./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.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/rfi003_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/rfi003_tso.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi003_tso.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-76401ed-m [2024-06-20 17:45:19,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 17:45:19,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 17:45:19,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 17:45:19,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 17:45:19,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 17:45:19,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 17:45:19,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 17:45:19,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 17:45:19,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 17:45:19,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 17:45:19,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 17:45:19,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 17:45:19,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 17:45:19,991 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 17:45:19,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 17:45:19,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 17:45:19,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 17:45:19,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 17:45:19,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 17:45:19,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 17:45:19,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 17:45:19,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 17:45:19,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 17:45:19,995 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 17:45:19,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 17:45:19,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 17:45:19,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 17:45:19,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 17:45:19,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 17:45:19,997 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 17:45:19,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 17:45:19,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:45:19,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 17:45:19,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 17:45:19,999 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 17:45:20,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 17:45:20,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 17:45:20,000 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 17:45:20,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 17:45:20,001 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 17:45:20,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 17:45:20,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 17:45:20,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 17:45:20,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 17:45:20,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 17:45:20,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 17:45:20,285 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 17:45:20,286 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 17:45:20,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/rfi003_tso.yml/witness.yml [2024-06-20 17:45:20,521 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 17:45:20,522 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 17:45:20,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-20 17:45:21,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 17:45:21,976 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 17:45:21,977 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2024-06-20 17:45:21,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3c04bce/5cb234b3718046f1bdef054735a8b485/FLAG59bfe353d [2024-06-20 17:45:22,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c3c04bce/5cb234b3718046f1bdef054735a8b485 [2024-06-20 17:45:22,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 17:45:22,004 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 17:45:22,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 17:45:22,006 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 17:45:22,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 17:45:22,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:45:20" (1/2) ... [2024-06-20 17:45:22,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b45b681 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:45:22, skipping insertion in model container [2024-06-20 17:45:22,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:45:20" (1/2) ... [2024-06-20 17:45:22,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1818600a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:45:22, skipping insertion in model container [2024-06-20 17:45:22,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:45:22" (2/2) ... [2024-06-20 17:45:22,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b45b681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22, skipping insertion in model container [2024-06-20 17:45:22,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:45:22" (2/2) ... [2024-06-20 17:45:22,013 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 17:45:22,088 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 17:45:22,089 INFO L97 edCorrectnessWitness]: Location invariant before [L838-L838] ((((((((((((((((! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$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 )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$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 )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$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 )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$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 )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x <= 1) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-20 17:45:22,089 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 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 )__unbuffered_p1_EBX >= 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 )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd1 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$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 )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd1) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd1) - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd1 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd1 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p1_EAX <= 127) && __unbuffered_p1_EBX <= 127) && x <= 1) && y <= 127) && y$mem_tmp <= 127) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-20 17:45:22,090 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 17:45:22,090 INFO L106 edCorrectnessWitness]: ghost_update [L836-L836] multithreaded = 1; [2024-06-20 17:45:22,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 17:45:22,569 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:45:22,586 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 17:45:22,856 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:45:22,891 INFO L206 MainTranslator]: Completed translation [2024-06-20 17:45:22,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22 WrapperNode [2024-06-20 17:45:22,892 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 17:45:22,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 17:45:22,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 17:45:22,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 17:45:22,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:22,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,007 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 177 [2024-06-20 17:45:23,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 17:45:23,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 17:45:23,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 17:45:23,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 17:45:23,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,037 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,087 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]. [2024-06-20 17:45:23,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,115 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,123 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 17:45:23,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 17:45:23,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 17:45:23,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 17:45:23,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (1/1) ... [2024-06-20 17:45:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:45:23,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:45:23,183 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) [2024-06-20 17:45:23,188 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 [2024-06-20 17:45:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 17:45:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 17:45:23,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 17:45:23,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 17:45:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 17:45:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 17:45:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 17:45:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 17:45:23,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 17:45:23,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 17:45:23,228 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 17:45:23,342 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 17:45:23,344 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 17:45:24,120 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 17:45:24,121 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 17:45:24,390 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 17:45:24,390 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 17:45:24,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:45:24 BoogieIcfgContainer [2024-06-20 17:45:24,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 17:45:24,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 17:45:24,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 17:45:24,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 17:45:24,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:45:20" (1/4) ... [2024-06-20 17:45:24,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b3d5f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:45:24, skipping insertion in model container [2024-06-20 17:45:24,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 05:45:22" (2/4) ... [2024-06-20 17:45:24,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b3d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 05:45:24, skipping insertion in model container [2024-06-20 17:45:24,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:45:22" (3/4) ... [2024-06-20 17:45:24,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@305b3d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 05:45:24, skipping insertion in model container [2024-06-20 17:45:24,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:45:24" (4/4) ... [2024-06-20 17:45:24,408 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2024-06-20 17:45:24,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 17:45:24,425 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 17:45:24,425 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 17:45:24,524 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 17:45:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-20 17:45:24,603 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-20 17:45:24,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:45:24,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 17:45:24,606 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-20 17:45:24,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-20 17:45:24,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 17:45:24,660 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;@47d77b94, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 17:45:24,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 17:45:24,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 17:45:24,684 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 17:45:24,684 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:45:24,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:24,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 17:45:24,686 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)] === [2024-06-20 17:45:24,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash 410284939, now seen corresponding path program 1 times [2024-06-20 17:45:24,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90724179] [2024-06-20 17:45:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:24,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:28,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:28,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90724179] [2024-06-20 17:45:28,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90724179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:28,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:28,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 17:45:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007325561] [2024-06-20 17:45:28,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:28,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 17:45:28,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 17:45:28,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 17:45:28,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 17:45:28,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:28,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:28,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 17:45:28,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:28,854 INFO L124 PetriNetUnfolderBase]: 216/391 cut-off events. [2024-06-20 17:45:28,855 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 17:45:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 391 events. 216/391 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1471 event pairs, 133 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2024-06-20 17:45:28,862 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 23 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-20 17:45:28,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 121 flow [2024-06-20 17:45:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 17:45:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 17:45:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-20 17:45:28,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-20 17:45:28,875 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 52 transitions. [2024-06-20 17:45:28,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 121 flow [2024-06-20 17:45:28,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 17:45:28,880 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-20 17:45:28,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-20 17:45:28,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-20 17:45:28,886 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-20 17:45:28,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:28,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:28,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:28,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 17:45:28,887 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)] === [2024-06-20 17:45:28,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash -853149910, now seen corresponding path program 1 times [2024-06-20 17:45:28,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:28,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882472173] [2024-06-20 17:45:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:31,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:31,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882472173] [2024-06-20 17:45:31,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882472173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:31,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:31,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 17:45:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514283761] [2024-06-20 17:45:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:31,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 17:45:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 17:45:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 17:45:31,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-20 17:45:31,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:31,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:31,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-20 17:45:31,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:31,889 INFO L124 PetriNetUnfolderBase]: 207/376 cut-off events. [2024-06-20 17:45:31,890 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-06-20 17:45:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 376 events. 207/376 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1426 event pairs, 76 based on Foata normal form. 6/381 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2024-06-20 17:45:31,895 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-20 17:45:31,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 171 flow [2024-06-20 17:45:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 17:45:31,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 17:45:31,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-20 17:45:31,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-20 17:45:31,901 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 68 transitions. [2024-06-20 17:45:31,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 171 flow [2024-06-20 17:45:31,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 17:45:31,905 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-20 17:45:31,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-20 17:45:31,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-20 17:45:31,906 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-20 17:45:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:31,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:31,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:31,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 17:45:31,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 17:45:31,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1413365843, now seen corresponding path program 1 times [2024-06-20 17:45:31,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:31,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814999886] [2024-06-20 17:45:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:31,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814999886] [2024-06-20 17:45:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814999886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:36,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:36,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 17:45:36,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171677045] [2024-06-20 17:45:36,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 17:45:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 17:45:36,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-20 17:45:36,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:45:36,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:36,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:36,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:45:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:37,292 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-20 17:45:37,293 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-20 17:45:37,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 432 events. 243/432 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1578 event pairs, 144 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1075. Up to 421 conditions per place. [2024-06-20 17:45:37,296 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 27 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-20 17:45:37,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 181 flow [2024-06-20 17:45:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 17:45:37,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 17:45:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-20 17:45:37,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 17:45:37,298 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 57 transitions. [2024-06-20 17:45:37,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 181 flow [2024-06-20 17:45:37,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 172 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 17:45:37,300 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-20 17:45:37,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-20 17:45:37,301 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-20 17:45:37,301 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-20 17:45:37,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:37,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:37,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:37,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 17:45:37,302 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)] === [2024-06-20 17:45:37,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:37,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1318769256, now seen corresponding path program 1 times [2024-06-20 17:45:37,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:37,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662030886] [2024-06-20 17:45:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:41,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662030886] [2024-06-20 17:45:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662030886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:41,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:41,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 17:45:41,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34874335] [2024-06-20 17:45:41,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:41,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 17:45:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:41,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 17:45:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 17:45:41,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-20 17:45:41,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2024-06-20 17:45:41,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:41,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-20 17:45:41,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:41,915 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-20 17:45:41,915 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-20 17:45:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 424 events. 239/424 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1486 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1123. Up to 362 conditions per place. [2024-06-20 17:45:41,920 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-20 17:45:41,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 241 flow [2024-06-20 17:45:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:45:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:45:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-20 17:45:41,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-20 17:45:41,925 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 86 transitions. [2024-06-20 17:45:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 241 flow [2024-06-20 17:45:41,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 230 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 17:45:41,928 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-20 17:45:41,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-20 17:45:41,930 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-20 17:45:41,930 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-20 17:45:41,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2024-06-20 17:45:41,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:41,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 17:45:41,931 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)] === [2024-06-20 17:45:41,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash 864669008, now seen corresponding path program 1 times [2024-06-20 17:45:41,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:41,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581023984] [2024-06-20 17:45:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:45,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581023984] [2024-06-20 17:45:45,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581023984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:45,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 17:45:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284254181] [2024-06-20 17:45:45,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:45,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 17:45:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:45,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 17:45:45,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-20 17:45:46,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:45:46,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:46,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:46,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:45:46,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:46,438 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-20 17:45:46,439 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-06-20 17:45:46,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 421 events. 237/421 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1480 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1211. Up to 407 conditions per place. [2024-06-20 17:45:46,443 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-20 17:45:46,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 225 flow [2024-06-20 17:45:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:45:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:45:46,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-20 17:45:46,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 17:45:46,446 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 64 transitions. [2024-06-20 17:45:46,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 225 flow [2024-06-20 17:45:46,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 209 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 17:45:46,452 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-20 17:45:46,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-20 17:45:46,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-20 17:45:46,459 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-20 17:45:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:46,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:46,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 17:45:46,461 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)] === [2024-06-20 17:45:46,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1228321980, now seen corresponding path program 1 times [2024-06-20 17:45:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:46,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979454555] [2024-06-20 17:45:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:50,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:50,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979454555] [2024-06-20 17:45:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979454555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:50,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 17:45:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735543198] [2024-06-20 17:45:50,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 17:45:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 17:45:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 17:45:51,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:45:51,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:51,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:51,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:45:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:51,450 INFO L124 PetriNetUnfolderBase]: 243/431 cut-off events. [2024-06-20 17:45:51,450 INFO L125 PetriNetUnfolderBase]: For 830/830 co-relation queries the response was YES. [2024-06-20 17:45:51,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 431 events. 243/431 cut-off events. For 830/830 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1544 event pairs, 82 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 1309. Up to 385 conditions per place. [2024-06-20 17:45:51,456 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-20 17:45:51,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 294 flow [2024-06-20 17:45:51,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:45:51,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:45:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2024-06-20 17:45:51,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 17:45:51,458 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 72 transitions. [2024-06-20 17:45:51,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 294 flow [2024-06-20 17:45:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 277 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 17:45:51,460 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 176 flow [2024-06-20 17:45:51,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-20 17:45:51,461 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-20 17:45:51,461 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 176 flow [2024-06-20 17:45:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:51,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:51,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 17:45:51,462 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)] === [2024-06-20 17:45:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1059605890, now seen corresponding path program 2 times [2024-06-20 17:45:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899502000] [2024-06-20 17:45:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:45:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:45:55,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:45:55,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899502000] [2024-06-20 17:45:55,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899502000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:45:55,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:45:55,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 17:45:55,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101019760] [2024-06-20 17:45:55,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:45:55,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 17:45:55,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:45:55,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 17:45:55,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-20 17:45:55,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:45:55,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:55,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:45:55,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:45:55,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:45:55,995 INFO L124 PetriNetUnfolderBase]: 239/426 cut-off events. [2024-06-20 17:45:55,995 INFO L125 PetriNetUnfolderBase]: For 1129/1129 co-relation queries the response was YES. [2024-06-20 17:45:55,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 426 events. 239/426 cut-off events. For 1129/1129 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1508 event pairs, 88 based on Foata normal form. 2/426 useless extension candidates. Maximal degree in co-relation 1379. Up to 382 conditions per place. [2024-06-20 17:45:55,999 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-20 17:45:55,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 284 flow [2024-06-20 17:45:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 17:45:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 17:45:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-20 17:45:56,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-20 17:45:56,001 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 176 flow. Second operand 6 states and 69 transitions. [2024-06-20 17:45:56,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 284 flow [2024-06-20 17:45:56,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 270 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-20 17:45:56,003 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 189 flow [2024-06-20 17:45:56,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2024-06-20 17:45:56,004 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-20 17:45:56,005 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 189 flow [2024-06-20 17:45:56,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:45:56,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:45:56,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:45:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 17:45:56,005 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)] === [2024-06-20 17:45:56,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:45:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1034936338, now seen corresponding path program 1 times [2024-06-20 17:45:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:45:56,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19000924] [2024-06-20 17:45:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:45:56,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:45:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:00,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19000924] [2024-06-20 17:46:00,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19000924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:00,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:00,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655445509] [2024-06-20 17:46:00,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:00,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:00,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:00,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:00,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:00,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:00,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 189 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:00,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:00,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:00,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:00,689 INFO L124 PetriNetUnfolderBase]: 237/422 cut-off events. [2024-06-20 17:46:00,690 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-20 17:46:00,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435 conditions, 422 events. 237/422 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1503 event pairs, 99 based on Foata normal form. 1/422 useless extension candidates. Maximal degree in co-relation 1412. Up to 405 conditions per place. [2024-06-20 17:46:00,693 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 34 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-20 17:46:00,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 303 flow [2024-06-20 17:46:00,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:00,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:00,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-20 17:46:00,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-20 17:46:00,695 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 189 flow. Second operand 7 states and 72 transitions. [2024-06-20 17:46:00,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 303 flow [2024-06-20 17:46:00,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 273 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:00,698 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 198 flow [2024-06-20 17:46:00,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-20 17:46:00,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-20 17:46:00,700 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 198 flow [2024-06-20 17:46:00,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:00,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:00,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:00,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 17:46:00,701 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)] === [2024-06-20 17:46:00,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash 955424733, now seen corresponding path program 1 times [2024-06-20 17:46:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018861707] [2024-06-20 17:46:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:04,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018861707] [2024-06-20 17:46:04,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018861707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:04,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:04,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761627063] [2024-06-20 17:46:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:04,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:04,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:04,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:04,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:04,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:04,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:04,722 INFO L124 PetriNetUnfolderBase]: 243/433 cut-off events. [2024-06-20 17:46:04,722 INFO L125 PetriNetUnfolderBase]: For 1686/1686 co-relation queries the response was YES. [2024-06-20 17:46:04,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 433 events. 243/433 cut-off events. For 1686/1686 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1543 event pairs, 85 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 1493. Up to 383 conditions per place. [2024-06-20 17:46:04,726 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-20 17:46:04,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 362 flow [2024-06-20 17:46:04,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:04,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-20 17:46:04,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35267857142857145 [2024-06-20 17:46:04,727 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 198 flow. Second operand 7 states and 79 transitions. [2024-06-20 17:46:04,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 362 flow [2024-06-20 17:46:04,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 339 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 17:46:04,733 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 260 flow [2024-06-20 17:46:04,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=260, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-06-20 17:46:04,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-20 17:46:04,734 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 260 flow [2024-06-20 17:46:04,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:04,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:04,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:04,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 17:46:04,735 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)] === [2024-06-20 17:46:04,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1511954943, now seen corresponding path program 2 times [2024-06-20 17:46:04,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294516270] [2024-06-20 17:46:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:04,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294516270] [2024-06-20 17:46:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294516270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:07,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615619615] [2024-06-20 17:46:07,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:07,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:07,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:07,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:07,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 260 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:07,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:07,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:07,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:08,318 INFO L124 PetriNetUnfolderBase]: 249/443 cut-off events. [2024-06-20 17:46:08,319 INFO L125 PetriNetUnfolderBase]: For 2169/2171 co-relation queries the response was YES. [2024-06-20 17:46:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1718 conditions, 443 events. 249/443 cut-off events. For 2169/2171 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1574 event pairs, 86 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 1692. Up to 393 conditions per place. [2024-06-20 17:46:08,322 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-20 17:46:08,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 409 flow [2024-06-20 17:46:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-20 17:46:08,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 17:46:08,324 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 260 flow. Second operand 7 states and 77 transitions. [2024-06-20 17:46:08,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 409 flow [2024-06-20 17:46:08,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 393 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-20 17:46:08,328 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 309 flow [2024-06-20 17:46:08,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-20 17:46:08,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-20 17:46:08,330 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 309 flow [2024-06-20 17:46:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:08,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:08,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:08,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 17:46:08,331 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)] === [2024-06-20 17:46:08,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:08,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1162345083, now seen corresponding path program 3 times [2024-06-20 17:46:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:08,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112418638] [2024-06-20 17:46:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112418638] [2024-06-20 17:46:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112418638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608720711] [2024-06-20 17:46:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:11,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:11,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 309 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:11,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:11,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:11,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:11,894 INFO L124 PetriNetUnfolderBase]: 250/445 cut-off events. [2024-06-20 17:46:11,895 INFO L125 PetriNetUnfolderBase]: For 2655/2657 co-relation queries the response was YES. [2024-06-20 17:46:11,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 445 events. 250/445 cut-off events. For 2655/2657 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1596 event pairs, 85 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 1794. Up to 374 conditions per place. [2024-06-20 17:46:11,898 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 23 changer transitions 0/63 dead transitions. [2024-06-20 17:46:11,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 513 flow [2024-06-20 17:46:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-20 17:46:11,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-20 17:46:11,900 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 309 flow. Second operand 7 states and 80 transitions. [2024-06-20 17:46:11,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 513 flow [2024-06-20 17:46:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 488 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 17:46:11,904 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 371 flow [2024-06-20 17:46:11,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-20 17:46:11,905 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-20 17:46:11,905 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 371 flow [2024-06-20 17:46:11,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:11,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:11,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:11,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 17:46:11,906 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)] === [2024-06-20 17:46:11,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1162355003, now seen corresponding path program 1 times [2024-06-20 17:46:11,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:11,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858488657] [2024-06-20 17:46:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:11,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858488657] [2024-06-20 17:46:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858488657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045995735] [2024-06-20 17:46:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:19,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:19,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 371 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:19,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:19,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:19,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:19,674 INFO L124 PetriNetUnfolderBase]: 248/441 cut-off events. [2024-06-20 17:46:19,674 INFO L125 PetriNetUnfolderBase]: For 3043/3043 co-relation queries the response was YES. [2024-06-20 17:46:19,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 441 events. 248/441 cut-off events. For 3043/3043 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1577 event pairs, 77 based on Foata normal form. 1/441 useless extension candidates. Maximal degree in co-relation 1866. Up to 421 conditions per place. [2024-06-20 17:46:19,677 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-20 17:46:19,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 63 transitions, 523 flow [2024-06-20 17:46:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:46:19,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:46:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-20 17:46:19,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-20 17:46:19,678 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 371 flow. Second operand 8 states and 80 transitions. [2024-06-20 17:46:19,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 63 transitions, 523 flow [2024-06-20 17:46:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 492 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 17:46:19,684 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 385 flow [2024-06-20 17:46:19,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-06-20 17:46:19,684 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-20 17:46:19,684 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 385 flow [2024-06-20 17:46:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:19,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:19,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:19,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 17:46:19,685 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)] === [2024-06-20 17:46:19,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:19,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1338483547, now seen corresponding path program 1 times [2024-06-20 17:46:19,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:19,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033407854] [2024-06-20 17:46:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:19,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:23,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033407854] [2024-06-20 17:46:23,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033407854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:23,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:23,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429853241] [2024-06-20 17:46:23,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:23,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:23,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:23,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:23,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:23,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:23,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:23,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:23,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:24,038 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-20 17:46:24,038 INFO L125 PetriNetUnfolderBase]: For 3514/3514 co-relation queries the response was YES. [2024-06-20 17:46:24,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 451 events. 254/451 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1627 event pairs, 55 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 1965. Up to 399 conditions per place. [2024-06-20 17:46:24,042 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-20 17:46:24,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 571 flow [2024-06-20 17:46:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-20 17:46:24,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-20 17:46:24,043 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 385 flow. Second operand 7 states and 81 transitions. [2024-06-20 17:46:24,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 571 flow [2024-06-20 17:46:24,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 542 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:24,048 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 397 flow [2024-06-20 17:46:24,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2024-06-20 17:46:24,049 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-20 17:46:24,049 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 397 flow [2024-06-20 17:46:24,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:24,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:24,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:24,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 17:46:24,050 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)] === [2024-06-20 17:46:24,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash 693961797, now seen corresponding path program 2 times [2024-06-20 17:46:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061042261] [2024-06-20 17:46:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:27,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061042261] [2024-06-20 17:46:27,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061042261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:27,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:27,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:27,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523930502] [2024-06-20 17:46:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:27,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:27,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:27,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 397 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:27,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:27,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:27,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:28,163 INFO L124 PetriNetUnfolderBase]: 260/461 cut-off events. [2024-06-20 17:46:28,163 INFO L125 PetriNetUnfolderBase]: For 4133/4133 co-relation queries the response was YES. [2024-06-20 17:46:28,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 461 events. 260/461 cut-off events. For 4133/4133 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1672 event pairs, 56 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2084. Up to 377 conditions per place. [2024-06-20 17:46:28,167 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 53 selfloop transitions, 20 changer transitions 0/75 dead transitions. [2024-06-20 17:46:28,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 629 flow [2024-06-20 17:46:28,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 17:46:28,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3794642857142857 [2024-06-20 17:46:28,169 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 397 flow. Second operand 7 states and 85 transitions. [2024-06-20 17:46:28,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 629 flow [2024-06-20 17:46:28,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 604 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 17:46:28,175 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 449 flow [2024-06-20 17:46:28,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-20 17:46:28,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-20 17:46:28,176 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 449 flow [2024-06-20 17:46:28,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:28,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:28,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:28,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 17:46:28,177 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)] === [2024-06-20 17:46:28,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:28,179 INFO L85 PathProgramCache]: Analyzing trace with hash 698430633, now seen corresponding path program 1 times [2024-06-20 17:46:28,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210281318] [2024-06-20 17:46:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:28,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:31,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:31,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210281318] [2024-06-20 17:46:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210281318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:31,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:31,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006040501] [2024-06-20 17:46:31,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:31,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:31,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:31,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:31,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 449 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:31,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:31,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:31,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:32,015 INFO L124 PetriNetUnfolderBase]: 263/466 cut-off events. [2024-06-20 17:46:32,016 INFO L125 PetriNetUnfolderBase]: For 4743/4743 co-relation queries the response was YES. [2024-06-20 17:46:32,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 466 events. 263/466 cut-off events. For 4743/4743 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1702 event pairs, 75 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2196. Up to 414 conditions per place. [2024-06-20 17:46:32,020 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 54 selfloop transitions, 18 changer transitions 0/74 dead transitions. [2024-06-20 17:46:32,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 641 flow [2024-06-20 17:46:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-20 17:46:32,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-20 17:46:32,021 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 449 flow. Second operand 7 states and 80 transitions. [2024-06-20 17:46:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 641 flow [2024-06-20 17:46:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 617 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-20 17:46:32,028 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 491 flow [2024-06-20 17:46:32,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-06-20 17:46:32,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-20 17:46:32,029 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 491 flow [2024-06-20 17:46:32,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:32,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:32,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:32,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 17:46:32,030 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)] === [2024-06-20 17:46:32,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:32,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2095046061, now seen corresponding path program 1 times [2024-06-20 17:46:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:32,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622142109] [2024-06-20 17:46:32,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:32,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622142109] [2024-06-20 17:46:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622142109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:35,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:35,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:35,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805646355] [2024-06-20 17:46:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:35,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:46:35,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 491 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:35,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:35,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:46:35,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:35,946 INFO L124 PetriNetUnfolderBase]: 269/477 cut-off events. [2024-06-20 17:46:35,946 INFO L125 PetriNetUnfolderBase]: For 5470/5470 co-relation queries the response was YES. [2024-06-20 17:46:35,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 477 events. 