 40987/40987 co-relation queries the response was YES. [2024-06-14 14:46:42,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 682 events. 331/682 cut-off events. For 40987/40987 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3547 event pairs, 46 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 4206. Up to 568 conditions per place. [2024-06-14 14:46:42,730 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 138 selfloop transitions, 21 changer transitions 1/163 dead transitions. [2024-06-14 14:46:42,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 163 transitions, 1680 flow [2024-06-14 14:46:42,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:42,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 14:46:42,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 14:46:42,731 INFO L175 Difference]: Start difference. First operand has 208 places, 148 transitions, 1298 flow. Second operand 10 states and 116 transitions. [2024-06-14 14:46:42,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 163 transitions, 1680 flow [2024-06-14 14:46:42,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 163 transitions, 1614 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 14:46:42,830 INFO L231 Difference]: Finished difference. Result has 209 places, 149 transitions, 1312 flow [2024-06-14 14:46:42,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1312, PETRI_PLACES=209, PETRI_TRANSITIONS=149} [2024-06-14 14:46:42,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 14:46:42,831 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 149 transitions, 1312 flow [2024-06-14 14:46:42,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:42,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:42,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:42,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 14:46:42,831 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:42,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash -601003860, now seen corresponding path program 22 times [2024-06-14 14:46:42,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:42,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497374663] [2024-06-14 14:46:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:48,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:48,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497374663] [2024-06-14 14:46:48,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497374663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:48,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:48,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404805866] [2024-06-14 14:46:48,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:48,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:48,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:48,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:48,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 149 transitions, 1312 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:48,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:48,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:48,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:48,894 INFO L124 PetriNetUnfolderBase]: 335/690 cut-off events. [2024-06-14 14:46:48,894 INFO L125 PetriNetUnfolderBase]: For 43313/43313 co-relation queries the response was YES. [2024-06-14 14:46:48,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4369 conditions, 690 events. 335/690 cut-off events. For 43313/43313 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3609 event pairs, 65 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 4278. Up to 560 conditions per place. [2024-06-14 14:46:48,900 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 38 changer transitions 1/162 dead transitions. [2024-06-14 14:46:48,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 162 transitions, 1690 flow [2024-06-14 14:46:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:48,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 14:46:48,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 14:46:48,902 INFO L175 Difference]: Start difference. First operand has 209 places, 149 transitions, 1312 flow. Second operand 10 states and 122 transitions. [2024-06-14 14:46:48,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 162 transitions, 1690 flow [2024-06-14 14:46:49,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 162 transitions, 1620 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 14:46:49,007 INFO L231 Difference]: Finished difference. Result has 211 places, 150 transitions, 1358 flow [2024-06-14 14:46:49,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=211, PETRI_TRANSITIONS=150} [2024-06-14 14:46:49,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 14:46:49,008 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 150 transitions, 1358 flow [2024-06-14 14:46:49,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:49,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:49,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:49,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 14:46:49,008 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:49,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash -601008510, now seen corresponding path program 23 times [2024-06-14 14:46:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:49,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868831688] [2024-06-14 14:46:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:49,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:46:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:46:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:46:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868831688] [2024-06-14 14:46:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868831688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:46:55,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:46:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:46:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797917860] [2024-06-14 14:46:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:46:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:46:55,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:46:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:46:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:46:55,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:46:55,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 150 transitions, 1358 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:55,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:46:55,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:46:55,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:46:55,940 INFO L124 PetriNetUnfolderBase]: 368/757 cut-off events. [2024-06-14 14:46:55,940 INFO L125 PetriNetUnfolderBase]: For 61782/61782 co-relation queries the response was YES. [2024-06-14 14:46:55,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 757 events. 368/757 cut-off events. For 61782/61782 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4072 event pairs, 72 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 5306. Up to 534 conditions per place. [2024-06-14 14:46:55,947 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 42 changer transitions 1/169 dead transitions. [2024-06-14 14:46:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 169 transitions, 1966 flow [2024-06-14 14:46:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:46:55,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:46:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 14:46:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 14:46:55,948 INFO L175 Difference]: Start difference. First operand has 211 places, 150 transitions, 1358 flow. Second operand 10 states and 127 transitions. [2024-06-14 14:46:55,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 169 transitions, 1966 flow [2024-06-14 14:46:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 169 transitions, 1860 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 14:46:56,094 INFO L231 Difference]: Finished difference. Result has 213 places, 152 transitions, 1410 flow [2024-06-14 14:46:56,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1410, PETRI_PLACES=213, PETRI_TRANSITIONS=152} [2024-06-14 14:46:56,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 14:46:56,096 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 152 transitions, 1410 flow [2024-06-14 14:46:56,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:46:56,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:46:56,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:46:56,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 14:46:56,097 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:46:56,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:46:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1068079468, now seen corresponding path program 24 times [2024-06-14 14:46:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:46:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259878138] [2024-06-14 14:46:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:46:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:46:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:01,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:01,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259878138] [2024-06-14 14:47:01,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259878138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:01,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:01,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:47:01,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746220636] [2024-06-14 14:47:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:01,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:47:01,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:47:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:47:01,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:01,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 152 transitions, 1410 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:01,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:01,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:01,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:02,271 INFO L124 PetriNetUnfolderBase]: 355/734 cut-off events. [2024-06-14 14:47:02,272 INFO L125 PetriNetUnfolderBase]: For 57855/57855 co-relation queries the response was YES. [2024-06-14 14:47:02,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 734 events. 355/734 cut-off events. For 57855/57855 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3943 event pairs, 69 based on Foata normal form. 10/744 useless extension candidates. Maximal degree in co-relation 4560. Up to 572 conditions per place. [2024-06-14 14:47:02,278 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 35 changer transitions 7/167 dead transitions. [2024-06-14 14:47:02,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 167 transitions, 1828 flow [2024-06-14 14:47:02,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:47:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:47:02,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:47:02,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 14:47:02,278 INFO L175 Difference]: Start difference. First operand has 213 places, 152 transitions, 1410 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:47:02,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 167 transitions, 1828 flow [2024-06-14 14:47:02,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 167 transitions, 1727 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 14:47:02,380 INFO L231 Difference]: Finished difference. Result has 215 places, 149 transitions, 1358 flow [2024-06-14 14:47:02,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=215, PETRI_TRANSITIONS=149} [2024-06-14 14:47:02,380 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-14 14:47:02,380 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 149 transitions, 1358 flow [2024-06-14 14:47:02,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:02,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:02,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:02,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 14:47:02,380 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:02,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:02,381 INFO L85 PathProgramCache]: Analyzing trace with hash -924451240, now seen corresponding path program 5 times [2024-06-14 14:47:02,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:02,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178520161] [2024-06-14 14:47:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:02,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:11,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:11,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178520161] [2024-06-14 14:47:11,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178520161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:11,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:11,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:47:11,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585898105] [2024-06-14 14:47:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:11,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:47:11,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:11,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:47:11,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:47:11,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 149 transitions, 1358 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:11,858 INFO L124 PetriNetUnfolderBase]: 350/725 cut-off events. [2024-06-14 14:47:11,858 INFO L125 PetriNetUnfolderBase]: For 53783/53783 co-relation queries the response was YES. [2024-06-14 14:47:11,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4564 conditions, 725 events. 