269/477 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1750 event pairs, 80 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2307. Up to 419 conditions per place. [2024-06-20 17:46:35,950 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2024-06-20 17:46:35,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 695 flow [2024-06-20 17:46:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:46:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:46:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-20 17:46:35,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 17:46:35,952 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 491 flow. Second operand 8 states and 96 transitions. [2024-06-20 17:46:35,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 695 flow [2024-06-20 17:46:35,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 659 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 17:46:35,960 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 518 flow [2024-06-20 17:46:35,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=518, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-20 17:46:35,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-20 17:46:35,960 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 518 flow [2024-06-20 17:46:35,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:35,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:35,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:35,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 17:46:35,961 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)] === [2024-06-20 17:46:35,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:35,962 INFO L85 PathProgramCache]: Analyzing trace with hash -143798201, now seen corresponding path program 2 times [2024-06-20 17:46:35,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:35,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162434544] [2024-06-20 17:46:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:35,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:39,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162434544] [2024-06-20 17:46:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162434544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793913488] [2024-06-20 17:46:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:39,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:46:39,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 518 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:39,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:39,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:46:39,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:39,525 INFO L124 PetriNetUnfolderBase]: 275/486 cut-off events. [2024-06-20 17:46:39,525 INFO L125 PetriNetUnfolderBase]: For 6148/6148 co-relation queries the response was YES. [2024-06-20 17:46:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 486 events. 275/486 cut-off events. For 6148/6148 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1785 event pairs, 75 based on Foata normal form. 2/487 useless extension candidates. Maximal degree in co-relation 2436. Up to 463 conditions per place. [2024-06-20 17:46:39,528 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 62 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-20 17:46:39,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 708 flow [2024-06-20 17:46:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:46:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:46:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 17:46:39,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-20 17:46:39,530 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 518 flow. Second operand 8 states and 89 transitions. [2024-06-20 17:46:39,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 708 flow [2024-06-20 17:46:39,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 661 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:39,537 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 522 flow [2024-06-20 17:46:39,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=522, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-20 17:46:39,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-20 17:46:39,538 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 522 flow [2024-06-20 17:46:39,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:39,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:39,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 17:46:39,539 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)] === [2024-06-20 17:46:39,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1867144911, now seen corresponding path program 3 times [2024-06-20 17:46:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835486068] [2024-06-20 17:46:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:42,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:42,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835486068] [2024-06-20 17:46:42,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835486068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:42,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:42,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721101118] [2024-06-20 17:46:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:42,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:43,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:43,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 522 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:43,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:43,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:43,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:43,408 INFO L124 PetriNetUnfolderBase]: 281/497 cut-off events. [2024-06-20 17:46:43,409 INFO L125 PetriNetUnfolderBase]: For 6899/6901 co-relation queries the response was YES. [2024-06-20 17:46:43,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2572 conditions, 497 events. 281/497 cut-off events. For 6899/6901 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1855 event pairs, 83 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 2534. Up to 439 conditions per place. [2024-06-20 17:46:43,414 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 58 selfloop transitions, 19 changer transitions 0/79 dead transitions. [2024-06-20 17:46:43,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 79 transitions, 728 flow [2024-06-20 17:46:43,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:46:43,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:46:43,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-20 17:46:43,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-20 17:46:43,415 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 522 flow. Second operand 8 states and 86 transitions. [2024-06-20 17:46:43,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 79 transitions, 728 flow [2024-06-20 17:46:43,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 79 transitions, 693 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:43,423 INFO L231 Difference]: Finished difference. Result has 84 places, 69 transitions, 556 flow [2024-06-20 17:46:43,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=556, PETRI_PLACES=84, PETRI_TRANSITIONS=69} [2024-06-20 17:46:43,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-20 17:46:43,424 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 69 transitions, 556 flow [2024-06-20 17:46:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:43,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:43,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:43,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 17:46:43,425 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)] === [2024-06-20 17:46:43,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1858870701, now seen corresponding path program 4 times [2024-06-20 17:46:43,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:43,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213668889] [2024-06-20 17:46:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:43,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:46,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213668889] [2024-06-20 17:46:46,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213668889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:46,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:46,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:46:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587390719] [2024-06-20 17:46:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:46:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:46:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:46:47,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:46:47,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 69 transitions, 556 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:47,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:47,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:46:47,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:47,381 INFO L124 PetriNetUnfolderBase]: 282/499 cut-off events. [2024-06-20 17:46:47,381 INFO L125 PetriNetUnfolderBase]: For 7564/7566 co-relation queries the response was YES. [2024-06-20 17:46:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 499 events. 282/499 cut-off events. For 7564/7566 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1872 event pairs, 84 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2617. Up to 387 conditions per place. [2024-06-20 17:46:47,385 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 51 selfloop transitions, 32 changer transitions 0/85 dead transitions. [2024-06-20 17:46:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 848 flow [2024-06-20 17:46:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:46:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:46:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-20 17:46:47,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38671875 [2024-06-20 17:46:47,387 INFO L175 Difference]: Start difference. First operand has 84 places, 69 transitions, 556 flow. Second operand 8 states and 99 transitions. [2024-06-20 17:46:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 848 flow [2024-06-20 17:46:47,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 795 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:47,394 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 628 flow [2024-06-20 17:46:47,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=628, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-20 17:46:47,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-20 17:46:47,394 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 628 flow [2024-06-20 17:46:47,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 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) [2024-06-20 17:46:47,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:47,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:47,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 17:46:47,395 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)] === [2024-06-20 17:46:47,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:47,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151855, now seen corresponding path program 3 times [2024-06-20 17:46:47,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:47,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205876966] [2024-06-20 17:46:47,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:47,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:50,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:50,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205876966] [2024-06-20 17:46:50,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205876966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:50,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:50,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477508387] [2024-06-20 17:46:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:50,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:50,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 628 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:50,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:50,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:51,414 INFO L124 PetriNetUnfolderBase]: 278/493 cut-off events. [2024-06-20 17:46:51,415 INFO L125 PetriNetUnfolderBase]: For 8119/8121 co-relation queries the response was YES. [2024-06-20 17:46:51,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 493 events. 278/493 cut-off events. For 8119/8121 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1836 event pairs, 74 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2642. Up to 411 conditions per place. [2024-06-20 17:46:51,419 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-20 17:46:51,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 812 flow [2024-06-20 17:46:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:51,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-20 17:46:51,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-20 17:46:51,420 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 628 flow. Second operand 7 states and 82 transitions. [2024-06-20 17:46:51,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 812 flow [2024-06-20 17:46:51,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 759 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-20 17:46:51,429 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 620 flow [2024-06-20 17:46:51,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=620, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-20 17:46:51,429 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-20 17:46:51,429 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 620 flow [2024-06-20 17:46:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:51,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:51,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:51,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 17:46:51,430 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)] === [2024-06-20 17:46:51,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1867151669, now seen corresponding path program 2 times [2024-06-20 17:46:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856397117] [2024-06-20 17:46:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:46:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:46:54,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:46:54,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856397117] [2024-06-20 17:46:54,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856397117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:46:54,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:46:54,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:46:54,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553496866] [2024-06-20 17:46:54,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:46:54,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:46:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:46:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:46:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:46:54,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:46:54,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 620 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:54,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:46:54,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:46:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:46:54,956 INFO L124 PetriNetUnfolderBase]: 276/490 cut-off events. [2024-06-20 17:46:54,957 INFO L125 PetriNetUnfolderBase]: For 8406/8408 co-relation queries the response was YES. [2024-06-20 17:46:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 490 events. 276/490 cut-off events. For 8406/8408 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1834 event pairs, 84 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 2645. Up to 437 conditions per place. [2024-06-20 17:46:54,961 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 61 selfloop transitions, 18 changer transitions 0/81 dead transitions. [2024-06-20 17:46:54,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 81 transitions, 800 flow [2024-06-20 17:46:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 17:46:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 17:46:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-20 17:46:54,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-20 17:46:54,969 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 620 flow. Second operand 7 states and 78 transitions. [2024-06-20 17:46:54,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 81 transitions, 800 flow [2024-06-20 17:46:54,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 81 transitions, 749 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 17:46:54,980 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 613 flow [2024-06-20 17:46:54,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2024-06-20 17:46:54,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-20 17:46:54,980 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 613 flow [2024-06-20 17:46:54,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:46:54,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:46:54,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:46:54,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 17:46:54,981 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)] === [2024-06-20 17:46:54,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:46:54,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1858563119, now seen corresponding path program 1 times [2024-06-20 17:46:54,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:46:54,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751063657] [2024-06-20 17:46:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:46:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:46:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:02,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:02,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751063657] [2024-06-20 17:47:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751063657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:02,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:02,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053646756] [2024-06-20 17:47:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:02,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:02,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:02,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:02,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 613 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:02,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:02,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:02,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:03,200 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-20 17:47:03,201 INFO L125 PetriNetUnfolderBase]: For 8851/8851 co-relation queries the response was YES. [2024-06-20 17:47:03,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 486 events. 274/486 cut-off events. For 8851/8851 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1807 event pairs, 77 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2639. Up to 463 conditions per place. [2024-06-20 17:47:03,204 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 68 selfloop transitions, 14 changer transitions 0/84 dead transitions. [2024-06-20 17:47:03,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 84 transitions, 811 flow [2024-06-20 17:47:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:47:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:47:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-20 17:47:03,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-20 17:47:03,205 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 613 flow. Second operand 9 states and 88 transitions. [2024-06-20 17:47:03,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 84 transitions, 811 flow [2024-06-20 17:47:03,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 84 transitions, 756 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 17:47:03,213 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 609 flow [2024-06-20 17:47:03,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=609, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-06-20 17:47:03,213 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-20 17:47:03,213 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 609 flow [2024-06-20 17:47:03,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:03,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:03,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:03,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 17:47:03,214 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)] === [2024-06-20 17:47:03,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash -965527044, now seen corresponding path program 1 times [2024-06-20 17:47:03,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:03,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252190683] [2024-06-20 17:47:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:03,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252190683] [2024-06-20 17:47:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252190683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:06,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611174985] [2024-06-20 17:47:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:06,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:06,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:06,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:06,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:06,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 609 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:06,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:06,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:06,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:07,200 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-20 17:47:07,200 INFO L125 PetriNetUnfolderBase]: For 9708/9708 co-relation queries the response was YES. [2024-06-20 17:47:07,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 501 events. 283/501 cut-off events. For 9708/9708 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1873 event pairs, 55 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2738. Up to 443 conditions per place. [2024-06-20 17:47:07,204 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-20 17:47:07,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 865 flow [2024-06-20 17:47:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:07,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 17:47:07,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-20 17:47:07,205 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 609 flow. Second operand 8 states and 90 transitions. [2024-06-20 17:47:07,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 865 flow [2024-06-20 17:47:07,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 830 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 17:47:07,212 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 651 flow [2024-06-20 17:47:07,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-06-20 17:47:07,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-20 17:47:07,213 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 651 flow [2024-06-20 17:47:07,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:07,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:07,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:07,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 17:47:07,213 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)] === [2024-06-20 17:47:07,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash -965382894, now seen corresponding path program 2 times [2024-06-20 17:47:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22176898] [2024-06-20 17:47:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22176898] [2024-06-20 17:47:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22176898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:10,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:10,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:10,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299523245] [2024-06-20 17:47:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:10,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:10,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:10,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:10,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 651 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:10,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:10,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:10,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:11,148 INFO L124 PetriNetUnfolderBase]: 289/511 cut-off events. [2024-06-20 17:47:11,149 INFO L125 PetriNetUnfolderBase]: For 10630/10630 co-relation queries the response was YES. [2024-06-20 17:47:11,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 511 events. 289/511 cut-off events. For 10630/10630 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1933 event pairs, 56 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2906. Up to 421 conditions per place. [2024-06-20 17:47:11,152 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 70 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-20 17:47:11,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 899 flow [2024-06-20 17:47:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-20 17:47:11,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36328125 [2024-06-20 17:47:11,155 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 651 flow. Second operand 8 states and 93 transitions. [2024-06-20 17:47:11,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 899 flow [2024-06-20 17:47:11,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 96 transitions, 864 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-20 17:47:11,165 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 695 flow [2024-06-20 17:47:11,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=695, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-06-20 17:47:11,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-20 17:47:11,165 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 695 flow [2024-06-20 17:47:11,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:11,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:11,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:11,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 17:47:11,166 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)] === [2024-06-20 17:47:11,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash 37985642, now seen corresponding path program 3 times [2024-06-20 17:47:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967200743] [2024-06-20 17:47:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:11,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:14,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:14,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967200743] [2024-06-20 17:47:14,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967200743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:14,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:14,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245956055] [2024-06-20 17:47:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:14,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:14,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:14,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:14,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:14,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:14,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 695 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:14,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:14,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:14,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:15,038 INFO L124 PetriNetUnfolderBase]: 300/529 cut-off events. [2024-06-20 17:47:15,038 INFO L125 PetriNetUnfolderBase]: For 12150/12150 co-relation queries the response was YES. [2024-06-20 17:47:15,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 529 events. 300/529 cut-off events. For 12150/12150 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2024 event pairs, 54 based on Foata normal form. 2/530 useless extension candidates. Maximal degree in co-relation 3115. Up to 410 conditions per place. [2024-06-20 17:47:15,042 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 33 changer transitions 0/103 dead transitions. [2024-06-20 17:47:15,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 103 transitions, 1047 flow [2024-06-20 17:47:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-20 17:47:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 17:47:15,043 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 695 flow. Second operand 8 states and 96 transitions. [2024-06-20 17:47:15,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 103 transitions, 1047 flow [2024-06-20 17:47:15,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 103 transitions, 984 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-20 17:47:15,055 INFO L231 Difference]: Finished difference. Result has 100 places, 86 transitions, 760 flow [2024-06-20 17:47:15,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=100, PETRI_TRANSITIONS=86} [2024-06-20 17:47:15,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-20 17:47:15,055 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 86 transitions, 760 flow [2024-06-20 17:47:15,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:15,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:15,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:15,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 17:47:15,056 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)] === [2024-06-20 17:47:15,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:15,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1103905247, now seen corresponding path program 1 times [2024-06-20 17:47:15,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:15,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078222785] [2024-06-20 17:47:15,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:15,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:19,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078222785] [2024-06-20 17:47:19,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078222785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:19,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:19,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051126338] [2024-06-20 17:47:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:19,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:19,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:19,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 86 transitions, 760 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:19,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:19,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:19,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:19,685 INFO L124 PetriNetUnfolderBase]: 303/534 cut-off events. [2024-06-20 17:47:19,685 INFO L125 PetriNetUnfolderBase]: For 12950/12950 co-relation queries the response was YES. [2024-06-20 17:47:19,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 534 events. 303/534 cut-off events. For 12950/12950 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2043 event pairs, 73 based on Foata normal form. 1/534 useless extension candidates. Maximal degree in co-relation 3225. Up to 471 conditions per place. [2024-06-20 17:47:19,690 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 77 selfloop transitions, 22 changer transitions 0/101 dead transitions. [2024-06-20 17:47:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1024 flow [2024-06-20 17:47:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:19,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 17:47:19,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-20 17:47:19,695 INFO L175 Difference]: Start difference. First operand has 100 places, 86 transitions, 760 flow. Second operand 8 states and 89 transitions. [2024-06-20 17:47:19,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1024 flow [2024-06-20 17:47:19,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 973 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-20 17:47:19,710 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 793 flow [2024-06-20 17:47:19,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=793, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-20 17:47:19,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-20 17:47:19,711 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 793 flow [2024-06-20 17:47:19,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:19,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:19,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:19,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 17:47:19,712 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)] === [2024-06-20 17:47:19,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:19,712 INFO L85 PathProgramCache]: Analyzing trace with hash -959805188, now seen corresponding path program 1 times [2024-06-20 17:47:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224118421] [2024-06-20 17:47:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224118421] [2024-06-20 17:47:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224118421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086900910] [2024-06-20 17:47:24,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:24,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:25,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:25,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 793 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:25,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:25,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:25,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:25,483 INFO L124 PetriNetUnfolderBase]: 309/545 cut-off events. [2024-06-20 17:47:25,483 INFO L125 PetriNetUnfolderBase]: For 14103/14103 co-relation queries the response was YES. [2024-06-20 17:47:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 545 events. 309/545 cut-off events. For 14103/14103 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2092 event pairs, 78 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3322. Up to 479 conditions per place. [2024-06-20 17:47:25,488 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 22 changer transitions 0/105 dead transitions. [2024-06-20 17:47:25,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 1067 flow [2024-06-20 17:47:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:47:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:47:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 17:47:25,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-20 17:47:25,490 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 793 flow. Second operand 9 states and 97 transitions. [2024-06-20 17:47:25,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 1067 flow [2024-06-20 17:47:25,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 1013 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 17:47:25,509 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 814 flow [2024-06-20 17:47:25,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=814, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-20 17:47:25,509 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-20 17:47:25,510 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 814 flow [2024-06-20 17:47:25,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:25,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:25,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:25,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 17:47:25,512 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)] === [2024-06-20 17:47:25,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash -171972808, now seen corresponding path program 2 times [2024-06-20 17:47:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341635910] [2024-06-20 17:47:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:30,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:30,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341635910] [2024-06-20 17:47:30,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341635910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:30,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:30,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416039508] [2024-06-20 17:47:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:30,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:30,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:30,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 814 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:31,139 INFO L124 PetriNetUnfolderBase]: 315/555 cut-off events. [2024-06-20 17:47:31,140 INFO L125 PetriNetUnfolderBase]: For 15152/15154 co-relation queries the response was YES. [2024-06-20 17:47:31,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3492 conditions, 555 events. 315/555 cut-off events. For 15152/15154 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2144 event pairs, 75 based on Foata normal form. 2/556 useless extension candidates. Maximal degree in co-relation 3441. Up to 468 conditions per place. [2024-06-20 17:47:31,143 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 74 selfloop transitions, 29 changer transitions 0/105 dead transitions. [2024-06-20 17:47:31,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 105 transitions, 1090 flow [2024-06-20 17:47:31,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:47:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:47:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 17:47:31,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-20 17:47:31,147 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 814 flow. Second operand 9 states and 97 transitions. [2024-06-20 17:47:31,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 105 transitions, 1090 flow [2024-06-20 17:47:31,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 105 transitions, 1031 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 17:47:31,168 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 848 flow [2024-06-20 17:47:31,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=848, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2024-06-20 17:47:31,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-20 17:47:31,169 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 848 flow [2024-06-20 17:47:31,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:31,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:31,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 17:47:31,170 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)] === [2024-06-20 17:47:31,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1234297276, now seen corresponding path program 4 times [2024-06-20 17:47:31,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:31,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287433942] [2024-06-20 17:47:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:31,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287433942] [2024-06-20 17:47:34,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287433942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:34,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:34,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024145422] [2024-06-20 17:47:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:34,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:34,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:34,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:34,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 848 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:34,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:34,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:34,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:35,091 INFO L124 PetriNetUnfolderBase]: 321/565 cut-off events. [2024-06-20 17:47:35,091 INFO L125 PetriNetUnfolderBase]: For 16254/16256 co-relation queries the response was YES. [2024-06-20 17:47:35,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 565 events. 321/565 cut-off events. For 16254/16256 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2188 event pairs, 71 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3573. Up to 470 conditions per place. [2024-06-20 17:47:35,096 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 26 changer transitions 0/106 dead transitions. [2024-06-20 17:47:35,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 1122 flow [2024-06-20 17:47:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:35,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 17:47:35,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-20 17:47:35,097 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 848 flow. Second operand 8 states and 90 transitions. [2024-06-20 17:47:35,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 1122 flow [2024-06-20 17:47:35,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 1045 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 17:47:35,118 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 862 flow [2024-06-20 17:47:35,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=862, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-06-20 17:47:35,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-20 17:47:35,121 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 862 flow [2024-06-20 17:47:35,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:35,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:35,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 17:47:35,122 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)] === [2024-06-20 17:47:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2047131822, now seen corresponding path program 5 times [2024-06-20 17:47:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026949483] [2024-06-20 17:47:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:38,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026949483] [2024-06-20 17:47:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026949483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269630342] [2024-06-20 17:47:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:38,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:38,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:38,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:38,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:38,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:38,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:38,964 INFO L124 PetriNetUnfolderBase]: 327/575 cut-off events. [2024-06-20 17:47:38,965 INFO L125 PetriNetUnfolderBase]: For 17530/17532 co-relation queries the response was YES. [2024-06-20 17:47:38,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3742 conditions, 575 events. 327/575 cut-off events. For 17530/17532 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2230 event pairs, 74 based on Foata normal form. 2/576 useless extension candidates. Maximal degree in co-relation 3689. Up to 484 conditions per place. [2024-06-20 17:47:38,968 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 82 selfloop transitions, 24 changer transitions 0/108 dead transitions. [2024-06-20 17:47:38,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 1142 flow [2024-06-20 17:47:38,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:38,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-20 17:47:38,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-20 17:47:38,969 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 862 flow. Second operand 8 states and 91 transitions. [2024-06-20 17:47:38,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 1142 flow [2024-06-20 17:47:38,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 108 transitions, 1067 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-20 17:47:38,985 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 878 flow [2024-06-20 17:47:38,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=878, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-06-20 17:47:38,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-20 17:47:38,985 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 878 flow [2024-06-20 17:47:38,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:38,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:38,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:38,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 17:47:38,986 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)] === [2024-06-20 17:47:38,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:38,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2046916496, now seen corresponding path program 3 times [2024-06-20 17:47:38,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:38,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91437511] [2024-06-20 17:47:38,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:38,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91437511] [2024-06-20 17:47:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91437511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:44,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:44,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791273961] [2024-06-20 17:47:44,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:44,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:44,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:44,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:44,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 878 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:44,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:44,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:44,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:44,756 INFO L124 PetriNetUnfolderBase]: 333/585 cut-off events. [2024-06-20 17:47:44,756 INFO L125 PetriNetUnfolderBase]: For 18713/18715 co-relation queries the response was YES. [2024-06-20 17:47:44,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3829 conditions, 585 events. 333/585 cut-off events. For 18713/18715 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2287 event pairs, 85 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 3775. Up to 519 conditions per place. [2024-06-20 17:47:44,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-20 17:47:44,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 110 transitions, 1162 flow [2024-06-20 17:47:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:47:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:47:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-20 17:47:44,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-20 17:47:44,762 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 878 flow. Second operand 9 states and 95 transitions. [2024-06-20 17:47:44,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 110 transitions, 1162 flow [2024-06-20 17:47:44,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 1087 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-20 17:47:44,786 INFO L231 Difference]: Finished difference. Result has 115 places, 98 transitions, 884 flow [2024-06-20 17:47:44,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=884, PETRI_PLACES=115, PETRI_TRANSITIONS=98} [2024-06-20 17:47:44,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-20 17:47:44,787 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 98 transitions, 884 flow [2024-06-20 17:47:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:44,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:44,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:44,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 17:47:44,788 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)] === [2024-06-20 17:47:44,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2047126025, now seen corresponding path program 2 times [2024-06-20 17:47:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358964228] [2024-06-20 17:47:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:48,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:48,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358964228] [2024-06-20 17:47:48,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358964228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:48,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:48,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786091566] [2024-06-20 17:47:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:48,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:48,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:48,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:48,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:48,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 98 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:48,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:48,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:48,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:48,838 INFO L124 PetriNetUnfolderBase]: 331/582 cut-off events. [2024-06-20 17:47:48,839 INFO L125 PetriNetUnfolderBase]: For 18857/18859 co-relation queries the response was YES. [2024-06-20 17:47:48,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 582 events. 331/582 cut-off events. For 18857/18859 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2286 event pairs, 85 based on Foata normal form. 1/582 useless extension candidates. Maximal degree in co-relation 3746. Up to 518 conditions per place. [2024-06-20 17:47:48,844 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 84 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-20 17:47:48,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 108 transitions, 1126 flow [2024-06-20 17:47:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-20 17:47:48,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-20 17:47:48,845 INFO L175 Difference]: Start difference. First operand has 115 places, 98 transitions, 884 flow. Second operand 8 states and 87 transitions. [2024-06-20 17:47:48,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 108 transitions, 1126 flow [2024-06-20 17:47:48,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 1057 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 17:47:48,873 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 867 flow [2024-06-20 17:47:48,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=867, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-20 17:47:48,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-20 17:47:48,874 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 867 flow [2024-06-20 17:47:48,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:48,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:48,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 17:47:48,874 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)] === [2024-06-20 17:47:48,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1790423922, now seen corresponding path program 6 times [2024-06-20 17:47:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702666944] [2024-06-20 17:47:48,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:48,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:52,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:52,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702666944] [2024-06-20 17:47:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702666944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:52,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:52,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334394755] [2024-06-20 17:47:52,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:52,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:52,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 867 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:52,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:52,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:52,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:52,743 INFO L124 PetriNetUnfolderBase]: 337/592 cut-off events. [2024-06-20 17:47:52,743 INFO L125 PetriNetUnfolderBase]: For 20606/20608 co-relation queries the response was YES. [2024-06-20 17:47:52,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3891 conditions, 592 events. 337/592 cut-off events. For 20606/20608 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2340 event pairs, 64 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 3835. Up to 425 conditions per place. [2024-06-20 17:47:52,748 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 44 changer transitions 0/117 dead transitions. [2024-06-20 17:47:52,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 117 transitions, 1285 flow [2024-06-20 17:47:52,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:52,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 17:47:52,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-20 17:47:52,753 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 867 flow. Second operand 8 states and 95 transitions. [2024-06-20 17:47:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 117 transitions, 1285 flow [2024-06-20 17:47:52,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 1211 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 17:47:52,780 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 966 flow [2024-06-20 17:47:52,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=966, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-20 17:47:52,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-20 17:47:52,780 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 966 flow [2024-06-20 17:47:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:52,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:52,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 17:47:52,781 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)] === [2024-06-20 17:47:52,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 65445290, now seen corresponding path program 7 times [2024-06-20 17:47:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632754310] [2024-06-20 17:47:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:47:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:47:56,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:47:56,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632754310] [2024-06-20 17:47:56,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632754310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:47:56,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:47:56,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:47:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530000985] [2024-06-20 17:47:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:47:56,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:47:56,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:47:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:47:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:47:56,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:47:56,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:56,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:47:56,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:47:56,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:47:56,689 INFO L124 PetriNetUnfolderBase]: 333/586 cut-off events. [2024-06-20 17:47:56,689 INFO L125 PetriNetUnfolderBase]: For 20964/20966 co-relation queries the response was YES. [2024-06-20 17:47:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3901 conditions, 586 events. 333/586 cut-off events. For 20964/20966 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2325 event pairs, 73 based on Foata normal form. 2/587 useless extension candidates. Maximal degree in co-relation 3844. Up to 474 conditions per place. [2024-06-20 17:47:56,694 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 83 selfloop transitions, 31 changer transitions 0/116 dead transitions. [2024-06-20 17:47:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 116 transitions, 1238 flow [2024-06-20 17:47:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:47:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:47:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 17:47:56,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-20 17:47:56,695 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 966 flow. Second operand 8 states and 95 transitions. [2024-06-20 17:47:56,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 116 transitions, 1238 flow [2024-06-20 17:47:56,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 1170 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-20 17:47:56,724 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 968 flow [2024-06-20 17:47:56,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-20 17:47:56,724 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-20 17:47:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 968 flow [2024-06-20 17:47:56,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:47:56,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:47:56,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:47:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 17:47:56,725 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)] === [2024-06-20 17:47:56,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:47:56,726 INFO L85 PathProgramCache]: Analyzing trace with hash 331678746, now seen corresponding path program 4 times [2024-06-20 17:47:56,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:47:56,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889851909] [2024-06-20 17:47:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:47:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:47:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889851909] [2024-06-20 17:48:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889851909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:01,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:01,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858188002] [2024-06-20 17:48:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:01,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:01,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 968 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:01,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:01,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:01,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:01,741 INFO L124 PetriNetUnfolderBase]: 355/621 cut-off events. [2024-06-20 17:48:01,741 INFO L125 PetriNetUnfolderBase]: For 24219/24219 co-relation queries the response was YES. [2024-06-20 17:48:01,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 621 events. 355/621 cut-off events. For 24219/24219 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2488 event pairs, 80 based on Foata normal form. 4/624 useless extension candidates. Maximal degree in co-relation 4137. Up to 575 conditions per place. [2024-06-20 17:48:01,745 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 99 selfloop transitions, 19 changer transitions 0/120 dead transitions. [2024-06-20 17:48:01,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 120 transitions, 1374 flow [2024-06-20 17:48:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:48:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:48:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-20 17:48:01,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315625 [2024-06-20 17:48:01,754 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 968 flow. Second operand 10 states and 101 transitions. [2024-06-20 17:48:01,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 120 transitions, 1374 flow [2024-06-20 17:48:01,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 120 transitions, 1241 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 17:48:01,790 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 952 flow [2024-06-20 17:48:01,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=952, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-20 17:48:01,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-20 17:48:01,791 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 952 flow [2024-06-20 17:48:01,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:01,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:01,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 17:48:01,792 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)] === [2024-06-20 17:48:01,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1781219216, now seen corresponding path program 5 times [2024-06-20 17:48:01,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:01,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679634066] [2024-06-20 17:48:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:06,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:06,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679634066] [2024-06-20 17:48:06,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679634066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:06,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:06,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812283670] [2024-06-20 17:48:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:06,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:06,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:06,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:06,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:06,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 952 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:06,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:06,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:06,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:06,668 INFO L124 PetriNetUnfolderBase]: 361/632 cut-off events. [2024-06-20 17:48:06,669 INFO L125 PetriNetUnfolderBase]: For 24651/24653 co-relation queries the response was YES. [2024-06-20 17:48:06,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 632 events. 361/632 cut-off events. For 24651/24653 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2555 event pairs, 72 based on Foata normal form. 4/635 useless extension candidates. Maximal degree in co-relation 4178. Up to 467 conditions per place. [2024-06-20 17:48:06,673 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 85 selfloop transitions, 38 changer transitions 0/125 dead transitions. [2024-06-20 17:48:06,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 1384 flow [2024-06-20 17:48:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:06,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 17:48:06,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-20 17:48:06,676 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 952 flow. Second operand 9 states and 101 transitions. [2024-06-20 17:48:06,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 1384 flow [2024-06-20 17:48:06,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 1329 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-20 17:48:06,707 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 1074 flow [2024-06-20 17:48:06,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1074, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2024-06-20 17:48:06,708 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-20 17:48:06,708 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 1074 flow [2024-06-20 17:48:06,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:06,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:06,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:06,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 17:48:06,709 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)] === [2024-06-20 17:48:06,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1780880882, now seen corresponding path program 1 times [2024-06-20 17:48:06,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:06,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018894748] [2024-06-20 17:48:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:06,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:12,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018894748] [2024-06-20 17:48:12,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018894748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:12,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:12,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:12,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219791352] [2024-06-20 17:48:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:12,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:48:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 1074 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) [2024-06-20 17:48:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:48:12,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:12,999 INFO L124 PetriNetUnfolderBase]: 358/626 cut-off events. [2024-06-20 17:48:13,000 INFO L125 PetriNetUnfolderBase]: For 24682/24682 co-relation queries the response was YES. [2024-06-20 17:48:13,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 626 events. 358/626 cut-off events. For 24682/24682 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2493 event pairs, 87 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4226. Up to 597 conditions per place. [2024-06-20 17:48:13,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 15 changer transitions 0/122 dead transitions. [2024-06-20 17:48:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 122 transitions, 1338 flow [2024-06-20 17:48:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:48:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:48:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 17:48:13,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-20 17:48:13,005 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 1074 flow. Second operand 10 states and 105 transitions. [2024-06-20 17:48:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 122 transitions, 1338 flow [2024-06-20 17:48:13,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 1268 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-20 17:48:13,031 INFO L231 Difference]: Finished difference. Result has 132 places, 111 transitions, 1038 flow [2024-06-20 17:48:13,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=132, PETRI_TRANSITIONS=111} [2024-06-20 17:48:13,031 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-20 17:48:13,031 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 111 transitions, 1038 flow [2024-06-20 17:48:13,032 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) [2024-06-20 17:48:13,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:13,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:13,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 17:48:13,032 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)] === [2024-06-20 17:48:13,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:13,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1059229698, now seen corresponding path program 1 times [2024-06-20 17:48:13,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:13,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786421169] [2024-06-20 17:48:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:13,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:17,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786421169] [2024-06-20 17:48:17,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786421169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:17,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:17,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784256909] [2024-06-20 17:48:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:17,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:17,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 111 transitions, 1038 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:17,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:17,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:17,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:18,198 INFO L124 PetriNetUnfolderBase]: 369/647 cut-off events. [2024-06-20 17:48:18,198 INFO L125 PetriNetUnfolderBase]: For 27133/27133 co-relation queries the response was YES. [2024-06-20 17:48:18,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4441 conditions, 647 events. 369/647 cut-off events. For 27133/27133 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2625 event pairs, 49 based on Foata normal form. 2/648 useless extension candidates. Maximal degree in co-relation 4377. Up to 557 conditions per place. [2024-06-20 17:48:18,202 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 114 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-06-20 17:48:18,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 132 transitions, 1438 flow [2024-06-20 17:48:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:48:18,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:48:18,203 INFO L175 Difference]: Start difference. First operand has 132 places, 111 transitions, 1038 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:48:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 132 transitions, 1438 flow [2024-06-20 17:48:18,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 132 transitions, 1398 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 17:48:18,232 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 1056 flow [2024-06-20 17:48:18,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-20 17:48:18,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-20 17:48:18,232 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 1056 flow [2024-06-20 17:48:18,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:18,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:18,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:18,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 17:48:18,233 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)] === [2024-06-20 17:48:18,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:18,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1059290148, now seen corresponding path program 2 times [2024-06-20 17:48:18,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:18,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66084506] [2024-06-20 17:48:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:18,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:22,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:22,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66084506] [2024-06-20 17:48:22,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66084506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:22,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:22,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 17:48:22,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589334517] [2024-06-20 17:48:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:22,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 17:48:22,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:22,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 17:48:22,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-20 17:48:22,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:22,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 1056 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:22,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:22,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:22,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:22,930 INFO L124 PetriNetUnfolderBase]: 366/642 cut-off events. [2024-06-20 17:48:22,931 INFO L125 PetriNetUnfolderBase]: For 27043/27043 co-relation queries the response was YES. [2024-06-20 17:48:22,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4389 conditions, 642 events. 366/642 cut-off events. For 27043/27043 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2608 event pairs, 68 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4324. Up to 581 conditions per place. [2024-06-20 17:48:22,935 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 113 selfloop transitions, 14 changer transitions 0/129 dead transitions. [2024-06-20 17:48:22,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 129 transitions, 1350 flow [2024-06-20 17:48:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:48:22,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:48:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-20 17:48:22,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-20 17:48:22,936 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 1056 flow. Second operand 8 states and 89 transitions. [2024-06-20 17:48:22,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 129 transitions, 1350 flow [2024-06-20 17:48:22,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 129 transitions, 1317 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-20 17:48:22,968 INFO L231 Difference]: Finished difference. Result has 136 places, 113 transitions, 1056 flow [2024-06-20 17:48:22,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1056, PETRI_PLACES=136, PETRI_TRANSITIONS=113} [2024-06-20 17:48:22,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-20 17:48:22,968 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 1056 flow [2024-06-20 17:48:22,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:22,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:22,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:22,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 17:48:22,969 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)] === [2024-06-20 17:48:22,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:22,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2087493914, now seen corresponding path program 1 times [2024-06-20 17:48:22,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:22,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231989474] [2024-06-20 17:48:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:22,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:27,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231989474] [2024-06-20 17:48:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231989474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:27,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:27,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:48:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892830351] [2024-06-20 17:48:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:48:27,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:27,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:48:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:48:27,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:27,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 1056 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:27,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:27,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:27,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:27,678 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2024-06-20 17:48:27,678 INFO L125 PetriNetUnfolderBase]: For 28392/28392 co-relation queries the response was YES. [2024-06-20 17:48:27,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 652 events. 372/652 cut-off events. For 28392/28392 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2676 event pairs, 67 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4414. Up to 586 conditions per place. [2024-06-20 17:48:27,682 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 115 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2024-06-20 17:48:27,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1396 flow [2024-06-20 17:48:27,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 17:48:27,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 17:48:27,683 INFO L175 Difference]: Start difference. First operand has 136 places, 113 transitions, 1056 flow. Second operand 9 states and 99 transitions. [2024-06-20 17:48:27,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1396 flow [2024-06-20 17:48:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 133 transitions, 1366 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 17:48:27,716 INFO L231 Difference]: Finished difference. Result has 138 places, 115 transitions, 1097 flow [2024-06-20 17:48:27,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=138, PETRI_TRANSITIONS=115} [2024-06-20 17:48:27,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 107 predicate places. [2024-06-20 17:48:27,717 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 115 transitions, 1097 flow [2024-06-20 17:48:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:27,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:27,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:27,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 17:48:27,717 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)] === [2024-06-20 17:48:27,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2087489078, now seen corresponding path program 1 times [2024-06-20 17:48:27,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:27,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908252176] [2024-06-20 17:48:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:27,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:31,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908252176] [2024-06-20 17:48:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908252176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:31,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:31,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:31,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224457042] [2024-06-20 17:48:31,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:31,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:31,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:31,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:31,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:31,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 115 transitions, 1097 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:31,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:31,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:31,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:32,031 INFO L124 PetriNetUnfolderBase]: 370/649 cut-off events. [2024-06-20 17:48:32,031 INFO L125 PetriNetUnfolderBase]: For 28196/28196 co-relation queries the response was YES. [2024-06-20 17:48:32,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 649 events. 370/649 cut-off events. For 28196/28196 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2655 event pairs, 66 based on Foata normal form. 1/649 useless extension candidates. Maximal degree in co-relation 4425. Up to 585 conditions per place. [2024-06-20 17:48:32,035 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 112 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-20 17:48:32,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 131 transitions, 1397 flow [2024-06-20 17:48:32,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:48:32,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:48:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 17:48:32,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-20 17:48:32,036 INFO L175 Difference]: Start difference. First operand has 138 places, 115 transitions, 1097 flow. Second operand 8 states and 90 transitions. [2024-06-20 17:48:32,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 131 transitions, 1397 flow [2024-06-20 17:48:32,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 131 transitions, 1334 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 17:48:32,071 INFO L231 Difference]: Finished difference. Result has 139 places, 115 transitions, 1076 flow [2024-06-20 17:48:32,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1076, PETRI_PLACES=139, PETRI_TRANSITIONS=115} [2024-06-20 17:48:32,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-20 17:48:32,071 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 115 transitions, 1076 flow [2024-06-20 17:48:32,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:32,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:32,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:32,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 17:48:32,072 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)] === [2024-06-20 17:48:32,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2091962564, now seen corresponding path program 2 times [2024-06-20 17:48:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622194190] [2024-06-20 17:48:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:35,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622194190] [2024-06-20 17:48:35,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622194190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:35,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:35,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:48:35,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339335194] [2024-06-20 17:48:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:35,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:48:35,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:48:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:48:36,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:36,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 115 transitions, 1076 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:36,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:36,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:36,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:36,592 INFO L124 PetriNetUnfolderBase]: 376/659 cut-off events. [2024-06-20 17:48:36,593 INFO L125 PetriNetUnfolderBase]: For 30750/30750 co-relation queries the response was YES. [2024-06-20 17:48:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 659 events. 376/659 cut-off events. For 30750/30750 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2717 event pairs, 63 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4493. Up to 561 conditions per place. [2024-06-20 17:48:36,597 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 26 changer transitions 0/133 dead transitions. [2024-06-20 17:48:36,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1416 flow [2024-06-20 17:48:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 17:48:36,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-20 17:48:36,598 INFO L175 Difference]: Start difference. First operand has 139 places, 115 transitions, 1076 flow. Second operand 9 states and 102 transitions. [2024-06-20 17:48:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1416 flow [2024-06-20 17:48:36,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 133 transitions, 1365 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 17:48:36,652 INFO L231 Difference]: Finished difference. Result has 141 places, 117 transitions, 1120 flow [2024-06-20 17:48:36,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1120, PETRI_PLACES=141, PETRI_TRANSITIONS=117} [2024-06-20 17:48:36,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-20 17:48:36,653 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 117 transitions, 1120 flow [2024-06-20 17:48:36,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:36,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:36,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:36,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 17:48:36,657 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)] === [2024-06-20 17:48:36,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1176783182, now seen corresponding path program 3 times [2024-06-20 17:48:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337283814] [2024-06-20 17:48:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:40,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337283814] [2024-06-20 17:48:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337283814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:40,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:48:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272935387] [2024-06-20 17:48:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:48:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:48:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:48:40,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:40,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 117 transitions, 1120 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:40,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:40,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:41,296 INFO L124 PetriNetUnfolderBase]: 380/667 cut-off events. [2024-06-20 17:48:41,297 INFO L125 PetriNetUnfolderBase]: For 32471/32471 co-relation queries the response was YES. [2024-06-20 17:48:41,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 667 events. 380/667 cut-off events. For 32471/32471 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2758 event pairs, 63 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 4601. Up to 579 conditions per place. [2024-06-20 17:48:41,300 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 107 selfloop transitions, 23 changer transitions 0/132 dead transitions. [2024-06-20 17:48:41,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 132 transitions, 1428 flow [2024-06-20 17:48:41,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:48:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:48:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 17:48:41,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-20 17:48:41,302 INFO L175 Difference]: Start difference. First operand has 141 places, 117 transitions, 1120 flow. Second operand 8 states and 92 transitions. [2024-06-20 17:48:41,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 132 transitions, 1428 flow [2024-06-20 17:48:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 132 transitions, 1349 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 17:48:41,342 INFO L231 Difference]: Finished difference. Result has 142 places, 118 transitions, 1105 flow [2024-06-20 17:48:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1105, PETRI_PLACES=142, PETRI_TRANSITIONS=118} [2024-06-20 17:48:41,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-20 17:48:41,343 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 118 transitions, 1105 flow [2024-06-20 17:48:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:41,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:41,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 17:48:41,344 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)] === [2024-06-20 17:48:41,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1177555768, now seen corresponding path program 3 times [2024-06-20 17:48:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128919802] [2024-06-20 17:48:41,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:45,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:45,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128919802] [2024-06-20 17:48:45,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128919802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:45,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:45,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:48:45,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689247025] [2024-06-20 17:48:45,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:45,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:48:45,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:45,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:48:45,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:48:45,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:45,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 118 transitions, 1105 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:45,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:45,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:45,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:45,588 INFO L124 PetriNetUnfolderBase]: 386/677 cut-off events. [2024-06-20 17:48:45,588 INFO L125 PetriNetUnfolderBase]: For 33941/33941 co-relation queries the response was YES. [2024-06-20 17:48:45,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4740 conditions, 677 events. 386/677 cut-off events. For 33941/33941 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2824 event pairs, 56 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4669. Up to 551 conditions per place. [2024-06-20 17:48:45,592 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 101 selfloop transitions, 35 changer transitions 0/138 dead transitions. [2024-06-20 17:48:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 138 transitions, 1469 flow [2024-06-20 17:48:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 17:48:45,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-20 17:48:45,593 INFO L175 Difference]: Start difference. First operand has 142 places, 118 transitions, 1105 flow. Second operand 9 states and 104 transitions. [2024-06-20 17:48:45,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 138 transitions, 1469 flow [2024-06-20 17:48:45,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 138 transitions, 1415 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-20 17:48:45,633 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1168 flow [2024-06-20 17:48:45,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1168, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2024-06-20 17:48:45,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-20 17:48:45,634 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1168 flow [2024-06-20 17:48:45,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:45,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:45,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 17:48:45,634 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)] === [2024-06-20 17:48:45,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash 138676360, now seen corresponding path program 4 times [2024-06-20 17:48:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:45,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98218155] [2024-06-20 17:48:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:49,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:49,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98218155] [2024-06-20 17:48:49,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98218155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:49,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:49,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:48:49,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208369229] [2024-06-20 17:48:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:49,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:48:49,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:48:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:48:49,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:49,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1168 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:49,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:49,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:49,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:49,763 INFO L124 PetriNetUnfolderBase]: 397/695 cut-off events. [2024-06-20 17:48:49,764 INFO L125 PetriNetUnfolderBase]: For 36908/36908 co-relation queries the response was YES. [2024-06-20 17:48:49,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5015 conditions, 695 events. 397/695 cut-off events. For 36908/36908 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2926 event pairs, 56 based on Foata normal form. 2/696 useless extension candidates. Maximal degree in co-relation 4943. Up to 530 conditions per place. [2024-06-20 17:48:49,768 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 45 changer transitions 0/144 dead transitions. [2024-06-20 17:48:49,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 144 transitions, 1686 flow [2024-06-20 17:48:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 17:48:49,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-20 17:48:49,769 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1168 flow. Second operand 9 states and 107 transitions. [2024-06-20 17:48:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 144 transitions, 1686 flow [2024-06-20 17:48:49,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1585 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 17:48:49,822 INFO L231 Difference]: Finished difference. Result has 147 places, 124 transitions, 1251 flow [2024-06-20 17:48:49,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1251, PETRI_PLACES=147, PETRI_TRANSITIONS=124} [2024-06-20 17:48:49,822 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-20 17:48:49,822 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 1251 flow [2024-06-20 17:48:49,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:49,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:49,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 17:48:49,823 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)] === [2024-06-20 17:48:49,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 827696728, now seen corresponding path program 1 times [2024-06-20 17:48:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:49,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899324109] [2024-06-20 17:48:49,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:49,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:48:54,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:48:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:48:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899324109] [2024-06-20 17:48:54,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899324109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:48:54,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:48:54,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:48:54,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929762713] [2024-06-20 17:48:54,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:48:54,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:48:54,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:48:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:48:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:48:54,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:48:54,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 1251 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:54,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:48:54,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:48:54,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:48:55,439 INFO L124 PetriNetUnfolderBase]: 400/700 cut-off events. [2024-06-20 17:48:55,439 INFO L125 PetriNetUnfolderBase]: For 37409/37409 co-relation queries the response was YES. [2024-06-20 17:48:55,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 700 events. 400/700 cut-off events. For 37409/37409 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2955 event pairs, 80 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 5045. Up to 626 conditions per place. [2024-06-20 17:48:55,443 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 26 changer transitions 0/141 dead transitions. [2024-06-20 17:48:55,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 141 transitions, 1617 flow [2024-06-20 17:48:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:48:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:48:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:48:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:48:55,444 INFO L175 Difference]: Start difference. First operand has 147 places, 124 transitions, 1251 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:48:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 141 transitions, 1617 flow [2024-06-20 17:48:55,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 141 transitions, 1533 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-20 17:48:55,501 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 1273 flow [2024-06-20 17:48:55,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2024-06-20 17:48:55,502 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-20 17:48:55,502 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 1273 flow [2024-06-20 17:48:55,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:48:55,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:48:55,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:48:55,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 17:48:55,502 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)] === [2024-06-20 17:48:55,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:48:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash 310811172, now seen corresponding path program 1 times [2024-06-20 17:48:55,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:48:55,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309681426] [2024-06-20 17:48:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:48:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:48:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:00,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:00,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309681426] [2024-06-20 17:49:00,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309681426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:00,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:00,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229736502] [2024-06-20 17:49:00,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:00,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:00,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:00,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 1273 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:00,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:00,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:00,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:01,021 INFO L124 PetriNetUnfolderBase]: 406/711 cut-off events. [2024-06-20 17:49:01,021 INFO L125 PetriNetUnfolderBase]: For 39761/39761 co-relation queries the response was YES. [2024-06-20 17:49:01,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 711 events. 406/711 cut-off events. For 39761/39761 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3015 event pairs, 88 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 5153. Up to 637 conditions per place. [2024-06-20 17:49:01,025 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-20 17:49:01,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 143 transitions, 1635 flow [2024-06-20 17:49:01,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:01,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:49:01,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:49:01,026 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 1273 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:49:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 143 transitions, 1635 flow [2024-06-20 17:49:01,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 143 transitions, 1557 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-20 17:49:01,089 INFO L231 Difference]: Finished difference. Result has 153 places, 128 transitions, 1285 flow [2024-06-20 17:49:01,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1285, PETRI_PLACES=153, PETRI_TRANSITIONS=128} [2024-06-20 17:49:01,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 122 predicate places. [2024-06-20 17:49:01,089 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 128 transitions, 1285 flow [2024-06-20 17:49:01,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:01,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:01,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 17:49:01,090 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)] === [2024-06-20 17:49:01,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash -404450170, now seen corresponding path program 4 times [2024-06-20 17:49:01,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:01,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782104441] [2024-06-20 17:49:01,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:01,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782104441] [2024-06-20 17:49:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782104441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:05,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:05,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:49:05,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701741981] [2024-06-20 17:49:05,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:05,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:49:05,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:05,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:49:05,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:49:05,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:05,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 128 transitions, 1285 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:05,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:05,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:05,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:05,653 INFO L124 PetriNetUnfolderBase]: 403/706 cut-off events. [2024-06-20 17:49:05,653 INFO L125 PetriNetUnfolderBase]: For 39518/39520 co-relation queries the response was YES. [2024-06-20 17:49:05,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 706 events. 403/706 cut-off events. For 39518/39520 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2976 event pairs, 80 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 5060. Up to 617 conditions per place. [2024-06-20 17:49:05,657 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 115 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-06-20 17:49:05,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 140 transitions, 1593 flow [2024-06-20 17:49:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:49:05,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:49:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 17:49:05,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-20 17:49:05,659 INFO L175 Difference]: Start difference. First operand has 153 places, 128 transitions, 1285 flow. Second operand 8 states and 90 transitions. [2024-06-20 17:49:05,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 140 transitions, 1593 flow [2024-06-20 17:49:05,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 140 transitions, 1529 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 17:49:05,723 INFO L231 Difference]: Finished difference. Result has 154 places, 128 transitions, 1271 flow [2024-06-20 17:49:05,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1271, PETRI_PLACES=154, PETRI_TRANSITIONS=128} [2024-06-20 17:49:05,723 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-20 17:49:05,724 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 128 transitions, 1271 flow [2024-06-20 17:49:05,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:05,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:05,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:05,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 17:49:05,724 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)] === [2024-06-20 17:49:05,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1396648694, now seen corresponding path program 5 times [2024-06-20 17:49:05,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:05,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348100584] [2024-06-20 17:49:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:09,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:09,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:09,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348100584] [2024-06-20 17:49:09,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348100584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:09,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:09,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:09,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794741669] [2024-06-20 17:49:09,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:09,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:09,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:10,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:10,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 128 transitions, 1271 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:10,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:10,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:10,369 INFO L124 PetriNetUnfolderBase]: 419/732 cut-off events. [2024-06-20 17:49:10,369 INFO L125 PetriNetUnfolderBase]: For 43788/43790 co-relation queries the response was YES. [2024-06-20 17:49:10,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5453 conditions, 732 events. 419/732 cut-off events. For 43788/43790 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3122 event pairs, 61 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 5376. Up to 544 conditions per place. [2024-06-20 17:49:10,374 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 100 selfloop transitions, 49 changer transitions 0/151 dead transitions. [2024-06-20 17:49:10,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 1821 flow [2024-06-20 17:49:10,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 17:49:10,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 17:49:10,375 INFO L175 Difference]: Start difference. First operand has 154 places, 128 transitions, 1271 flow. Second operand 9 states and 108 transitions. [2024-06-20 17:49:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 1821 flow [2024-06-20 17:49:10,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 151 transitions, 1739 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 17:49:10,438 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 1388 flow [2024-06-20 17:49:10,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1388, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2024-06-20 17:49:10,438 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-20 17:49:10,438 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 1388 flow [2024-06-20 17:49:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:10,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:10,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:10,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 17:49:10,439 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)] === [2024-06-20 17:49:10,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash 331680210, now seen corresponding path program 2 times [2024-06-20 17:49:10,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:10,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470265035] [2024-06-20 17:49:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:10,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:15,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470265035] [2024-06-20 17:49:15,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470265035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:15,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:15,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037397438] [2024-06-20 17:49:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:15,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:15,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:15,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:15,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:15,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:15,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:15,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:16,028 INFO L124 PetriNetUnfolderBase]: 425/742 cut-off events. [2024-06-20 17:49:16,029 INFO L125 PetriNetUnfolderBase]: For 45862/45864 co-relation queries the response was YES. [2024-06-20 17:49:16,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5614 conditions, 742 events. 425/742 cut-off events. For 45862/45864 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3184 event pairs, 83 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 5537. Up to 647 conditions per place. [2024-06-20 17:49:16,034 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 116 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-06-20 17:49:16,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 149 transitions, 1772 flow [2024-06-20 17:49:16,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:49:16,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:49:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 17:49:16,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-20 17:49:16,035 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 1388 flow. Second operand 10 states and 106 transitions. [2024-06-20 17:49:16,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 149 transitions, 1772 flow [2024-06-20 17:49:16,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1636 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 17:49:16,109 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1361 flow [2024-06-20 17:49:16,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1361, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-20 17:49:16,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-20 17:49:16,109 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1361 flow [2024-06-20 17:49:16,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:16,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:16,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 17:49:16,110 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)] === [2024-06-20 17:49:16,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash 331434132, now seen corresponding path program 6 times [2024-06-20 17:49:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991056263] [2024-06-20 17:49:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991056263] [2024-06-20 17:49:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991056263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:20,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:20,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:20,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132706378] [2024-06-20 17:49:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:20,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:20,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:20,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:20,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1361 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:20,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:20,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:20,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:20,834 INFO L124 PetriNetUnfolderBase]: 421/736 cut-off events. [2024-06-20 17:49:20,834 INFO L125 PetriNetUnfolderBase]: For 44453/44455 co-relation queries the response was YES. [2024-06-20 17:49:20,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 736 events. 421/736 cut-off events. For 44453/44455 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3125 event pairs, 64 based on Foata normal form. 2/737 useless extension candidates. Maximal degree in co-relation 5325. Up to 565 conditions per place. [2024-06-20 17:49:20,840 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-06-20 17:49:20,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 150 transitions, 1709 flow [2024-06-20 17:49:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 17:49:20,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-20 17:49:20,845 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1361 flow. Second operand 9 states and 103 transitions. [2024-06-20 17:49:20,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 150 transitions, 1709 flow [2024-06-20 17:49:20,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 150 transitions, 1590 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 17:49:20,931 INFO L231 Difference]: Finished difference. Result has 159 places, 134 transitions, 1339 flow [2024-06-20 17:49:20,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=159, PETRI_TRANSITIONS=134} [2024-06-20 17:49:20,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-20 17:49:20,932 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 134 transitions, 1339 flow [2024-06-20 17:49:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:20,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:20,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:20,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 17:49:20,932 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)] === [2024-06-20 17:49:20,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 626899410, now seen corresponding path program 3 times [2024-06-20 17:49:20,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:20,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263484360] [2024-06-20 17:49:20,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:20,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263484360] [2024-06-20 17:49:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263484360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748764552] [2024-06-20 17:49:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:27,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:27,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:27,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:27,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 134 transitions, 1339 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:27,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:27,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:27,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:27,861 INFO L124 PetriNetUnfolderBase]: 417/729 cut-off events. [2024-06-20 17:49:27,861 INFO L125 PetriNetUnfolderBase]: For 43264/43264 co-relation queries the response was YES. [2024-06-20 17:49:27,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5278 conditions, 729 events. 417/729 cut-off events. For 43264/43264 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3103 event pairs, 87 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 5200. Up to 686 conditions per place. [2024-06-20 17:49:27,866 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-06-20 17:49:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 146 transitions, 1661 flow [2024-06-20 17:49:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:49:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:49:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-20 17:49:27,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-20 17:49:27,868 INFO L175 Difference]: Start difference. First operand has 159 places, 134 transitions, 1339 flow. Second operand 10 states and 100 transitions. [2024-06-20 17:49:27,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 146 transitions, 1661 flow [2024-06-20 17:49:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 146 transitions, 1548 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-20 17:49:27,953 INFO L231 Difference]: Finished difference. Result has 161 places, 134 transitions, 1267 flow [2024-06-20 17:49:27,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1267, PETRI_PLACES=161, PETRI_TRANSITIONS=134} [2024-06-20 17:49:27,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-20 17:49:27,954 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 134 transitions, 1267 flow [2024-06-20 17:49:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:27,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:27,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 17:49:27,955 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)] === [2024-06-20 17:49:27,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 339714852, now seen corresponding path program 7 times [2024-06-20 17:49:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:27,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8968486] [2024-06-20 17:49:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:32,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:32,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8968486] [2024-06-20 17:49:32,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8968486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:32,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:32,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:49:32,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019001169] [2024-06-20 17:49:32,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:32,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:49:32,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:32,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:49:32,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:49:32,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:32,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 134 transitions, 1267 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:32,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:32,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:32,557 INFO L124 PetriNetUnfolderBase]: 423/739 cut-off events. [2024-06-20 17:49:32,557 INFO L125 PetriNetUnfolderBase]: For 45111/45111 co-relation queries the response was YES. [2024-06-20 17:49:32,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5300 conditions, 739 events. 