350/725 cut-off events. For 53783/53783 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3893 event pairs, 67 based on Foata normal form. 8/733 useless extension candidates. Maximal degree in co-relation 4471. Up to 574 conditions per place. [2024-06-14 14:47:11,864 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 31 changer transitions 8/165 dead transitions. [2024-06-14 14:47:11,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 165 transitions, 1774 flow [2024-06-14 14:47:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:47:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:47:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 14:47:11,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:47:11,865 INFO L175 Difference]: Start difference. First operand has 215 places, 149 transitions, 1358 flow. Second operand 11 states and 132 transitions. [2024-06-14 14:47:11,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 165 transitions, 1774 flow [2024-06-14 14:47:11,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 165 transitions, 1651 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 14:47:11,980 INFO L231 Difference]: Finished difference. Result has 213 places, 146 transitions, 1284 flow [2024-06-14 14:47:11,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1284, PETRI_PLACES=213, PETRI_TRANSITIONS=146} [2024-06-14 14:47:11,981 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-14 14:47:11,981 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 146 transitions, 1284 flow [2024-06-14 14:47:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:11,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:11,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 14:47:11,982 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:11,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash -600823936, now seen corresponding path program 6 times [2024-06-14 14:47:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:11,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785807389] [2024-06-14 14:47:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:22,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785807389] [2024-06-14 14:47:22,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785807389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:22,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:22,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:47:22,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662113836] [2024-06-14 14:47:22,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:22,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:47:22,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:22,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:47:22,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:47:22,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:22,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 146 transitions, 1284 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:22,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:22,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:22,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:22,775 INFO L124 PetriNetUnfolderBase]: 345/722 cut-off events. [2024-06-14 14:47:22,776 INFO L125 PetriNetUnfolderBase]: For 53415/53415 co-relation queries the response was YES. [2024-06-14 14:47:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 722 events. 345/722 cut-off events. For 53415/53415 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3871 event pairs, 69 based on Foata normal form. 8/730 useless extension candidates. Maximal degree in co-relation 4357. Up to 567 conditions per place. [2024-06-14 14:47:22,781 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 29 changer transitions 8/162 dead transitions. [2024-06-14 14:47:22,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 162 transitions, 1692 flow [2024-06-14 14:47:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:47:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:47:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 14:47:22,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:47:22,782 INFO L175 Difference]: Start difference. First operand has 213 places, 146 transitions, 1284 flow. Second operand 11 states and 132 transitions. [2024-06-14 14:47:22,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 162 transitions, 1692 flow [2024-06-14 14:47:22,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 162 transitions, 1622 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 14:47:22,887 INFO L231 Difference]: Finished difference. Result has 211 places, 143 transitions, 1257 flow [2024-06-14 14:47:22,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1257, PETRI_PLACES=211, PETRI_TRANSITIONS=143} [2024-06-14 14:47:22,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 14:47:22,888 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 143 transitions, 1257 flow [2024-06-14 14:47:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:22,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:22,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:22,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 14:47:22,888 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:22,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:22,889 INFO L85 PathProgramCache]: Analyzing trace with hash -594328816, now seen corresponding path program 7 times [2024-06-14 14:47:22,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:22,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062294673] [2024-06-14 14:47:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:22,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062294673] [2024-06-14 14:47:27,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062294673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:27,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:47:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969824551] [2024-06-14 14:47:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:27,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:47:27,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:47:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:47:28,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:28,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 143 transitions, 1257 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:28,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:28,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:28,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:28,501 INFO L124 PetriNetUnfolderBase]: 336/707 cut-off events. [2024-06-14 14:47:28,501 INFO L125 PetriNetUnfolderBase]: For 47345/47345 co-relation queries the response was YES. [2024-06-14 14:47:28,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4331 conditions, 707 events. 336/707 cut-off events. For 47345/47345 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3779 event pairs, 65 based on Foata normal form. 6/713 useless extension candidates. Maximal degree in co-relation 4241. Up to 555 conditions per place. [2024-06-14 14:47:28,507 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 118 selfloop transitions, 26 changer transitions 10/157 dead transitions. [2024-06-14 14:47:28,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 157 transitions, 1629 flow [2024-06-14 14:47:28,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:47:28,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:47:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 14:47:28,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-14 14:47:28,507 INFO L175 Difference]: Start difference. First operand has 211 places, 143 transitions, 1257 flow. Second operand 11 states and 126 transitions. [2024-06-14 14:47:28,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 157 transitions, 1629 flow [2024-06-14 14:47:28,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 157 transitions, 1563 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 14:47:28,601 INFO L231 Difference]: Finished difference. Result has 209 places, 140 transitions, 1221 flow [2024-06-14 14:47:28,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1221, PETRI_PLACES=209, PETRI_TRANSITIONS=140} [2024-06-14 14:47:28,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 14:47:28,602 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 140 transitions, 1221 flow [2024-06-14 14:47:28,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:47:28,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:28,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 14:47:28,603 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:28,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -792083986, now seen corresponding path program 25 times [2024-06-14 14:47:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:28,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391612915] [2024-06-14 14:47:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391612915] [2024-06-14 14:47:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391612915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:47:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512764693] [2024-06-14 14:47:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:34,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:47:34,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:34,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:47:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:47:34,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:34,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 140 transitions, 1221 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:34,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:34,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:35,403 INFO L124 PetriNetUnfolderBase]: 325/678 cut-off events. [2024-06-14 14:47:35,404 INFO L125 PetriNetUnfolderBase]: For 40230/40230 co-relation queries the response was YES. [2024-06-14 14:47:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4197 conditions, 678 events. 325/678 cut-off events. For 40230/40230 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3566 event pairs, 70 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 4108. Up to 559 conditions per place. [2024-06-14 14:47:35,409 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 35 changer transitions 1/151 dead transitions. [2024-06-14 14:47:35,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 151 transitions, 1569 flow [2024-06-14 14:47:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:47:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:47:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 14:47:35,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 14:47:35,410 INFO L175 Difference]: Start difference. First operand has 209 places, 140 transitions, 1221 flow. Second operand 10 states and 122 transitions. [2024-06-14 14:47:35,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 151 transitions, 1569 flow [2024-06-14 14:47:35,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 151 transitions, 1509 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:47:35,510 INFO L231 Difference]: Finished difference. Result has 204 places, 141 transitions, 1267 flow [2024-06-14 14:47:35,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1267, PETRI_PLACES=204, PETRI_TRANSITIONS=141} [2024-06-14 14:47:35,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 14:47:35,510 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 141 transitions, 1267 flow [2024-06-14 14:47:35,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:35,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:35,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:35,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 14:47:35,511 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:35,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1321926668, now seen corresponding path program 26 times [2024-06-14 14:47:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:35,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614909702] [2024-06-14 14:47:35,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:42,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614909702] [2024-06-14 14:47:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614909702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:42,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:47:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144482195] [2024-06-14 14:47:42,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:47:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:47:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:47:43,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:43,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 141 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:43,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:43,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:43,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:43,574 INFO L124 PetriNetUnfolderBase]: 358/745 cut-off events. [2024-06-14 14:47:43,574 INFO L125 PetriNetUnfolderBase]: For 54992/54992 co-relation queries the response was YES. [2024-06-14 14:47:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5187 conditions, 745 events. 358/745 cut-off events. For 54992/54992 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3988 event pairs, 81 based on Foata normal form. 2/747 useless extension candidates. Maximal degree in co-relation 5100. Up to 553 conditions per place. [2024-06-14 14:47:43,581 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 37 changer transitions 1/158 dead transitions. [2024-06-14 14:47:43,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 158 transitions, 1837 flow [2024-06-14 14:47:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:47:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:47:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 14:47:43,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 14:47:43,582 INFO L175 Difference]: Start difference. First operand has 204 places, 141 transitions, 1267 flow. Second operand 10 states and 127 transitions. [2024-06-14 14:47:43,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 158 transitions, 1837 flow [2024-06-14 14:47:43,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 158 transitions, 1725 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 14:47:43,707 INFO L231 Difference]: Finished difference. Result has 205 places, 143 transitions, 1301 flow [2024-06-14 14:47:43,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1301, PETRI_PLACES=205, PETRI_TRANSITIONS=143} [2024-06-14 14:47:43,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2024-06-14 14:47:43,707 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 143 transitions, 1301 flow [2024-06-14 14:47:43,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:43,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:43,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 14:47:43,708 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:43,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:43,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1255708584, now seen corresponding path program 27 times [2024-06-14 14:47:43,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:43,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536532018] [2024-06-14 14:47:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:43,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:52,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:52,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536532018] [2024-06-14 14:47:52,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536532018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:52,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:52,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:47:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541408570] [2024-06-14 14:47:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:47:52,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:47:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:47:52,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 14:47:52,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 143 transitions, 1301 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-14 14:47:52,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:52,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 14:47:52,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:53,170 INFO L124 PetriNetUnfolderBase]: 362/753 cut-off events. [2024-06-14 14:47:53,170 INFO L125 PetriNetUnfolderBase]: For 56857/56857 co-relation queries the response was YES. [2024-06-14 14:47:53,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5226 conditions, 753 events. 362/753 cut-off events. For 56857/56857 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4072 event pairs, 83 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5139. Up to 580 conditions per place. [2024-06-14 14:47:53,175 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 53 changer transitions 1/156 dead transitions. [2024-06-14 14:47:53,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 156 transitions, 1667 flow [2024-06-14 14:47:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:47:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:47:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 14:47:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-14 14:47:53,177 INFO L175 Difference]: Start difference. First operand has 205 places, 143 transitions, 1301 flow. Second operand 12 states and 154 transitions. [2024-06-14 14:47:53,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 156 transitions, 1667 flow [2024-06-14 14:47:53,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 156 transitions, 1588 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 14:47:53,301 INFO L231 Difference]: Finished difference. Result has 211 places, 144 transitions, 1370 flow [2024-06-14 14:47:53,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1370, PETRI_PLACES=211, PETRI_TRANSITIONS=144} [2024-06-14 14:47:53,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 14:47:53,302 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 144 transitions, 1370 flow [2024-06-14 14:47:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-14 14:47:53,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:53,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:53,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 14:47:53,302 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:53,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash -785827876, now seen corresponding path program 28 times [2024-06-14 14:47:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100910036] [2024-06-14 14:47:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:53,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:47:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:47:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:47:58,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100910036] [2024-06-14 14:47:58,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100910036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:47:58,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:47:58,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:47:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327201287] [2024-06-14 14:47:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:47:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:47:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:47:58,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:47:58,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:47:58,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:47:58,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 144 transitions, 1370 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:58,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:47:58,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:47:58,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:47:59,226 INFO L124 PetriNetUnfolderBase]: 349/730 cut-off events. [2024-06-14 14:47:59,226 INFO L125 PetriNetUnfolderBase]: For 55004/55004 co-relation queries the response was YES. [2024-06-14 14:47:59,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4587 conditions, 730 events. 349/730 cut-off events. For 55004/55004 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3931 event pairs, 74 based on Foata normal form. 10/740 useless extension candidates. Maximal degree in co-relation 4498. Up to 579 conditions per place. [2024-06-14 14:47:59,231 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 115 selfloop transitions, 32 changer transitions 7/157 dead transitions. [2024-06-14 14:47:59,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 157 transitions, 1756 flow [2024-06-14 14:47:59,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:47:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:47:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 14:47:59,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 14:47:59,232 INFO L175 Difference]: Start difference. First operand has 211 places, 144 transitions, 1370 flow. Second operand 10 states and 124 transitions. [2024-06-14 14:47:59,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 157 transitions, 1756 flow [2024-06-14 14:47:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 157 transitions, 1606 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-14 14:47:59,339 INFO L231 Difference]: Finished difference. Result has 211 places, 141 transitions, 1267 flow [2024-06-14 14:47:59,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1267, PETRI_PLACES=211, PETRI_TRANSITIONS=141} [2024-06-14 14:47:59,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 14:47:59,340 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 141 transitions, 1267 flow [2024-06-14 14:47:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:47:59,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:47:59,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:47:59,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 14:47:59,340 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:47:59,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:47:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1454573604, now seen corresponding path program 29 times [2024-06-14 14:47:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:47:59,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078295852] [2024-06-14 14:47:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:47:59,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:47:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:04,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:04,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078295852] [2024-06-14 14:48:04,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078295852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:04,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:04,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:04,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194561819] [2024-06-14 14:48:04,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:04,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:04,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:04,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:04,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 141 transitions, 1267 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:04,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:04,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:04,623 INFO L124 PetriNetUnfolderBase]: 348/729 cut-off events. [2024-06-14 14:48:04,623 INFO L125 PetriNetUnfolderBase]: For 56428/56428 co-relation queries the response was YES. [2024-06-14 14:48:04,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 729 events. 348/729 cut-off events. For 56428/56428 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3948 event pairs, 106 based on Foata normal form. 10/739 useless extension candidates. Maximal degree in co-relation 4436. Up to 616 conditions per place. [2024-06-14 14:48:04,628 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 20 changer transitions 7/155 dead transitions. [2024-06-14 14:48:04,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 155 transitions, 1685 flow [2024-06-14 14:48:04,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 14:48:04,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 14:48:04,629 INFO L175 Difference]: Start difference. First operand has 211 places, 141 transitions, 1267 flow. Second operand 10 states and 121 transitions. [2024-06-14 14:48:04,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 155 transitions, 1685 flow [2024-06-14 14:48:04,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 155 transitions, 1599 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 14:48:04,740 INFO L231 Difference]: Finished difference. Result has 210 places, 138 transitions, 1236 flow [2024-06-14 14:48:04,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1236, PETRI_PLACES=210, PETRI_TRANSITIONS=138} [2024-06-14 14:48:04,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-14 14:48:04,740 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 138 transitions, 1236 flow [2024-06-14 14:48:04,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:04,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:04,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:04,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 14:48:04,741 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:04,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1155692888, now seen corresponding path program 30 times [2024-06-14 14:48:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700161149] [2024-06-14 14:48:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:04,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700161149] [2024-06-14 14:48:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700161149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:09,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:09,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:09,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300072710] [2024-06-14 14:48:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:09,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:09,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:09,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 138 transitions, 1236 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:09,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:09,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:09,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:09,935 INFO L124 PetriNetUnfolderBase]: 340/711 cut-off events. [2024-06-14 14:48:09,935 INFO L125 PetriNetUnfolderBase]: For 49279/49279 co-relation queries the response was YES. [2024-06-14 14:48:09,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4646 conditions, 711 events. 340/711 cut-off events. For 49279/49279 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3820 event pairs, 73 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 4556. Up to 609 conditions per place. [2024-06-14 14:48:09,941 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 22 changer transitions 2/153 dead transitions. [2024-06-14 14:48:09,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 153 transitions, 1763 flow [2024-06-14 14:48:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:09,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 14:48:09,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-14 14:48:09,942 INFO L175 Difference]: Start difference. First operand has 210 places, 138 transitions, 1236 flow. Second operand 10 states and 119 transitions. [2024-06-14 14:48:09,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 153 transitions, 1763 flow [2024-06-14 14:48:10,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 153 transitions, 1663 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-14 14:48:10,053 INFO L231 Difference]: Finished difference. Result has 211 places, 140 transitions, 1269 flow [2024-06-14 14:48:10,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1269, PETRI_PLACES=211, PETRI_TRANSITIONS=140} [2024-06-14 14:48:10,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-14 14:48:10,054 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 140 transitions, 1269 flow [2024-06-14 14:48:10,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:10,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:10,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:10,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 14:48:10,055 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:10,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1255886214, now seen corresponding path program 31 times [2024-06-14 14:48:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:10,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068637851] [2024-06-14 14:48:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068637851] [2024-06-14 14:48:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068637851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:16,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:16,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44766975] [2024-06-14 14:48:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:16,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:16,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 140 transitions, 1269 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:16,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:16,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:16,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:16,885 INFO L124 PetriNetUnfolderBase]: 362/753 cut-off events. [2024-06-14 14:48:16,885 INFO L125 PetriNetUnfolderBase]: For 66825/66825 co-relation queries the response was YES. [2024-06-14 14:48:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5505 conditions, 753 events. 