423/739 cut-off events. For 45111/45111 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3161 event pairs, 87 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 5221. Up to 710 conditions per place. [2024-06-20 17:49:32,563 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 131 selfloop transitions, 14 changer transitions 0/147 dead transitions. [2024-06-20 17:49:32,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 147 transitions, 1635 flow [2024-06-20 17:49:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:32,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-20 17:49:32,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-20 17:49:32,564 INFO L175 Difference]: Start difference. First operand has 161 places, 134 transitions, 1267 flow. Second operand 9 states and 90 transitions. [2024-06-20 17:49:32,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 147 transitions, 1635 flow [2024-06-20 17:49:32,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 147 transitions, 1594 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 17:49:32,639 INFO L231 Difference]: Finished difference. Result has 161 places, 136 transitions, 1311 flow [2024-06-20 17:49:32,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=161, PETRI_TRANSITIONS=136} [2024-06-20 17:49:32,639 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 130 predicate places. [2024-06-20 17:49:32,639 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 136 transitions, 1311 flow [2024-06-20 17:49:32,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:32,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:32,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:32,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 17:49:32,640 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)] === [2024-06-20 17:49:32,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:32,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1404931832, now seen corresponding path program 4 times [2024-06-20 17:49:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24773628] [2024-06-20 17:49:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:38,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:38,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:38,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24773628] [2024-06-20 17:49:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24773628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:38,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791566296] [2024-06-20 17:49:38,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:38,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:38,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:38,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:38,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 136 transitions, 1311 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:38,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:38,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:38,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:39,050 INFO L124 PetriNetUnfolderBase]: 429/749 cut-off events. [2024-06-20 17:49:39,050 INFO L125 PetriNetUnfolderBase]: For 47070/47070 co-relation queries the response was YES. [2024-06-20 17:49:39,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 749 events. 429/749 cut-off events. For 47070/47070 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3220 event pairs, 85 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 5343. Up to 684 conditions per place. [2024-06-20 17:49:39,055 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-06-20 17:49:39,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 1699 flow [2024-06-20 17:49:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:49:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:49:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 17:49:39,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-20 17:49:39,056 INFO L175 Difference]: Start difference. First operand has 161 places, 136 transitions, 1311 flow. Second operand 10 states and 105 transitions. [2024-06-20 17:49:39,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 1699 flow [2024-06-20 17:49:39,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 152 transitions, 1630 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-20 17:49:39,133 INFO L231 Difference]: Finished difference. Result has 164 places, 138 transitions, 1339 flow [2024-06-20 17:49:39,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1339, PETRI_PLACES=164, PETRI_TRANSITIONS=138} [2024-06-20 17:49:39,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-20 17:49:39,133 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 138 transitions, 1339 flow [2024-06-20 17:49:39,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:39,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:39,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:39,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 17:49:39,134 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)] === [2024-06-20 17:49:39,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1430368650, now seen corresponding path program 8 times [2024-06-20 17:49:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748675301] [2024-06-20 17:49:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748675301] [2024-06-20 17:49:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748675301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:43,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:43,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627268245] [2024-06-20 17:49:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:43,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:43,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 138 transitions, 1339 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:43,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:43,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:43,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:43,611 INFO L124 PetriNetUnfolderBase]: 445/776 cut-off events. [2024-06-20 17:49:43,611 INFO L125 PetriNetUnfolderBase]: For 51900/51902 co-relation queries the response was YES. [2024-06-20 17:49:43,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5777 conditions, 776 events. 445/776 cut-off events. For 51900/51902 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3375 event pairs, 80 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 5696. Up to 656 conditions per place. [2024-06-20 17:49:43,616 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 126 selfloop transitions, 31 changer transitions 0/159 dead transitions. [2024-06-20 17:49:43,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 159 transitions, 1919 flow [2024-06-20 17:49:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 17:49:43,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-20 17:49:43,617 INFO L175 Difference]: Start difference. First operand has 164 places, 138 transitions, 1339 flow. Second operand 9 states and 104 transitions. [2024-06-20 17:49:43,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 159 transitions, 1919 flow [2024-06-20 17:49:43,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 159 transitions, 1844 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 17:49:43,710 INFO L231 Difference]: Finished difference. Result has 165 places, 142 transitions, 1439 flow [2024-06-20 17:49:43,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1439, PETRI_PLACES=165, PETRI_TRANSITIONS=142} [2024-06-20 17:49:43,710 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-20 17:49:43,710 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 142 transitions, 1439 flow [2024-06-20 17:49:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:43,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:43,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 17:49:43,711 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)] === [2024-06-20 17:49:43,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash 970098992, now seen corresponding path program 5 times [2024-06-20 17:49:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704832695] [2024-06-20 17:49:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:48,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:48,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704832695] [2024-06-20 17:49:48,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704832695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:48,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:48,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:48,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749435825] [2024-06-20 17:49:48,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:48,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:48,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 142 transitions, 1439 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:48,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:48,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:48,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:49,153 INFO L124 PetriNetUnfolderBase]: 441/770 cut-off events. [2024-06-20 17:49:49,153 INFO L125 PetriNetUnfolderBase]: For 50806/50808 co-relation queries the response was YES. [2024-06-20 17:49:49,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 770 events. 441/770 cut-off events. For 50806/50808 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3331 event pairs, 97 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 5596. Up to 696 conditions per place. [2024-06-20 17:49:49,158 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 22 changer transitions 0/154 dead transitions. [2024-06-20 17:49:49,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 154 transitions, 1781 flow [2024-06-20 17:49:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:49,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 17:49:49,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 17:49:49,159 INFO L175 Difference]: Start difference. First operand has 165 places, 142 transitions, 1439 flow. Second operand 9 states and 96 transitions. [2024-06-20 17:49:49,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 154 transitions, 1781 flow [2024-06-20 17:49:49,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 154 transitions, 1684 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-20 17:49:49,270 INFO L231 Difference]: Finished difference. Result has 169 places, 142 transitions, 1392 flow [2024-06-20 17:49:49,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1392, PETRI_PLACES=169, PETRI_TRANSITIONS=142} [2024-06-20 17:49:49,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-20 17:49:49,271 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 142 transitions, 1392 flow [2024-06-20 17:49:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:49,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:49,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 17:49:49,271 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)] === [2024-06-20 17:49:49,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash 963596804, now seen corresponding path program 9 times [2024-06-20 17:49:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:49,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562934285] [2024-06-20 17:49:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:49,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562934285] [2024-06-20 17:49:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562934285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:53,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:53,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617712821] [2024-06-20 17:49:53,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:53,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:53,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:53,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:53,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 142 transitions, 1392 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:53,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:53,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:53,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:49:54,156 INFO L124 PetriNetUnfolderBase]: 443/774 cut-off events. [2024-06-20 17:49:54,156 INFO L125 PetriNetUnfolderBase]: For 52508/52510 co-relation queries the response was YES. [2024-06-20 17:49:54,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 774 events. 443/774 cut-off events. For 52508/52510 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3354 event pairs, 82 based on Foata normal form. 4/777 useless extension candidates. Maximal degree in co-relation 5513. Up to 646 conditions per place. [2024-06-20 17:49:54,162 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 35 changer transitions 0/160 dead transitions. [2024-06-20 17:49:54,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 160 transitions, 1814 flow [2024-06-20 17:49:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:49:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:49:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 17:49:54,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-20 17:49:54,163 INFO L175 Difference]: Start difference. First operand has 169 places, 142 transitions, 1392 flow. Second operand 9 states and 104 transitions. [2024-06-20 17:49:54,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 160 transitions, 1814 flow [2024-06-20 17:49:54,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 160 transitions, 1686 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-20 17:49:54,258 INFO L231 Difference]: Finished difference. Result has 170 places, 144 transitions, 1402 flow [2024-06-20 17:49:54,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=170, PETRI_TRANSITIONS=144} [2024-06-20 17:49:54,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-20 17:49:54,259 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 144 transitions, 1402 flow [2024-06-20 17:49:54,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:54,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:49:54,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:49:54,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 17:49:54,259 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)] === [2024-06-20 17:49:54,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:49:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash 963603562, now seen corresponding path program 2 times [2024-06-20 17:49:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:49:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430414531] [2024-06-20 17:49:54,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:49:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:49:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:49:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:49:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:49:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430414531] [2024-06-20 17:49:59,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430414531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:49:59,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:49:59,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:49:59,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120695899] [2024-06-20 17:49:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:49:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:49:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:49:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:49:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:49:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:49:59,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 144 transitions, 1402 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:49:59,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:49:59,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:49:59,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:00,462 INFO L124 PetriNetUnfolderBase]: 441/771 cut-off events. [2024-06-20 17:50:00,462 INFO L125 PetriNetUnfolderBase]: For 47824/47826 co-relation queries the response was YES. [2024-06-20 17:50:00,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5519 conditions, 771 events. 441/771 cut-off events. For 47824/47826 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3360 event pairs, 96 based on Foata normal form. 1/771 useless extension candidates. Maximal degree in co-relation 5434. Up to 696 conditions per place. [2024-06-20 17:50:00,467 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 130 selfloop transitions, 26 changer transitions 0/158 dead transitions. [2024-06-20 17:50:00,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 158 transitions, 1796 flow [2024-06-20 17:50:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 17:50:00,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 17:50:00,468 INFO L175 Difference]: Start difference. First operand has 170 places, 144 transitions, 1402 flow. Second operand 9 states and 96 transitions. [2024-06-20 17:50:00,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 158 transitions, 1796 flow [2024-06-20 17:50:00,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 158 transitions, 1680 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:00,565 INFO L231 Difference]: Finished difference. Result has 172 places, 146 transitions, 1394 flow [2024-06-20 17:50:00,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1394, PETRI_PLACES=172, PETRI_TRANSITIONS=146} [2024-06-20 17:50:00,565 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-20 17:50:00,565 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 146 transitions, 1394 flow [2024-06-20 17:50:00,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:00,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:00,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 17:50:00,566 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)] === [2024-06-20 17:50:00,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2028811366, now seen corresponding path program 10 times [2024-06-20 17:50:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296723172] [2024-06-20 17:50:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:04,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:04,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296723172] [2024-06-20 17:50:04,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296723172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:04,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:04,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:50:04,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219744350] [2024-06-20 17:50:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:50:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:04,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:50:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:50:04,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:04,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 146 transitions, 1394 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:04,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:04,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:05,336 INFO L124 PetriNetUnfolderBase]: 447/781 cut-off events. [2024-06-20 17:50:05,336 INFO L125 PetriNetUnfolderBase]: For 51144/51146 co-relation queries the response was YES. [2024-06-20 17:50:05,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 781 events. 447/781 cut-off events. For 51144/51146 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3409 event pairs, 79 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 5495. Up to 619 conditions per place. [2024-06-20 17:50:05,342 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 123 selfloop transitions, 43 changer transitions 0/168 dead transitions. [2024-06-20 17:50:05,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2020 flow [2024-06-20 17:50:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 17:50:05,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-20 17:50:05,343 INFO L175 Difference]: Start difference. First operand has 172 places, 146 transitions, 1394 flow. Second operand 9 states and 107 transitions. [2024-06-20 17:50:05,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2020 flow [2024-06-20 17:50:05,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 168 transitions, 1940 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:05,427 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1532 flow [2024-06-20 17:50:05,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1532, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-20 17:50:05,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-20 17:50:05,428 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1532 flow [2024-06-20 17:50:05,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:05,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:05,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 17:50:05,428 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)] === [2024-06-20 17:50:05,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2028631876, now seen corresponding path program 11 times [2024-06-20 17:50:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554485019] [2024-06-20 17:50:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:09,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:09,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554485019] [2024-06-20 17:50:09,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554485019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:09,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:09,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:50:09,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792752115] [2024-06-20 17:50:09,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:09,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:50:09,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:09,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:50:09,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:50:09,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:09,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1532 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:09,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:09,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:09,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:10,141 INFO L124 PetriNetUnfolderBase]: 443/775 cut-off events. [2024-06-20 17:50:10,141 INFO L125 PetriNetUnfolderBase]: For 49544/49546 co-relation queries the response was YES. [2024-06-20 17:50:10,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5496 conditions, 775 events. 443/775 cut-off events. For 49544/49546 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3379 event pairs, 87 based on Foata normal form. 2/776 useless extension candidates. Maximal degree in co-relation 5409. Up to 676 conditions per place. [2024-06-20 17:50:10,147 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 136 selfloop transitions, 26 changer transitions 0/164 dead transitions. [2024-06-20 17:50:10,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 1896 flow [2024-06-20 17:50:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 17:50:10,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-20 17:50:10,149 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1532 flow. Second operand 9 states and 100 transitions. [2024-06-20 17:50:10,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 1896 flow [2024-06-20 17:50:10,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 164 transitions, 1753 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-20 17:50:10,249 INFO L231 Difference]: Finished difference. Result has 177 places, 150 transitions, 1446 flow [2024-06-20 17:50:10,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1446, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2024-06-20 17:50:10,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-20 17:50:10,250 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 1446 flow [2024-06-20 17:50:10,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:10,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:10,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 17:50:10,251 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)] === [2024-06-20 17:50:10,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:10,251 INFO L85 PathProgramCache]: Analyzing trace with hash -511796247, now seen corresponding path program 1 times [2024-06-20 17:50:10,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:10,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915199090] [2024-06-20 17:50:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:14,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:14,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915199090] [2024-06-20 17:50:14,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915199090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:14,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:50:14,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199655009] [2024-06-20 17:50:14,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:50:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:50:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:50:14,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:14,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 1446 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:14,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:14,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:14,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:14,552 INFO L124 PetriNetUnfolderBase]: 493/870 cut-off events. [2024-06-20 17:50:14,552 INFO L125 PetriNetUnfolderBase]: For 48620/48620 co-relation queries the response was YES. [2024-06-20 17:50:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 870 events. 493/870 cut-off events. For 48620/48620 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3976 event pairs, 79 based on Foata normal form. 2/871 useless extension candidates. Maximal degree in co-relation 5739. Up to 755 conditions per place. [2024-06-20 17:50:14,557 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 164 selfloop transitions, 24 changer transitions 0/190 dead transitions. [2024-06-20 17:50:14,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 190 transitions, 2054 flow [2024-06-20 17:50:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:50:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:50:14,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-20 17:50:14,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-20 17:50:14,559 INFO L175 Difference]: Start difference. First operand has 177 places, 150 transitions, 1446 flow. Second operand 11 states and 119 transitions. [2024-06-20 17:50:14,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 190 transitions, 2054 flow [2024-06-20 17:50:14,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 190 transitions, 1958 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 17:50:14,637 INFO L231 Difference]: Finished difference. Result has 185 places, 166 transitions, 1607 flow [2024-06-20 17:50:14,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1370, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=185, PETRI_TRANSITIONS=166} [2024-06-20 17:50:14,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 154 predicate places. [2024-06-20 17:50:14,638 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 166 transitions, 1607 flow [2024-06-20 17:50:14,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:14,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:14,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:14,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 17:50:14,638 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)] === [2024-06-20 17:50:14,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:14,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1597408327, now seen corresponding path program 2 times [2024-06-20 17:50:14,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:14,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085460472] [2024-06-20 17:50:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:14,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:18,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:18,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085460472] [2024-06-20 17:50:18,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085460472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:18,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:18,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:18,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107061675] [2024-06-20 17:50:18,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:18,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:18,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:18,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:18,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 166 transitions, 1607 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:18,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:18,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:18,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:19,025 INFO L124 PetriNetUnfolderBase]: 497/878 cut-off events. [2024-06-20 17:50:19,026 INFO L125 PetriNetUnfolderBase]: For 50326/50326 co-relation queries the response was YES. [2024-06-20 17:50:19,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 878 events. 497/878 cut-off events. For 50326/50326 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4016 event pairs, 63 based on Foata normal form. 2/879 useless extension candidates. Maximal degree in co-relation 5860. Up to 705 conditions per place. [2024-06-20 17:50:19,033 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 32 changer transitions 0/186 dead transitions. [2024-06-20 17:50:19,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 186 transitions, 2049 flow [2024-06-20 17:50:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:50:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:50:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 17:50:19,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-20 17:50:19,034 INFO L175 Difference]: Start difference. First operand has 185 places, 166 transitions, 1607 flow. Second operand 10 states and 105 transitions. [2024-06-20 17:50:19,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 186 transitions, 2049 flow [2024-06-20 17:50:19,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 186 transitions, 2012 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-20 17:50:19,139 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 1664 flow [2024-06-20 17:50:19,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1664, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2024-06-20 17:50:19,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-20 17:50:19,140 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 1664 flow [2024-06-20 17:50:19,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:19,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:19,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:19,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 17:50:19,140 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)] === [2024-06-20 17:50:19,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 632535685, now seen corresponding path program 3 times [2024-06-20 17:50:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000526402] [2024-06-20 17:50:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:19,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:23,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000526402] [2024-06-20 17:50:23,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000526402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:23,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:23,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:23,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612182044] [2024-06-20 17:50:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:23,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:23,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 1664 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:23,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:23,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:23,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:23,809 INFO L124 PetriNetUnfolderBase]: 501/886 cut-off events. [2024-06-20 17:50:23,809 INFO L125 PetriNetUnfolderBase]: For 52231/52231 co-relation queries the response was YES. [2024-06-20 17:50:23,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 886 events. 501/886 cut-off events. For 52231/52231 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4084 event pairs, 89 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 5982. Up to 767 conditions per place. [2024-06-20 17:50:23,816 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 29 changer transitions 0/185 dead transitions. [2024-06-20 17:50:23,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 185 transitions, 2104 flow [2024-06-20 17:50:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:50:23,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:50:23,819 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 1664 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:50:23,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 185 transitions, 2104 flow [2024-06-20 17:50:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 185 transitions, 2020 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 17:50:23,924 INFO L231 Difference]: Finished difference. Result has 193 places, 168 transitions, 1669 flow [2024-06-20 17:50:23,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1669, PETRI_PLACES=193, PETRI_TRANSITIONS=168} [2024-06-20 17:50:23,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-20 17:50:23,925 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 168 transitions, 1669 flow [2024-06-20 17:50:23,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:23,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:23,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:23,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 17:50:23,925 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)] === [2024-06-20 17:50:23,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 284074049, now seen corresponding path program 4 times [2024-06-20 17:50:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:23,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659536216] [2024-06-20 17:50:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:28,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659536216] [2024-06-20 17:50:28,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659536216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:28,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:28,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:28,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725507120] [2024-06-20 17:50:28,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:28,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:28,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:28,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:28,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:28,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:28,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 168 transitions, 1669 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:28,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:28,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:28,918 INFO L124 PetriNetUnfolderBase]: 505/894 cut-off events. [2024-06-20 17:50:28,918 INFO L125 PetriNetUnfolderBase]: For 53199/53199 co-relation queries the response was YES. [2024-06-20 17:50:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 894 events. 505/894 cut-off events. For 53199/53199 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4150 event pairs, 87 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 5996. Up to 772 conditions per place. [2024-06-20 17:50:28,925 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 157 selfloop transitions, 27 changer transitions 0/186 dead transitions. [2024-06-20 17:50:28,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 186 transitions, 2109 flow [2024-06-20 17:50:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:28,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:28,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 17:50:28,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-20 17:50:28,927 INFO L175 Difference]: Start difference. First operand has 193 places, 168 transitions, 1669 flow. Second operand 9 states and 97 transitions. [2024-06-20 17:50:28,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 186 transitions, 2109 flow [2024-06-20 17:50:29,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 186 transitions, 2034 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:29,035 INFO L231 Difference]: Finished difference. Result has 195 places, 169 transitions, 1679 flow [2024-06-20 17:50:29,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1679, PETRI_PLACES=195, PETRI_TRANSITIONS=169} [2024-06-20 17:50:29,035 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-20 17:50:29,036 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 169 transitions, 1679 flow [2024-06-20 17:50:29,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:29,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:29,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 17:50:29,036 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)] === [2024-06-20 17:50:29,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash 287652844, now seen corresponding path program 1 times [2024-06-20 17:50:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048244899] [2024-06-20 17:50:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:33,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:33,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048244899] [2024-06-20 17:50:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048244899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:33,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:33,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168247518] [2024-06-20 17:50:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:33,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:33,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 169 transitions, 1679 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:33,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:33,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:33,685 INFO L124 PetriNetUnfolderBase]: 503/891 cut-off events. [2024-06-20 17:50:33,686 INFO L125 PetriNetUnfolderBase]: For 50946/50946 co-relation queries the response was YES. [2024-06-20 17:50:33,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 891 events. 503/891 cut-off events. For 50946/50946 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4137 event pairs, 89 based on Foata normal form. 1/891 useless extension candidates. Maximal degree in co-relation 5907. Up to 769 conditions per place. [2024-06-20 17:50:33,693 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 152 selfloop transitions, 32 changer transitions 0/186 dead transitions. [2024-06-20 17:50:33,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 186 transitions, 2099 flow [2024-06-20 17:50:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 17:50:33,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 17:50:33,694 INFO L175 Difference]: Start difference. First operand has 195 places, 169 transitions, 1679 flow. Second operand 9 states and 99 transitions. [2024-06-20 17:50:33,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 186 transitions, 2099 flow [2024-06-20 17:50:33,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 186 transitions, 2008 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:33,804 INFO L231 Difference]: Finished difference. Result has 197 places, 169 transitions, 1660 flow [2024-06-20 17:50:33,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1660, PETRI_PLACES=197, PETRI_TRANSITIONS=169} [2024-06-20 17:50:33,805 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-20 17:50:33,805 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 169 transitions, 1660 flow [2024-06-20 17:50:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:33,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:33,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:33,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 17:50:33,805 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)] === [2024-06-20 17:50:33,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:33,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1434897313, now seen corresponding path program 1 times [2024-06-20 17:50:33,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:33,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717614988] [2024-06-20 17:50:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:39,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:39,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717614988] [2024-06-20 17:50:39,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717614988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:39,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:39,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219712595] [2024-06-20 17:50:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:39,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:39,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:39,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 169 transitions, 1660 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:39,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:39,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:39,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:40,298 INFO L124 PetriNetUnfolderBase]: 509/901 cut-off events. [2024-06-20 17:50:40,298 INFO L125 PetriNetUnfolderBase]: For 54092/54092 co-relation queries the response was YES. [2024-06-20 17:50:40,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6078 conditions, 901 events. 509/901 cut-off events. For 54092/54092 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4203 event pairs, 87 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 5980. Up to 785 conditions per place. [2024-06-20 17:50:40,305 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 27 changer transitions 0/190 dead transitions. [2024-06-20 17:50:40,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 190 transitions, 2144 flow [2024-06-20 17:50:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:50:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:50:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 17:50:40,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-20 17:50:40,306 INFO L175 Difference]: Start difference. First operand has 197 places, 169 transitions, 1660 flow. Second operand 10 states and 108 transitions. [2024-06-20 17:50:40,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 190 transitions, 2144 flow [2024-06-20 17:50:40,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 190 transitions, 2056 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 17:50:40,411 INFO L231 Difference]: Finished difference. Result has 199 places, 171 transitions, 1685 flow [2024-06-20 17:50:40,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1685, PETRI_PLACES=199, PETRI_TRANSITIONS=171} [2024-06-20 17:50:40,411 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-20 17:50:40,411 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 171 transitions, 1685 flow [2024-06-20 17:50:40,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:40,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:40,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:40,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 17:50:40,411 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)] === [2024-06-20 17:50:40,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:40,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1713531, now seen corresponding path program 5 times [2024-06-20 17:50:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:40,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171919185] [2024-06-20 17:50:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:44,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:44,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171919185] [2024-06-20 17:50:44,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171919185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:44,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:44,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:44,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022677820] [2024-06-20 17:50:44,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:44,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:44,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:44,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:44,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:44,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 171 transitions, 1685 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:44,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:44,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:44,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:45,186 INFO L124 PetriNetUnfolderBase]: 513/908 cut-off events. [2024-06-20 17:50:45,186 INFO L125 PetriNetUnfolderBase]: For 56251/56251 co-relation queries the response was YES. [2024-06-20 17:50:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 908 events. 513/908 cut-off events. For 56251/56251 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4232 event pairs, 86 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 6066. Up to 768 conditions per place. [2024-06-20 17:50:45,193 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 35 changer transitions 0/187 dead transitions. [2024-06-20 17:50:45,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 187 transitions, 2123 flow [2024-06-20 17:50:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 17:50:45,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-20 17:50:45,194 INFO L175 Difference]: Start difference. First operand has 199 places, 171 transitions, 1685 flow. Second operand 9 states and 101 transitions. [2024-06-20 17:50:45,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 187 transitions, 2123 flow [2024-06-20 17:50:45,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 187 transitions, 2026 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-20 17:50:45,301 INFO L231 Difference]: Finished difference. Result has 200 places, 172 transitions, 1690 flow [2024-06-20 17:50:45,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1690, PETRI_PLACES=200, PETRI_TRANSITIONS=172} [2024-06-20 17:50:45,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-06-20 17:50:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 172 transitions, 1690 flow [2024-06-20 17:50:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:45,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:45,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:45,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 17:50:45,302 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)] === [2024-06-20 17:50:45,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:45,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2138975135, now seen corresponding path program 6 times [2024-06-20 17:50:45,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:45,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196658327] [2024-06-20 17:50:45,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:45,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:49,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:49,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196658327] [2024-06-20 17:50:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196658327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:49,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198354121] [2024-06-20 17:50:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:49,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:49,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:49,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:49,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:49,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 172 transitions, 1690 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:49,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:49,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:49,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:49,886 INFO L124 PetriNetUnfolderBase]: 517/916 cut-off events. [2024-06-20 17:50:49,886 INFO L125 PetriNetUnfolderBase]: For 59075/59075 co-relation queries the response was YES. [2024-06-20 17:50:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 916 events. 517/916 cut-off events. For 59075/59075 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4294 event pairs, 84 based on Foata normal form. 2/917 useless extension candidates. Maximal degree in co-relation 6123. Up to 776 conditions per place. [2024-06-20 17:50:49,893 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 34 changer transitions 0/188 dead transitions. [2024-06-20 17:50:49,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 188 transitions, 2130 flow [2024-06-20 17:50:49,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:50:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:50:49,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 17:50:49,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-20 17:50:49,895 INFO L175 Difference]: Start difference. First operand has 200 places, 172 transitions, 1690 flow. Second operand 9 states and 100 transitions. [2024-06-20 17:50:49,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 188 transitions, 2130 flow [2024-06-20 17:50:50,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 188 transitions, 2038 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:50,017 INFO L231 Difference]: Finished difference. Result has 202 places, 173 transitions, 1700 flow [2024-06-20 17:50:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1700, PETRI_PLACES=202, PETRI_TRANSITIONS=173} [2024-06-20 17:50:50,018 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-20 17:50:50,018 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 173 transitions, 1700 flow [2024-06-20 17:50:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:50,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:50,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:50,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 17:50:50,018 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)] === [2024-06-20 17:50:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -19997455, now seen corresponding path program 2 times [2024-06-20 17:50:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482454601] [2024-06-20 17:50:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:50,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:50:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:50:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:50:55,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482454601] [2024-06-20 17:50:55,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482454601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:50:55,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:50:55,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:50:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983874472] [2024-06-20 17:50:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:50:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:50:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:50:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:50:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:50:55,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:50:55,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 173 transitions, 1700 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:55,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:50:55,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:50:55,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:50:56,029 INFO L124 PetriNetUnfolderBase]: 523/926 cut-off events. [2024-06-20 17:50:56,029 INFO L125 PetriNetUnfolderBase]: For 60929/60929 co-relation queries the response was YES. [2024-06-20 17:50:56,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6301 conditions, 926 events. 523/926 cut-off events. For 60929/60929 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4369 event pairs, 86 based on Foata normal form. 2/927 useless extension candidates. Maximal degree in co-relation 6200. Up to 776 conditions per place. [2024-06-20 17:50:56,036 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 152 selfloop transitions, 38 changer transitions 0/192 dead transitions. [2024-06-20 17:50:56,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 192 transitions, 2184 flow [2024-06-20 17:50:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:50:56,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:50:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 17:50:56,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 17:50:56,037 INFO L175 Difference]: Start difference. First operand has 202 places, 173 transitions, 1700 flow. Second operand 10 states and 111 transitions. [2024-06-20 17:50:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 192 transitions, 2184 flow [2024-06-20 17:50:56,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 192 transitions, 2092 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-20 17:50:56,161 INFO L231 Difference]: Finished difference. Result has 205 places, 175 transitions, 1747 flow [2024-06-20 17:50:56,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1747, PETRI_PLACES=205, PETRI_TRANSITIONS=175} [2024-06-20 17:50:56,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-20 17:50:56,161 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 175 transitions, 1747 flow [2024-06-20 17:50:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:50:56,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:50:56,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:50:56,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 17:50:56,161 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)] === [2024-06-20 17:50:56,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:50:56,162 INFO L85 PathProgramCache]: Analyzing trace with hash 3792999, now seen corresponding path program 7 times [2024-06-20 17:50:56,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:50:56,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985424775] [2024-06-20 17:50:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:50:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:50:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985424775] [2024-06-20 17:51:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985424775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:00,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:00,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:00,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610576753] [2024-06-20 17:51:00,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:00,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:00,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:00,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:00,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:00,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:00,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 175 transitions, 1747 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:00,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:00,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:00,903 INFO L124 PetriNetUnfolderBase]: 527/934 cut-off events. [2024-06-20 17:51:00,903 INFO L125 PetriNetUnfolderBase]: For 62883/62883 co-relation queries the response was YES. [2024-06-20 17:51:00,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 934 events. 527/934 cut-off events. For 62883/62883 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4410 event pairs, 78 based on Foata normal form. 2/935 useless extension candidates. Maximal degree in co-relation 6289. Up to 760 conditions per place. [2024-06-20 17:51:00,910 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 147 selfloop transitions, 44 changer transitions 0/193 dead transitions. [2024-06-20 17:51:00,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 193 transitions, 2211 flow [2024-06-20 17:51:00,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:51:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:51:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 17:51:00,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-20 17:51:00,911 INFO L175 Difference]: Start difference. First operand has 205 places, 175 transitions, 1747 flow. Second operand 9 states and 103 transitions. [2024-06-20 17:51:00,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 193 transitions, 2211 flow [2024-06-20 17:51:01,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 193 transitions, 2088 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-20 17:51:01,028 INFO L231 Difference]: Finished difference. Result has 206 places, 176 transitions, 1748 flow [2024-06-20 17:51:01,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1748, PETRI_PLACES=206, PETRI_TRANSITIONS=176} [2024-06-20 17:51:01,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-20 17:51:01,029 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 176 transitions, 1748 flow [2024-06-20 17:51:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:01,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:01,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:01,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 17:51:01,030 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)] === [2024-06-20 17:51:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 3798951, now seen corresponding path program 3 times [2024-06-20 17:51:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:01,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802629519] [2024-06-20 17:51:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:06,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:06,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802629519] [2024-06-20 17:51:06,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802629519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:06,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:06,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823265302] [2024-06-20 17:51:06,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:06,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:06,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:06,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:06,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 176 transitions, 1748 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:06,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:06,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:06,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:07,488 INFO L124 PetriNetUnfolderBase]: 533/944 cut-off events. [2024-06-20 17:51:07,488 INFO L125 PetriNetUnfolderBase]: For 64743/64743 co-relation queries the response was YES. [2024-06-20 17:51:07,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6475 conditions, 944 events. 