362/753 cut-off events. For 66825/66825 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4075 event pairs, 84 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 5414. Up to 478 conditions per place. [2024-06-14 14:48:16,890 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 90 selfloop transitions, 63 changer transitions 1/157 dead transitions. [2024-06-14 14:48:16,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 157 transitions, 1855 flow [2024-06-14 14:48:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 14:48:16,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 14:48:16,891 INFO L175 Difference]: Start difference. First operand has 211 places, 140 transitions, 1269 flow. Second operand 10 states and 130 transitions. [2024-06-14 14:48:16,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 157 transitions, 1855 flow [2024-06-14 14:48:17,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 157 transitions, 1776 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 14:48:17,017 INFO L231 Difference]: Finished difference. Result has 215 places, 142 transitions, 1398 flow [2024-06-14 14:48:17,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1398, PETRI_PLACES=215, PETRI_TRANSITIONS=142} [2024-06-14 14:48:17,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-14 14:48:17,018 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 142 transitions, 1398 flow [2024-06-14 14:48:17,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:17,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:17,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:17,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 14:48:17,019 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:17,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash -958317766, now seen corresponding path program 32 times [2024-06-14 14:48:17,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:17,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997009627] [2024-06-14 14:48:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:22,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:22,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997009627] [2024-06-14 14:48:22,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997009627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:22,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:22,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:22,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052456749] [2024-06-14 14:48:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:22,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:22,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:22,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:22,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 142 transitions, 1398 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:22,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:22,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:22,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:22,833 INFO L124 PetriNetUnfolderBase]: 367/768 cut-off events. [2024-06-14 14:48:22,833 INFO L125 PetriNetUnfolderBase]: For 74092/74092 co-relation queries the response was YES. [2024-06-14 14:48:22,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5473 conditions, 768 events. 367/768 cut-off events. For 74092/74092 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4189 event pairs, 91 based on Foata normal form. 8/776 useless extension candidates. Maximal degree in co-relation 5381. Up to 659 conditions per place. [2024-06-14 14:48:22,839 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 18 changer transitions 9/154 dead transitions. [2024-06-14 14:48:22,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 154 transitions, 1744 flow [2024-06-14 14:48:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:22,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-14 14:48:22,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-14 14:48:22,840 INFO L175 Difference]: Start difference. First operand has 215 places, 142 transitions, 1398 flow. Second operand 10 states and 117 transitions. [2024-06-14 14:48:22,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 154 transitions, 1744 flow [2024-06-14 14:48:22,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 154 transitions, 1607 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-14 14:48:22,984 INFO L231 Difference]: Finished difference. Result has 220 places, 139 transitions, 1276 flow [2024-06-14 14:48:22,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1276, PETRI_PLACES=220, PETRI_TRANSITIONS=139} [2024-06-14 14:48:22,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-14 14:48:22,985 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 139 transitions, 1276 flow [2024-06-14 14:48:22,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:22,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:22,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:22,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 14:48:22,985 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:22,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:22,986 INFO L85 PathProgramCache]: Analyzing trace with hash -963079366, now seen corresponding path program 33 times [2024-06-14 14:48:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516404656] [2024-06-14 14:48:22,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:28,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516404656] [2024-06-14 14:48:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516404656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:28,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233966497] [2024-06-14 14:48:28,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:28,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:28,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:28,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:28,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:28,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 139 transitions, 1276 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:28,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:28,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:28,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:28,522 INFO L124 PetriNetUnfolderBase]: 357/750 cut-off events. [2024-06-14 14:48:28,522 INFO L125 PetriNetUnfolderBase]: For 71149/71149 co-relation queries the response was YES. [2024-06-14 14:48:28,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 750 events. 357/750 cut-off events. For 71149/71149 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4064 event pairs, 80 based on Foata normal form. 8/758 useless extension candidates. Maximal degree in co-relation 5042. Up to 631 conditions per place. [2024-06-14 14:48:28,529 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 121 selfloop transitions, 16 changer transitions 13/153 dead transitions. [2024-06-14 14:48:28,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 153 transitions, 1624 flow [2024-06-14 14:48:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 14:48:28,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 14:48:28,529 INFO L175 Difference]: Start difference. First operand has 220 places, 139 transitions, 1276 flow. Second operand 10 states and 118 transitions. [2024-06-14 14:48:28,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 153 transitions, 1624 flow [2024-06-14 14:48:28,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 153 transitions, 1578 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 14:48:28,696 INFO L231 Difference]: Finished difference. Result has 217 places, 135 transitions, 1205 flow [2024-06-14 14:48:28,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1205, PETRI_PLACES=217, PETRI_TRANSITIONS=135} [2024-06-14 14:48:28,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-14 14:48:28,697 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 135 transitions, 1205 flow [2024-06-14 14:48:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:28,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:28,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 14:48:28,697 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:28,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -816154822, now seen corresponding path program 34 times [2024-06-14 14:48:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125976758] [2024-06-14 14:48:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125976758] [2024-06-14 14:48:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125976758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:48:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93027248] [2024-06-14 14:48:33,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:33,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:48:33,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:33,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:48:33,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:48:33,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:33,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 135 transitions, 1205 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:33,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:33,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:34,209 INFO L124 PetriNetUnfolderBase]: 322/681 cut-off events. [2024-06-14 14:48:34,210 INFO L125 PetriNetUnfolderBase]: For 56939/56939 co-relation queries the response was YES. [2024-06-14 14:48:34,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 681 events. 322/681 cut-off events. For 56939/56939 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3631 event pairs, 71 based on Foata normal form. 10/691 useless extension candidates. Maximal degree in co-relation 4056. Up to 456 conditions per place. [2024-06-14 14:48:34,214 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 52 changer transitions 7/148 dead transitions. [2024-06-14 14:48:34,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 148 transitions, 1573 flow [2024-06-14 14:48:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:48:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:48:34,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 14:48:34,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-14 14:48:34,215 INFO L175 Difference]: Start difference. First operand has 217 places, 135 transitions, 1205 flow. Second operand 10 states and 129 transitions. [2024-06-14 14:48:34,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 148 transitions, 1573 flow [2024-06-14 14:48:34,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 148 transitions, 1442 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-14 14:48:34,317 INFO L231 Difference]: Finished difference. Result has 209 places, 132 transitions, 1161 flow [2024-06-14 14:48:34,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1161, PETRI_PLACES=209, PETRI_TRANSITIONS=132} [2024-06-14 14:48:34,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 14:48:34,317 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 132 transitions, 1161 flow [2024-06-14 14:48:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-14 14:48:34,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:34,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 14:48:34,318 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:34,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:34,318 INFO L85 PathProgramCache]: Analyzing trace with hash -792077042, now seen corresponding path program 8 times [2024-06-14 14:48:34,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:34,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907679483] [2024-06-14 14:48:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:40,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907679483] [2024-06-14 14:48:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907679483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:40,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:40,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:48:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091753695] [2024-06-14 14:48:40,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:40,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:48:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:48:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:48:40,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:40,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 132 transitions, 1161 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:40,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:40,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:40,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:41,379 INFO L124 PetriNetUnfolderBase]: 317/672 cut-off events. [2024-06-14 14:48:41,380 INFO L125 PetriNetUnfolderBase]: For 50221/50221 co-relation queries the response was YES. [2024-06-14 14:48:41,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3931 conditions, 672 events. 317/672 cut-off events. For 50221/50221 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3573 event pairs, 71 based on Foata normal form. 8/680 useless extension candidates. Maximal degree in co-relation 3844. Up to 536 conditions per place. [2024-06-14 14:48:41,385 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 27 changer transitions 8/146 dead transitions. [2024-06-14 14:48:41,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 146 transitions, 1527 flow [2024-06-14 14:48:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:48:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:48:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 14:48:41,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 14:48:41,387 INFO L175 Difference]: Start difference. First operand has 209 places, 132 transitions, 1161 flow. Second operand 11 states and 133 transitions. [2024-06-14 14:48:41,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 146 transitions, 1527 flow [2024-06-14 14:48:41,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 146 transitions, 1364 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 14:48:41,487 INFO L231 Difference]: Finished difference. Result has 209 places, 129 transitions, 1040 flow [2024-06-14 14:48:41,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1040, PETRI_PLACES=209, PETRI_TRANSITIONS=129} [2024-06-14 14:48:41,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-14 14:48:41,487 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 129 transitions, 1040 flow [2024-06-14 14:48:41,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:41,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:41,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:41,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 14:48:41,488 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:41,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:41,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1664511342, now seen corresponding path program 9 times [2024-06-14 14:48:41,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:41,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003477112] [2024-06-14 14:48:41,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:41,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:47,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:47,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003477112] [2024-06-14 14:48:47,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003477112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:47,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:47,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:48:47,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764534998] [2024-06-14 14:48:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:48:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:47,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:48:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:48:47,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:47,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 129 transitions, 1040 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:47,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:47,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:47,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:48,312 INFO L124 PetriNetUnfolderBase]: 312/668 cut-off events. [2024-06-14 14:48:48,313 INFO L125 PetriNetUnfolderBase]: For 48581/48581 co-relation queries the response was YES. [2024-06-14 14:48:48,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 668 events. 312/668 cut-off events. For 48581/48581 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3581 event pairs, 76 based on Foata normal form. 8/676 useless extension candidates. Maximal degree in co-relation 3653. Up to 530 conditions per place. [2024-06-14 14:48:48,317 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 24 changer transitions 9/141 dead transitions. [2024-06-14 14:48:48,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 141 transitions, 1386 flow [2024-06-14 14:48:48,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:48:48,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:48:48,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 14:48:48,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 14:48:48,319 INFO L175 Difference]: Start difference. First operand has 209 places, 129 transitions, 1040 flow. Second operand 11 states and 127 transitions. [2024-06-14 14:48:48,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 141 transitions, 1386 flow [2024-06-14 14:48:48,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 141 transitions, 1322 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 14:48:48,407 INFO L231 Difference]: Finished difference. Result has 208 places, 126 transitions, 1009 flow [2024-06-14 14:48:48,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1009, PETRI_PLACES=208, PETRI_TRANSITIONS=126} [2024-06-14 14:48:48,407 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-14 14:48:48,407 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 126 transitions, 1009 flow [2024-06-14 14:48:48,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:48,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:48,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:48,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 14:48:48,407 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:48,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:48,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1027561480, now seen corresponding path program 10 times [2024-06-14 14:48:48,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:48,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832735372] [2024-06-14 14:48:48,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:48,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:53,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:53,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832735372] [2024-06-14 14:48:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832735372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:53,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:48:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628400926] [2024-06-14 14:48:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:53,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:48:53,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:48:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:48:53,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:53,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 126 transitions, 1009 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:53,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:53,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:53,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:54,283 INFO L124 PetriNetUnfolderBase]: 329/712 cut-off events. [2024-06-14 14:48:54,283 INFO L125 PetriNetUnfolderBase]: For 55713/55713 co-relation queries the response was YES. [2024-06-14 14:48:54,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 712 events. 329/712 cut-off events. For 55713/55713 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3866 event pairs, 111 based on Foata normal form. 6/718 useless extension candidates. Maximal degree in co-relation 4243. Up to 564 conditions per place. [2024-06-14 14:48:54,288 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 120 selfloop transitions, 15 changer transitions 7/145 dead transitions. [2024-06-14 14:48:54,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 145 transitions, 1523 flow [2024-06-14 14:48:54,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:48:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:48:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 14:48:54,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 14:48:54,289 INFO L175 Difference]: Start difference. First operand has 208 places, 126 transitions, 1009 flow. Second operand 11 states and 130 transitions. [2024-06-14 14:48:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 145 transitions, 1523 flow [2024-06-14 14:48:54,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 145 transitions, 1463 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:48:54,405 INFO L231 Difference]: Finished difference. Result has 207 places, 124 transitions, 971 flow [2024-06-14 14:48:54,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=971, PETRI_PLACES=207, PETRI_TRANSITIONS=124} [2024-06-14 14:48:54,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-14 14:48:54,406 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 124 transitions, 971 flow [2024-06-14 14:48:54,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:54,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:54,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:54,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 14:48:54,406 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:54,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -785581922, now seen corresponding path program 11 times [2024-06-14 14:48:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22294489] [2024-06-14 14:48:54,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:54,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:48:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:48:58,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:48:58,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22294489] [2024-06-14 14:48:58,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22294489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:48:58,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:48:58,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:48:58,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034316141] [2024-06-14 14:48:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:48:58,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:48:58,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:48:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:48:58,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:48:58,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:48:58,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 124 transitions, 971 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:58,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:48:58,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:48:58,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:48:59,378 INFO L124 PetriNetUnfolderBase]: 322/698 cut-off events. [2024-06-14 14:48:59,378 INFO L125 PetriNetUnfolderBase]: For 55677/55677 co-relation queries the response was YES. [2024-06-14 14:48:59,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4264 conditions, 698 events. 322/698 cut-off events. For 55677/55677 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3799 event pairs, 84 based on Foata normal form. 6/704 useless extension candidates. Maximal degree in co-relation 4177. Up to 558 conditions per place. [2024-06-14 14:48:59,383 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 22 changer transitions 10/136 dead transitions. [2024-06-14 14:48:59,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 136 transitions, 1289 flow [2024-06-14 14:48:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:48:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:48:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 14:48:59,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-14 14:48:59,384 INFO L175 Difference]: Start difference. First operand has 207 places, 124 transitions, 971 flow. Second operand 11 states and 125 transitions. [2024-06-14 14:48:59,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 136 transitions, 1289 flow [2024-06-14 14:48:59,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 136 transitions, 1249 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 14:48:59,503 INFO L231 Difference]: Finished difference. Result has 204 places, 121 transitions, 961 flow [2024-06-14 14:48:59,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=204, PETRI_TRANSITIONS=121} [2024-06-14 14:48:59,504 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-14 14:48:59,504 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 121 transitions, 961 flow [2024-06-14 14:48:59,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:48:59,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:48:59,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:48:59,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 14:48:59,504 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:48:59,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:48:59,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1159108450, now seen corresponding path program 12 times [2024-06-14 14:48:59,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:48:59,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102322068] [2024-06-14 14:48:59,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:48:59,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:48:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:04,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:04,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102322068] [2024-06-14 14:49:04,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102322068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:04,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:04,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:49:04,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059202263] [2024-06-14 14:49:04,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:04,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:49:04,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:04,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:49:04,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:49:04,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:04,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 121 transitions, 961 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:04,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:04,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:04,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:04,725 INFO L124 PetriNetUnfolderBase]: 337/732 cut-off events. [2024-06-14 14:49:04,725 INFO L125 PetriNetUnfolderBase]: For 66848/66848 co-relation queries the response was YES. [2024-06-14 14:49:04,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4884 conditions, 732 events. 337/732 cut-off events. For 66848/66848 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4016 event pairs, 123 based on Foata normal form. 6/738 useless extension candidates. Maximal degree in co-relation 4799. Up to 507 conditions per place. [2024-06-14 14:49:04,731 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 15 changer transitions 9/140 dead transitions. [2024-06-14 14:49:04,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 140 transitions, 1461 flow [2024-06-14 14:49:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 14:49:04,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 14:49:04,731 INFO L175 Difference]: Start difference. First operand has 204 places, 121 transitions, 961 flow. Second operand 11 states and 133 transitions. [2024-06-14 14:49:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 140 transitions, 1461 flow [2024-06-14 14:49:04,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 140 transitions, 1405 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 14:49:04,868 INFO L231 Difference]: Finished difference. Result has 201 places, 118 transitions, 925 flow [2024-06-14 14:49:04,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=925, PETRI_PLACES=201, PETRI_TRANSITIONS=118} [2024-06-14 14:49:04,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-14 14:49:04,868 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 118 transitions, 925 flow [2024-06-14 14:49:04,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:04,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:04,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 14:49:04,868 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:04,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash -594502838, now seen corresponding path program 13 times [2024-06-14 14:49:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493825419] [2024-06-14 14:49:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:04,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:12,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:12,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493825419] [2024-06-14 14:49:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493825419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:12,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:12,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:12,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151467498] [2024-06-14 14:49:12,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:12,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:12,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:12,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:12,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:12,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 118 transitions, 925 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:12,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:12,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:12,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:12,569 INFO L124 PetriNetUnfolderBase]: 310/677 cut-off events. [2024-06-14 14:49:12,569 INFO L125 PetriNetUnfolderBase]: For 61428/61428 co-relation queries the response was YES. [2024-06-14 14:49:12,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 677 events. 