533/944 cut-off events. For 64743/64743 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4474 event pairs, 78 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 6372. Up to 760 conditions per place. [2024-06-20 17:51:07,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 47 changer transitions 0/197 dead transitions. [2024-06-20 17:51:07,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 197 transitions, 2256 flow [2024-06-20 17:51:07,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:07,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 17:51:07,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-20 17:51:07,495 INFO L175 Difference]: Start difference. First operand has 206 places, 176 transitions, 1748 flow. Second operand 10 states and 113 transitions. [2024-06-20 17:51:07,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 197 transitions, 2256 flow [2024-06-20 17:51:07,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 197 transitions, 2142 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-20 17:51:07,610 INFO L231 Difference]: Finished difference. Result has 209 places, 178 transitions, 1795 flow [2024-06-20 17:51:07,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1795, PETRI_PLACES=209, PETRI_TRANSITIONS=178} [2024-06-20 17:51:07,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-20 17:51:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 178 transitions, 1795 flow [2024-06-20 17:51:07,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:07,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:07,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 17:51:07,611 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)] === [2024-06-20 17:51:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 4008480, now seen corresponding path program 1 times [2024-06-20 17:51:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038123971] [2024-06-20 17:51:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:13,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038123971] [2024-06-20 17:51:13,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038123971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:13,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:13,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569988771] [2024-06-20 17:51:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:13,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:13,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 178 transitions, 1795 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:13,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:13,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:13,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:14,553 INFO L124 PetriNetUnfolderBase]: 536/950 cut-off events. [2024-06-20 17:51:14,553 INFO L125 PetriNetUnfolderBase]: For 63984/63984 co-relation queries the response was YES. [2024-06-20 17:51:14,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6530 conditions, 950 events. 536/950 cut-off events. For 63984/63984 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4516 event pairs, 102 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 6426. Up to 850 conditions per place. [2024-06-20 17:51:14,562 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 33 changer transitions 0/197 dead transitions. [2024-06-20 17:51:14,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 197 transitions, 2283 flow [2024-06-20 17:51:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 17:51:14,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-20 17:51:14,563 INFO L175 Difference]: Start difference. First operand has 209 places, 178 transitions, 1795 flow. Second operand 10 states and 107 transitions. [2024-06-20 17:51:14,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 197 transitions, 2283 flow [2024-06-20 17:51:14,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 197 transitions, 2138 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-20 17:51:14,693 INFO L231 Difference]: Finished difference. Result has 211 places, 180 transitions, 1766 flow [2024-06-20 17:51:14,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1766, PETRI_PLACES=211, PETRI_TRANSITIONS=180} [2024-06-20 17:51:14,694 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-06-20 17:51:14,694 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 180 transitions, 1766 flow [2024-06-20 17:51:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:14,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:14,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:14,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 17:51:14,694 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)] === [2024-06-20 17:51:14,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:14,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1449493315, now seen corresponding path program 4 times [2024-06-20 17:51:14,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:14,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169880079] [2024-06-20 17:51:14,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:14,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:21,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:21,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169880079] [2024-06-20 17:51:21,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169880079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:21,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:21,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:51:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557423610] [2024-06-20 17:51:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:21,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:51:21,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:51:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:51:21,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:51:21,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 180 transitions, 1766 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) [2024-06-20 17:51:21,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:21,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:51:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:22,111 INFO L124 PetriNetUnfolderBase]: 552/975 cut-off events. [2024-06-20 17:51:22,111 INFO L125 PetriNetUnfolderBase]: For 73093/73093 co-relation queries the response was YES. [2024-06-20 17:51:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 975 events. 552/975 cut-off events. For 73093/73093 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4627 event pairs, 77 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 6764. Up to 705 conditions per place. [2024-06-20 17:51:22,119 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 67 changer transitions 0/206 dead transitions. [2024-06-20 17:51:22,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 206 transitions, 2512 flow [2024-06-20 17:51:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-20 17:51:22,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 17:51:22,121 INFO L175 Difference]: Start difference. First operand has 211 places, 180 transitions, 1766 flow. Second operand 10 states and 128 transitions. [2024-06-20 17:51:22,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 206 transitions, 2512 flow [2024-06-20 17:51:22,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 206 transitions, 2420 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 17:51:22,279 INFO L231 Difference]: Finished difference. Result has 213 places, 184 transitions, 1942 flow [2024-06-20 17:51:22,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1942, PETRI_PLACES=213, PETRI_TRANSITIONS=184} [2024-06-20 17:51:22,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-06-20 17:51:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 184 transitions, 1942 flow [2024-06-20 17:51:22,280 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) [2024-06-20 17:51:22,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:22,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:22,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 17:51:22,280 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)] === [2024-06-20 17:51:22,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2144693147, now seen corresponding path program 5 times [2024-06-20 17:51:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:22,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322818620] [2024-06-20 17:51:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:27,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:27,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322818620] [2024-06-20 17:51:27,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322818620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:27,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:27,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:27,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957360864] [2024-06-20 17:51:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:27,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:27,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:27,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 184 transitions, 1942 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:27,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:27,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:27,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:28,208 INFO L124 PetriNetUnfolderBase]: 553/977 cut-off events. [2024-06-20 17:51:28,208 INFO L125 PetriNetUnfolderBase]: For 73487/73487 co-relation queries the response was YES. [2024-06-20 17:51:28,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 977 events. 553/977 cut-off events. For 73487/73487 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4653 event pairs, 77 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 6885. Up to 708 conditions per place. [2024-06-20 17:51:28,215 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 65 changer transitions 0/207 dead transitions. [2024-06-20 17:51:28,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 207 transitions, 2628 flow [2024-06-20 17:51:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:28,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 17:51:28,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-20 17:51:28,216 INFO L175 Difference]: Start difference. First operand has 213 places, 184 transitions, 1942 flow. Second operand 10 states and 118 transitions. [2024-06-20 17:51:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 207 transitions, 2628 flow [2024-06-20 17:51:28,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 207 transitions, 2466 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-20 17:51:28,376 INFO L231 Difference]: Finished difference. Result has 217 places, 186 transitions, 1983 flow [2024-06-20 17:51:28,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1983, PETRI_PLACES=217, PETRI_TRANSITIONS=186} [2024-06-20 17:51:28,377 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-20 17:51:28,377 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 186 transitions, 1983 flow [2024-06-20 17:51:28,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:28,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:28,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:28,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 17:51:28,377 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)] === [2024-06-20 17:51:28,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1045212699, now seen corresponding path program 1 times [2024-06-20 17:51:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473944279] [2024-06-20 17:51:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:34,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473944279] [2024-06-20 17:51:34,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473944279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:34,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:34,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454465543] [2024-06-20 17:51:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:34,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:34,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:51:34,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 186 transitions, 1983 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:34,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:34,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:51:34,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:35,083 INFO L124 PetriNetUnfolderBase]: 561/995 cut-off events. [2024-06-20 17:51:35,084 INFO L125 PetriNetUnfolderBase]: For 78051/78051 co-relation queries the response was YES. [2024-06-20 17:51:35,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7074 conditions, 995 events. 561/995 cut-off events. For 78051/78051 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4799 event pairs, 107 based on Foata normal form. 4/998 useless extension candidates. Maximal degree in co-relation 6966. Up to 890 conditions per place. [2024-06-20 17:51:35,092 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 27 changer transitions 0/208 dead transitions. [2024-06-20 17:51:35,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 208 transitions, 2501 flow [2024-06-20 17:51:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:51:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:51:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-20 17:51:35,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-20 17:51:35,093 INFO L175 Difference]: Start difference. First operand has 217 places, 186 transitions, 1983 flow. Second operand 11 states and 126 transitions. [2024-06-20 17:51:35,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 208 transitions, 2501 flow [2024-06-20 17:51:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 208 transitions, 2350 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 17:51:35,250 INFO L231 Difference]: Finished difference. Result has 221 places, 187 transitions, 1922 flow [2024-06-20 17:51:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1922, PETRI_PLACES=221, PETRI_TRANSITIONS=187} [2024-06-20 17:51:35,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-20 17:51:35,251 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 187 transitions, 1922 flow [2024-06-20 17:51:35,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:35,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:35,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:35,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 17:51:35,251 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)] === [2024-06-20 17:51:35,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 546397113, now seen corresponding path program 8 times [2024-06-20 17:51:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517584901] [2024-06-20 17:51:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:39,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:39,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517584901] [2024-06-20 17:51:39,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517584901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:39,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:39,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:39,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701194831] [2024-06-20 17:51:39,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:39,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:39,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:39,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 187 transitions, 1922 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:39,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:39,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:39,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:39,925 INFO L124 PetriNetUnfolderBase]: 565/1002 cut-off events. [2024-06-20 17:51:39,926 INFO L125 PetriNetUnfolderBase]: For 75367/75369 co-relation queries the response was YES. [2024-06-20 17:51:39,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7046 conditions, 1002 events. 565/1002 cut-off events. For 75367/75369 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4802 event pairs, 101 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 6937. Up to 857 conditions per place. [2024-06-20 17:51:39,934 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 163 selfloop transitions, 37 changer transitions 0/202 dead transitions. [2024-06-20 17:51:39,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 202 transitions, 2396 flow [2024-06-20 17:51:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:51:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:51:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:51:39,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:51:39,935 INFO L175 Difference]: Start difference. First operand has 221 places, 187 transitions, 1922 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:51:39,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 202 transitions, 2396 flow [2024-06-20 17:51:40,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 202 transitions, 2315 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 17:51:40,107 INFO L231 Difference]: Finished difference. Result has 221 places, 188 transitions, 1953 flow [2024-06-20 17:51:40,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1953, PETRI_PLACES=221, PETRI_TRANSITIONS=188} [2024-06-20 17:51:40,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-20 17:51:40,109 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 188 transitions, 1953 flow [2024-06-20 17:51:40,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:40,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:40,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 17:51:40,109 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)] === [2024-06-20 17:51:40,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1684733647, now seen corresponding path program 6 times [2024-06-20 17:51:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:40,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739105823] [2024-06-20 17:51:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739105823] [2024-06-20 17:51:45,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739105823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:45,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:45,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:51:45,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782836627] [2024-06-20 17:51:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:45,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:51:45,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:51:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:51:45,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:51:45,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 188 transitions, 1953 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) [2024-06-20 17:51:45,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:45,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:51:45,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:46,179 INFO L124 PetriNetUnfolderBase]: 581/1028 cut-off events. [2024-06-20 17:51:46,179 INFO L125 PetriNetUnfolderBase]: For 83532/83534 co-relation queries the response was YES. [2024-06-20 17:51:46,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7461 conditions, 1028 events. 581/1028 cut-off events. For 83532/83534 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4966 event pairs, 73 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 7351. Up to 764 conditions per place. [2024-06-20 17:51:46,187 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 64 changer transitions 0/214 dead transitions. [2024-06-20 17:51:46,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 214 transitions, 2729 flow [2024-06-20 17:51:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:46,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 17:51:46,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 17:51:46,189 INFO L175 Difference]: Start difference. First operand has 221 places, 188 transitions, 1953 flow. Second operand 10 states and 129 transitions. [2024-06-20 17:51:46,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 214 transitions, 2729 flow [2024-06-20 17:51:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 214 transitions, 2627 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-20 17:51:46,389 INFO L231 Difference]: Finished difference. Result has 224 places, 192 transitions, 2116 flow [2024-06-20 17:51:46,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2116, PETRI_PLACES=224, PETRI_TRANSITIONS=192} [2024-06-20 17:51:46,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-20 17:51:46,390 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 192 transitions, 2116 flow [2024-06-20 17:51:46,390 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) [2024-06-20 17:51:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 17:51:46,390 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)] === [2024-06-20 17:51:46,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:46,391 INFO L85 PathProgramCache]: Analyzing trace with hash 346437451, now seen corresponding path program 7 times [2024-06-20 17:51:46,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:46,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324274551] [2024-06-20 17:51:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:46,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:51,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324274551] [2024-06-20 17:51:51,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324274551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:51,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:51,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:51:51,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595112236] [2024-06-20 17:51:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:51,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:51:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:51,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:51:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:51:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:51:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 192 transitions, 2116 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:51:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:52,545 INFO L124 PetriNetUnfolderBase]: 587/1038 cut-off events. [2024-06-20 17:51:52,545 INFO L125 PetriNetUnfolderBase]: For 86155/86157 co-relation queries the response was YES. [2024-06-20 17:51:52,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 1038 events. 587/1038 cut-off events. For 86155/86157 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5028 event pairs, 73 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 7544. Up to 770 conditions per place. [2024-06-20 17:51:52,552 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 65 changer transitions 0/215 dead transitions. [2024-06-20 17:51:52,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 215 transitions, 2830 flow [2024-06-20 17:51:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:51:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:51:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-20 17:51:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-20 17:51:52,553 INFO L175 Difference]: Start difference. First operand has 224 places, 192 transitions, 2116 flow. Second operand 10 states and 129 transitions. [2024-06-20 17:51:52,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 215 transitions, 2830 flow [2024-06-20 17:51:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 215 transitions, 2665 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-20 17:51:52,754 INFO L231 Difference]: Finished difference. Result has 228 places, 194 transitions, 2154 flow [2024-06-20 17:51:52,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=228, PETRI_TRANSITIONS=194} [2024-06-20 17:51:52,755 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-20 17:51:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 194 transitions, 2154 flow [2024-06-20 17:51:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:52,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:52,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 17:51:52,756 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)] === [2024-06-20 17:51:52,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -962573589, now seen corresponding path program 2 times [2024-06-20 17:51:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:52,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687780164] [2024-06-20 17:51:52,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:51:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:51:58,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:51:58,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687780164] [2024-06-20 17:51:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687780164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:51:58,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:51:58,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:51:58,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989549322] [2024-06-20 17:51:58,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:51:58,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:51:58,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:51:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:51:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:51:58,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:51:58,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 194 transitions, 2154 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:58,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:51:58,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:51:58,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:51:59,011 INFO L124 PetriNetUnfolderBase]: 595/1055 cut-off events. [2024-06-20 17:51:59,011 INFO L125 PetriNetUnfolderBase]: For 93604/93606 co-relation queries the response was YES. [2024-06-20 17:51:59,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7791 conditions, 1055 events. 595/1055 cut-off events. For 93604/93606 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5169 event pairs, 103 based on Foata normal form. 4/1058 useless extension candidates. Maximal degree in co-relation 7678. Up to 929 conditions per place. [2024-06-20 17:51:59,020 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 35 changer transitions 0/214 dead transitions. [2024-06-20 17:51:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 214 transitions, 2680 flow [2024-06-20 17:51:59,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:51:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:51:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-20 17:51:59,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-20 17:51:59,021 INFO L175 Difference]: Start difference. First operand has 228 places, 194 transitions, 2154 flow. Second operand 11 states and 115 transitions. [2024-06-20 17:51:59,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 214 transitions, 2680 flow [2024-06-20 17:51:59,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 214 transitions, 2513 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 17:51:59,206 INFO L231 Difference]: Finished difference. Result has 232 places, 195 transitions, 2095 flow [2024-06-20 17:51:59,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2095, PETRI_PLACES=232, PETRI_TRANSITIONS=195} [2024-06-20 17:51:59,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-20 17:51:59,206 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 195 transitions, 2095 flow [2024-06-20 17:51:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:51:59,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:51:59,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:51:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 17:51:59,207 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)] === [2024-06-20 17:51:59,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:51:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1684518445, now seen corresponding path program 9 times [2024-06-20 17:51:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:51:59,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714672126] [2024-06-20 17:51:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:51:59,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:51:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714672126] [2024-06-20 17:52:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714672126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:03,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:03,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:52:03,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8758946] [2024-06-20 17:52:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:03,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:52:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:52:03,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:52:03,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 195 transitions, 2095 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:03,906 INFO L124 PetriNetUnfolderBase]: 599/1062 cut-off events. [2024-06-20 17:52:03,906 INFO L125 PetriNetUnfolderBase]: For 90229/90231 co-relation queries the response was YES. [2024-06-20 17:52:03,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1062 events. 599/1062 cut-off events. For 90229/90231 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5217 event pairs, 75 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 7648. Up to 843 conditions per place. [2024-06-20 17:52:03,915 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 155 selfloop transitions, 55 changer transitions 0/212 dead transitions. [2024-06-20 17:52:03,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 212 transitions, 2601 flow [2024-06-20 17:52:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:52:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:52:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 17:52:03,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-20 17:52:03,916 INFO L175 Difference]: Start difference. First operand has 232 places, 195 transitions, 2095 flow. Second operand 9 states and 102 transitions. [2024-06-20 17:52:03,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 212 transitions, 2601 flow [2024-06-20 17:52:04,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 212 transitions, 2503 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 17:52:04,121 INFO L231 Difference]: Finished difference. Result has 232 places, 196 transitions, 2147 flow [2024-06-20 17:52:04,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=232, PETRI_TRANSITIONS=196} [2024-06-20 17:52:04,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-20 17:52:04,121 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 196 transitions, 2147 flow [2024-06-20 17:52:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:04,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:04,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 17:52:04,122 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)] === [2024-06-20 17:52:04,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1684524397, now seen corresponding path program 8 times [2024-06-20 17:52:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360902858] [2024-06-20 17:52:04,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:04,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:09,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360902858] [2024-06-20 17:52:09,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360902858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:09,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:09,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:52:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508878206] [2024-06-20 17:52:09,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:52:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:52:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:52:09,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:09,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 196 transitions, 2147 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:09,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:09,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:10,220 INFO L124 PetriNetUnfolderBase]: 595/1056 cut-off events. [2024-06-20 17:52:10,220 INFO L125 PetriNetUnfolderBase]: For 86239/86241 co-relation queries the response was YES. [2024-06-20 17:52:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7604 conditions, 1056 events. 595/1056 cut-off events. For 86239/86241 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5174 event pairs, 75 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 7489. Up to 827 conditions per place. [2024-06-20 17:52:10,229 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 154 selfloop transitions, 58 changer transitions 0/214 dead transitions. [2024-06-20 17:52:10,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 214 transitions, 2631 flow [2024-06-20 17:52:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:52:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:52:10,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 17:52:10,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-20 17:52:10,230 INFO L175 Difference]: Start difference. First operand has 232 places, 196 transitions, 2147 flow. Second operand 10 states and 112 transitions. [2024-06-20 17:52:10,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 214 transitions, 2631 flow [2024-06-20 17:52:10,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 214 transitions, 2445 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-20 17:52:10,442 INFO L231 Difference]: Finished difference. Result has 235 places, 196 transitions, 2082 flow [2024-06-20 17:52:10,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2082, PETRI_PLACES=235, PETRI_TRANSITIONS=196} [2024-06-20 17:52:10,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-20 17:52:10,442 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 196 transitions, 2082 flow [2024-06-20 17:52:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:10,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:10,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:10,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 17:52:10,443 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)] === [2024-06-20 17:52:10,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:10,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1950757977, now seen corresponding path program 3 times [2024-06-20 17:52:10,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:10,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614192375] [2024-06-20 17:52:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:10,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:15,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:15,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614192375] [2024-06-20 17:52:15,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614192375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:15,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:15,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:52:15,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177908518] [2024-06-20 17:52:15,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:15,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:52:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:52:15,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:52:15,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:15,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 196 transitions, 2082 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:15,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:15,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:15,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:15,664 INFO L124 PetriNetUnfolderBase]: 603/1071 cut-off events. [2024-06-20 17:52:15,665 INFO L125 PetriNetUnfolderBase]: For 94069/94069 co-relation queries the response was YES. [2024-06-20 17:52:15,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7622 conditions, 1071 events. 603/1071 cut-off events. For 94069/94069 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5283 event pairs, 139 based on Foata normal form. 4/1074 useless extension candidates. Maximal degree in co-relation 7506. Up to 1009 conditions per place. [2024-06-20 17:52:15,674 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 190 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-06-20 17:52:15,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 212 transitions, 2582 flow [2024-06-20 17:52:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:52:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:52:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 17:52:15,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-20 17:52:15,675 INFO L175 Difference]: Start difference. First operand has 235 places, 196 transitions, 2082 flow. Second operand 11 states and 109 transitions. [2024-06-20 17:52:15,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 212 transitions, 2582 flow [2024-06-20 17:52:15,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 212 transitions, 2450 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-20 17:52:15,883 INFO L231 Difference]: Finished difference. Result has 236 places, 197 transitions, 2030 flow [2024-06-20 17:52:15,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2030, PETRI_PLACES=236, PETRI_TRANSITIONS=197} [2024-06-20 17:52:15,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-20 17:52:15,883 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 197 transitions, 2030 flow [2024-06-20 17:52:15,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:15,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:15,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:15,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 17:52:15,883 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)] === [2024-06-20 17:52:15,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -198781733, now seen corresponding path program 10 times [2024-06-20 17:52:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787481564] [2024-06-20 17:52:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:15,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787481564] [2024-06-20 17:52:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787481564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:19,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:19,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:52:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510084388] [2024-06-20 17:52:19,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:52:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:52:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:52:19,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:19,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 197 transitions, 2030 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:19,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:19,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:19,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:20,358 INFO L124 PetriNetUnfolderBase]: 607/1080 cut-off events. [2024-06-20 17:52:20,358 INFO L125 PetriNetUnfolderBase]: For 90544/90546 co-relation queries the response was YES. [2024-06-20 17:52:20,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7621 conditions, 1080 events. 607/1080 cut-off events. For 90544/90546 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5326 event pairs, 119 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 7504. Up to 939 conditions per place. [2024-06-20 17:52:20,368 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 35 changer transitions 0/212 dead transitions. [2024-06-20 17:52:20,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 212 transitions, 2526 flow [2024-06-20 17:52:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:52:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:52:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 17:52:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 17:52:20,369 INFO L175 Difference]: Start difference. First operand has 236 places, 197 transitions, 2030 flow. Second operand 9 states and 99 transitions. [2024-06-20 17:52:20,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 212 transitions, 2526 flow [2024-06-20 17:52:20,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 212 transitions, 2456 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 17:52:20,580 INFO L231 Difference]: Finished difference. Result has 236 places, 198 transitions, 2072 flow [2024-06-20 17:52:20,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2072, PETRI_PLACES=236, PETRI_TRANSITIONS=198} [2024-06-20 17:52:20,581 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-20 17:52:20,581 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 198 transitions, 2072 flow [2024-06-20 17:52:20,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:20,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:20,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 17:52:20,582 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)] === [2024-06-20 17:52:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 915714809, now seen corresponding path program 9 times [2024-06-20 17:52:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:20,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585766937] [2024-06-20 17:52:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:25,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:25,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585766937] [2024-06-20 17:52:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585766937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:25,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:52:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801655419] [2024-06-20 17:52:25,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:25,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:52:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:52:25,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:52:26,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:52:26,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 198 transitions, 2072 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) [2024-06-20 17:52:26,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:26,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:52:26,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:26,639 INFO L124 PetriNetUnfolderBase]: 629/1115 cut-off events. [2024-06-20 17:52:26,639 INFO L125 PetriNetUnfolderBase]: For 106716/106716 co-relation queries the response was YES. [2024-06-20 17:52:26,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8104 conditions, 1115 events. 629/1115 cut-off events. For 106716/106716 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5544 event pairs, 142 based on Foata normal form. 4/1118 useless extension candidates. Maximal degree in co-relation 7986. Up to 1044 conditions per place. [2024-06-20 17:52:26,649 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 23 changer transitions 0/219 dead transitions. [2024-06-20 17:52:26,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 219 transitions, 2844 flow [2024-06-20 17:52:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:52:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:52:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 17:52:26,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-20 17:52:26,650 INFO L175 Difference]: Start difference. First operand has 236 places, 198 transitions, 2072 flow. Second operand 11 states and 124 transitions. [2024-06-20 17:52:26,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 219 transitions, 2844 flow [2024-06-20 17:52:26,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 219 transitions, 2742 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-20 17:52:26,876 INFO L231 Difference]: Finished difference. Result has 240 places, 203 transitions, 2158 flow [2024-06-20 17:52:26,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=229, 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=2158, PETRI_PLACES=240, PETRI_TRANSITIONS=203} [2024-06-20 17:52:26,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-20 17:52:26,877 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 203 transitions, 2158 flow [2024-06-20 17:52:26,877 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) [2024-06-20 17:52:26,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:26,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 17:52:26,877 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)] === [2024-06-20 17:52:26,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:26,878 INFO L85 PathProgramCache]: Analyzing trace with hash -193275203, now seen corresponding path program 11 times [2024-06-20 17:52:26,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341040587] [2024-06-20 17:52:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:26,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:31,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341040587] [2024-06-20 17:52:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341040587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:31,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:31,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:52:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590720120] [2024-06-20 17:52:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:31,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:52:31,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:31,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:52:31,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:52:31,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:31,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 203 transitions, 2158 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:31,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:31,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:31,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:31,762 INFO L124 PetriNetUnfolderBase]: 633/1124 cut-off events. [2024-06-20 17:52:31,762 INFO L125 PetriNetUnfolderBase]: For 102966/102968 co-relation queries the response was YES. [2024-06-20 17:52:31,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8182 conditions, 1124 events. 633/1124 cut-off events. For 102966/102968 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5595 event pairs, 114 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 8063. Up to 956 conditions per place. [2024-06-20 17:52:31,770 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 175 selfloop transitions, 43 changer transitions 0/220 dead transitions. [2024-06-20 17:52:31,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 220 transitions, 2682 flow [2024-06-20 17:52:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:52:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:52:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 17:52:31,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-20 17:52:31,771 INFO L175 Difference]: Start difference. First operand has 240 places, 203 transitions, 2158 flow. Second operand 9 states and 103 transitions. [2024-06-20 17:52:31,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 220 transitions, 2682 flow [2024-06-20 17:52:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 220 transitions, 2576 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-20 17:52:32,033 INFO L231 Difference]: Finished difference. Result has 242 places, 204 transitions, 2184 flow [2024-06-20 17:52:32,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2184, PETRI_PLACES=242, PETRI_TRANSITIONS=204} [2024-06-20 17:52:32,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-20 17:52:32,033 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 204 transitions, 2184 flow [2024-06-20 17:52:32,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:32,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:32,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:32,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 17:52:32,034 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)] === [2024-06-20 17:52:32,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:32,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2040953811, now seen corresponding path program 4 times [2024-06-20 17:52:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240665583] [2024-06-20 17:52:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:32,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240665583] [2024-06-20 17:52:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240665583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:37,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:37,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:52:37,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31729787] [2024-06-20 17:52:37,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:52:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:37,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:52:37,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:52:37,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:52:37,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 204 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:37,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:37,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:52:37,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:38,158 INFO L124 PetriNetUnfolderBase]: 641/1139 cut-off events. [2024-06-20 17:52:38,158 INFO L125 PetriNetUnfolderBase]: For 111384/111384 co-relation queries the response was YES. [2024-06-20 17:52:38,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 1139 events. 641/1139 cut-off events. For 111384/111384 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5702 event pairs, 142 based on Foata normal form. 4/1142 useless extension candidates. Maximal degree in co-relation 8151. Up to 1061 conditions per place. [2024-06-20 17:52:38,169 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 198 selfloop transitions, 20 changer transitions 0/220 dead transitions. [2024-06-20 17:52:38,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 220 transitions, 2702 flow [2024-06-20 17:52:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:52:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:52:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 17:52:38,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-20 17:52:38,170 INFO L175 Difference]: Start difference. First operand has 242 places, 204 transitions, 2184 flow. Second operand 11 states and 120 transitions. [2024-06-20 17:52:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 220 transitions, 2702 flow [2024-06-20 17:52:38,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 220 transitions, 2582 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 17:52:38,429 INFO L231 Difference]: Finished difference. Result has 246 places, 205 transitions, 2148 flow [2024-06-20 17:52:38,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2064, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2148, PETRI_PLACES=246, PETRI_TRANSITIONS=205} [2024-06-20 17:52:38,430 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-20 17:52:38,430 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 205 transitions, 2148 flow [2024-06-20 17:52:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:38,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:38,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:38,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 17:52:38,430 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)] === [2024-06-20 17:52:38,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:38,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1537074209, now seen corresponding path program 12 times [2024-06-20 17:52:38,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:38,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918747092] [2024-06-20 17:52:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:38,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918747092] [2024-06-20 17:52:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918747092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:42,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:42,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:52:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046176885] [2024-06-20 17:52:42,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:52:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:52:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:52:42,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:42,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 205 transitions, 2148 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:42,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:42,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:42,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:42,727 INFO L124 PetriNetUnfolderBase]: 638/1135 cut-off events. [2024-06-20 17:52:42,727 INFO L125 PetriNetUnfolderBase]: For 97346/97348 co-relation queries the response was YES. [2024-06-20 17:52:42,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7949 conditions, 1135 events. 638/1135 cut-off events. For 97346/97348 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5669 event pairs, 123 based on Foata normal form. 2/1136 useless extension candidates. Maximal degree in co-relation 7827. Up to 994 conditions per place. [2024-06-20 17:52:42,738 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-20 17:52:42,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 219 transitions, 2620 flow [2024-06-20 17:52:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 17:52:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 17:52:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 17:52:42,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-20 17:52:42,739 INFO L175 Difference]: Start difference. First operand has 246 places, 205 transitions, 2148 flow. Second operand 9 states and 98 transitions. [2024-06-20 17:52:42,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 219 transitions, 2620 flow [2024-06-20 17:52:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 219 transitions, 2548 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 17:52:42,985 INFO L231 Difference]: Finished difference. Result has 246 places, 205 transitions, 2148 flow [2024-06-20 17:52:42,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2148, PETRI_PLACES=246, PETRI_TRANSITIONS=205} [2024-06-20 17:52:42,986 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-20 17:52:42,986 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 205 transitions, 2148 flow [2024-06-20 17:52:42,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:42,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:42,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 17:52:42,986 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)] === [2024-06-20 17:52:42,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2029525971, now seen corresponding path program 5 times [2024-06-20 17:52:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:42,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047695566] [2024-06-20 17:52:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:42,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:47,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047695566] [2024-06-20 17:52:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047695566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:47,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:47,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:52:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700984701] [2024-06-20 17:52:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:47,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:52:47,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:47,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:52:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:52:47,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:47,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 205 transitions, 2148 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:47,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:47,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:47,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:48,011 INFO L124 PetriNetUnfolderBase]: 646/1150 cut-off events. [2024-06-20 17:52:48,011 INFO L125 PetriNetUnfolderBase]: For 103974/103974 co-relation queries the response was YES. [2024-06-20 17:52:48,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8032 conditions, 1150 events. 646/1150 cut-off events. For 103974/103974 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5788 event pairs, 143 based on Foata normal form. 4/1153 useless extension candidates. Maximal degree in co-relation 7909. Up to 1050 conditions per place. [2024-06-20 17:52:48,020 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 199 selfloop transitions, 21 changer transitions 0/222 dead transitions. [2024-06-20 17:52:48,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 222 transitions, 2672 flow [2024-06-20 17:52:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:52:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:52:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 17:52:48,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3096590909090909 [2024-06-20 17:52:48,021 INFO L175 Difference]: Start difference. First operand has 246 places, 205 transitions, 2148 flow. Second operand 11 states and 109 transitions. [2024-06-20 17:52:48,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 222 transitions, 2672 flow [2024-06-20 17:52:48,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 222 transitions, 2527 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 17:52:48,282 INFO L231 Difference]: Finished difference. Result has 249 places, 206 transitions, 2087 flow [2024-06-20 17:52:48,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2087, PETRI_PLACES=249, PETRI_TRANSITIONS=206} [2024-06-20 17:52:48,283 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-20 17:52:48,283 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 206 transitions, 2087 flow [2024-06-20 17:52:48,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:48,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:48,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:48,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 17:52:48,284 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)] === [2024-06-20 17:52:48,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:48,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1531558007, now seen corresponding path program 10 times [2024-06-20 17:52:48,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:48,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050762824] [2024-06-20 17:52:48,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:48,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:52:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:52:53,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:52:53,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050762824] [2024-06-20 17:52:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050762824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:52:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:52:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:52:53,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924128106] [2024-06-20 17:52:53,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:52:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:52:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:52:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:52:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:52:53,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:52:53,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 206 transitions, 2087 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:53,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:52:53,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:52:53,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:52:54,352 INFO L124 PetriNetUnfolderBase]: 652/1161 cut-off events. [2024-06-20 17:52:54,352 INFO L125 PetriNetUnfolderBase]: For 99579/99581 co-relation queries the response was YES. [2024-06-20 17:52:54,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8035 conditions, 1161 events. 