310/677 cut-off events. For 61428/61428 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3649 event pairs, 118 based on Foata normal form. 14/691 useless extension candidates. Maximal degree in co-relation 3924. Up to 550 conditions per place. [2024-06-14 14:49:12,574 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 11 changer transitions 14/132 dead transitions. [2024-06-14 14:49:12,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 132 transitions, 1255 flow [2024-06-14 14:49:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 14:49:12,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-14 14:49:12,575 INFO L175 Difference]: Start difference. First operand has 201 places, 118 transitions, 925 flow. Second operand 11 states and 126 transitions. [2024-06-14 14:49:12,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 132 transitions, 1255 flow [2024-06-14 14:49:12,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 132 transitions, 1207 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 14:49:12,668 INFO L231 Difference]: Finished difference. Result has 197 places, 111 transitions, 852 flow [2024-06-14 14:49:12,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=852, PETRI_PLACES=197, PETRI_TRANSITIONS=111} [2024-06-14 14:49:12,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-14 14:49:12,668 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 111 transitions, 852 flow [2024-06-14 14:49:12,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:12,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:12,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:12,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 14:49:12,669 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:12,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:12,669 INFO L85 PathProgramCache]: Analyzing trace with hash -586220258, now seen corresponding path program 14 times [2024-06-14 14:49:12,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:12,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871439885] [2024-06-14 14:49:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:12,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:17,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:17,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871439885] [2024-06-14 14:49:17,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871439885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:17,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:17,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:17,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443806723] [2024-06-14 14:49:17,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:17,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:17,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:17,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 111 transitions, 852 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:17,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:17,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:17,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:17,962 INFO L124 PetriNetUnfolderBase]: 270/593 cut-off events. [2024-06-14 14:49:17,962 INFO L125 PetriNetUnfolderBase]: For 36861/36861 co-relation queries the response was YES. [2024-06-14 14:49:17,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3234 conditions, 593 events. 270/593 cut-off events. For 36861/36861 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3081 event pairs, 95 based on Foata normal form. 6/599 useless extension candidates. Maximal degree in co-relation 3153. Up to 507 conditions per place. [2024-06-14 14:49:17,966 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 8 changer transitions 14/125 dead transitions. [2024-06-14 14:49:17,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 125 transitions, 1152 flow [2024-06-14 14:49:17,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 14:49:17,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 14:49:17,967 INFO L175 Difference]: Start difference. First operand has 197 places, 111 transitions, 852 flow. Second operand 11 states and 121 transitions. [2024-06-14 14:49:17,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 125 transitions, 1152 flow [2024-06-14 14:49:18,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 125 transitions, 1116 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 14:49:18,036 INFO L231 Difference]: Finished difference. Result has 188 places, 106 transitions, 809 flow [2024-06-14 14:49:18,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=809, PETRI_PLACES=188, PETRI_TRANSITIONS=106} [2024-06-14 14:49:18,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-14 14:49:18,037 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 106 transitions, 809 flow [2024-06-14 14:49:18,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:18,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:18,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:18,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 14:49:18,037 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:18,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1627928286, now seen corresponding path program 15 times [2024-06-14 14:49:18,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:18,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274159095] [2024-06-14 14:49:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274159095] [2024-06-14 14:49:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274159095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:23,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146154278] [2024-06-14 14:49:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:23,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:23,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:23,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:23,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 106 transitions, 809 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:23,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:23,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:23,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:23,584 INFO L124 PetriNetUnfolderBase]: 265/578 cut-off events. [2024-06-14 14:49:23,584 INFO L125 PetriNetUnfolderBase]: For 34151/34151 co-relation queries the response was YES. [2024-06-14 14:49:23,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 578 events. 265/578 cut-off events. For 34151/34151 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2981 event pairs, 69 based on Foata normal form. 8/586 useless extension candidates. Maximal degree in co-relation 3035. Up to 386 conditions per place. [2024-06-14 14:49:23,588 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 34 changer transitions 14/120 dead transitions. [2024-06-14 14:49:23,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 120 transitions, 1111 flow [2024-06-14 14:49:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 14:49:23,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-14 14:49:23,589 INFO L175 Difference]: Start difference. First operand has 188 places, 106 transitions, 809 flow. Second operand 11 states and 134 transitions. [2024-06-14 14:49:23,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 120 transitions, 1111 flow [2024-06-14 14:49:23,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 120 transitions, 1074 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 14:49:23,657 INFO L231 Difference]: Finished difference. Result has 179 places, 100 transitions, 807 flow [2024-06-14 14:49:23,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=807, PETRI_PLACES=179, PETRI_TRANSITIONS=100} [2024-06-14 14:49:23,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 14:49:23,658 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 100 transitions, 807 flow [2024-06-14 14:49:23,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:23,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:23,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:23,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 14:49:23,658 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:23,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:23,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1634184396, now seen corresponding path program 16 times [2024-06-14 14:49:23,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:23,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555268904] [2024-06-14 14:49:23,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:23,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555268904] [2024-06-14 14:49:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555268904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609962207] [2024-06-14 14:49:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:31,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:31,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:31,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:31,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 100 transitions, 807 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:31,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:31,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:31,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:32,046 INFO L124 PetriNetUnfolderBase]: 253/562 cut-off events. [2024-06-14 14:49:32,046 INFO L125 PetriNetUnfolderBase]: For 30381/30381 co-relation queries the response was YES. [2024-06-14 14:49:32,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 562 events. 253/562 cut-off events. For 30381/30381 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2885 event pairs, 71 based on Foata normal form. 8/570 useless extension candidates. Maximal degree in co-relation 2912. Up to 376 conditions per place. [2024-06-14 14:49:32,050 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 32 changer transitions 8/114 dead transitions. [2024-06-14 14:49:32,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 114 transitions, 1093 flow [2024-06-14 14:49:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 14:49:32,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 14:49:32,052 INFO L175 Difference]: Start difference. First operand has 179 places, 100 transitions, 807 flow. Second operand 11 states and 132 transitions. [2024-06-14 14:49:32,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 114 transitions, 1093 flow [2024-06-14 14:49:32,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 114 transitions, 990 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 14:49:32,108 INFO L231 Difference]: Finished difference. Result has 171 places, 97 transitions, 762 flow [2024-06-14 14:49:32,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=762, PETRI_PLACES=171, PETRI_TRANSITIONS=97} [2024-06-14 14:49:32,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-14 14:49:32,108 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 97 transitions, 762 flow [2024-06-14 14:49:32,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:32,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:32,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 14:49:32,109 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:32,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1634423406, now seen corresponding path program 17 times [2024-06-14 14:49:32,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:32,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541330839] [2024-06-14 14:49:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:32,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:37,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:37,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541330839] [2024-06-14 14:49:37,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541330839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:37,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:37,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852639004] [2024-06-14 14:49:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:37,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:37,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:37,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:37,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:37,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:37,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 97 transitions, 762 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:37,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:37,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:38,085 INFO L124 PetriNetUnfolderBase]: 237/533 cut-off events. [2024-06-14 14:49:38,085 INFO L125 PetriNetUnfolderBase]: For 24751/24751 co-relation queries the response was YES. [2024-06-14 14:49:38,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675 conditions, 533 events. 237/533 cut-off events. For 24751/24751 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2689 event pairs, 67 based on Foata normal form. 6/539 useless extension candidates. Maximal degree in co-relation 2603. Up to 348 conditions per place. [2024-06-14 14:49:38,089 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 65 selfloop transitions, 30 changer transitions 10/108 dead transitions. [2024-06-14 14:49:38,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 108 transitions, 994 flow [2024-06-14 14:49:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:49:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:49:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 14:49:38,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 14:49:38,090 INFO L175 Difference]: Start difference. First operand has 171 places, 97 transitions, 762 flow. Second operand 11 states and 124 transitions. [2024-06-14 14:49:38,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 108 transitions, 994 flow [2024-06-14 14:49:38,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 108 transitions, 918 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 14:49:38,132 INFO L231 Difference]: Finished difference. Result has 169 places, 93 transitions, 713 flow [2024-06-14 14:49:38,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=713, PETRI_PLACES=169, PETRI_TRANSITIONS=93} [2024-06-14 14:49:38,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-14 14:49:38,133 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 93 transitions, 713 flow [2024-06-14 14:49:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:38,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:38,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:38,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 14:49:38,133 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:38,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -495555720, now seen corresponding path program 1 times [2024-06-14 14:49:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:38,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759634781] [2024-06-14 14:49:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:38,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759634781] [2024-06-14 14:49:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759634781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:45,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:45,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:45,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902581022] [2024-06-14 14:49:45,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:45,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:45,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:45,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:45,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:45,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 93 transitions, 713 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:45,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:45,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:46,118 INFO L124 PetriNetUnfolderBase]: 230/517 cut-off events. [2024-06-14 14:49:46,118 INFO L125 PetriNetUnfolderBase]: For 24265/24265 co-relation queries the response was YES. [2024-06-14 14:49:46,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2550 conditions, 517 events. 230/517 cut-off events. For 24265/24265 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2590 event pairs, 61 based on Foata normal form. 6/523 useless extension candidates. Maximal degree in co-relation 2479. Up to 418 conditions per place. [2024-06-14 14:49:46,121 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 15 changer transitions 11/111 dead transitions. [2024-06-14 14:49:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 111 transitions, 977 flow [2024-06-14 14:49:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:49:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:49:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 14:49:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-14 14:49:46,122 INFO L175 Difference]: Start difference. First operand has 169 places, 93 transitions, 713 flow. Second operand 12 states and 137 transitions. [2024-06-14 14:49:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 111 transitions, 977 flow [2024-06-14 14:49:46,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 111 transitions, 878 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 14:49:46,161 INFO L231 Difference]: Finished difference. Result has 165 places, 90 transitions, 626 flow [2024-06-14 14:49:46,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=626, PETRI_PLACES=165, PETRI_TRANSITIONS=90} [2024-06-14 14:49:46,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-14 14:49:46,162 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 90 transitions, 626 flow [2024-06-14 14:49:46,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:46,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:46,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:46,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 14:49:46,162 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:46,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1364641024, now seen corresponding path program 2 times [2024-06-14 14:49:46,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:46,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318515201] [2024-06-14 14:49:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:46,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:49:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:49:51,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:49:51,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318515201] [2024-06-14 14:49:51,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318515201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:49:51,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:49:51,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:49:51,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079485378] [2024-06-14 14:49:51,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:49:51,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:49:51,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:49:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:49:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:49:52,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:49:52,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 90 transitions, 626 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:52,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:49:52,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:49:52,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:49:52,465 INFO L124 PetriNetUnfolderBase]: 223/504 cut-off events. [2024-06-14 14:49:52,465 INFO L125 PetriNetUnfolderBase]: For 23099/23099 co-relation queries the response was YES. [2024-06-14 14:49:52,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 504 events. 223/504 cut-off events. For 23099/23099 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2493 event pairs, 57 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2298. Up to 396 conditions per place. [2024-06-14 14:49:52,468 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 10 changer transitions 16/108 dead transitions. [2024-06-14 14:49:52,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 108 transitions, 880 flow [2024-06-14 14:49:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:49:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:49:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 14:49:52,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-14 14:49:52,480 INFO L175 Difference]: Start difference. First operand has 165 places, 90 transitions, 626 flow. Second operand 12 states and 133 transitions. [2024-06-14 14:49:52,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 108 transitions, 880 flow [2024-06-14 14:49:52,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 108 transitions, 844 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 14:49:52,517 INFO L231 Difference]: Finished difference. Result has 163 places, 85 transitions, 566 flow [2024-06-14 14:49:52,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=566, PETRI_PLACES=163, PETRI_TRANSITIONS=85} [2024-06-14 14:49:52,518 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-14 14:49:52,518 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 85 transitions, 566 flow [2024-06-14 14:49:52,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:49:52,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:49:52,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:49:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 14:49:52,519 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:49:52,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:49:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash -364258070, now seen corresponding path program 3 times [2024-06-14 14:49:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:49:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555741169] [2024-06-14 14:49:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:49:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:49:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:01,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555741169] [2024-06-14 14:50:01,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555741169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:01,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:01,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:50:01,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645010863] [2024-06-14 14:50:01,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:01,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:50:01,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:50:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:50:01,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:01,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 85 transitions, 566 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:01,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:01,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:01,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:01,666 INFO L124 PetriNetUnfolderBase]: 208/473 cut-off events. [2024-06-14 14:50:01,666 INFO L125 PetriNetUnfolderBase]: For 23053/23053 co-relation queries the response was YES. [2024-06-14 14:50:01,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 473 events. 208/473 cut-off events. For 23053/23053 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2293 event pairs, 53 based on Foata normal form. 6/479 useless extension candidates. Maximal degree in co-relation 2159. Up to 368 conditions per place. [2024-06-14 14:50:01,669 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 13 changer transitions 11/104 dead transitions. [2024-06-14 14:50:01,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 104 transitions, 816 flow [2024-06-14 14:50:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:50:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:50:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 14:50:01,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-14 14:50:01,670 INFO L175 Difference]: Start difference. First operand has 163 places, 85 transitions, 566 flow. Second operand 12 states and 136 transitions. [2024-06-14 14:50:01,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 104 transitions, 816 flow [2024-06-14 14:50:01,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 104 transitions, 782 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 14:50:01,706 INFO L231 Difference]: Finished difference. Result has 156 places, 81 transitions, 527 flow [2024-06-14 14:50:01,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=527, PETRI_PLACES=156, PETRI_TRANSITIONS=81} [2024-06-14 14:50:01,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 14:50:01,706 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 81 transitions, 527 flow [2024-06-14 14:50:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:01,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:01,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 14:50:01,707 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:01,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash -164812130, now seen corresponding path program 4 times [2024-06-14 14:50:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188674369] [2024-06-14 14:50:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:08,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:08,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188674369] [2024-06-14 14:50:08,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188674369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:08,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:08,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:50:08,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657902884] [2024-06-14 14:50:08,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:08,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:50:08,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:08,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:50:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:50:08,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:08,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 81 transitions, 527 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:08,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:08,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:08,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:09,208 INFO L124 PetriNetUnfolderBase]: 182/417 cut-off events. [2024-06-14 14:50:09,208 INFO L125 PetriNetUnfolderBase]: For 16509/16509 co-relation queries the response was YES. [2024-06-14 14:50:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 417 events. 