652/1161 cut-off events. For 99579/99581 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5860 event pairs, 121 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 7911. Up to 977 conditions per place. [2024-06-20 17:52:54,368 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 47 changer transitions 0/226 dead transitions. [2024-06-20 17:52:54,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 226 transitions, 2665 flow [2024-06-20 17:52:54,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:52:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:52:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 17:52:54,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-20 17:52:54,369 INFO L175 Difference]: Start difference. First operand has 249 places, 206 transitions, 2087 flow. Second operand 10 states and 113 transitions. [2024-06-20 17:52:54,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 226 transitions, 2665 flow [2024-06-20 17:52:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 226 transitions, 2537 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-20 17:52:54,665 INFO L231 Difference]: Finished difference. Result has 248 places, 208 transitions, 2135 flow [2024-06-20 17:52:54,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2135, PETRI_PLACES=248, PETRI_TRANSITIONS=208} [2024-06-20 17:52:54,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-20 17:52:54,666 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 208 transitions, 2135 flow [2024-06-20 17:52:54,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:52:54,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:52:54,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:52:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 17:52:54,666 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)] === [2024-06-20 17:52:54,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:52:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash 8029249, now seen corresponding path program 11 times [2024-06-20 17:52:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:52:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215075598] [2024-06-20 17:52:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:52:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:52:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215075598] [2024-06-20 17:53:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215075598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 17:53:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433282935] [2024-06-20 17:53:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:00,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 17:53:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 17:53:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-20 17:53:00,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:53:00,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 208 transitions, 2135 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:00,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:00,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:53:00,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:01,039 INFO L124 PetriNetUnfolderBase]: 674/1197 cut-off events. [2024-06-20 17:53:01,039 INFO L125 PetriNetUnfolderBase]: For 110347/110349 co-relation queries the response was YES. [2024-06-20 17:53:01,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8540 conditions, 1197 events. 674/1197 cut-off events. For 110347/110349 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6088 event pairs, 123 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8417. Up to 1003 conditions per place. [2024-06-20 17:53:01,049 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 48 changer transitions 0/234 dead transitions. [2024-06-20 17:53:01,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 234 transitions, 3059 flow [2024-06-20 17:53:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 17:53:01,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 17:53:01,050 INFO L175 Difference]: Start difference. First operand has 248 places, 208 transitions, 2135 flow. Second operand 10 states and 125 transitions. [2024-06-20 17:53:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 234 transitions, 3059 flow [2024-06-20 17:53:01,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 234 transitions, 2835 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-20 17:53:01,345 INFO L231 Difference]: Finished difference. Result has 251 places, 214 transitions, 2253 flow [2024-06-20 17:53:01,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2253, PETRI_PLACES=251, PETRI_TRANSITIONS=214} [2024-06-20 17:53:01,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-20 17:53:01,346 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 214 transitions, 2253 flow [2024-06-20 17:53:01,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:01,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:01,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:01,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 17:53:01,346 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)] === [2024-06-20 17:53:01,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1337416787, now seen corresponding path program 12 times [2024-06-20 17:53:01,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946741507] [2024-06-20 17:53:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:01,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:06,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:06,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946741507] [2024-06-20 17:53:06,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946741507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:06,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:06,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:53:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801467740] [2024-06-20 17:53:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:06,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:53:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:53:06,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:53:06,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:53:06,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 214 transitions, 2253 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) [2024-06-20 17:53:06,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:06,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:53:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:07,135 INFO L124 PetriNetUnfolderBase]: 670/1191 cut-off events. [2024-06-20 17:53:07,135 INFO L125 PetriNetUnfolderBase]: For 104847/104849 co-relation queries the response was YES. [2024-06-20 17:53:07,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8216 conditions, 1191 events. 670/1191 cut-off events. For 104847/104849 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6066 event pairs, 120 based on Foata normal form. 2/1192 useless extension candidates. Maximal degree in co-relation 8091. Up to 1000 conditions per place. [2024-06-20 17:53:07,148 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2024-06-20 17:53:07,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 232 transitions, 2773 flow [2024-06-20 17:53:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:07,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 17:53:07,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-20 17:53:07,149 INFO L175 Difference]: Start difference. First operand has 251 places, 214 transitions, 2253 flow. Second operand 10 states and 124 transitions. [2024-06-20 17:53:07,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 232 transitions, 2773 flow [2024-06-20 17:53:07,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 232 transitions, 2587 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-20 17:53:07,434 INFO L231 Difference]: Finished difference. Result has 255 places, 214 transitions, 2166 flow [2024-06-20 17:53:07,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2166, PETRI_PLACES=255, PETRI_TRANSITIONS=214} [2024-06-20 17:53:07,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-20 17:53:07,435 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 214 transitions, 2166 flow [2024-06-20 17:53:07,435 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) [2024-06-20 17:53:07,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:07,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:07,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 17:53:07,435 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)] === [2024-06-20 17:53:07,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1536920387, now seen corresponding path program 13 times [2024-06-20 17:53:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697465069] [2024-06-20 17:53:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:07,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:12,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697465069] [2024-06-20 17:53:12,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697465069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:12,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:12,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847937498] [2024-06-20 17:53:12,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:12,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:12,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:12,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:12,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:12,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 214 transitions, 2166 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:12,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:12,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:12,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:12,895 INFO L124 PetriNetUnfolderBase]: 676/1201 cut-off events. [2024-06-20 17:53:12,895 INFO L125 PetriNetUnfolderBase]: For 106465/106467 co-relation queries the response was YES. [2024-06-20 17:53:12,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8281 conditions, 1201 events. 676/1201 cut-off events. For 106465/106467 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6108 event pairs, 135 based on Foata normal form. 2/1202 useless extension candidates. Maximal degree in co-relation 8154. Up to 1050 conditions per place. [2024-06-20 17:53:12,906 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 38 changer transitions 0/232 dead transitions. [2024-06-20 17:53:12,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 232 transitions, 2752 flow [2024-06-20 17:53:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 17:53:12,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-20 17:53:12,907 INFO L175 Difference]: Start difference. First operand has 255 places, 214 transitions, 2166 flow. Second operand 10 states and 109 transitions. [2024-06-20 17:53:12,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 232 transitions, 2752 flow [2024-06-20 17:53:13,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 232 transitions, 2661 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-20 17:53:13,195 INFO L231 Difference]: Finished difference. Result has 258 places, 216 transitions, 2238 flow [2024-06-20 17:53:13,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2238, PETRI_PLACES=258, PETRI_TRANSITIONS=216} [2024-06-20 17:53:13,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-20 17:53:13,195 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 216 transitions, 2238 flow [2024-06-20 17:53:13,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:13,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:13,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 17:53:13,196 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)] === [2024-06-20 17:53:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -308843289, now seen corresponding path program 6 times [2024-06-20 17:53:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:13,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188759536] [2024-06-20 17:53:13,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:20,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188759536] [2024-06-20 17:53:20,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188759536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:20,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:20,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:20,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632943788] [2024-06-20 17:53:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:20,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:20,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:20,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:20,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:20,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 216 transitions, 2238 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:20,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:20,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:20,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:21,661 INFO L124 PetriNetUnfolderBase]: 684/1218 cut-off events. [2024-06-20 17:53:21,662 INFO L125 PetriNetUnfolderBase]: For 117314/117316 co-relation queries the response was YES. [2024-06-20 17:53:21,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8419 conditions, 1218 events. 684/1218 cut-off events. For 117314/117316 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6279 event pairs, 144 based on Foata normal form. 4/1221 useless extension candidates. Maximal degree in co-relation 8291. Up to 1113 conditions per place. [2024-06-20 17:53:21,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 27 changer transitions 0/235 dead transitions. [2024-06-20 17:53:21,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 235 transitions, 2804 flow [2024-06-20 17:53:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:53:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:53:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 17:53:21,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-20 17:53:21,673 INFO L175 Difference]: Start difference. First operand has 258 places, 216 transitions, 2238 flow. Second operand 11 states and 113 transitions. [2024-06-20 17:53:21,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 235 transitions, 2804 flow [2024-06-20 17:53:21,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 235 transitions, 2657 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-20 17:53:21,976 INFO L231 Difference]: Finished difference. Result has 261 places, 217 transitions, 2187 flow [2024-06-20 17:53:21,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2187, PETRI_PLACES=261, PETRI_TRANSITIONS=217} [2024-06-20 17:53:21,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-20 17:53:21,976 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 217 transitions, 2187 flow [2024-06-20 17:53:21,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:21,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:21,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:21,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 17:53:21,977 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)] === [2024-06-20 17:53:21,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1778700361, now seen corresponding path program 14 times [2024-06-20 17:53:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48912965] [2024-06-20 17:53:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48912965] [2024-06-20 17:53:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48912965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:27,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:27,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510921088] [2024-06-20 17:53:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:27,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:27,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:27,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:27,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:27,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 217 transitions, 2187 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:27,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:27,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:27,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:28,147 INFO L124 PetriNetUnfolderBase]: 700/1243 cut-off events. [2024-06-20 17:53:28,147 INFO L125 PetriNetUnfolderBase]: For 121329/121331 co-relation queries the response was YES. [2024-06-20 17:53:28,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8833 conditions, 1243 events. 700/1243 cut-off events. For 121329/121331 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6407 event pairs, 75 based on Foata normal form. 2/1244 useless extension candidates. Maximal degree in co-relation 8704. Up to 547 conditions per place. [2024-06-20 17:53:28,159 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 106 changer transitions 0/248 dead transitions. [2024-06-20 17:53:28,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 248 transitions, 3407 flow [2024-06-20 17:53:28,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:28,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 17:53:28,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-20 17:53:28,160 INFO L175 Difference]: Start difference. First operand has 261 places, 217 transitions, 2187 flow. Second operand 10 states and 125 transitions. [2024-06-20 17:53:28,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 248 transitions, 3407 flow [2024-06-20 17:53:28,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 248 transitions, 3318 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 17:53:28,476 INFO L231 Difference]: Finished difference. Result has 264 places, 223 transitions, 2612 flow [2024-06-20 17:53:28,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2612, PETRI_PLACES=264, PETRI_TRANSITIONS=223} [2024-06-20 17:53:28,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-20 17:53:28,477 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 223 transitions, 2612 flow [2024-06-20 17:53:28,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:28,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:28,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:28,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 17:53:28,477 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)] === [2024-06-20 17:53:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:28,478 INFO L85 PathProgramCache]: Analyzing trace with hash -510209369, now seen corresponding path program 15 times [2024-06-20 17:53:28,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:28,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169929902] [2024-06-20 17:53:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:28,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:33,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:33,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169929902] [2024-06-20 17:53:33,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169929902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:33,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762322776] [2024-06-20 17:53:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:33,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:33,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 223 transitions, 2612 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:33,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:33,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:34,567 INFO L124 PetriNetUnfolderBase]: 706/1253 cut-off events. [2024-06-20 17:53:34,567 INFO L125 PetriNetUnfolderBase]: For 125129/125131 co-relation queries the response was YES. [2024-06-20 17:53:34,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9339 conditions, 1253 events. 706/1253 cut-off events. For 125129/125131 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6479 event pairs, 124 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 9207. Up to 984 conditions per place. [2024-06-20 17:53:34,580 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 66 changer transitions 0/247 dead transitions. [2024-06-20 17:53:34,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 247 transitions, 3524 flow [2024-06-20 17:53:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:34,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 17:53:34,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-20 17:53:34,581 INFO L175 Difference]: Start difference. First operand has 264 places, 223 transitions, 2612 flow. Second operand 10 states and 118 transitions. [2024-06-20 17:53:34,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 247 transitions, 3524 flow [2024-06-20 17:53:34,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 247 transitions, 3325 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-20 17:53:34,898 INFO L231 Difference]: Finished difference. Result has 269 places, 227 transitions, 2737 flow [2024-06-20 17:53:34,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2737, PETRI_PLACES=269, PETRI_TRANSITIONS=227} [2024-06-20 17:53:34,898 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-20 17:53:34,898 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 227 transitions, 2737 flow [2024-06-20 17:53:34,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:34,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:34,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:34,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 17:53:34,898 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)] === [2024-06-20 17:53:34,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash -713499749, now seen corresponding path program 16 times [2024-06-20 17:53:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408928705] [2024-06-20 17:53:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:39,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:39,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408928705] [2024-06-20 17:53:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408928705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:53:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078963694] [2024-06-20 17:53:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:53:39,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:53:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:53:40,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:40,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 227 transitions, 2737 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:40,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:40,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:40,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:40,673 INFO L124 PetriNetUnfolderBase]: 748/1323 cut-off events. [2024-06-20 17:53:40,674 INFO L125 PetriNetUnfolderBase]: For 124444/124448 co-relation queries the response was YES. [2024-06-20 17:53:40,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9659 conditions, 1323 events. 748/1323 cut-off events. For 124444/124448 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6924 event pairs, 103 based on Foata normal form. 6/1328 useless extension candidates. Maximal degree in co-relation 9525. Up to 915 conditions per place. [2024-06-20 17:53:40,684 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 196 selfloop transitions, 62 changer transitions 0/260 dead transitions. [2024-06-20 17:53:40,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 260 transitions, 3666 flow [2024-06-20 17:53:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 17:53:40,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-20 17:53:40,686 INFO L175 Difference]: Start difference. First operand has 269 places, 227 transitions, 2737 flow. Second operand 10 states and 116 transitions. [2024-06-20 17:53:40,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 260 transitions, 3666 flow [2024-06-20 17:53:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 260 transitions, 3441 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-20 17:53:41,033 INFO L231 Difference]: Finished difference. Result has 274 places, 236 transitions, 2849 flow [2024-06-20 17:53:41,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2849, PETRI_PLACES=274, PETRI_TRANSITIONS=236} [2024-06-20 17:53:41,034 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-20 17:53:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 236 transitions, 2849 flow [2024-06-20 17:53:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:41,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 17:53:41,034 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)] === [2024-06-20 17:53:41,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash 602025499, now seen corresponding path program 7 times [2024-06-20 17:53:41,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:41,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400556006] [2024-06-20 17:53:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:46,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:46,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400556006] [2024-06-20 17:53:46,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400556006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:46,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:46,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:46,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64831612] [2024-06-20 17:53:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:46,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:46,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 236 transitions, 2849 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:46,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:46,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:46,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:47,275 INFO L124 PetriNetUnfolderBase]: 749/1325 cut-off events. [2024-06-20 17:53:47,276 INFO L125 PetriNetUnfolderBase]: For 123406/123406 co-relation queries the response was YES. [2024-06-20 17:53:47,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9600 conditions, 1325 events. 749/1325 cut-off events. For 123406/123406 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6947 event pairs, 165 based on Foata normal form. 4/1328 useless extension candidates. Maximal degree in co-relation 9463. Up to 1241 conditions per place. [2024-06-20 17:53:47,286 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 24 changer transitions 0/254 dead transitions. [2024-06-20 17:53:47,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 254 transitions, 3447 flow [2024-06-20 17:53:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:53:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:53:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-20 17:53:47,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-20 17:53:47,287 INFO L175 Difference]: Start difference. First operand has 274 places, 236 transitions, 2849 flow. Second operand 11 states and 114 transitions. [2024-06-20 17:53:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 254 transitions, 3447 flow [2024-06-20 17:53:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 254 transitions, 3371 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-20 17:53:47,653 INFO L231 Difference]: Finished difference. Result has 278 places, 237 transitions, 2863 flow [2024-06-20 17:53:47,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2773, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2863, PETRI_PLACES=278, PETRI_TRANSITIONS=237} [2024-06-20 17:53:47,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-20 17:53:47,654 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 237 transitions, 2863 flow [2024-06-20 17:53:47,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:47,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:47,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 17:53:47,654 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)] === [2024-06-20 17:53:47,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348757, now seen corresponding path program 17 times [2024-06-20 17:53:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136183238] [2024-06-20 17:53:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136183238] [2024-06-20 17:53:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136183238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:52,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:52,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:53:52,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590271589] [2024-06-20 17:53:52,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:52,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:53:52,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:53:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:53:52,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:53:52,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 237 transitions, 2863 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) [2024-06-20 17:53:52,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:52,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:53:52,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:53:53,294 INFO L124 PetriNetUnfolderBase]: 745/1320 cut-off events. [2024-06-20 17:53:53,294 INFO L125 PetriNetUnfolderBase]: For 110003/110005 co-relation queries the response was YES. [2024-06-20 17:53:53,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9324 conditions, 1320 events. 745/1320 cut-off events. For 110003/110005 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6928 event pairs, 132 based on Foata normal form. 2/1321 useless extension candidates. Maximal degree in co-relation 9186. Up to 1054 conditions per place. [2024-06-20 17:53:53,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 186 selfloop transitions, 69 changer transitions 0/257 dead transitions. [2024-06-20 17:53:53,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 257 transitions, 3443 flow [2024-06-20 17:53:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:53:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:53:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-20 17:53:53,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-20 17:53:53,305 INFO L175 Difference]: Start difference. First operand has 278 places, 237 transitions, 2863 flow. Second operand 10 states and 127 transitions. [2024-06-20 17:53:53,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 257 transitions, 3443 flow [2024-06-20 17:53:53,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 257 transitions, 3305 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-20 17:53:53,661 INFO L231 Difference]: Finished difference. Result has 279 places, 237 transitions, 2871 flow [2024-06-20 17:53:53,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2871, PETRI_PLACES=279, PETRI_TRANSITIONS=237} [2024-06-20 17:53:53,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-20 17:53:53,662 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 237 transitions, 2871 flow [2024-06-20 17:53:53,662 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) [2024-06-20 17:53:53,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:53:53,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:53:53,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 17:53:53,662 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)] === [2024-06-20 17:53:53,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:53:53,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1531348478, now seen corresponding path program 2 times [2024-06-20 17:53:53,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:53:53,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329705621] [2024-06-20 17:53:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:53:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:53:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:53:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:53:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:53:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329705621] [2024-06-20 17:53:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329705621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:53:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:53:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:53:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104191836] [2024-06-20 17:53:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:53:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:53:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:53:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:53:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:53:59,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:53:59,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 237 transitions, 2871 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:53:59,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:53:59,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:53:59,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:00,211 INFO L124 PetriNetUnfolderBase]: 743/1318 cut-off events. [2024-06-20 17:54:00,211 INFO L125 PetriNetUnfolderBase]: For 102864/102866 co-relation queries the response was YES. [2024-06-20 17:54:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 1318 events. 743/1318 cut-off events. For 102864/102866 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6905 event pairs, 159 based on Foata normal form. 1/1318 useless extension candidates. Maximal degree in co-relation 9078. Up to 1217 conditions per place. [2024-06-20 17:54:00,224 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 33 changer transitions 0/254 dead transitions. [2024-06-20 17:54:00,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 254 transitions, 3484 flow [2024-06-20 17:54:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 17:54:00,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-20 17:54:00,225 INFO L175 Difference]: Start difference. First operand has 279 places, 237 transitions, 2871 flow. Second operand 10 states and 105 transitions. [2024-06-20 17:54:00,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 254 transitions, 3484 flow [2024-06-20 17:54:00,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 254 transitions, 3333 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-20 17:54:00,568 INFO L231 Difference]: Finished difference. Result has 279 places, 239 transitions, 2853 flow [2024-06-20 17:54:00,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2853, PETRI_PLACES=279, PETRI_TRANSITIONS=239} [2024-06-20 17:54:00,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-20 17:54:00,569 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 239 transitions, 2853 flow [2024-06-20 17:54:00,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:00,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:00,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:00,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 17:54:00,570 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)] === [2024-06-20 17:54:00,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1475571929, now seen corresponding path program 1 times [2024-06-20 17:54:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:00,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093534222] [2024-06-20 17:54:00,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:00,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:05,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093534222] [2024-06-20 17:54:05,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093534222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:05,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:05,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315601235] [2024-06-20 17:54:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:05,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:05,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 239 transitions, 2853 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:05,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:05,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:05,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:05,731 INFO L124 PetriNetUnfolderBase]: 747/1325 cut-off events. [2024-06-20 17:54:05,731 INFO L125 PetriNetUnfolderBase]: For 106744/106744 co-relation queries the response was YES. [2024-06-20 17:54:05,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1325 events. 747/1325 cut-off events. For 106744/106744 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6956 event pairs, 119 based on Foata normal form. 2/1326 useless extension candidates. Maximal degree in co-relation 9040. Up to 1140 conditions per place. [2024-06-20 17:54:05,744 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 33 changer transitions 0/261 dead transitions. [2024-06-20 17:54:05,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 261 transitions, 3455 flow [2024-06-20 17:54:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:54:05,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:54:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 17:54:05,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-20 17:54:05,745 INFO L175 Difference]: Start difference. First operand has 279 places, 239 transitions, 2853 flow. Second operand 11 states and 113 transitions. [2024-06-20 17:54:05,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 261 transitions, 3455 flow [2024-06-20 17:54:06,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 261 transitions, 3353 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:06,097 INFO L231 Difference]: Finished difference. Result has 282 places, 240 transitions, 2852 flow [2024-06-20 17:54:06,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2852, PETRI_PLACES=282, PETRI_TRANSITIONS=240} [2024-06-20 17:54:06,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-20 17:54:06,098 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 240 transitions, 2852 flow [2024-06-20 17:54:06,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:06,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:06,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:06,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 17:54:06,099 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)] === [2024-06-20 17:54:06,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:06,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1866224729, now seen corresponding path program 2 times [2024-06-20 17:54:06,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:06,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250995051] [2024-06-20 17:54:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:06,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:10,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:10,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250995051] [2024-06-20 17:54:10,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250995051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:10,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:10,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:10,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505687222] [2024-06-20 17:54:10,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:10,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:10,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:10,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:10,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:10,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 240 transitions, 2852 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:10,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:10,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:10,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:10,961 INFO L124 PetriNetUnfolderBase]: 751/1333 cut-off events. [2024-06-20 17:54:10,961 INFO L125 PetriNetUnfolderBase]: For 109130/109130 co-relation queries the response was YES. [2024-06-20 17:54:10,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 1333 events. 751/1333 cut-off events. For 109130/109130 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7029 event pairs, 146 based on Foata normal form. 2/1334 useless extension candidates. Maximal degree in co-relation 9137. Up to 1203 conditions per place. [2024-06-20 17:54:10,975 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 225 selfloop transitions, 33 changer transitions 0/260 dead transitions. [2024-06-20 17:54:10,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 260 transitions, 3454 flow [2024-06-20 17:54:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 17:54:10,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-20 17:54:10,977 INFO L175 Difference]: Start difference. First operand has 282 places, 240 transitions, 2852 flow. Second operand 10 states and 107 transitions. [2024-06-20 17:54:10,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 260 transitions, 3454 flow [2024-06-20 17:54:11,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 260 transitions, 3365 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 17:54:11,332 INFO L231 Difference]: Finished difference. Result has 283 places, 241 transitions, 2866 flow [2024-06-20 17:54:11,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2763, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2866, PETRI_PLACES=283, PETRI_TRANSITIONS=241} [2024-06-20 17:54:11,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-20 17:54:11,333 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 241 transitions, 2866 flow [2024-06-20 17:54:11,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:11,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:11,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:11,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 17:54:11,333 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)] === [2024-06-20 17:54:11,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1866229379, now seen corresponding path program 3 times [2024-06-20 17:54:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:11,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700020045] [2024-06-20 17:54:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:16,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:16,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700020045] [2024-06-20 17:54:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700020045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:16,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395100487] [2024-06-20 17:54:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:16,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:16,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 241 transitions, 2866 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:16,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:16,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:16,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:17,166 INFO L124 PetriNetUnfolderBase]: 755/1341 cut-off events. [2024-06-20 17:54:17,166 INFO L125 PetriNetUnfolderBase]: For 113140/113140 co-relation queries the response was YES. [2024-06-20 17:54:17,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 1341 events. 755/1341 cut-off events. For 113140/113140 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7088 event pairs, 146 based on Foata normal form. 2/1342 useless extension candidates. Maximal degree in co-relation 9190. Up to 1214 conditions per place. [2024-06-20 17:54:17,180 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 229 selfloop transitions, 30 changer transitions 0/261 dead transitions. [2024-06-20 17:54:17,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 261 transitions, 3470 flow [2024-06-20 17:54:17,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:17,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 17:54:17,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-20 17:54:17,184 INFO L175 Difference]: Start difference. First operand has 283 places, 241 transitions, 2866 flow. Second operand 10 states and 106 transitions. [2024-06-20 17:54:17,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 261 transitions, 3470 flow [2024-06-20 17:54:17,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 261 transitions, 3379 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:17,573 INFO L231 Difference]: Finished difference. Result has 285 places, 242 transitions, 2873 flow [2024-06-20 17:54:17,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2775, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2873, PETRI_PLACES=285, PETRI_TRANSITIONS=242} [2024-06-20 17:54:17,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-20 17:54:17,574 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 242 transitions, 2873 flow [2024-06-20 17:54:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:17,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:17,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 17:54:17,575 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)] === [2024-06-20 17:54:17,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1866344699, now seen corresponding path program 4 times [2024-06-20 17:54:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:17,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464652889] [2024-06-20 17:54:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:21,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464652889] [2024-06-20 17:54:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464652889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128715168] [2024-06-20 17:54:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:21,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:21,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:22,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:22,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 242 transitions, 2873 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:22,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:22,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:22,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:22,718 INFO L124 PetriNetUnfolderBase]: 759/1349 cut-off events. [2024-06-20 17:54:22,718 INFO L125 PetriNetUnfolderBase]: For 115688/115688 co-relation queries the response was YES. [2024-06-20 17:54:22,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9387 conditions, 1349 events. 759/1349 cut-off events. For 115688/115688 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7148 event pairs, 144 based on Foata normal form. 2/1350 useless extension candidates. Maximal degree in co-relation 9245. Up to 1219 conditions per place. [2024-06-20 17:54:22,732 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 232 selfloop transitions, 28 changer transitions 0/262 dead transitions. [2024-06-20 17:54:22,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 262 transitions, 3479 flow [2024-06-20 17:54:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 17:54:22,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-20 17:54:22,733 INFO L175 Difference]: Start difference. First operand has 285 places, 242 transitions, 2873 flow. Second operand 10 states and 105 transitions. [2024-06-20 17:54:22,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 262 transitions, 3479 flow [2024-06-20 17:54:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 262 transitions, 3391 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:23,142 INFO L231 Difference]: Finished difference. Result has 287 places, 243 transitions, 2881 flow [2024-06-20 17:54:23,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2881, PETRI_PLACES=287, PETRI_TRANSITIONS=243} [2024-06-20 17:54:23,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-20 17:54:23,144 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 243 transitions, 2881 flow [2024-06-20 17:54:23,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:23,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:23,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:23,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 17:54:23,145 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)] === [2024-06-20 17:54:23,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:23,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1317628995, now seen corresponding path program 1 times [2024-06-20 17:54:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743912734] [2024-06-20 17:54:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:30,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743912734] [2024-06-20 17:54:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743912734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:30,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:54:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730328894] [2024-06-20 17:54:30,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:30,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:54:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:30,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:54:30,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:54:30,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:30,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 243 transitions, 2881 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:30,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:30,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:30,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:31,583 INFO L124 PetriNetUnfolderBase]: 765/1359 cut-off events. [2024-06-20 17:54:31,583 INFO L125 PetriNetUnfolderBase]: For 117562/117562 co-relation queries the response was YES. [2024-06-20 17:54:31,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9475 conditions, 1359 events. 765/1359 cut-off events. For 117562/117562 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7224 event pairs, 147 based on Foata normal form. 2/1360 useless extension candidates. Maximal degree in co-relation 9332. Up to 1235 conditions per place. [2024-06-20 17:54:31,596 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 235 selfloop transitions, 29 changer transitions 0/266 dead transitions. [2024-06-20 17:54:31,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 266 transitions, 3547 flow [2024-06-20 17:54:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:54:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:54:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 17:54:31,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-20 17:54:31,597 INFO L175 Difference]: Start difference. First operand has 287 places, 243 transitions, 2881 flow. Second operand 11 states and 117 transitions. [2024-06-20 17:54:31,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 266 transitions, 3547 flow [2024-06-20 17:54:32,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 266 transitions, 3461 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:32,003 INFO L231 Difference]: Finished difference. Result has 290 places, 245 transitions, 2936 flow [2024-06-20 17:54:32,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2936, PETRI_PLACES=290, PETRI_TRANSITIONS=245} [2024-06-20 17:54:32,003 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-20 17:54:32,004 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 245 transitions, 2936 flow [2024-06-20 17:54:32,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:32,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:32,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:32,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 17:54:32,004 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)] === [2024-06-20 17:54:32,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:32,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1536791203, now seen corresponding path program 1 times [2024-06-20 17:54:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:32,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696188231] [2024-06-20 17:54:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:37,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:37,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696188231] [2024-06-20 17:54:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696188231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:37,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:37,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:37,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263607575] [2024-06-20 17:54:37,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:37,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:37,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:37,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:37,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:37,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 245 transitions, 2936 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:37,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:37,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:37,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:38,419 INFO L124 PetriNetUnfolderBase]: 763/1356 cut-off events. [2024-06-20 17:54:38,419 INFO L125 PetriNetUnfolderBase]: For 110154/110154 co-relation queries the response was YES. [2024-06-20 17:54:38,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9329 conditions, 1356 events. 763/1356 cut-off events. For 110154/110154 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7193 event pairs, 146 based on Foata normal form. 1/1356 useless extension candidates. Maximal degree in co-relation 9185. Up to 1223 conditions per place. [2024-06-20 17:54:38,433 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 36 changer transitions 0/264 dead transitions. [2024-06-20 17:54:38,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 264 transitions, 3518 flow [2024-06-20 17:54:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 17:54:38,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-20 17:54:38,435 INFO L175 Difference]: Start difference. First operand has 290 places, 245 transitions, 2936 flow. Second operand 10 states and 108 transitions. [2024-06-20 17:54:38,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 264 transitions, 3518 flow [2024-06-20 17:54:38,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 264 transitions, 3367 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-20 17:54:38,925 INFO L231 Difference]: Finished difference. Result has 291 places, 245 transitions, 2865 flow [2024-06-20 17:54:38,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2865, PETRI_PLACES=291, PETRI_TRANSITIONS=245} [2024-06-20 17:54:38,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-20 17:54:38,925 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 245 transitions, 2865 flow [2024-06-20 17:54:38,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:38,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:38,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:38,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 17:54:38,925 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)] === [2024-06-20 17:54:38,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1883840581, now seen corresponding path program 5 times [2024-06-20 17:54:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213407369] [2024-06-20 17:54:38,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213407369] [2024-06-20 17:54:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213407369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:43,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:43,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:54:43,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427917267] [2024-06-20 17:54:43,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:43,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:54:43,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:43,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:54:43,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:54:43,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:43,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 245 transitions, 2865 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:43,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:43,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:43,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:44,222 INFO L124 PetriNetUnfolderBase]: 767/1363 cut-off events. [2024-06-20 17:54:44,222 INFO L125 PetriNetUnfolderBase]: For 117651/117651 co-relation queries the response was YES. [2024-06-20 17:54:44,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9349 conditions, 1363 events. 