182/417 cut-off events. For 16509/16509 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1940 event pairs, 42 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1718. Up to 331 conditions per place. [2024-06-14 14:50:09,211 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 68 selfloop transitions, 6 changer transitions 22/99 dead transitions. [2024-06-14 14:50:09,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 99 transitions, 765 flow [2024-06-14 14:50:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 14:50:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 14:50:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-14 14:50:09,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-14 14:50:09,211 INFO L175 Difference]: Start difference. First operand has 156 places, 81 transitions, 527 flow. Second operand 12 states and 133 transitions. [2024-06-14 14:50:09,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 99 transitions, 765 flow [2024-06-14 14:50:09,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 99 transitions, 727 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 14:50:09,234 INFO L231 Difference]: Finished difference. Result has 151 places, 73 transitions, 444 flow [2024-06-14 14:50:09,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=444, PETRI_PLACES=151, PETRI_TRANSITIONS=73} [2024-06-14 14:50:09,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 14:50:09,234 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 73 transitions, 444 flow [2024-06-14 14:50:09,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:09,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:09,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 14:50:09,234 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:09,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1471331308, now seen corresponding path program 5 times [2024-06-14 14:50:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:09,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656021178] [2024-06-14 14:50:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656021178] [2024-06-14 14:50:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656021178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:15,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:15,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:50:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191776877] [2024-06-14 14:50:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:15,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:50:15,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:15,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:50:15,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:50:15,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:15,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 73 transitions, 444 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:15,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:15,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:15,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:16,173 INFO L124 PetriNetUnfolderBase]: 170/381 cut-off events. [2024-06-14 14:50:16,173 INFO L125 PetriNetUnfolderBase]: For 15661/15661 co-relation queries the response was YES. [2024-06-14 14:50:16,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1614 conditions, 381 events. 170/381 cut-off events. For 15661/15661 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1717 event pairs, 38 based on Foata normal form. 6/387 useless extension candidates. Maximal degree in co-relation 1551. Up to 294 conditions per place. [2024-06-14 14:50:16,175 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 62 selfloop transitions, 5 changer transitions 17/87 dead transitions. [2024-06-14 14:50:16,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 87 transitions, 648 flow [2024-06-14 14:50:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:50:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:50:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 14:50:16,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-14 14:50:16,176 INFO L175 Difference]: Start difference. First operand has 151 places, 73 transitions, 444 flow. Second operand 10 states and 112 transitions. [2024-06-14 14:50:16,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 87 transitions, 648 flow [2024-06-14 14:50:16,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 87 transitions, 610 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 14:50:16,197 INFO L231 Difference]: Finished difference. Result has 135 places, 67 transitions, 390 flow [2024-06-14 14:50:16,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=135, PETRI_TRANSITIONS=67} [2024-06-14 14:50:16,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-14 14:50:16,198 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 67 transitions, 390 flow [2024-06-14 14:50:16,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:16,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:16,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:16,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 14:50:16,198 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:16,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1451249428, now seen corresponding path program 6 times [2024-06-14 14:50:16,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:16,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244001597] [2024-06-14 14:50:16,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:16,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:22,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244001597] [2024-06-14 14:50:22,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244001597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:22,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:22,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:50:22,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998737646] [2024-06-14 14:50:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:22,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:50:22,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:50:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:50:22,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:22,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 67 transitions, 390 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:22,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:22,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:22,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:23,127 INFO L124 PetriNetUnfolderBase]: 153/344 cut-off events. [2024-06-14 14:50:23,127 INFO L125 PetriNetUnfolderBase]: For 15629/15629 co-relation queries the response was YES. [2024-06-14 14:50:23,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 344 events. 153/344 cut-off events. For 15629/15629 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1516 event pairs, 38 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1420. Up to 257 conditions per place. [2024-06-14 14:50:23,129 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 13 changer transitions 10/80 dead transitions. [2024-06-14 14:50:23,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 80 transitions, 576 flow [2024-06-14 14:50:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:50:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:50:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-14 14:50:23,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-14 14:50:23,130 INFO L175 Difference]: Start difference. First operand has 135 places, 67 transitions, 390 flow. Second operand 11 states and 122 transitions. [2024-06-14 14:50:23,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 80 transitions, 576 flow [2024-06-14 14:50:23,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 80 transitions, 554 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 14:50:23,144 INFO L231 Difference]: Finished difference. Result has 126 places, 64 transitions, 383 flow [2024-06-14 14:50:23,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=126, PETRI_TRANSITIONS=64} [2024-06-14 14:50:23,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-14 14:50:23,145 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 64 transitions, 383 flow [2024-06-14 14:50:23,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:23,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:23,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 14:50:23,146 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:23,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1207122476, now seen corresponding path program 7 times [2024-06-14 14:50:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345132466] [2024-06-14 14:50:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:29,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:29,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:29,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345132466] [2024-06-14 14:50:29,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345132466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:29,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:29,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:50:29,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053923653] [2024-06-14 14:50:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:29,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:50:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:29,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:50:29,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:50:29,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:29,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 64 transitions, 383 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:29,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:29,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:29,839 INFO L124 PetriNetUnfolderBase]: 146/331 cut-off events. [2024-06-14 14:50:29,839 INFO L125 PetriNetUnfolderBase]: For 12188/12190 co-relation queries the response was YES. [2024-06-14 14:50:29,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 331 events. 146/331 cut-off events. For 12188/12190 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1437 event pairs, 34 based on Foata normal form. 8/339 useless extension candidates. Maximal degree in co-relation 1340. Up to 233 conditions per place. [2024-06-14 14:50:29,840 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 12 changer transitions 10/78 dead transitions. [2024-06-14 14:50:29,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 78 transitions, 567 flow [2024-06-14 14:50:29,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:50:29,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:50:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:50:29,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-14 14:50:29,841 INFO L175 Difference]: Start difference. First operand has 126 places, 64 transitions, 383 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:50:29,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 78 transitions, 567 flow [2024-06-14 14:50:29,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 78 transitions, 535 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:50:29,854 INFO L231 Difference]: Finished difference. Result has 122 places, 60 transitions, 358 flow [2024-06-14 14:50:29,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=358, PETRI_PLACES=122, PETRI_TRANSITIONS=60} [2024-06-14 14:50:29,855 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-14 14:50:29,855 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 60 transitions, 358 flow [2024-06-14 14:50:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:29,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:29,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:29,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 14:50:29,855 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:29,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1041815120, now seen corresponding path program 8 times [2024-06-14 14:50:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545136885] [2024-06-14 14:50:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:50:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:50:37,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:50:37,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545136885] [2024-06-14 14:50:37,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545136885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:50:37,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:50:37,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 14:50:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779170018] [2024-06-14 14:50:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:50:37,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:50:37,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:50:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:50:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:50:37,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 14:50:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 60 transitions, 358 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:50:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 14:50:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:50:37,829 INFO L124 PetriNetUnfolderBase]: 135/308 cut-off events. [2024-06-14 14:50:37,829 INFO L125 PetriNetUnfolderBase]: For 10855/10857 co-relation queries the response was YES. [2024-06-14 14:50:37,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1306 conditions, 308 events. 135/308 cut-off events. For 10855/10857 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1301 event pairs, 36 based on Foata normal form. 8/316 useless extension candidates. Maximal degree in co-relation 1256. Up to 229 conditions per place. [2024-06-14 14:50:37,831 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 49 selfloop transitions, 9 changer transitions 12/73 dead transitions. [2024-06-14 14:50:37,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 73 transitions, 530 flow [2024-06-14 14:50:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:50:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:50:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 14:50:37,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 14:50:37,832 INFO L175 Difference]: Start difference. First operand has 122 places, 60 transitions, 358 flow. Second operand 11 states and 120 transitions. [2024-06-14 14:50:37,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 73 transitions, 530 flow [2024-06-14 14:50:37,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 73 transitions, 498 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 14:50:37,844 INFO L231 Difference]: Finished difference. Result has 116 places, 55 transitions, 321 flow [2024-06-14 14:50:37,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=321, PETRI_PLACES=116, PETRI_TRANSITIONS=55} [2024-06-14 14:50:37,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-14 14:50:37,844 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 55 transitions, 321 flow [2024-06-14 14:50:37,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:50:37,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:50:37,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:50:37,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 14:50:37,844 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:50:37,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:50:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1990800364, now seen corresponding path program 9 times [2024-06-14 14:50:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:50:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323442224] [2024-06-14 14:50:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:50:37,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:50:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15