767/1363 cut-off events. For 117651/117651 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7267 event pairs, 141 based on Foata normal form. 2/1364 useless extension candidates. Maximal degree in co-relation 9204. Up to 1215 conditions per place. [2024-06-20 17:54:44,236 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 37 changer transitions 0/263 dead transitions. [2024-06-20 17:54:44,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 263 transitions, 3471 flow [2024-06-20 17:54:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:44,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:44,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 17:54:44,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-20 17:54:44,238 INFO L175 Difference]: Start difference. First operand has 291 places, 245 transitions, 2865 flow. Second operand 10 states and 110 transitions. [2024-06-20 17:54:44,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 263 transitions, 3471 flow [2024-06-20 17:54:44,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 263 transitions, 3345 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 17:54:44,640 INFO L231 Difference]: Finished difference. Result has 291 places, 246 transitions, 2855 flow [2024-06-20 17:54:44,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2855, PETRI_PLACES=291, PETRI_TRANSITIONS=246} [2024-06-20 17:54:44,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-20 17:54:44,641 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 246 transitions, 2855 flow [2024-06-20 17:54:44,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:44,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:44,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 17:54:44,642 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)] === [2024-06-20 17:54:44,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1883835931, now seen corresponding path program 6 times [2024-06-20 17:54:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:44,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913230708] [2024-06-20 17:54:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:44,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913230708] [2024-06-20 17:54:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913230708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:49,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:49,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:54:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562156096] [2024-06-20 17:54:49,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:49,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:54:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:54:49,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:54:49,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:49,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 246 transitions, 2855 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:49,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:49,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:49,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:50,553 INFO L124 PetriNetUnfolderBase]: 771/1371 cut-off events. [2024-06-20 17:54:50,553 INFO L125 PetriNetUnfolderBase]: For 120992/120992 co-relation queries the response was YES. [2024-06-20 17:54:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9412 conditions, 1371 events. 771/1371 cut-off events. For 120992/120992 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7323 event pairs, 139 based on Foata normal form. 2/1372 useless extension candidates. Maximal degree in co-relation 9266. Up to 1223 conditions per place. [2024-06-20 17:54:50,567 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 36 changer transitions 0/264 dead transitions. [2024-06-20 17:54:50,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 264 transitions, 3463 flow [2024-06-20 17:54:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 17:54:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-20 17:54:50,568 INFO L175 Difference]: Start difference. First operand has 291 places, 246 transitions, 2855 flow. Second operand 10 states and 109 transitions. [2024-06-20 17:54:50,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 264 transitions, 3463 flow [2024-06-20 17:54:50,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 264 transitions, 3357 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:50,938 INFO L231 Difference]: Finished difference. Result has 293 places, 247 transitions, 2865 flow [2024-06-20 17:54:50,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2865, PETRI_PLACES=293, PETRI_TRANSITIONS=247} [2024-06-20 17:54:50,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-20 17:54:50,938 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 247 transitions, 2865 flow [2024-06-20 17:54:50,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:54:50,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:50,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 17:54:50,939 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)] === [2024-06-20 17:54:50,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2054543011, now seen corresponding path program 7 times [2024-06-20 17:54:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:50,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946742648] [2024-06-20 17:54:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:54:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:54:55,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:54:55,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946742648] [2024-06-20 17:54:55,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946742648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:54:55,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:54:55,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:54:55,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203783182] [2024-06-20 17:54:55,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:54:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:54:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:54:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:54:55,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:54:56,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:54:56,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 247 transitions, 2865 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:56,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:54:56,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:54:56,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:54:56,631 INFO L124 PetriNetUnfolderBase]: 775/1379 cut-off events. [2024-06-20 17:54:56,631 INFO L125 PetriNetUnfolderBase]: For 123484/123484 co-relation queries the response was YES. [2024-06-20 17:54:56,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9469 conditions, 1379 events. 775/1379 cut-off events. For 123484/123484 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7364 event pairs, 125 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 9322. Up to 1183 conditions per place. [2024-06-20 17:54:56,646 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 216 selfloop transitions, 49 changer transitions 0/267 dead transitions. [2024-06-20 17:54:56,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 267 transitions, 3493 flow [2024-06-20 17:54:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:54:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:54:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 17:54:56,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-20 17:54:56,648 INFO L175 Difference]: Start difference. First operand has 293 places, 247 transitions, 2865 flow. Second operand 10 states and 112 transitions. [2024-06-20 17:54:56,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 267 transitions, 3493 flow [2024-06-20 17:54:57,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 267 transitions, 3387 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-20 17:54:57,116 INFO L231 Difference]: Finished difference. Result has 295 places, 248 transitions, 2904 flow [2024-06-20 17:54:57,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2759, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2904, PETRI_PLACES=295, PETRI_TRANSITIONS=248} [2024-06-20 17:54:57,116 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-20 17:54:57,116 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 248 transitions, 2904 flow [2024-06-20 17:54:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:54:57,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:54:57,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:54:57,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 17:54:57,117 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)] === [2024-06-20 17:54:57,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:54:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -453686397, now seen corresponding path program 2 times [2024-06-20 17:54:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:54:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137416612] [2024-06-20 17:54:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:54:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:54:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:03,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:03,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137416612] [2024-06-20 17:55:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137416612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:03,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201855450] [2024-06-20 17:55:03,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:03,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:03,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:03,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:03,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:03,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:03,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 248 transitions, 2904 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:03,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:03,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:03,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:04,687 INFO L124 PetriNetUnfolderBase]: 787/1399 cut-off events. [2024-06-20 17:55:04,688 INFO L125 PetriNetUnfolderBase]: For 136738/136738 co-relation queries the response was YES. [2024-06-20 17:55:04,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9698 conditions, 1399 events. 787/1399 cut-off events. For 136738/136738 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7513 event pairs, 125 based on Foata normal form. 4/1402 useless extension candidates. Maximal degree in co-relation 9550. Up to 1179 conditions per place. [2024-06-20 17:55:04,699 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 55 changer transitions 0/273 dead transitions. [2024-06-20 17:55:04,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 3662 flow [2024-06-20 17:55:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:55:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:55:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 17:55:04,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-20 17:55:04,700 INFO L175 Difference]: Start difference. First operand has 295 places, 248 transitions, 2904 flow. Second operand 11 states and 122 transitions. [2024-06-20 17:55:04,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 3662 flow [2024-06-20 17:55:05,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 273 transitions, 3529 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 17:55:05,147 INFO L231 Difference]: Finished difference. Result has 298 places, 252 transitions, 3046 flow [2024-06-20 17:55:05,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2771, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3046, PETRI_PLACES=298, PETRI_TRANSITIONS=252} [2024-06-20 17:55:05,147 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-20 17:55:05,147 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 252 transitions, 3046 flow [2024-06-20 17:55:05,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:05,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:05,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 17:55:05,148 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)] === [2024-06-20 17:55:05,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1888489155, now seen corresponding path program 3 times [2024-06-20 17:55:05,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:05,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140145270] [2024-06-20 17:55:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:05,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:11,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140145270] [2024-06-20 17:55:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140145270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880762580] [2024-06-20 17:55:11,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:11,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:11,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:11,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:11,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:11,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 252 transitions, 3046 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:11,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:11,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:11,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:12,492 INFO L124 PetriNetUnfolderBase]: 793/1409 cut-off events. [2024-06-20 17:55:12,492 INFO L125 PetriNetUnfolderBase]: For 129511/129511 co-relation queries the response was YES. [2024-06-20 17:55:12,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9823 conditions, 1409 events. 793/1409 cut-off events. For 129511/129511 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7583 event pairs, 147 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 9674. Up to 1251 conditions per place. [2024-06-20 17:55:12,509 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2024-06-20 17:55:12,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 273 transitions, 3726 flow [2024-06-20 17:55:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:55:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:55:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 17:55:12,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-20 17:55:12,510 INFO L175 Difference]: Start difference. First operand has 298 places, 252 transitions, 3046 flow. Second operand 11 states and 120 transitions. [2024-06-20 17:55:12,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 273 transitions, 3726 flow [2024-06-20 17:55:12,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 273 transitions, 3499 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-20 17:55:12,897 INFO L231 Difference]: Finished difference. Result has 300 places, 254 transitions, 2990 flow [2024-06-20 17:55:12,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2819, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2990, PETRI_PLACES=300, PETRI_TRANSITIONS=254} [2024-06-20 17:55:12,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-20 17:55:12,897 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 254 transitions, 2990 flow [2024-06-20 17:55:12,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:12,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:12,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:12,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 17:55:12,898 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)] === [2024-06-20 17:55:12,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 117583835, now seen corresponding path program 8 times [2024-06-20 17:55:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377976119] [2024-06-20 17:55:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:18,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:18,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377976119] [2024-06-20 17:55:18,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377976119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:18,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:18,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:18,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574465028] [2024-06-20 17:55:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:18,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:18,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:18,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:18,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:18,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:18,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 254 transitions, 2990 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:18,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:18,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:18,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:19,212 INFO L124 PetriNetUnfolderBase]: 797/1417 cut-off events. [2024-06-20 17:55:19,212 INFO L125 PetriNetUnfolderBase]: For 131234/131234 co-relation queries the response was YES. [2024-06-20 17:55:19,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9771 conditions, 1417 events. 797/1417 cut-off events. For 131234/131234 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7636 event pairs, 125 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 9621. Up to 1229 conditions per place. [2024-06-20 17:55:19,227 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 225 selfloop transitions, 47 changer transitions 0/274 dead transitions. [2024-06-20 17:55:19,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 274 transitions, 3632 flow [2024-06-20 17:55:19,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:55:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:55:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 17:55:19,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 17:55:19,228 INFO L175 Difference]: Start difference. First operand has 300 places, 254 transitions, 2990 flow. Second operand 10 states and 111 transitions. [2024-06-20 17:55:19,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 274 transitions, 3632 flow [2024-06-20 17:55:19,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 274 transitions, 3483 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-20 17:55:19,667 INFO L231 Difference]: Finished difference. Result has 301 places, 255 transitions, 2983 flow [2024-06-20 17:55:19,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2983, PETRI_PLACES=301, PETRI_TRANSITIONS=255} [2024-06-20 17:55:19,667 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-20 17:55:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 255 transitions, 2983 flow [2024-06-20 17:55:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:19,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:19,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 17:55:19,668 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)] === [2024-06-20 17:55:19,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash -53233915, now seen corresponding path program 9 times [2024-06-20 17:55:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380518560] [2024-06-20 17:55:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:23,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:23,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380518560] [2024-06-20 17:55:23,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380518560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:23,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:23,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:55:23,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110922643] [2024-06-20 17:55:23,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:23,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:55:23,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:55:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:55:23,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:23,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 255 transitions, 2983 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:55:23,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:23,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:23,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:24,177 INFO L124 PetriNetUnfolderBase]: 801/1425 cut-off events. [2024-06-20 17:55:24,177 INFO L125 PetriNetUnfolderBase]: For 133900/133900 co-relation queries the response was YES. [2024-06-20 17:55:24,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9838 conditions, 1425 events. 801/1425 cut-off events. For 133900/133900 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7717 event pairs, 145 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 9687. Up to 1277 conditions per place. [2024-06-20 17:55:24,192 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 236 selfloop transitions, 35 changer transitions 0/273 dead transitions. [2024-06-20 17:55:24,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 273 transitions, 3613 flow [2024-06-20 17:55:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:55:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:55:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 17:55:24,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-20 17:55:24,194 INFO L175 Difference]: Start difference. First operand has 301 places, 255 transitions, 2983 flow. Second operand 10 states and 108 transitions. [2024-06-20 17:55:24,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 273 transitions, 3613 flow [2024-06-20 17:55:24,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 273 transitions, 3481 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-20 17:55:24,620 INFO L231 Difference]: Finished difference. Result has 303 places, 256 transitions, 2971 flow [2024-06-20 17:55:24,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2971, PETRI_PLACES=303, PETRI_TRANSITIONS=256} [2024-06-20 17:55:24,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 272 predicate places. [2024-06-20 17:55:24,621 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 256 transitions, 2971 flow [2024-06-20 17:55:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:55:24,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:24,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 17:55:24,621 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)] === [2024-06-20 17:55:24,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash 124017575, now seen corresponding path program 10 times [2024-06-20 17:55:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006012627] [2024-06-20 17:55:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:29,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006012627] [2024-06-20 17:55:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006012627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:29,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:29,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530906409] [2024-06-20 17:55:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:29,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:29,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:29,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 256 transitions, 2971 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:29,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:29,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:29,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:30,384 INFO L124 PetriNetUnfolderBase]: 805/1433 cut-off events. [2024-06-20 17:55:30,384 INFO L125 PetriNetUnfolderBase]: For 136762/136762 co-relation queries the response was YES. [2024-06-20 17:55:30,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9867 conditions, 1433 events. 805/1433 cut-off events. For 136762/136762 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7763 event pairs, 123 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 9715. Up to 1195 conditions per place. [2024-06-20 17:55:30,400 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 215 selfloop transitions, 60 changer transitions 0/277 dead transitions. [2024-06-20 17:55:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 277 transitions, 3631 flow [2024-06-20 17:55:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:55:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:55:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 17:55:30,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 17:55:30,402 INFO L175 Difference]: Start difference. First operand has 303 places, 256 transitions, 2971 flow. Second operand 10 states and 114 transitions. [2024-06-20 17:55:30,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 277 transitions, 3631 flow [2024-06-20 17:55:30,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 277 transitions, 3521 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 17:55:30,841 INFO L231 Difference]: Finished difference. Result has 305 places, 257 transitions, 3034 flow [2024-06-20 17:55:30,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3034, PETRI_PLACES=305, PETRI_TRANSITIONS=257} [2024-06-20 17:55:30,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-20 17:55:30,841 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 257 transitions, 3034 flow [2024-06-20 17:55:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:30,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:30,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:30,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 17:55:30,842 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)] === [2024-06-20 17:55:30,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 124255159, now seen corresponding path program 4 times [2024-06-20 17:55:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:30,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297097817] [2024-06-20 17:55:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:30,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:37,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:37,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:37,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297097817] [2024-06-20 17:55:37,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297097817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:37,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:37,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:37,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848921247] [2024-06-20 17:55:37,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:37,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:37,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:37,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:37,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 257 transitions, 3034 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:37,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:37,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:37,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:38,663 INFO L124 PetriNetUnfolderBase]: 849/1505 cut-off events. [2024-06-20 17:55:38,664 INFO L125 PetriNetUnfolderBase]: For 198930/198930 co-relation queries the response was YES. [2024-06-20 17:55:38,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11172 conditions, 1505 events. 849/1505 cut-off events. For 198930/198930 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8208 event pairs, 123 based on Foata normal form. 8/1512 useless extension candidates. Maximal degree in co-relation 11019. Up to 1106 conditions per place. [2024-06-20 17:55:38,682 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 93 changer transitions 0/293 dead transitions. [2024-06-20 17:55:38,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 293 transitions, 4392 flow [2024-06-20 17:55:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:55:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:55:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 17:55:38,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-20 17:55:38,683 INFO L175 Difference]: Start difference. First operand has 305 places, 257 transitions, 3034 flow. Second operand 11 states and 130 transitions. [2024-06-20 17:55:38,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 293 transitions, 4392 flow [2024-06-20 17:55:39,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 293 transitions, 4231 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-20 17:55:39,178 INFO L231 Difference]: Finished difference. Result has 309 places, 269 transitions, 3573 flow [2024-06-20 17:55:39,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2873, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3573, PETRI_PLACES=309, PETRI_TRANSITIONS=269} [2024-06-20 17:55:39,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-20 17:55:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 269 transitions, 3573 flow [2024-06-20 17:55:39,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:39,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:39,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 17:55:39,179 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)] === [2024-06-20 17:55:39,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:39,179 INFO L85 PathProgramCache]: Analyzing trace with hash 124024519, now seen corresponding path program 5 times [2024-06-20 17:55:39,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816429197] [2024-06-20 17:55:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:39,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:47,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:47,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816429197] [2024-06-20 17:55:47,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816429197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:47,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:47,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801794827] [2024-06-20 17:55:47,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:47,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:47,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:47,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:47,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 269 transitions, 3573 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:47,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:47,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:47,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:48,277 INFO L124 PetriNetUnfolderBase]: 846/1501 cut-off events. [2024-06-20 17:55:48,278 INFO L125 PetriNetUnfolderBase]: For 166872/166872 co-relation queries the response was YES. [2024-06-20 17:55:48,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10989 conditions, 1501 events. 846/1501 cut-off events. For 166872/166872 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8212 event pairs, 127 based on Foata normal form. 4/1504 useless extension candidates. Maximal degree in co-relation 10834. Up to 1239 conditions per place. [2024-06-20 17:55:48,294 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 66 changer transitions 0/293 dead transitions. [2024-06-20 17:55:48,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 293 transitions, 4317 flow [2024-06-20 17:55:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:55:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:55:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 17:55:48,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-20 17:55:48,294 INFO L175 Difference]: Start difference. First operand has 309 places, 269 transitions, 3573 flow. Second operand 11 states and 124 transitions. [2024-06-20 17:55:48,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 293 transitions, 4317 flow [2024-06-20 17:55:48,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 293 transitions, 3911 flow, removed 160 selfloop flow, removed 7 redundant places. [2024-06-20 17:55:48,815 INFO L231 Difference]: Finished difference. Result has 313 places, 271 transitions, 3400 flow [2024-06-20 17:55:48,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3185, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3400, PETRI_PLACES=313, PETRI_TRANSITIONS=271} [2024-06-20 17:55:48,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 282 predicate places. [2024-06-20 17:55:48,815 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 271 transitions, 3400 flow [2024-06-20 17:55:48,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:48,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:48,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:48,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 17:55:48,816 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)] === [2024-06-20 17:55:48,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash -447190967, now seen corresponding path program 1 times [2024-06-20 17:55:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:48,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826969467] [2024-06-20 17:55:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:48,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:55:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:55:55,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:55:55,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826969467] [2024-06-20 17:55:55,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826969467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:55:55,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:55:55,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:55:55,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231395975] [2024-06-20 17:55:55,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:55:55,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:55:55,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:55:55,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:55:55,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:55:55,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:55:55,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 271 transitions, 3400 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:55:55,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:55:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:55:56,261 INFO L124 PetriNetUnfolderBase]: 850/1510 cut-off events. [2024-06-20 17:55:56,261 INFO L125 PetriNetUnfolderBase]: For 151361/151361 co-relation queries the response was YES. [2024-06-20 17:55:56,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 1510 events. 850/1510 cut-off events. For 151361/151361 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8266 event pairs, 174 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 10655. Up to 1388 conditions per place. [2024-06-20 17:55:56,278 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 255 selfloop transitions, 35 changer transitions 0/292 dead transitions. [2024-06-20 17:55:56,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 292 transitions, 4090 flow [2024-06-20 17:55:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:55:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:55:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-20 17:55:56,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-20 17:55:56,281 INFO L175 Difference]: Start difference. First operand has 313 places, 271 transitions, 3400 flow. Second operand 11 states and 116 transitions. [2024-06-20 17:55:56,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 292 transitions, 4090 flow [2024-06-20 17:55:56,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 292 transitions, 3865 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-20 17:55:56,764 INFO L231 Difference]: Finished difference. Result has 315 places, 272 transitions, 3293 flow [2024-06-20 17:55:56,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3293, PETRI_PLACES=315, PETRI_TRANSITIONS=272} [2024-06-20 17:55:56,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-20 17:55:56,764 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 272 transitions, 3293 flow [2024-06-20 17:55:56,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:55:56,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:55:56,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:55:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 17:55:56,765 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)] === [2024-06-20 17:55:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:55:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash -250537083, now seen corresponding path program 11 times [2024-06-20 17:55:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:55:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627411651] [2024-06-20 17:55:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:55:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:55:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:00,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627411651] [2024-06-20 17:56:00,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627411651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:00,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:00,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:56:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115710359] [2024-06-20 17:56:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:56:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:56:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:56:00,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:00,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 272 transitions, 3293 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:00,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:00,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:00,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:01,318 INFO L124 PetriNetUnfolderBase]: 854/1517 cut-off events. [2024-06-20 17:56:01,318 INFO L125 PetriNetUnfolderBase]: For 153829/153829 co-relation queries the response was YES. [2024-06-20 17:56:01,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10741 conditions, 1517 events. 854/1517 cut-off events. For 153829/153829 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8338 event pairs, 196 based on Foata normal form. 2/1518 useless extension candidates. Maximal degree in co-relation 10584. Up to 1479 conditions per place. [2024-06-20 17:56:01,335 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 15 changer transitions 0/286 dead transitions. [2024-06-20 17:56:01,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 286 transitions, 3945 flow [2024-06-20 17:56:01,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:56:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:56:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-06-20 17:56:01,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30625 [2024-06-20 17:56:01,337 INFO L175 Difference]: Start difference. First operand has 315 places, 272 transitions, 3293 flow. Second operand 10 states and 98 transitions. [2024-06-20 17:56:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 286 transitions, 3945 flow [2024-06-20 17:56:01,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 286 transitions, 3839 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-20 17:56:01,853 INFO L231 Difference]: Finished difference. Result has 316 places, 273 transitions, 3271 flow [2024-06-20 17:56:01,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3187, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3271, PETRI_PLACES=316, PETRI_TRANSITIONS=273} [2024-06-20 17:56:01,853 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-20 17:56:01,853 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 273 transitions, 3271 flow [2024-06-20 17:56:01,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:01,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:01,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:01,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 17:56:01,854 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)] === [2024-06-20 17:56:01,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:01,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1690129391, now seen corresponding path program 12 times [2024-06-20 17:56:01,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:01,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112086018] [2024-06-20 17:56:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:01,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:06,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112086018] [2024-06-20 17:56:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112086018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:06,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:56:06,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90743691] [2024-06-20 17:56:06,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:06,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:56:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:56:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:56:06,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:06,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 273 transitions, 3271 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:06,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:06,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:06,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:07,279 INFO L124 PetriNetUnfolderBase]: 858/1526 cut-off events. [2024-06-20 17:56:07,279 INFO L125 PetriNetUnfolderBase]: For 154444/154446 co-relation queries the response was YES. [2024-06-20 17:56:07,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10743 conditions, 1526 events. 858/1526 cut-off events. For 154444/154446 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8419 event pairs, 155 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 10585. Up to 1315 conditions per place. [2024-06-20 17:56:07,296 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 54 changer transitions 0/293 dead transitions. [2024-06-20 17:56:07,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 293 transitions, 3965 flow [2024-06-20 17:56:07,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:56:07,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:56:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-20 17:56:07,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-20 17:56:07,298 INFO L175 Difference]: Start difference. First operand has 316 places, 273 transitions, 3271 flow. Second operand 10 states and 114 transitions. [2024-06-20 17:56:07,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 293 transitions, 3965 flow [2024-06-20 17:56:07,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 293 transitions, 3891 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:07,909 INFO L231 Difference]: Finished difference. Result has 318 places, 274 transitions, 3362 flow [2024-06-20 17:56:07,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3362, PETRI_PLACES=318, PETRI_TRANSITIONS=274} [2024-06-20 17:56:07,909 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-20 17:56:07,909 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 274 transitions, 3362 flow [2024-06-20 17:56:07,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:07,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:07,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:07,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 17:56:07,910 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)] === [2024-06-20 17:56:07,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2073529295, now seen corresponding path program 6 times [2024-06-20 17:56:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787425451] [2024-06-20 17:56:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:13,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787425451] [2024-06-20 17:56:13,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787425451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:13,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:13,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:56:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715262608] [2024-06-20 17:56:13,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:13,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:56:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:56:13,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:56:13,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:13,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 274 transitions, 3362 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:13,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:13,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:13,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:14,571 INFO L124 PetriNetUnfolderBase]: 854/1519 cut-off events. [2024-06-20 17:56:14,571 INFO L125 PetriNetUnfolderBase]: For 144238/144238 co-relation queries the response was YES. [2024-06-20 17:56:14,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 1519 events. 854/1519 cut-off events. For 144238/144238 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8373 event pairs, 193 based on Foata normal form. 2/1520 useless extension candidates. Maximal degree in co-relation 10372. Up to 1451 conditions per place. [2024-06-20 17:56:14,589 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 24 changer transitions 0/290 dead transitions. [2024-06-20 17:56:14,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 290 transitions, 3986 flow [2024-06-20 17:56:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 17:56:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 17:56:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-20 17:56:14,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3098958333333333 [2024-06-20 17:56:14,589 INFO L175 Difference]: Start difference. First operand has 318 places, 274 transitions, 3362 flow. Second operand 12 states and 119 transitions. [2024-06-20 17:56:14,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 290 transitions, 3986 flow [2024-06-20 17:56:15,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 290 transitions, 3803 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:15,086 INFO L231 Difference]: Finished difference. Result has 322 places, 274 transitions, 3233 flow [2024-06-20 17:56:15,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3179, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3233, PETRI_PLACES=322, PETRI_TRANSITIONS=274} [2024-06-20 17:56:15,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-20 17:56:15,087 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 274 transitions, 3233 flow [2024-06-20 17:56:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:15,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:15,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 17:56:15,087 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)] === [2024-06-20 17:56:15,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:15,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1867260911, now seen corresponding path program 13 times [2024-06-20 17:56:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072155841] [2024-06-20 17:56:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:15,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:19,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:19,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072155841] [2024-06-20 17:56:19,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072155841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:19,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:19,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:56:19,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341661033] [2024-06-20 17:56:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:56:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:56:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:56:19,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:19,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 274 transitions, 3233 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:19,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:19,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:19,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:20,428 INFO L124 PetriNetUnfolderBase]: 858/1528 cut-off events. [2024-06-20 17:56:20,428 INFO L125 PetriNetUnfolderBase]: For 146470/146472 co-relation queries the response was YES. [2024-06-20 17:56:20,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1528 events. 858/1528 cut-off events. For 146470/146472 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8461 event pairs, 170 based on Foata normal form. 2/1529 useless extension candidates. Maximal degree in co-relation 10310. Up to 1379 conditions per place. [2024-06-20 17:56:20,446 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 37 changer transitions 0/291 dead transitions. [2024-06-20 17:56:20,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 291 transitions, 3909 flow [2024-06-20 17:56:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:56:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:56:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 17:56:20,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-20 17:56:20,447 INFO L175 Difference]: Start difference. First operand has 322 places, 274 transitions, 3233 flow. Second operand 10 states and 108 transitions. [2024-06-20 17:56:20,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 291 transitions, 3909 flow [2024-06-20 17:56:21,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 291 transitions, 3851 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 17:56:21,088 INFO L231 Difference]: Finished difference. Result has 321 places, 275 transitions, 3307 flow [2024-06-20 17:56:21,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3307, PETRI_PLACES=321, PETRI_TRANSITIONS=275} [2024-06-20 17:56:21,089 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-20 17:56:21,089 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 275 transitions, 3307 flow [2024-06-20 17:56:21,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:21,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:21,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 17:56:21,090 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)] === [2024-06-20 17:56:21,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash -257488859, now seen corresponding path program 7 times [2024-06-20 17:56:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535894680] [2024-06-20 17:56:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:26,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:26,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535894680] [2024-06-20 17:56:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535894680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:26,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 17:56:26,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310593134] [2024-06-20 17:56:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:26,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 17:56:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 17:56:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-20 17:56:27,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:56:27,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 275 transitions, 3307 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:27,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:27,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:56:27,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:27,861 INFO L124 PetriNetUnfolderBase]: 874/1554 cut-off events. [2024-06-20 17:56:27,861 INFO L125 PetriNetUnfolderBase]: For 163140/163142 co-relation queries the response was YES. [2024-06-20 17:56:27,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11042 conditions, 1554 events. 874/1554 cut-off events. For 163140/163142 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8587 event pairs, 114 based on Foata normal form. 2/1555 useless extension candidates. Maximal degree in co-relation 10881. Up to 1252 conditions per place. [2024-06-20 17:56:27,880 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 74 changer transitions 0/306 dead transitions. [2024-06-20 17:56:27,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 306 transitions, 4393 flow [2024-06-20 17:56:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 17:56:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 17:56:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-20 17:56:27,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-20 17:56:27,881 INFO L175 Difference]: Start difference. First operand has 321 places, 275 transitions, 3307 flow. Second operand 12 states and 151 transitions. [2024-06-20 17:56:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 306 transitions, 4393 flow [2024-06-20 17:56:28,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 306 transitions, 4271 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:28,407 INFO L231 Difference]: Finished difference. Result has 325 places, 279 transitions, 3503 flow [2024-06-20 17:56:28,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3185, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3503, PETRI_PLACES=325, PETRI_TRANSITIONS=279} [2024-06-20 17:56:28,408 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-20 17:56:28,408 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 279 transitions, 3503 flow [2024-06-20 17:56:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:28,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:28,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:28,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 17:56:28,408 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)] === [2024-06-20 17:56:28,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:28,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1690122447, now seen corresponding path program 8 times [2024-06-20 17:56:28,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:28,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494733172] [2024-06-20 17:56:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:28,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:34,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:34,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494733172] [2024-06-20 17:56:34,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494733172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:34,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:34,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:56:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815277896] [2024-06-20 17:56:34,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:34,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:56:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:56:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:56:34,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:34,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 279 transitions, 3503 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:34,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:34,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:34,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:35,552 INFO L124 PetriNetUnfolderBase]: 886/1574 cut-off events. [2024-06-20 17:56:35,552 INFO L125 PetriNetUnfolderBase]: For 179612/179614 co-relation queries the response was YES. [2024-06-20 17:56:35,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11358 conditions, 1574 events. 886/1574 cut-off events. For 179612/179614 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8768 event pairs, 154 based on Foata normal form. 4/1577 useless extension candidates. Maximal degree in co-relation 11196. Up to 1339 conditions per place. [2024-06-20 17:56:35,571 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 61 changer transitions 0/304 dead transitions. [2024-06-20 17:56:35,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 304 transitions, 4351 flow [2024-06-20 17:56:35,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:56:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:56:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 17:56:35,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-20 17:56:35,572 INFO L175 Difference]: Start difference. First operand has 325 places, 279 transitions, 3503 flow. Second operand 11 states and 124 transitions. [2024-06-20 17:56:35,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 304 transitions, 4351 flow [2024-06-20 17:56:36,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 304 transitions, 4166 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:36,126 INFO L231 Difference]: Finished difference. Result has 328 places, 283 transitions, 3630 flow [2024-06-20 17:56:36,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3318, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3630, PETRI_PLACES=328, PETRI_TRANSITIONS=283} [2024-06-20 17:56:36,127 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-20 17:56:36,127 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 283 transitions, 3630 flow [2024-06-20 17:56:36,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:36,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:36,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:36,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 17:56:36,127 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)] === [2024-06-20 17:56:36,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash 11857969, now seen corresponding path program 9 times [2024-06-20 17:56:36,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:36,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523376692] [2024-06-20 17:56:36,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:36,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:42,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523376692] [2024-06-20 17:56:42,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523376692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:42,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:42,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:56:42,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215003920] [2024-06-20 17:56:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:56:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:56:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:56:42,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:56:42,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 283 transitions, 3630 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:42,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:42,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:56:42,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:43,705 INFO L124 PetriNetUnfolderBase]: 902/1600 cut-off events. [2024-06-20 17:56:43,706 INFO L125 PetriNetUnfolderBase]: For 183368/183372 co-relation queries the response was YES. [2024-06-20 17:56:43,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11935 conditions, 1600 events. 902/1600 cut-off events. For 183368/183372 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8909 event pairs, 125 based on Foata normal form. 6/1605 useless extension candidates. Maximal degree in co-relation 11771. Up to 1153 conditions per place. [2024-06-20 17:56:43,723 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 234 selfloop transitions, 81 changer transitions 0/317 dead transitions. [2024-06-20 17:56:43,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 317 transitions, 5016 flow [2024-06-20 17:56:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:56:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:56:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-20 17:56:43,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-20 17:56:43,724 INFO L175 Difference]: Start difference. First operand has 328 places, 283 transitions, 3630 flow. Second operand 11 states and 141 transitions. [2024-06-20 17:56:43,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 317 transitions, 5016 flow [2024-06-20 17:56:44,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 317 transitions, 4754 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-20 17:56:44,336 INFO L231 Difference]: Finished difference. Result has 330 places, 287 transitions, 3711 flow [2024-06-20 17:56:44,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3711, PETRI_PLACES=330, PETRI_TRANSITIONS=287} [2024-06-20 17:56:44,336 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 299 predicate places. [2024-06-20 17:56:44,336 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 287 transitions, 3711 flow [2024-06-20 17:56:44,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:44,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:44,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:44,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 17:56:44,336 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)] === [2024-06-20 17:56:44,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:44,337 INFO L85 PathProgramCache]: Analyzing trace with hash -233836957, now seen corresponding path program 14 times [2024-06-20 17:56:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:44,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708252457] [2024-06-20 17:56:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:49,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708252457] [2024-06-20 17:56:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708252457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:49,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:56:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835550975] [2024-06-20 17:56:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:49,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:56:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:56:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:56:49,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:49,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 287 transitions, 3711 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:49,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:49,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:49,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:50,215 INFO L124 PetriNetUnfolderBase]: 906/1608 cut-off events. [2024-06-20 17:56:50,216 INFO L125 PetriNetUnfolderBase]: For 186450/186452 co-relation queries the response was YES. [2024-06-20 17:56:50,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11985 conditions, 1608 events. 906/1608 cut-off events. For 186450/186452 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8950 event pairs, 170 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 11820. Up to 1428 conditions per place. [2024-06-20 17:56:50,234 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 46 changer transitions 0/306 dead transitions. [2024-06-20 17:56:50,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 306 transitions, 4429 flow [2024-06-20 17:56:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:56:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:56:50,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 17:56:50,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-20 17:56:50,236 INFO L175 Difference]: Start difference. First operand has 330 places, 287 transitions, 3711 flow. Second operand 10 states and 112 transitions. [2024-06-20 17:56:50,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 306 transitions, 4429 flow [2024-06-20 17:56:50,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 306 transitions, 4167 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:50,883 INFO L231 Difference]: Finished difference. Result has 332 places, 288 transitions, 3602 flow [2024-06-20 17:56:50,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3449, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3602, PETRI_PLACES=332, PETRI_TRANSITIONS=288} [2024-06-20 17:56:50,883 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-20 17:56:50,883 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 288 transitions, 3602 flow [2024-06-20 17:56:50,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:56:50,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:50,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 17:56:50,884 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)] === [2024-06-20 17:56:50,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:50,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1474571123, now seen corresponding path program 10 times [2024-06-20 17:56:50,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:50,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365790393] [2024-06-20 17:56:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:50,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:56:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:56:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:56:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365790393] [2024-06-20 17:56:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365790393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:56:56,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:56:56,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:56:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370243372] [2024-06-20 17:56:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:56:56,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:56:56,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:56:56,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:56:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:56:56,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:56:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 288 transitions, 3602 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:56:56,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:56:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:56:57,447 INFO L124 PetriNetUnfolderBase]: 912/1618 cut-off events. [2024-06-20 17:56:57,447 INFO L125 PetriNetUnfolderBase]: For 187361/187363 co-relation queries the response was YES. [2024-06-20 17:56:57,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11861 conditions, 1618 events. 912/1618 cut-off events. For 187361/187363 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 9033 event pairs, 103 based on Foata normal form. 2/1619 useless extension candidates. Maximal degree in co-relation 11695. Up to 800 conditions per place. [2024-06-20 17:56:57,466 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 154 changer transitions 0/314 dead transitions. [2024-06-20 17:56:57,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 314 transitions, 4600 flow [2024-06-20 17:56:57,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:56:57,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:56:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 17:56:57,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-20 17:56:57,468 INFO L175 Difference]: Start difference. First operand has 332 places, 288 transitions, 3602 flow. Second operand 11 states and 133 transitions. [2024-06-20 17:56:57,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 314 transitions, 4600 flow [2024-06-20 17:56:58,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 314 transitions, 4459 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 17:56:58,120 INFO L231 Difference]: Finished difference. Result has 335 places, 290 transitions, 3834 flow [2024-06-20 17:56:58,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3461, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3834, PETRI_PLACES=335, PETRI_TRANSITIONS=290} [2024-06-20 17:56:58,120 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-20 17:56:58,120 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 290 transitions, 3834 flow [2024-06-20 17:56:58,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:56:58,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:56:58,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:56:58,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 17:56:58,120 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)] === [2024-06-20 17:56:58,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:56:58,121 INFO L85 PathProgramCache]: Analyzing trace with hash -404544037, now seen corresponding path program 15 times [2024-06-20 17:56:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:56:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093716775] [2024-06-20 17:56:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:56:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:56:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093716775] [2024-06-20 17:57:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093716775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:02,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:02,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:57:02,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623512174] [2024-06-20 17:57:02,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:02,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:57:02,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:02,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:57:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:57:03,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:03,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 290 transitions, 3834 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:03,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:03,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:03,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:03,805 INFO L124 PetriNetUnfolderBase]: 916/1626 cut-off events. [2024-06-20 17:57:03,805 INFO L125 PetriNetUnfolderBase]: For 191608/191610 co-relation queries the response was YES. [2024-06-20 17:57:03,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 1626 events. 916/1626 cut-off events. For 191608/191610 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9100 event pairs, 179 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 12058. Up to 1477 conditions per place. [2024-06-20 17:57:03,821 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 269 selfloop transitions, 36 changer transitions 0/307 dead transitions. [2024-06-20 17:57:03,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 307 transitions, 4544 flow [2024-06-20 17:57:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:57:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:57:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 17:57:03,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-20 17:57:03,822 INFO L175 Difference]: Start difference. First operand has 335 places, 290 transitions, 3834 flow. Second operand 10 states and 107 transitions. [2024-06-20 17:57:03,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 307 transitions, 4544 flow [2024-06-20 17:57:04,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 307 transitions, 4190 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 17:57:04,519 INFO L231 Difference]: Finished difference. Result has 336 places, 291 transitions, 3614 flow [2024-06-20 17:57:04,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3614, PETRI_PLACES=336, PETRI_TRANSITIONS=291} [2024-06-20 17:57:04,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-20 17:57:04,519 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 291 transitions, 3614 flow [2024-06-20 17:57:04,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:04,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:04,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:04,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 17:57:04,519 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)] === [2024-06-20 17:57:04,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:04,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1474340483, now seen corresponding path program 11 times [2024-06-20 17:57:04,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:04,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696046873] [2024-06-20 17:57:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:04,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:10,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:10,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696046873] [2024-06-20 17:57:10,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696046873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:10,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:10,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:57:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903623707] [2024-06-20 17:57:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:10,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:57:10,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:57:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:57:10,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:10,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 291 transitions, 3614 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:10,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:10,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:10,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:11,126 INFO L124 PetriNetUnfolderBase]: 912/1620 cut-off events. [2024-06-20 17:57:11,127 INFO L125 PetriNetUnfolderBase]: For 179499/179501 co-relation queries the response was YES. [2024-06-20 17:57:11,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11585 conditions, 1620 events. 912/1620 cut-off events. For 179499/179501 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9058 event pairs, 108 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 11417. Up to 805 conditions per place. [2024-06-20 17:57:11,147 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 158 selfloop transitions, 153 changer transitions 0/313 dead transitions. [2024-06-20 17:57:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 313 transitions, 4544 flow [2024-06-20 17:57:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:57:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:57:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 17:57:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-20 17:57:11,148 INFO L175 Difference]: Start difference. First operand has 336 places, 291 transitions, 3614 flow. Second operand 11 states and 131 transitions. [2024-06-20 17:57:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 313 transitions, 4544 flow [2024-06-20 17:57:11,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 313 transitions, 4376 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-20 17:57:11,812 INFO L231 Difference]: Finished difference. Result has 339 places, 291 transitions, 3757 flow [2024-06-20 17:57:11,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3446, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3757, PETRI_PLACES=339, PETRI_TRANSITIONS=291} [2024-06-20 17:57:11,812 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-20 17:57:11,812 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 291 transitions, 3757 flow [2024-06-20 17:57:11,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:11,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:11,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:11,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 17:57:11,813 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)] === [2024-06-20 17:57:11,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash -404659357, now seen corresponding path program 16 times [2024-06-20 17:57:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135134001] [2024-06-20 17:57:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:16,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:16,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135134001] [2024-06-20 17:57:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135134001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:16,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:16,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:57:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453246319] [2024-06-20 17:57:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:57:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:57:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:57:16,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:16,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 291 transitions, 3757 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:16,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:16,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:16,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:17,269 INFO L124 PetriNetUnfolderBase]: 916/1628 cut-off events. [2024-06-20 17:57:17,269 INFO L125 PetriNetUnfolderBase]: For 183485/183487 co-relation queries the response was YES. [2024-06-20 17:57:17,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11916 conditions, 1628 events. 916/1628 cut-off events. For 183485/183487 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9114 event pairs, 178 based on Foata normal form. 2/1629 useless extension candidates. Maximal degree in co-relation 11747. Up to 1479 conditions per place. [2024-06-20 17:57:17,291 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 271 selfloop transitions, 35 changer transitions 0/308 dead transitions. [2024-06-20 17:57:17,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 308 transitions, 4469 flow [2024-06-20 17:57:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:57:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:57:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 17:57:17,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-20 17:57:17,293 INFO L175 Difference]: Start difference. First operand has 339 places, 291 transitions, 3757 flow. Second operand 10 states and 106 transitions. [2024-06-20 17:57:17,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 308 transitions, 4469 flow [2024-06-20 17:57:17,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 308 transitions, 4258 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 17:57:17,954 INFO L231 Difference]: Finished difference. Result has 340 places, 292 transitions, 3680 flow [2024-06-20 17:57:17,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3546, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3680, PETRI_PLACES=340, PETRI_TRANSITIONS=292} [2024-06-20 17:57:17,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-20 17:57:17,955 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 292 transitions, 3680 flow [2024-06-20 17:57:17,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:17,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:17,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:17,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 17:57:17,956 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)] === [2024-06-20 17:57:17,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:17,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2145346923, now seen corresponding path program 17 times [2024-06-20 17:57:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:17,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277792113] [2024-06-20 17:57:17,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:17,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:23,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:23,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:23,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277792113] [2024-06-20 17:57:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277792113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:23,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:57:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047248363] [2024-06-20 17:57:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:23,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:57:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:57:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:57:23,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 32 [2024-06-20 17:57:23,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 292 transitions, 3680 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:23,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:23,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 32 [2024-06-20 17:57:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:24,276 INFO L124 PetriNetUnfolderBase]: 920/1635 cut-off events. [2024-06-20 17:57:24,276 INFO L125 PetriNetUnfolderBase]: For 187850/187850 co-relation queries the response was YES. [2024-06-20 17:57:24,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11802 conditions, 1635 events. 920/1635 cut-off events. For 187850/187850 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9175 event pairs, 97 based on Foata normal form. 2/1636 useless extension candidates. Maximal degree in co-relation 11632. Up to 1271 conditions per place. [2024-06-20 17:57:24,293 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 82 changer transitions 0/317 dead transitions. [2024-06-20 17:57:24,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 317 transitions, 4448 flow [2024-06-20 17:57:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 17:57:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 17:57:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-20 17:57:24,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-20 17:57:24,295 INFO L175 Difference]: Start difference. First operand has 340 places, 292 transitions, 3680 flow. Second operand 12 states and 146 transitions. [2024-06-20 17:57:24,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 317 transitions, 4448 flow [2024-06-20 17:57:25,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 317 transitions, 4324 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-20 17:57:25,009 INFO L231 Difference]: Finished difference. Result has 344 places, 293 transitions, 3786 flow [2024-06-20 17:57:25,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3556, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3786, PETRI_PLACES=344, PETRI_TRANSITIONS=293} [2024-06-20 17:57:25,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-20 17:57:25,009 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 293 transitions, 3786 flow [2024-06-20 17:57:25,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:57:25,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:25,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:25,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 17:57:25,010 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)] === [2024-06-20 17:57:25,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -399890813, now seen corresponding path program 12 times [2024-06-20 17:57:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:25,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794584333] [2024-06-20 17:57:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:25,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:31,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:31,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794584333] [2024-06-20 17:57:31,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794584333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:31,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:31,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:57:31,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477588977] [2024-06-20 17:57:31,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:31,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:57:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:57:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:57:31,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:31,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 293 transitions, 3786 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:31,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:31,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:31,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:32,079 INFO L124 PetriNetUnfolderBase]: 926/1646 cut-off events. [2024-06-20 17:57:32,079 INFO L125 PetriNetUnfolderBase]: For 191243/191245 co-relation queries the response was YES. [2024-06-20 17:57:32,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12008 conditions, 1646 events. 926/1646 cut-off events. For 191243/191245 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9253 event pairs, 185 based on Foata normal form. 2/1647 useless extension candidates. Maximal degree in co-relation 11837. Up to 1487 conditions per place. [2024-06-20 17:57:32,101 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 40 changer transitions 0/313 dead transitions. [2024-06-20 17:57:32,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 313 transitions, 4558 flow [2024-06-20 17:57:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:57:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:57:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 17:57:32,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-20 17:57:32,101 INFO L175 Difference]: Start difference. First operand has 344 places, 293 transitions, 3786 flow. Second operand 11 states and 118 transitions. [2024-06-20 17:57:32,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 313 transitions, 4558 flow [2024-06-20 17:57:32,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 313 transitions, 4338 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-20 17:57:32,814 INFO L231 Difference]: Finished difference. Result has 345 places, 295 transitions, 3751 flow [2024-06-20 17:57:32,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3751, PETRI_PLACES=345, PETRI_TRANSITIONS=295} [2024-06-20 17:57:32,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-20 17:57:32,814 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 295 transitions, 3751 flow [2024-06-20 17:57:32,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:32,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:32,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:32,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 17:57:32,815 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)] === [2024-06-20 17:57:32,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash 686905793, now seen corresponding path program 13 times [2024-06-20 17:57:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80412618] [2024-06-20 17:57:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:39,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80412618] [2024-06-20 17:57:39,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80412618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:39,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:39,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:57:39,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863896383] [2024-06-20 17:57:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:39,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:57:39,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:39,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:57:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:57:39,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:39,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 295 transitions, 3751 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:39,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:39,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:39,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:40,472 INFO L124 PetriNetUnfolderBase]: 932/1656 cut-off events. [2024-06-20 17:57:40,472 INFO L125 PetriNetUnfolderBase]: For 192540/192542 co-relation queries the response was YES. [2024-06-20 17:57:40,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11904 conditions, 1656 events. 932/1656 cut-off events. For 192540/192542 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9337 event pairs, 128 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 11732. Up to 1350 conditions per place. [2024-06-20 17:57:40,492 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 72 changer transitions 0/320 dead transitions. [2024-06-20 17:57:40,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 320 transitions, 4769 flow [2024-06-20 17:57:40,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:57:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:57:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 17:57:40,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-20 17:57:40,493 INFO L175 Difference]: Start difference. First operand has 345 places, 295 transitions, 3751 flow. Second operand 11 states and 130 transitions. [2024-06-20 17:57:40,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 320 transitions, 4769 flow [2024-06-20 17:57:41,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 320 transitions, 4608 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-20 17:57:41,309 INFO L231 Difference]: Finished difference. Result has 347 places, 297 transitions, 3801 flow [2024-06-20 17:57:41,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3801, PETRI_PLACES=347, PETRI_TRANSITIONS=297} [2024-06-20 17:57:41,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-20 17:57:41,309 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 297 transitions, 3801 flow [2024-06-20 17:57:41,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:41,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:41,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:41,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 17:57:41,310 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)] === [2024-06-20 17:57:41,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash -227170283, now seen corresponding path program 14 times [2024-06-20 17:57:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552930745] [2024-06-20 17:57:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:47,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:47,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552930745] [2024-06-20 17:57:47,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552930745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:47,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:47,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:57:47,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480720912] [2024-06-20 17:57:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:47,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:57:47,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:47,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:57:47,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:57:47,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:47,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 297 transitions, 3801 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:47,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:47,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:47,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:48,889 INFO L124 PetriNetUnfolderBase]: 964/1708 cut-off events. [2024-06-20 17:57:48,890 INFO L125 PetriNetUnfolderBase]: For 244637/244639 co-relation queries the response was YES. [2024-06-20 17:57:48,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13115 conditions, 1708 events. 964/1708 cut-off events. For 244637/244639 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9651 event pairs, 161 based on Foata normal form. 4/1711 useless extension candidates. Maximal degree in co-relation 12942. Up to 1351 conditions per place. [2024-06-20 17:57:48,909 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 84 changer transitions 0/329 dead transitions. [2024-06-20 17:57:48,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 329 transitions, 5403 flow [2024-06-20 17:57:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:57:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:57:48,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 17:57:48,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-20 17:57:48,910 INFO L175 Difference]: Start difference. First operand has 347 places, 297 transitions, 3801 flow. Second operand 11 states and 130 transitions. [2024-06-20 17:57:48,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 329 transitions, 5403 flow [2024-06-20 17:57:49,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 329 transitions, 5230 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 17:57:49,702 INFO L231 Difference]: Finished difference. Result has 350 places, 305 transitions, 4184 flow [2024-06-20 17:57:49,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4184, PETRI_PLACES=350, PETRI_TRANSITIONS=305} [2024-06-20 17:57:49,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-20 17:57:49,703 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 305 transitions, 4184 flow [2024-06-20 17:57:49,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:49,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:49,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:49,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 17:57:49,703 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)] === [2024-06-20 17:57:49,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2143191283, now seen corresponding path program 18 times [2024-06-20 17:57:49,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:49,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301278281] [2024-06-20 17:57:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:49,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:57:54,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:57:54,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:57:54,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301278281] [2024-06-20 17:57:54,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301278281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:57:54,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:57:54,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:57:54,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620698003] [2024-06-20 17:57:54,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:57:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:57:54,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:57:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:57:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:57:54,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:57:54,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 305 transitions, 4184 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:54,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:57:54,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:57:54,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:57:55,229 INFO L124 PetriNetUnfolderBase]: 968/1716 cut-off events. [2024-06-20 17:57:55,229 INFO L125 PetriNetUnfolderBase]: For 235204/235206 co-relation queries the response was YES. [2024-06-20 17:57:55,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13296 conditions, 1716 events. 968/1716 cut-off events. For 235204/235206 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9702 event pairs, 134 based on Foata normal form. 2/1717 useless extension candidates. Maximal degree in co-relation 13122. Up to 1485 conditions per place. [2024-06-20 17:57:55,248 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 263 selfloop transitions, 59 changer transitions 0/324 dead transitions. [2024-06-20 17:57:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 324 transitions, 4948 flow [2024-06-20 17:57:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:57:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:57:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 17:57:55,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 17:57:55,250 INFO L175 Difference]: Start difference. First operand has 350 places, 305 transitions, 4184 flow. Second operand 10 states and 111 transitions. [2024-06-20 17:57:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 324 transitions, 4948 flow [2024-06-20 17:57:56,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 324 transitions, 4243 flow, removed 125 selfloop flow, removed 11 redundant places. [2024-06-20 17:57:56,057 INFO L231 Difference]: Finished difference. Result has 349 places, 306 transitions, 3665 flow [2024-06-20 17:57:56,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3665, PETRI_PLACES=349, PETRI_TRANSITIONS=306} [2024-06-20 17:57:56,057 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-20 17:57:56,057 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 306 transitions, 3665 flow [2024-06-20 17:57:56,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:57:56,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:57:56,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:57:56,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 17:57:56,058 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)] === [2024-06-20 17:57:56,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:57:56,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1696563131, now seen corresponding path program 19 times [2024-06-20 17:57:56,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:57:56,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636600870] [2024-06-20 17:57:56,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:57:56,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:57:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:00,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:00,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:00,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636600870] [2024-06-20 17:58:00,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636600870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:00,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:00,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:58:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056865076] [2024-06-20 17:58:00,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:00,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:58:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:58:00,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:58:01,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:01,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 306 transitions, 3665 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:01,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:01,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:01,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:01,936 INFO L124 PetriNetUnfolderBase]: 972/1724 cut-off events. [2024-06-20 17:58:01,937 INFO L125 PetriNetUnfolderBase]: For 233335/233337 co-relation queries the response was YES. [2024-06-20 17:58:01,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 1724 events. 972/1724 cut-off events. For 233335/233337 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9801 event pairs, 191 based on Foata normal form. 2/1725 useless extension candidates. Maximal degree in co-relation 12476. Up to 1544 conditions per place. [2024-06-20 17:58:01,957 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 279 selfloop transitions, 44 changer transitions 0/325 dead transitions. [2024-06-20 17:58:01,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 325 transitions, 4429 flow [2024-06-20 17:58:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:58:01,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:58:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 17:58:01,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-20 17:58:01,958 INFO L175 Difference]: Start difference. First operand has 349 places, 306 transitions, 3665 flow. Second operand 10 states and 111 transitions. [2024-06-20 17:58:01,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 325 transitions, 4429 flow [2024-06-20 17:58:02,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 325 transitions, 4253 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-20 17:58:02,730 INFO L231 Difference]: Finished difference. Result has 351 places, 307 transitions, 3648 flow [2024-06-20 17:58:02,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3489, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3648, PETRI_PLACES=351, PETRI_TRANSITIONS=307} [2024-06-20 17:58:02,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-20 17:58:02,730 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 307 transitions, 3648 flow [2024-06-20 17:58:02,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:02,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:02,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 17:58:02,731 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)] === [2024-06-20 17:58:02,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2143186633, now seen corresponding path program 20 times [2024-06-20 17:58:02,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:02,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227045445] [2024-06-20 17:58:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:07,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227045445] [2024-06-20 17:58:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227045445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:07,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 17:58:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253063292] [2024-06-20 17:58:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:07,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 17:58:07,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 17:58:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 17:58:07,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:07,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 307 transitions, 3648 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:58:07,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:07,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:07,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:08,641 INFO L124 PetriNetUnfolderBase]: 969/1719 cut-off events. [2024-06-20 17:58:08,641 INFO L125 PetriNetUnfolderBase]: For 219438/219440 co-relation queries the response was YES. [2024-06-20 17:58:08,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 1719 events. 969/1719 cut-off events. For 219438/219440 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9722 event pairs, 133 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 12029. Up to 1474 conditions per place. [2024-06-20 17:58:08,663 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 264 selfloop transitions, 61 changer transitions 0/327 dead transitions. [2024-06-20 17:58:08,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 327 transitions, 4360 flow [2024-06-20 17:58:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:58:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:58:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 17:58:08,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-20 17:58:08,664 INFO L175 Difference]: Start difference. First operand has 351 places, 307 transitions, 3648 flow. Second operand 11 states and 120 transitions. [2024-06-20 17:58:08,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 327 transitions, 4360 flow [2024-06-20 17:58:09,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 327 transitions, 4213 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-20 17:58:09,478 INFO L231 Difference]: Finished difference. Result has 354 places, 307 transitions, 3627 flow [2024-06-20 17:58:09,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3501, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3627, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2024-06-20 17:58:09,478 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-20 17:58:09,478 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3627 flow [2024-06-20 17:58:09,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 17:58:09,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:09,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:09,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 17:58:09,479 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)] === [2024-06-20 17:58:09,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1726705503, now seen corresponding path program 15 times [2024-06-20 17:58:09,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362886909] [2024-06-20 17:58:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:09,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:15,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:15,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362886909] [2024-06-20 17:58:15,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362886909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:15,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:15,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:58:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342298370] [2024-06-20 17:58:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:15,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:58:15,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:58:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:58:15,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:15,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 3627 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:15,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:15,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:15,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:16,235 INFO L124 PetriNetUnfolderBase]: 965/1713 cut-off events. [2024-06-20 17:58:16,236 INFO L125 PetriNetUnfolderBase]: For 205257/205259 co-relation queries the response was YES. [2024-06-20 17:58:16,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11868 conditions, 1713 events. 965/1713 cut-off events. For 205257/205259 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9715 event pairs, 135 based on Foata normal form. 2/1714 useless extension candidates. Maximal degree in co-relation 11693. Up to 1472 conditions per place. [2024-06-20 17:58:16,267 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 61 changer transitions 0/325 dead transitions. [2024-06-20 17:58:16,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 325 transitions, 4333 flow [2024-06-20 17:58:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:58:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:58:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 17:58:16,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-20 17:58:16,268 INFO L175 Difference]: Start difference. First operand has 354 places, 307 transitions, 3627 flow. Second operand 10 states and 113 transitions. [2024-06-20 17:58:16,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 325 transitions, 4333 flow [2024-06-20 17:58:17,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 325 transitions, 4042 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-20 17:58:17,104 INFO L231 Difference]: Finished difference. Result has 354 places, 307 transitions, 3464 flow [2024-06-20 17:58:17,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3336, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3464, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2024-06-20 17:58:17,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-20 17:58:17,104 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3464 flow [2024-06-20 17:58:17,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:17,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:17,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:17,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 17:58:17,104 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)] === [2024-06-20 17:58:17,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1696378557, now seen corresponding path program 16 times [2024-06-20 17:58:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:17,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321057543] [2024-06-20 17:58:17,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:17,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:22,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321057543] [2024-06-20 17:58:22,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321057543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:22,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:22,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:58:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572688845] [2024-06-20 17:58:22,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:22,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:58:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:22,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:58:22,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:58:23,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:23,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 307 transitions, 3464 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:23,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:23,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:23,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:23,964 INFO L124 PetriNetUnfolderBase]: 957/1701 cut-off events. [2024-06-20 17:58:23,964 INFO L125 PetriNetUnfolderBase]: For 189925/189927 co-relation queries the response was YES. [2024-06-20 17:58:23,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11003 conditions, 1701 events. 957/1701 cut-off events. For 189925/189927 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9659 event pairs, 181 based on Foata normal form. 4/1704 useless extension candidates. Maximal degree in co-relation 10827. Up to 1497 conditions per place. [2024-06-20 17:58:23,987 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 272 selfloop transitions, 53 changer transitions 0/327 dead transitions. [2024-06-20 17:58:23,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 327 transitions, 4178 flow [2024-06-20 17:58:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:58:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:58:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 17:58:23,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-20 17:58:23,988 INFO L175 Difference]: Start difference. First operand has 354 places, 307 transitions, 3464 flow. Second operand 11 states and 122 transitions. [2024-06-20 17:58:23,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 327 transitions, 4178 flow [2024-06-20 17:58:24,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 327 transitions, 3854 flow, removed 45 selfloop flow, removed 13 redundant places. [2024-06-20 17:58:24,654 INFO L231 Difference]: Finished difference. Result has 352 places, 307 transitions, 3254 flow [2024-06-20 17:58:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3140, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3254, PETRI_PLACES=352, PETRI_TRANSITIONS=307} [2024-06-20 17:58:24,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-20 17:58:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 307 transitions, 3254 flow [2024-06-20 17:58:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:24,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:24,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:24,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 17:58:24,655 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)] === [2024-06-20 17:58:24,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1689883127, now seen corresponding path program 2 times [2024-06-20 17:58:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290249085] [2024-06-20 17:58:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:24,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:32,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290249085] [2024-06-20 17:58:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290249085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:32,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:32,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:58:32,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750286990] [2024-06-20 17:58:32,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:32,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:58:32,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:58:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:58:32,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:32,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 307 transitions, 3254 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:32,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:32,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:32,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:33,215 INFO L124 PetriNetUnfolderBase]: 954/1697 cut-off events. [2024-06-20 17:58:33,215 INFO L125 PetriNetUnfolderBase]: For 156334/156336 co-relation queries the response was YES. [2024-06-20 17:58:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 1697 events. 954/1697 cut-off events. For 156334/156336 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9672 event pairs, 204 based on Foata normal form. 2/1698 useless extension candidates. Maximal degree in co-relation 10111. Up to 1574 conditions per place. [2024-06-20 17:58:33,236 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 288 selfloop transitions, 33 changer transitions 0/323 dead transitions. [2024-06-20 17:58:33,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 323 transitions, 3952 flow [2024-06-20 17:58:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 17:58:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 17:58:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 17:58:33,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-20 17:58:33,237 INFO L175 Difference]: Start difference. First operand has 352 places, 307 transitions, 3254 flow. Second operand 10 states and 106 transitions. [2024-06-20 17:58:33,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 323 transitions, 3952 flow [2024-06-20 17:58:33,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 323 transitions, 3790 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-20 17:58:33,930 INFO L231 Difference]: Finished difference. Result has 352 places, 307 transitions, 3164 flow [2024-06-20 17:58:33,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=3092, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3164, PETRI_PLACES=352, PETRI_TRANSITIONS=307} [2024-06-20 17:58:33,931 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-20 17:58:33,931 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 307 transitions, 3164 flow [2024-06-20 17:58:33,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:33,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:33,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:33,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 17:58:33,931 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)] === [2024-06-20 17:58:33,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:33,932 INFO L85 PathProgramCache]: Analyzing trace with hash -227161913, now seen corresponding path program 17 times [2024-06-20 17:58:33,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:33,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316703606] [2024-06-20 17:58:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:33,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:58:39,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:58:39,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:58:39,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316703606] [2024-06-20 17:58:39,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316703606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:58:39,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:58:39,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 17:58:39,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974715708] [2024-06-20 17:58:39,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:58:39,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 17:58:39,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:58:39,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 17:58:39,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-20 17:58:39,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-20 17:58:39,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 307 transitions, 3164 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:39,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:58:39,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-20 17:58:39,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:58:40,964 INFO L124 PetriNetUnfolderBase]: 946/1684 cut-off events. [2024-06-20 17:58:40,964 INFO L125 PetriNetUnfolderBase]: For 142053/142055 co-relation queries the response was YES. [2024-06-20 17:58:40,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 1684 events. 946/1684 cut-off events. For 142053/142055 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9592 event pairs, 160 based on Foata normal form. 4/1687 useless extension candidates. Maximal degree in co-relation 9383. Up to 1339 conditions per place. [2024-06-20 17:58:40,981 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 239 selfloop transitions, 89 changer transitions 0/330 dead transitions. [2024-06-20 17:58:40,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 330 transitions, 3902 flow [2024-06-20 17:58:40,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 17:58:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 17:58:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 17:58:40,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 17:58:40,985 INFO L175 Difference]: Start difference. First operand has 352 places, 307 transitions, 3164 flow. Second operand 11 states and 128 transitions. [2024-06-20 17:58:40,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 330 transitions, 3902 flow [2024-06-20 17:58:41,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 330 transitions, 3677 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-20 17:58:41,578 INFO L231 Difference]: Finished difference. Result has 354 places, 307 transitions, 3125 flow [2024-06-20 17:58:41,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3125, PETRI_PLACES=354, PETRI_TRANSITIONS=307} [2024-06-20 17:58:41,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-20 17:58:41,579 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 307 transitions, 3125 flow [2024-06-20 17:58:41,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 17:58:41,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:58:41,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:58:41,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 17:58:41,579 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)] === [2024-06-20 17:58:41,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:58:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash 988139428, now seen corresponding path program 1 times [2024-06-20 17:58:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:58:41,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913794421] [2024-06-20 17:58:41,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:58:41,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:58:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15